4,184 results match your criteria ACS applied materials & interfaces[Journal]


A three-dimensional nano-web scaffold of ferroelectric beta-PVDF fibers for lithium metal plating and stripping.

ACS Appl Mater Interfaces 2020 Jun 4. Epub 2020 Jun 4.

Lithium metal has been considered as an anode material to improve energy densities of lithium-chemistry-based rechargeable batteries (that is to say, lithium metal batteries or LMBs). Higher capacities and cell voltages are ensured by replacing practically used anode materials such as graphite with lithium metal. However, lithium metal as the LMB anode material has been challenged by its dendritic growth, electrolyte decomposition on its fresh surface and its serious volumetric change. Read More

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http://dx.doi.org/10.1021/acsami.0c05065DOI Listing

Fundamental Triangular Interaction of Electron Trajectory Deviation and P-N Junction to Promote Redox Reactions for High-Energy-Density Electrode.

ACS Appl Mater Interfaces 2020 Jun 4. Epub 2020 Jun 4.

Highly efficient redox reaction of active electrode materials is the guarantee of achieving high energy density for energy storage devices like batteries and supercapacitors. Here we design a triangular interaction of electrode materials involving PN junction between NiO (p-type) and MoO3 (n-type), and electron trajectory deviation between gold nanoparticles with NiO or MoO3. This optimized fundamental triangle structure could promote the redox reaction of NiO and MoO3, and thus the fabricated ternary nanocomposites exhibit excellent electrochemical performance. Read More

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http://dx.doi.org/10.1021/acsami.0c08299DOI Listing

Synthesis of methyl-capped TiO-SiO Janus Pickering Emulsifiers for Selective Photodegradation of Water-soluble Dyes.

ACS Appl Mater Interfaces 2020 Jun 3. Epub 2020 Jun 3.

Recently, Pickering emulsion stabilized by Janus particles have received considerable attention for interfacial reactions and droplet manipulation. However, its potential interests have been rarely explored because of the difficulties in designing and fabricating Janus particle for Pickering emulsion with suitable applications. Also, photocatalytic materials are scarcely applied as emulsifiers in Pickering emulsions because of their photo-generated hydrophilicity. Read More

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http://dx.doi.org/10.1021/acsami.0c01064DOI Listing

Solvent-Solvent Correlations across Graphene: The Effect of Image Charges.

ACS Nano 2020 Jun 3. Epub 2020 Jun 3.

Wetting experiments show pure graphene to be weakly hydrophilic, but its contact angle (CA) also reflects the character of the supporting material. Measurements and Molecular Dynamics simulations on suspended and supported graphene often reveal a CA reduction due to the presence of the supporting substrate. A similar reduction is consistently observed when graphene is wetted from both sides. Read More

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http://dx.doi.org/10.1021/acsnano.9b09321DOI Listing

NiO/Poly(4-alkylthiazole)s Hybrid Interface for Promoting Spatial Charge Separation in Photoelectrochemical Water Reduction.

ACS Appl Mater Interfaces 2020 Jun 3. Epub 2020 Jun 3.

Conjugated polymers are emerging as alternatives to inorganic semiconductors for the photoelectrochemical (PEC) water splitting. Herein, semitransparent poly(4-alkylthiazole)s layers with different trialkylsilyloxymethyl (RSiOCH-) side-chains (PTzTNB: R = -butyl, PTzTHX: R = -hexyl) are applied to functionalize NiO thin films to build hybrid photocathodes. The hybrid interface allows the effective spatial separation of the photoexcited carriers. Read More

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http://dx.doi.org/10.1021/acsami.0c03975DOI Listing

Photoswitchable gRNAs for Spatiotemporally Controlled CRISPR-Cas-Based Genomic Regulation.

ACS Cent Sci 2020 May 1;6(5):695-703. Epub 2020 Apr 1.

Department of Materials, Department of Bioengineering and Institute of Biomedical Engineering, Imperial College London, London SW7 2AZ, United Kingdom.

The recently discovered CRISPR-Cas gene editing system and its derivatives have found numerous applications in fundamental biology research and pharmaceutical sciences. The need for precise external control over the gene editing and regulatory events has driven the development of inducible CRISPR-Cas systems. While most of the light-controllable CRISPR-Cas systems are based on protein engineering, we developed an alternative synthetic approach based on modification of crRNA/tracrRNA duplex (guide RNA or gRNA) with photocaging groups, preventing the gRNA from recognizing its genome target sequence until its deprotection is induced within seconds of illumination. Read More

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http://dx.doi.org/10.1021/acscentsci.9b01093DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7256956PMC

Heterosynaptic Plasticity Emulated by Liquid Crystal-Carbon Nanotube Composites with Modulatory Interneurons.

ACS Appl Mater Interfaces 2020 Jun 2. Epub 2020 Jun 2.

Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea.

The aim of the neuromorphic computing is to emulate energy-efficient and smart data-processing ability of the biological brain, which is achieved by massively interconnected neurons and synapses. The strength of a connection between two neurons is modified by homosynaptic and heterosynaptic plasticity. As current research in the neuromorphic device is mainly focused on emulating homosynaptic plasticity, complex biological functions are not easy to mimic because they require both homosynaptic and heterosynaptic plasticity. Read More

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http://dx.doi.org/10.1021/acsami.0c01775DOI Listing

Photocatalytically Active Superhydrophilic/Superoleophobic Coating.

ACS Omega 2020 May 12;5(20):11448-11454. Epub 2020 May 12.

School of Environmental and Material Engineering, Yantai University, Yantai 264405, China.

Hydrophilic materials are easily fouled by organic contaminants owing to their high surface energy, and this oil-fouling problem severely hinders their use in practical applications. To address this challenge, herein, a hydrophilic coating with oil repellency and photocatalytic activity is developed by a spray-casting process. In the air surrounding, a water droplet spreads over the coating surface completely, while oil droplets exhibit contact angles more than 150° and moving on the coating freely. Read More

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http://dx.doi.org/10.1021/acsomega.0c00474DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7254502PMC

Plasmon-induced water splitting - through flexible hybrid 2D architecture up to hydrogen from seawater under NIR light.

ACS Appl Mater Interfaces 2020 Jun 1. Epub 2020 Jun 1.

The efficient utilization of solar energy is actual task of the present and near future. Thus, preparation of appropriate materials able to harvest and utilize the broad wavelength range of solar light (especially commonly ignored near-infrared light region - NIR) is the high-priority challenging missions. Our study provides a rationally designed 2D flexible heterostructures with photocatalytic activity for the production of "clean" hydrogen under NIR illumination with hydrogen production rate exceeding most 2D materials and the ability to use the seawater as a starting material. Read More

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http://dx.doi.org/10.1021/acsami.0c04029DOI Listing

Mitigation of peri-implantitis by rational design of bifunctional peptides with antimicrobial properties.

ACS Biomater Sci Eng 2020 May 24;6(5):2682-2695. Epub 2019 Sep 24.

Herman Ostrow School of Dentistry of USC, Center for Craniofacial Molecular Biology, University of Southern California, Los Angeles, USA.

The integration of molecular and cell biology with materials science has led to strategies to improve the interface between dental implants with the surrounding soft and hard tissues in order to replace missing teeth and restore mastication. More than 3 million implants have been placed in the US alone and this number is rising by 500,000/year. Peri-implantitis, an inflammatory response to oral pathogens growing on the implant surface threatens to reduce service life leading to eventual implant failure, and such an outcome will have adverse impact on public health and create significant health care costs. Read More

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http://dx.doi.org/10.1021/acsbiomaterials.9b01213DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7255409PMC

Highly Transparent Covalent Mucin Coatings Improve the Wettability and Tribology of Hydrophobic Contact Lenses.

ACS Appl Mater Interfaces 2020 May 28. Epub 2020 May 28.

A stable, good coverage of the corneal tissue by the tear film is essential for protecting the eye. Contact lenses, however, constitute a foreign body that separates the tear film into two thinner layers, which are then more vulnerable towards disruption. This effect is even more pronounced if the contact lenses possess an insufficient surface wettability, which, in addition to friction, is suggested to be linked to discomfort and damage to the ocular surface. Read More

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http://dx.doi.org/10.1021/acsami.0c06847DOI Listing

Sulfur-Mediated Interface Engineering Enables Fast SnS Nanosheet Anodes for Advanced Lithium/Sodium-Ion Batteries.

ACS Appl Mater Interfaces 2020 May 28. Epub 2020 May 28.

Key Laboratory of Preparation and Applications of Environmental Friendly Materials (Jilin Normal University), Ministry of Education, Changchun 130103, China.

Interface design is generally helpful to ameliorate the electrochemical properties of electrode materials but challenging as well. Herein, in situ sulfur-mediated interface engineering is developed to effectively raise the kinetics properties of the SnS nanosheet anodes, which is realized by a synchronous reduction and carbon deposition/doping process. The sulfur in the raw SnS directly induces the sulfur-doped amorphous carbon layer onto the in situ reduced SnS nanosheet. Read More

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http://dx.doi.org/10.1021/acsami.0c03860DOI Listing

Passivation of Cathode-Electrolyte Interface for 5V-Class All-Solid-State Battery.

ACS Appl Mater Interfaces 2020 May 27. Epub 2020 May 27.

All-solid-state battery is a potentially superior alternative to state-of-art lithium-ion battery owing to its merits in abuse tolerance, packaging, energy density and operable temperature ranges. In this work, 5V-class spinel LiNi0.5Mn1. Read More

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http://dx.doi.org/10.1021/acsami.0c03610DOI Listing

Indocyanine Green-Coated Polycaprolactone Micelles for Fluorescence Imaging of Tumors.

ACS Appl Bio Mater 2020 Apr 8;3(4):2344-2349. Epub 2020 Mar 8.

Department of Bioengineering, School of Engineering and Applied Sciences, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States.

Recently, near-infrared (NIR) fluorescent dyes such as indocyanine green (ICG) have received tremendous interest as contrast agents for use in fluorescence-guided, intraoperative cancer resection surgery. However, despite showing great promise, ICG has many shortcomings such as rapid clearance and poor tumor accumulation. To improve the selective accumulation of ICG within tumors, numerous groups have formulated ICG into nanoparticles, but these approaches can suffer from rapid leakage of ICG, use of materials that exhibit poor or incomplete excretion, or complex chemistries that are not easily amenable to scale up for clinical use. Read More

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http://dx.doi.org/10.1021/acsabm.0c00091DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7245056PMC

Mesoporous Polymer-Derived Ceramic Membranes for Water Purification via a Self-Sacrificed Template.

ACS Omega 2020 May 5;5(19):11100-11105. Epub 2020 May 5.

Engineering Laboratory of Advanced Energy Materials, Ningbo Institute of Materials Technology & Engineering, Chinese Academy of Sciences, No. 1219 Zhongguan West Road, Zhenhai District, Ningbo, Zhejiang 315201, P. R. China.

Membrane separation has been widely used in water purification, and mesoporous ceramic membranes show a high potential in the future because of their high stability and resistance to harsh environments. In the current study, a novel polymer-derived ceramic silicon oxycarbide (SiOC) membrane was developed via a preceramic reactive self-sacrificed method and was further applied in a homemade dead-end system for water purification. A cyclosiloxane hybrid polymer was selected as the precursor and polydimethylsiloxane (PDMS) was used as the sacrificial template. Read More

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http://dx.doi.org/10.1021/acsomega.0c01021DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7241006PMC

Theoretical and Experimental Study of Compression Effects on Structural Relaxation of Glass-Forming Liquids.

ACS Omega 2020 May 5;5(19):11035-11042. Epub 2020 May 5.

Department of Nanotechnology for Sustainable Energy, School of Science and Technology, Kwansei Gakuin University, Sanda 669-1337, Hyogo, Japan.

We develop the elastically collective nonlinear Langevin equation theory of bulk relaxation of glass-forming liquids to investigate molecular mobility under compression conditions. The applied pressure restricts more molecular motion and therefore significantly slows down the molecular dynamics when increasing the pressure. We quantitatively determine the temperature and pressure dependence of the structural relaxation time. Read More

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http://dx.doi.org/10.1021/acsomega.0c00860DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7241026PMC

Edge Defect-Free Anisotropic Two-Dimensional Sheets with Nearly Direct Band Gaps from a True One-Dimensional Van der Waals NbSe Material.

ACS Omega 2020 May 6;5(19):10800-10807. Epub 2020 May 6.

Department of Chemistry, Sungkyunkwan University, Suwon 16419, Republic of Korea.

Dangling-bond-free two-dimensional (2D) materials can be isolated from the bulk structures of one-dimensional (1D) van der Waals materials to produce edge-defect-free 2D materials. Conventional 2D materials have dangling bonds on their edges, which act as scattering centers that deteriorate the transport properties of carriers. Highly anisotropic 2D sheets, made of 1D van der Waals NbSe material, have three planar structures depending on the cutting direction of the bulk NbSe crystal. Read More

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http://dx.doi.org/10.1021/acsomega.0c00388DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7240825PMC

Ultrafast Exciton Dynamics in Scalable Monolayer MoS Synthesized by Metal Sulfurization.

ACS Omega 2020 May 4;5(19):10725-10730. Epub 2020 May 4.

Research Center for Applied Sciences, Academia Sinica, Taipei 11529, Taiwan.

Excitons in monolayer transition metal dichalcogenides (TMDs) have exceptionally large binding energies and dominate the optical properties of materials. Exploring the relaxation behavior of excitons is crucial for understanding the fundamental physics as well as the performance of TMD-based optoelectronic devices. However, ultrafast carrier dynamics is sensitive to the structural defects and surface conditions of TMDs, depending on the growth or transfer process. Read More

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http://dx.doi.org/10.1021/acsomega.0c00187DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7240830PMC

Contribution of Organofluorine Compounds to Pharmaceuticals.

ACS Omega 2020 May 22;5(19):10633-10640. Epub 2020 Apr 22.

Department of Life Science and Applied Chemistry, Department of Nanopharmaceutical Sciences, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya 466-5888, Japan.

Inspired by the success of fluorinated corticosteroids in the 1950s and fluoroquinolones in the 1980s, fluorine-containing pharmaceuticals, which are also known as fluoro-pharmaceuticals, have been attracting attention for more than half of a century. Presently, about 20% of the commercial pharmaceuticals are fluoro-pharmaceuticals. In this mini-review, we analyze the prevalence of fluoro-pharmaceuticals in the market and categorize them into several groups based on the chemotype of the fluoro-functional groups, their therapeutic purpose, and the presence of heterocycles and/or chirality to highlight the structural motifs, patterns, and promising trends in fluorine-based drug design. Read More

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http://dx.doi.org/10.1021/acsomega.0c00830DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7240833PMC

Room Temperature Weak-to-Strong Coupling and the Emergence of Collective Emission from Quantum Dots Coupled to Plasmonic Arrays.

ACS Nano 2020 Jun 2. Epub 2020 Jun 2.

Department of Physics, Indian Institute of Science, Bangalore 560 012, India.

Colloidal quantum dot (CQD) assemblies exhibit interesting optoelectronic properties when coupled to optical resonators ranging from Purcell-enhanced emission to the emergence of hybrid electronic and photonic polariton states in the weak and strong coupling limits, respectively. Here, experiments exploring the weak-to-strong coupling transition in CQD-plasmonic lattice hybrid devices at room temperature are presented for varying CQD concentrations. To interpret these results, generalized retarded Fano-Anderson and effective medium models are developed. Read More

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http://dx.doi.org/10.1021/acsnano.0c02785DOI Listing

Deep Ultraviolet Photodetectors Based on Carbon-Doped Two-Dimensional Hexagonal Boron Nitride.

ACS Appl Mater Interfaces 2020 Jun 4. Epub 2020 Jun 4.

Key Lab of Semiconductor Materials Science, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China.

Recently, the deep ultraviolet (DUV) photodetectors fabricated from two-dimensional (2D) hexagonal boron nitride (h-BN) layers have emerged as a hot research topic. However, the existing studies show that the h-BN-based photodetectors have relatively poor performance. In this work, C doping is utilized to modulate the properties of h-BN and improve the performance of the h-BN-based photodetectors. Read More

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http://dx.doi.org/10.1021/acsami.0c05850DOI Listing

Switchable Adhesion via Subsurface Pressure Modulation.

ACS Appl Mater Interfaces 2020 May 25. Epub 2020 May 25.

Materials and devices with tunable dry adhesion have many applications, including transfer printing, climbing robots, and gripping in pick-and-place processes. In this paper, a novel soft device to achieve dynamically tunable dry adhesion via modulation of sub-surface pneumatic pressure is introduced. Specifically, a cylindrical elastomer pillar with a mushroom-shaped cap and annular chamber that can be pressurized to tune the adhesion is investigated. Read More

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http://dx.doi.org/10.1021/acsami.0c05367DOI Listing

Direct Observation of Incommensurate-Commensurate Transition in Graphene-hBN Heterostructures via Optical Second Harmonic Generation.

ACS Appl Mater Interfaces 2020 Jun 4. Epub 2020 Jun 4.

Theoretical Physics and Applied Mathematics Department, Ural Federal University, Mira Street 19, Ekaterinburg 620002, Russia.

Commensurability effects play a crucial role in the formation of electronic properties of novel layered heterostructures. The interest in these moiré superstructures has increased tremendously since the recent observation of a superconducting state (, 556, 43-50) and metal-insulator transition (, 556, 80-84) in twisted bilayer graphene. In this regard, a straightforward and efficient experimental technique for detection of the alignment of layered materials is desired. Read More

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http://dx.doi.org/10.1021/acsami.0c05965DOI Listing

Enhancing Dry Adhesion of Polymeric Micropatterns by Electric Fields.

ACS Appl Mater Interfaces 2020 Jun 4. Epub 2020 Jun 4.

INM-Leibniz Institute for New Materials, 66123 Saarbrücken, Germany.

Micropatterned dry adhesives rely mainly on van der Waals interactions. In this paper, we explore the adhesion strength increase that can be achieved by superimposing an electrostatic field through interdigitated subsurface electrodes. Micropatterns were produced by replica molding in silicone. Read More

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http://dx.doi.org/10.1021/acsami.0c05077DOI Listing

Enabling SiO/C Anode with High Initial Coulombic Efficiency through a Chemical Pre-Lithiation Strategy for High-Energy-Density Lithium-Ion Batteries.

ACS Appl Mater Interfaces 2020 Jun 4. Epub 2020 Jun 4.

CAS Key Laboratory of Molecular Nanostructure and Nanotechnology, CAS Research/Education Center for Excellence in Molecular Sciences, Beijing National Laboratory for Molecular Sciences (BNLMS), Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing 100190, P. R. China.

Carbon-coated SiO microparticles (SiO/C) demonstrate attractive potential for anode use in high-energy-density lithium-ion batteries due to high capacity and proper cycling stability. However, the excessive irreversible consumption of Li ions during the initial cycling remains a serious challenge arising from the limited lithium in full cells. Here, we endow SiO/C anode with high initial Coulombic efficiency using the chemical pre-lithiation strategy. Read More

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http://dx.doi.org/10.1021/acsami.0c05153DOI Listing
June 2020
6.723 Impact Factor

Perovskite Multiple Quantum Wells on Layered Materials toward Narrow-Band Green Emission for Backlight Display Applications.

ACS Appl Mater Interfaces 2020 Jun 4. Epub 2020 Jun 4.

The State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques, School of Materials Science and Technology, South China University of Technology, Guangzhou 510640, China.

Quasi-two-dimensional perovskite multiple quantum wells (MQWs) have garnered attention on account of their good stability in comparison with three-dimensional analogs for light-emitting diode (LED) applications, but they exhibit a declined photoluminescence quantum yield (PLQY) for the backlight display technology. Herein, we report an in situ process by introducing layered materials as substrates to prepare the perovskite MQW powder and utilize hexagonal boron nitride (h-BN) as an example to investigate the luminescence characteristics and mechanism of h-BN@(PMA)MAPbBr (h-BN@PMPB). Remarkably, the deposition strategy enables an enhanced PLQY from 2. Read More

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http://dx.doi.org/10.1021/acsami.0c07718DOI Listing
June 2020
6.723 Impact Factor

Underoil Superhydrophilic Metal Felt Fabricated by Modifying Ultrathin Fumed Silica Coatings for the Separation of Water-in-Oil Emulsions.

ACS Appl Mater Interfaces 2020 Jun 2. Epub 2020 Jun 2.

Department of Chemistry, University of College London, 20 Gordon Street, London WC1H 0AJ, U.K.

Although various superhydrophobic/superoleophilic porous materials have been developed and successfully applied to separate water-in-oil emulsions through the size-sieving mechanism, the separation performance is restricted by their nanoscale pore size severely. In this study, the wettability of underoil water on fumed silica was experimentally observed, and the underlying mechanism was investigated by carrying out theoretical analysis and molecular dynamic (MD) simulations. Further, we present a novel, facile, and an inexpensive technique to fabricate an underoil superhydrophilic metal felt with microscale pores for the separation of water-in-oil emulsions using SiO nanoparticles (NPs) as building blocks. Read More

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http://dx.doi.org/10.1021/acsami.0c03801DOI Listing

Azide-Functional Extracellular Matrix Coatings as a Bioactive Platform for Bioconjugation.

ACS Appl Mater Interfaces 2020 Jun 4. Epub 2020 Jun 4.

Institute of Interfacial Process Engineering and Plasma Technology IGVP, University of Stuttgart, Nobelstraße 12, 70569 Stuttgart, Germany.

In recent years, the development and application of decellularized extracellular matrices (ECMs) for use as biomaterials have grown rapidly. These cell-derived matrices (CDMs) represent highly bioactive and biocompatible materials consisting of a complex assembly of biomolecules. Even though CDMs mimic the natural microenvironment of cells in vivo very closely, they still lack specifically addressable functional groups, which are often required to tailor a biomaterial functionality by bioconjugation. Read More

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http://dx.doi.org/10.1021/acsami.0c04579DOI Listing

Sterically and Electronically Modified Aryliminopyridyl-Nickel Bromide Precatalysts for an Access to Branched Polyethylene with Vinyl/Vinylene End Groups.

ACS Omega 2020 May 27;5(18):10610-10625. Epub 2020 Apr 27.

Key Laboratory of Engineering Plastics and Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.

A series of 2-((arylimino)ethyl)pyridine derivatives (), each containing -2,4-bis(dibenzocycloheptyl) groups with variations in the steric/electronic properties of the ortho-substituent in the aryl ring, and the corresponding nickel bromide precatalysts [2-N{2,4-(CH)-6-R-CH}CHN]NiBr (R = Me (), Et (), Pr (), Cl (), or F ()), have been prepared in high yield. All the precatalysts are air-stable and characterized by Fourier transform infrared spectroscopy and elemental analysis. The molecular structures of and were proved through single-crystal X-ray diffraction analysis. Read More

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http://dx.doi.org/10.1021/acsomega.0c01208DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7227053PMC

Carbazole/Benzimidazole-Based Bipolar Molecules as the Hosts for Phosphorescent and Thermally Activated Delayed Fluorescence Emitters for Efficient OLEDs.

ACS Omega 2020 May 3;5(18):10553-10561. Epub 2020 May 3.

Department of Chemistry, Tamkang University, New Taipei City 251, Taiwan.

A series of carbazole/benzimidazole-based molecules, namely, -CbzBiz, -CbzBiz, and -CbzBiz, were readily synthesized in three steps by integrating carbazole with benzimidazole via the -, -, and -positions of phenyl linked to -phenyl carbazole. These bipolar molecules exhibited a maximum UV absorption band ranging from 310 to 327 nm and a maximum emission band ranging from 380 to 400 nm. Density functional theory calculations showed that the twist angles between the donor and acceptor moieties of these molecules were from 54. Read More

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http://dx.doi.org/10.1021/acsomega.0c00967DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7227066PMC

Area-Selective Atomic Layer Deposition of Two-Dimensional WS Nanolayers.

ACS Mater Lett 2020 May 8;2(5):511-518. Epub 2020 Apr 8.

Department of Applied Physics, Eindhoven University of Technology, 5600 MB Eindhoven, The Netherlands.

With downscaling of device dimensions, two-dimensional (2D) semiconducting transition metal dichalcogenides (TMDs) such as WS are being considered as promising materials for future applications in nanoelectronics. However, at these nanoscale regimes, incorporating TMD layers in the device architecture with precise control of critical features is challenging using current top-down processing techniques. In this contribution, we pioneer the combination of two key avenues in atomic-scale processing: area-selective atomic layer deposition (AS-ALD) and growth of 2D materials, and demonstrate bottom-up processing of 2D WS nanolayers. Read More

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http://dx.doi.org/10.1021/acsmaterialslett.0c00093DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7217612PMC

Back-Reflected Performance-Enhanced Flexible Perovskite Photodetectors through Substrate Texturing with Femtosecond Laser.

ACS Appl Mater Interfaces 2020 Jun 1. Epub 2020 Jun 1.

State Key Laboratory for Applied Optics, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China.

Recently, enhancing the performance of flexible perovskite photodetectors through facile and effective means has gained greater attention. In contrast to typical approaches through modifying light-active materials, we present here a simple but effective design by improving light-matter interactions through near-field optical interference on a back-reflected substrate, whose architecture includes a morphologically flat top surface and a backscattering surface textured with micro/nanostructures by the femtosecond laser direct writing. A CHNHPbI perovskite film and poly(ethylene terephthalate) are selected as the light-active and base materials, respectively. Read More

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http://dx.doi.org/10.1021/acsami.0c04124DOI Listing

Revealing the Role of Methylammonium Chloride for Improving the Performance of 2D Perovskite Solar Cells.

ACS Appl Mater Interfaces 2020 May 28. Epub 2020 May 28.

School of Chemistry and ARC Centre of Excellence in Exciton Science, The University of Melbourne, Parkville, VIC 3010, Australia.

Layered perovskite films, composed of two-dimensional (2D) Ruddlesden-Popper perovskites (RPPs), show improved stability compared to their conventional three-dimensional (3D) counterparts in perovskite solar cells (PSCs). However, 2D PSCs exhibit a lower power conversion efficiency (PCE), which has been attributed to compositional inhomogeneity and nonuniform alignment of the 2D perovskite phases. Methylammonium chloride (MACl) has been adopted as an additive to improve the PCE and the operational stability of 2D PSCs, although the role of MACl in performance enhancement is unclear. Read More

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http://dx.doi.org/10.1021/acsami.0c05714DOI Listing

Efficient Flexible Perovskite Solar Cells Using Low-Cost Cu Top and Bottom Electrodes.

ACS Appl Mater Interfaces 2020 May 27. Epub 2020 May 27.

Laboratory for Advanced Interfacial Materials and Devices, Research Centre for Smart Wearable Technology, Institute of Textiles and Clothing, The Hong Kong Polytechnic University, Kowloon, Hong Kong SAR, China.

Perovskite solar cells (PSCs) are promising technology for flexible photovoltaic applications because of the low cost and good flexibility of the halide perovskite materials. Nevertheless, the use of transparent conductive oxides (TCOs) and noble metals (e.g. Read More

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http://dx.doi.org/10.1021/acsami.0c06461DOI Listing

Designer Nanoparticles as Robust Superlubrication Vectors.

ACS Nano 2020 May 20. Epub 2020 May 20.

Department of Materials and Interfaces, Weizmann Institute of Science, Rehovot 76100, Israel.

Phosphatidylcholine lipid bilayers or liposomes at interfaces in aqueous environments can provide extremely efficient lubrication. This is attributed to the hydration lubrication mechanism acting at the highly hydrated phosphocholine-headgroup layers exposed at the outer surface of each bilayer. Micelles exposing such phosphocholine groups could be an attractive alternative to liposomes due to their much easier preparation and structure control, but all studies to date of surfactant micelles have revealed that at relatively low normal stresses the surface layers rupture and friction increases abruptly. Read More

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http://dx.doi.org/10.1021/acsnano.0c01559DOI Listing

Molecular Design of a Highly Stable Single-Ion Conducting Polymer Gel Electrolyte.

ACS Appl Mater Interfaces 2020 May 29. Epub 2020 May 29.

Chemical Sciences and Engineering Division, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439, United States.

Single-ion conducting (SIC) polymer electrolytes with a high Li transference number () have shown the capability to enable enhanced battery performance and safety by avoiding liquid-electrolyte leakage and suppressing Li dendrite formation. However, issues of insufficient ionic conductivity, low electrochemical stability, and poor polymer/electrode interfacial contact have greatly hindered their commercial use. Here, a Li-containing boron-centered fluorinated SIC polymer gel electrolyte (LiBFSIE) was rationally designed to achieve a high and high electrochemical stability. Read More

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http://dx.doi.org/10.1021/acsami.0c03363DOI Listing

Pitfalls in assessing stromal tumor infiltrating lymphocytes (sTILs) in breast cancer.

NPJ Breast Cancer 2020 12;6:17. Epub 2020 May 12.

21Division of Research and Cancer Medicine, Peter MacCallum Cancer Centre, University of Melbourne, Melbourne, VIC Australia.

Stromal tumor-infiltrating lymphocytes (sTILs) are important prognostic and predictive biomarkers in triple-negative (TNBC) and HER2-positive breast cancer. Incorporating sTILs into clinical practice necessitates reproducible assessment. Previously developed standardized scoring guidelines have been widely embraced by the clinical and research communities. Read More

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http://dx.doi.org/10.1038/s41523-020-0156-0DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7217863PMC

High-Temperature-Annealed Flexible Carbon Nanotube Network Transistors for High-Frequency Wearable Wireless Electronics.

ACS Appl Mater Interfaces 2020 May 28. Epub 2020 May 28.

School of Electrical Science and Engineering, University of Electronic Science and Technology of China, Chengdu, Sichuan 611731, P. R. China.

Semiconducting single-walled carbon nanotubes (SWNTs) are potential active materials for fast-growing flexible/wearable applications with low-power dissipation, especially suitable for increasingly important radio-frequency (RF) wireless biosensor systems. However, the operation frequency of the existing flexible carbon nanotube field-effect transistors (CNT-FETs) is far below the current state-of-the-art GSM spectrum frequency band (typical 850 MHz) for near-field wireless communication applications. In this paper, we successfully conduct a 900 °C annealing process for the flexible CNT-FETs and hence significantly improve their operation frequency up to 2. Read More

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http://dx.doi.org/10.1021/acsami.0c03810DOI Listing
May 2020
6.723 Impact Factor

Review of Gravimetric Sensing of Volatile Organic Compounds.

ACS Sens 2020 May 29. Epub 2020 May 29.

Department of Electrical Engineering, Columbia University, New York, New York 10027-6902, United States.

Volatile organic compounds (VOCs) are pervasive in the environment. Since the early 1980s, substantial work has examined the detection of these materials, as they can indicate environmental changes that can affect human health. VOCs and similar compounds present a very specific sensing problem in that they are not reactive and often nonpolar, so it is difficult to find materials that selectively bind or adsorb them. Read More

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http://dx.doi.org/10.1021/acssensors.0c00333DOI Listing

Ultrafast Fabrication of Metal-Organic Framework-Functionalized Superwetting Membrane for Multichannel Oil/Water Separation and Floating Oil Collection.

ACS Appl Mater Interfaces 2020 Jun 26;12(22):25512-25520. Epub 2020 May 26.

State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Tianshui Road 18th, Lanzhou 730000, China.

Traditional methods for oil/water separation suffer from many tricky problems such as low efficiency, high energy consumption, and difficulties in recycling and reusing. To address these hurdles, we developed a metal-organic framework-coated superwetting membrane for multichannel oil/water separation and collection of floating oils. The dip-coating method adopted in this paper is extremely flexible in manipulation and can be completed within 1 h under a low temperature without any assistance of high pressure. Read More

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http://dx.doi.org/10.1021/acsami.0c08731DOI Listing

Enhanced Ferromagnetism and Tunable Magnetism in FeGeTe Monolayer by Strain Engineering.

ACS Appl Mater Interfaces 2020 May 27. Epub 2020 May 27.

SEU-FEI Nano-Pico Center, Key Laboratory of MEMS of Ministry of Education, Collaborative Innovation Center for Micro/Nano Fabrication, Device and System, Southeast University, Nanjing 210096, China.

Recent discovery of intrinsic ferromagnetism in FeGeTe (FGT) monolayer [Deng, Y.; 2018, 563, 94-99; Fei, Z.; 2018, 17, 778-782] not only extended the family of two-dimensional (2D) magnetic materials but also stimulated further interest in the possibility to tune their magnetic properties without changing the chemical composition or introducing defects. Read More

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http://dx.doi.org/10.1021/acsami.0c05530DOI Listing

SrNiWO Double Perovskite Oxide as a Novel Visible-Light-Responsive Water Oxidation Photocatalyst.

ACS Appl Mater Interfaces 2020 May 28. Epub 2020 May 28.

State Key Laboratory of Catalysis & Division of Solar Energy, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China.

Screening of stable visible-light-responsive water oxidation semiconductor photocatalysts is highly desired for the development of photocatalytic water splitting systems. Herein, a visible-light-absorbing SrNiWO double perovskite oxide photocatalyst was successfully prepared via a conventional solid-state reaction method. The intrinsic SrNiWO shows photocatalytic oxygen evaluation reaction (OER) activity of 60 μmol h g, even without loading any cocatalysts. Read More

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http://dx.doi.org/10.1021/acsami.0c05576DOI Listing

High-Temperature Anomalous Hall Effect in a Transition Metal Dichalcogenide Ferromagnetic Insulator Heterostructure.

ACS Nano 2020 May 18. Epub 2020 May 18.

Department of Applied Physics, The Hong Kong Polytechnic University, 999077, Hong Kong, P.R. China.

Integration of transition metal dichalcogenides (TMDs) on ferromagnetic materials (FM) may yield fascinating physics and promise for electronics and spintronic applications. In this work, high-temperature anomalous Hall effect (AHE) in the TMD ZrTe thin film using a heterostructure approach by depositing it on a ferrimagnetic insulator YIG (YFeO, yttrium iron garnet) is demonstrated. In this heterostructure, significant anomalous Hall effect can be observed at temperatures up to at least 400 K, which is a record high temperature for the observation of AHE in TMDs, and the large is more than 1 order of magnitude larger than those previously reported values in topological insulators or TMD-based heterostructures. Read More

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http://dx.doi.org/10.1021/acsnano.0c01815DOI Listing
May 2020
12.881 Impact Factor

Dual-Doped Cubic Garnet Solid Electrolytes with Superior Air Stability.

ACS Appl Mater Interfaces 2020 Jun 1. Epub 2020 Jun 1.

Nano-electrochemistry Laboratory, Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 106, Taiwan.

LiLaZrO (LLZO) garnet is one kind of solid electrolyte drawing extensive attention due to its good ionic conductivity, safety, and stability toward lithium metal anodes. However, the stability problem during synthesis and storage results in high interfacial resistance and prevents it from practical applications. We synthesized air-stable dual-doped LiLaGaZrNbO ((Ga, Nb)-LLZO) cubic-phase garnets with ionic conductivity of 9. Read More

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http://dx.doi.org/10.1021/acsami.0c01289DOI Listing

High-Performance and Ultraflexible Aqueous Rechargeable Lithium-Ion Batteries Developed by Constructing All Binder-free Electrode Materials.

ACS Appl Mater Interfaces 2020 May 28. Epub 2020 May 28.

School of Nano Technology and Nano Bionics, University of Science and Technology of China, Hefei 230026, China.

Aqueous rechargeable lithium-ion batteries (ARLIBs) as alternative energy storage devices have attracted tremendous attention because of their low cost and high safety. However, it is still a significant challenge to develop flexible high-performance ARLIBs for powering wearable devices because of the lack of all binder-free electrode materials. In this study, we develop one-step hydro-/solvothermal methods to design binder-free electrodes of LiCoO polygonal-sheeted arrays and rugby ball-shaped NaTi(PO) on carbon nanotube fibers as the cathode (LCO@CNTF) and the anode (NTP@CNTF). Read More

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http://dx.doi.org/10.1021/acsami.0c00341DOI Listing

Assisting Atomic Dispersion of Fe in N-Doped Carbon by Aerosil for High-Efficiency Oxygen Reduction.

ACS Appl Mater Interfaces 2020 May 28. Epub 2020 May 28.

State Key Laboratory of Heavy Oil Processing, China University of Petroleum (East China), Qingdao, Shandong 266580, P.R. China.

Utilizing Zn as a "fencing" agent has enabled the pyrolytic synthesis of atomically dispersed metal-nitrogen-carbon (AD-MNC) materials for broad electrocatalysis such as fuel cells, metal-air batteries, and water electrolyzers. Yet the Zn residue troubles the precise identification of the responsible sites in active service. Herein we developed a simple aerosil-assisted method for preparing AD-MNC materials to cautiously avoid the introduction of Zn. Read More

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http://dx.doi.org/10.1021/acsami.0c04169DOI Listing
May 2020
6.723 Impact Factor

Direct DNA Methylation Profiling with an Electric Biosensor.

ACS Nano 2020 Jun 4. Epub 2020 Jun 4.

Department of Mechanical and Aerospace Engineering, University of California San Diego, 9500 Gilman Drive, La Jolla, California 92093, United States.

DNA methylation is one of the principal epigenetic mechanisms that control gene expression in humans, and its profiling provides critical information about health and disease. Current profiling methods require chemical modification of bases followed by sequencing, which is expensive and time-consuming. Here, we report a direct and rapid determination of DNA methylation using an electric biosensor. Read More

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http://dx.doi.org/10.1021/acsnano.9b10085DOI Listing

A Quinone-Based Electrode for High-Performance Rechargeable Aluminum-Ion Batteries with a Low-Cost AlCl/Urea Ionic Liquid Electrolyte.

ACS Appl Mater Interfaces 2020 May 28. Epub 2020 May 28.

Department of Chemistry, Tunghai University, Taichung 40704, Taiwan.

Intensive energy demand urges state-of-the-art rechargeable batteries. Rechargeable aluminum-ion batteries (AIBs) are promising candidates with suitable cathode materials. Owing to high abundance of carbon, hydrogen, and oxygen and rich chemistry of organics (structural diversity and flexibility), small organic molecules are good choices as the electrode materials for AIB. Read More

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http://dx.doi.org/10.1021/acsami.0c04640DOI Listing

Fluorescence Enhancement in the Solid State by Isolating Perylene Fluorophores in Metal-Organic Frameworks.

ACS Appl Mater Interfaces 2020 May 27. Epub 2020 May 27.

Department of Chemistry, Texas A&M University, College Station, Texas 77843-3255, United States.

Polycyclic aromatic hydrocarbons such as perylene and pyrene and their derivatives are highly emissive fluorophores in solution. However, the practical applications of these materials in the field of molecular electronic and light-emitting devices are often hindered by self-quenching effects because of the formation of nonfluorescent aggregates in concentrated solutions or in the solid state. Herein, we demonstrate that aggregation-caused quenching of perylenes can be minimalized by molecular incorporation into metal-organic frameworks (MOFs). Read More

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http://dx.doi.org/10.1021/acsami.0c05512DOI Listing

Open-Air Plasma-Deposited Multilayer Thin-Film Moisture Barriers.

ACS Appl Mater Interfaces 2020 May 27. Epub 2020 May 27.

Department of Materials Science and Engineering, Stanford University, Stanford, California 94305-2205, United States.

Emerging moisture sensitive devices require robust encapsulation strategies to inhibit water ingress and prevent premature failure. A scalable, open-air plasma process has been developed to deposit alternating layers of conformal organosilicate and dense SiO thin-film barriers to prevent moisture ingress. The in situ low-temperature process is suitable for direct deposition on thermally sensitive devices and is compatible with flexible polymeric substrates. Read More

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http://dx.doi.org/10.1021/acsami.0c01493DOI Listing