1,125 results match your criteria Chemical Record[Journal]


Novel Two-dimensional Porous Materials for Electrochemical Energy Storage: A Minireview.

Chem Rec 2020 Jul 2. Epub 2020 Jul 2.

School of Chemistry and Chemical Engineering, Chongqing University, Chongqing, 400044, China.

Two dimensional (2D) porous materials have great potential in electrochemical energy conversion and storage. Over the past five years, our research group has focused on Simple, Mass, Homogeneous and Repeatable Synthesis of various 2D porous materials and their applications for electrochemical energy storage especially for supercapacitors (SCs). During the experimental process, through precisely controlling the experimental parameters, such as reaction species, molar ratio of different ions, concentration, pH value of reaction solution, heating temperature, and reaction time, we have successfully achieved the control of crystal structure, composition, crystallinity, morphology, and size of these 2D porous materials including transition metal oxides (TMOs), transition metal hydroxides (TMHOs), transition metal oxalates (TMOXs), transition metal coordination complexes (TMCCs) and carbon materials, as well as their derivatives and composites. Read More

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http://dx.doi.org/10.1002/tcr.202000052DOI Listing

De Novo Design of Cell-penetrating Foldamers.

Chem Rec 2020 May 28. Epub 2020 May 28.

Division of Organic Chemistry, National Institute of Health Sciences, 3-25-26, Tonomachi, Kawasaki, Kanagawa, 210-9501, Japan.

Cell-penetrating peptides (CPPs) have gained much attention as carriers of hydrophilic molecules, such as drugs, peptides, and nucleic acids, into cells. CPPs are mainly composed of cationic amino acid residues, which play an important role in their intracellular uptake via interactions with acidic groups on cell surfaces. In addition, the secondary structures of CPPs also affect their cell-membrane permeability. Read More

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http://dx.doi.org/10.1002/tcr.202000047DOI Listing

One- and Two-Photon Absorption: Physical Principle and Applications.

Chem Rec 2020 Apr 28. Epub 2020 Apr 28.

School of Mathematics and Physics, University of Science and Technology, Beijing, 100083, China.

We introduce the principle and applications of one-photon absorption (OPA) and two-photon absorption (TPA) controlled by external electric fields. The physical mechanism of OPA and TPA are firstly introduced, which can visually promote thoroughly understanding of principle and physical analysis. Secondly, the applications of different molecules in OPA and TPA with and without external electric field are introduced in detail. Read More

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http://dx.doi.org/10.1002/tcr.202000038DOI Listing

Recent Development on Controlled Synthesis of Metal Sulfides Hollow Nanostructures via Hard Template Engaged Strategy: A Mini-review.

Chem Rec 2020 Apr 22. Epub 2020 Apr 22.

School of Biomedical Engineering, Anhui Medical University, Hefei, 230032, P. R. China.

In this mini-review, we highlighted the recent progresses in the controlled synthesis of metal sulfides hollow nanostructures via hard template technique. After a brief introduction about the formation mechanism of the inorganic hollow nanostructures via hard template technique, the discussions primarily focused on the emerging development of metal sulfides hollow nanostructures. Various synthetic strategies were summarized concerning the use of the hard template engaged strategies to fabricate various metal sulfides hollow nanostructures, such as hydrothermal method, solvothermal method, ion-exchange, sulfidation or calcination etc. Read More

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http://dx.doi.org/10.1002/tcr.202000033DOI Listing

Layer-by-layer Assembly for Surface Tethering of Thin-hydrogel Films: Design Strategies and Applications.

Chem Rec 2020 Apr 14. Epub 2020 Apr 14.

College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, China.

Manipulation and engineering of the surfaces has a key role in improving the materials properties. Anchoring of thin hydrogels on the materials surface is one of the recently developed methods to achieve surfaces with high potential applications. Layer-by-layer (LBL) has been used widely as a strong strategy for immobilization of thin hydrogel films on the surface of various organic/inorganic substrates. Read More

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http://dx.doi.org/10.1002/tcr.202000007DOI Listing

Understanding and Designing Thermally Activated Delayed Fluorescence Emitters: Beyond the Energy Gap Approximation.

Chem Rec 2020 Apr 8. Epub 2020 Apr 8.

Chemistry, School of Natural and Environmental Sciences, Newcastle University, Newcastle University, Newcastle upon Tyne, NE1 7RU, UK.

In this article recent progress in the development of molecules exhibiting Thermally Activated Delayed Fluorescence (TADF) is discussed with a particular focus upon their application as emitters in highly efficient organic light emitting diodes (OLEDs). The key aspects controlling the desirable functional properties, e. g. Read More

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http://dx.doi.org/10.1002/tcr.202000013DOI Listing

Electrochemical Energy Storage Electrodes via Citrus Fruits Derived Carbon: A Minireview.

Chem Rec 2020 Mar 25. Epub 2020 Mar 25.

Department of Chemistry, Faculty of Science, University of Qom, Qom, Iran.

This review investigates the synthesis and electrochemical performance of the electrode of the electrochemical energy storage (EES) devices obtained from peels and scraps of the citrus fruits. The EES devices include batteries, supercapacitors, and hybrid systems that have considerable value and various applications. The electrode is considered as the most important part of all EES devices. Read More

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http://dx.doi.org/10.1002/tcr.202000003DOI Listing

Tuning Achiral to Chiral Supramolecular Helical Superstructures.

Chem Rec 2020 Mar 17. Epub 2020 Mar 17.

School of Chemical Sciences, Goa University, Goa, 403206, India.

The design and synthesis of achiral organic functional molecules which can assemble into a chiral with selective handedness in the absence of chiral substances is an important in understanding the role chirality plays within these systems. In this review, we described general approaches towards supramolecular chiral molecules the synthesis and self-assembly of achiral molecule to active chiral molecules to investigate controlled supramolecular chiral nanostructures with their photoluminescent properties for rapid, sensitive and selective detection of analytes of choice. Various small molecules have been discussed for achiral to chiral along with induction of chirality and controlled chiral helical structures in detail. Read More

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http://dx.doi.org/10.1002/tcr.202000004DOI Listing

Overview of Polyvinyl Alcohol Nanocomposite Hydrogels for Electro-skin, Actuator, Supercapacitor and Fuel Cell.

Chem Rec 2020 Mar 10. Epub 2020 Mar 10.

Integrated Composites Laboratory (ICL), Department of Chemical Engineering, University of Tennessee, Knoxville, TN 37996, USA.

The properties of polyvinyl alcohol (PVA) nanocomposite hydrogels influenced by nanoparticles are reviewed. Various kinds of nanoparticles with excellent mechanical and electrical properties have been introduced into PVA hydrogel to produce stretchable and conductive PVA nanocomposite hydrogel. Understanding the mechanism between the matrix of PVA hydrogel and nanoparticles is therefore critical for the development of PVA nanocomposite hydrogels. Read More

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http://dx.doi.org/10.1002/tcr.202000001DOI Listing

Application of Interrupted Pummerer Reaction Mediated (IPRm) Glycosylation in Natural Product Synthesis.

Chem Rec 2020 Feb 26. Epub 2020 Feb 26.

Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Huazhong University of Science and Technology, 13 Hangkong Road, Wuhan, Hubei, 430030, China.

Although numerous glycosylation methods have been developed for the construction of glycosidic bonds, the pace of discovering rapid assembly strategies to access complex glycosidic linkages never stops. Over the last several years, we have introduced interrupted Pummerer reaction into carbohydrate chemistry and developed two pairs of latent/active glycosyl donors, OPTB/OPSB and SPTB/SPSB glycosides. After thorough investigation of the reaction mechanism and establishment of the substrate scopes, the extension of these novel glycosylation methods to synthesize naturally occurring biological active glycoconjugates was further illustrated. Read More

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http://dx.doi.org/10.1002/tcr.201900097DOI Listing
February 2020

Green and Functional Aerogels by Macromolecular and Textural Engineering of Chitosan Microspheres.

Chem Rec 2020 Feb 24. Epub 2020 Feb 24.

Euromed Research Center, Engineering Division, Euro-Med University of Fes (UEMF), Route de Meknes, Rond-point de Bensouda, 30070, Fès, Morocco.

Tremendous interest was recently devoted to the preparation of porous and functional materials through sustainable route, including primarily the use of renewable biopolymers instead of petroleum-sourced synthetic chemicals. Among the biopolymers available in enormous quantity, chitosan - obtained by deacetylation of chitin - stands as the sole nitrogen-containing cationic amino-sugar carbohydrate. This distinctively provides chitosan derivatives with plenty of opportunities in materials science. Read More

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http://dx.doi.org/10.1002/tcr.201900089DOI Listing
February 2020

Advances in Template Prepared Nano-oxides and Their Applications: Polluted Water Treatment, Energy, Sensing and Biomedical Drug Delivery.

Chem Rec 2020 Jan 16. Epub 2020 Jan 16.

Integrated Composites Laboratory (ICL), Department of Chemical & Biomolecular Engineering, University of Tennessee, Knoxville, TN 37996, USA.

The nano-oxide materials with special structures prepared by template methods have a good dispersion, regular structures and high specific surface areas. Therefore, in some areas, improved properties are observed than conventional bulk oxide materials. For example, in the treatment of dye wastewater, the treatment efficiency of adsorbents and catalytic materials prepared by template method was about 30 % or even higher than that of conventional samples. Read More

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http://dx.doi.org/10.1002/tcr.201900093DOI Listing
January 2020

Advances in Artificial Cell Membrane Systems as a Platform for Reconstituting Ion Channels.

Chem Rec 2020 Jan 16. Epub 2020 Jan 16.

Laboratory for Nanoelectronics and Spintronics, Research Institute of Electrical Communication, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai-shi, Miyagi, 980-8577, Japan.

An artificial cell membrane that is composed of bilayer lipid membranes (BLMs) with transmembrane proteins incorporated within them represents a well-defined system for the analysis of membrane proteins, especially ion channel proteins that are major targets for drug design. Because the BLM system has a high compatibility with recently developed cell-free expression systems, it has attracted attention as a next-generation drug screening system. However, three issues associated with BLM systems, i. Read More

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http://dx.doi.org/10.1002/tcr.201900094DOI Listing
January 2020

Renaissance of Ring-opening Chemistry of Benzotriazoles: New Wine in an Old Bottle.

Chem Rec 2020 Jan 9. Epub 2020 Jan 9.

School of Pharmaceutical Sciences, MOE Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Tsinghua University, Beijing, 100084, China.

1,2,3-Benzotriazoles could undergo ring cleavage to form ortho-amino arenediazonium or α-diazo-imine species via a Dimroth-type equilibrium. Historically, the synthetic potential of this unique reactivity had remained underdeveloped. Recently, some new strategies have been developed to effect the ring-opening chemistry of benzotriazoles in more practical manners. Read More

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http://dx.doi.org/10.1002/tcr.201900088DOI Listing
January 2020

Electrochemical Sensors, a Bright Future in the Fabrication of Portable Kits in Analytical Systems.

Chem Rec 2019 Dec 17. Epub 2019 Dec 17.

Department of Chemistry, University of Tehran, Tehran, Iran.

Analysis of food, pharmaceutical, and environmental compounds is an inevitable issue to evaluate quality of the compounds used in human life. Quality of drinking water, food products, and pharmaceutical compounds is directly associated with human health. Presence of forbidden additives in food products, toxic compounds in water samples and drugs with low quality lead to important problems for human health. Read More

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http://dx.doi.org/10.1002/tcr.201900092DOI Listing
December 2019

Metallacycle Transfer and its Link to Light-Emitting Materials and Conjugated Polymers.

Authors:
Eric Rivard

Chem Rec 2019 Dec 13. Epub 2019 Dec 13.

Department of Chemistry, University of Alberta, 11227 Saskatchewan Dr., Edmonton, Alberta, Canada, T6G 2G2.

Major advances in optoelectronic technologies (e. g., solar cells, organic light-emitting diodes, etc…) are prefaced by the discovery of new synthetic methodologies. Read More

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http://dx.doi.org/10.1002/tcr.201900095DOI Listing
December 2019

Swelling-Deswelling Microencapsulation-Enabled Ultrastable Perovskite-Polymer Composites for Photonic Applications.

Chem Rec 2019 Dec 13. Epub 2019 Dec 13.

College of Optics and Photonics, University of Central Florida, Orlando, Florida, 32816, USA.

Metal halide perovskite nanocrystals are emerging as novel optoelectronic materials. Owing to their excellent optical and electronic properties such as tunable band gap, narrow-band emission and high charge mobility, they are quite promising in various fields including liquid-crystal display backlighting, solid-state lighting and other energy conversion applications. However, the intrinsic low formation energy makes them vulnerable to external stimulus, e. Read More

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http://dx.doi.org/10.1002/tcr.201900074DOI Listing
December 2019

Recent Development of Polyolefin-Based Microporous Separators for Li-Ion Batteries: A Review.

Chem Rec 2020 Jun 13;20(6):570-595. Epub 2019 Dec 13.

School of Chemistry, College of Science, University of Tehran, Tehran, Iran.

Secondary Li-ion batteries have been paid attention to wide-range applications of power source for the portable electronics, electric vehicle, and electric storage reservoir. Generally, lithium-ion batteries are comprised of four components including anode, cathode, electrolyte and separator. Although separators do not take part in the electrochemical reactions in a lithium-ion (Li-ion) battery, they conduct the critical functions of physically separating the positive and negative electrodes to prevent electrical short circuit while permitting the free flow of lithium ions through the liquid electrolyte that fill in their open porous structure. Read More

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http://dx.doi.org/10.1002/tcr.201900054DOI Listing

Electrical Methods to Elucidate Charge Transport in Hybrid Perovskites Thin Films and Devices.

Chem Rec 2020 May 13;20(5):452-465. Epub 2019 Dec 13.

BCMaterials-Basque Center for Materials, Applications and Nanostructures, Martina Casiano, UPV/EHU Science Park, Barrio Sarriena s/n, Leioa, 48940, Spain.

The panchromatic light absorption and excellent charge carrier transport properties in organo lead halide perovskites allowed to achieve an unprecedented power conversion efficiency in excess of 25 % for thin film photovoltaics fabrication. To understand the underlying phenomena, various comprehensive set of optical and electrical techniques have been employed to investigate the charge carrier dynamics in such devices. In this perspective, we aim to summarize the electrical transport properties of perovskite thin films by using (i) impedance spectroscopy (IS), (ii) space charge limited current (SCLC), (iii) field-effect transistors (FETs) and (iv) time-of-flight (TOF) methods. Read More

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http://dx.doi.org/10.1002/tcr.201900055DOI Listing

Density Functional Theory as a Data Science.

Authors:
Takao Tsuneda

Chem Rec 2019 Dec 13. Epub 2019 Dec 13.

Graduate School of Science, Technology and Innovation, Kobe University, Kobe, 657-8501, Japan.

The development of density functional theory (DFT) functionals and physical corrections are reviewed focusing on the physical meanings and the semiempirical parameters from the viewpoint of data science. This review shows that DFT exchange-correlation functionals have been developed under many strict physical conditions with minimizing the number of the semiempirical parameters, except for some recent functionals. Major physical corrections for exchange-correlation function- als are also shown to have clear physical meanings independent of the functionals, though they inevitably require minimum semiempirical parameters dependent on the functionals combined. Read More

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http://dx.doi.org/10.1002/tcr.201900081DOI Listing
December 2019

Transition-Metal-Free Activation of Amides by N-C Bond Cleavage.

Chem Rec 2019 Dec 13. Epub 2019 Dec 13.

Department of Chemistry, Rutgers University, 73 Warren Street, Newark, NJ 07102, United States.

The amide bond N-C activation represents a powerful strategy in organic synthesis to functionalize the historically inert amide linkage. This personal account highlights recent remarkable advances in transition-metal-free activation of amides by N-C bond cleavage, focusing on both (1) mechanistic aspects of ground-state-destabilization of the amide bond enabling formation of tetrahedral intermediates directly from amides with unprecedented selectivity, and (2) synthetic utility of the developed transformations. Direct nucleophilic addition to amides enables a myriad of powerful methods for the formation of C-C, C-N, C-O and C-S bonds, providing a straightforward and more synthetically useful alternative to acyl-metals. Read More

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http://dx.doi.org/10.1002/tcr.201900072DOI Listing
December 2019

Design of Advanced Functional Materials Using Nanoporous Single-Site Photocatalysts.

Chem Rec 2019 Dec 13. Epub 2019 Dec 13.

Graduate School of Engineering, Osaka University, 1-2 Yamadaoka, Suita, Osaka, 565-0871, Japan.

Nanoporous silica solids can offer opportunities for hosting photocatalytic components such as various tetra-coordinated transition metal ions to form systems referred to as "single-site photocatalysts". Under UV/visible-light irradiation, they form charge transfer excited states, which exhibit a localized charge separation and thus behave differently from those of bulk semiconductor photocatalysts exemplified by TiO . This account presents an overview of the design of advanced functional materials based on the unique photo-excited mechanisms of single-site photocatalysts. Read More

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http://dx.doi.org/10.1002/tcr.201900085DOI Listing
December 2019

Metal Functionalized Diketopyrrolopyrroles: A Promising Class of Materials for Optoelectronic Applications.

Chem Rec 2020 Jun 13;20(6):596-603. Epub 2019 Dec 13.

Department of Chemistry, Indian Institute of Technology Indore, Indore, 453552, India.

After first report on diketopyrrolopyrrole in 1974 by Farnum et al., a wide variety of its derivatives have been reported for material and biological applications. In this review we discuss various design strategies used for the synthesis of metal functionalized diketopyrrolopyrrole derivatives along with their photophysical and electrochemical studies with respect to material and biological applications. Read More

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http://dx.doi.org/10.1002/tcr.201900061DOI Listing

Recent Progress in Commercial and Novel Catalysts for Catalytic Dehydrogenation of Light Alkanes.

Chem Rec 2020 Jun 5;20(6):604-616. Epub 2019 Dec 5.

State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Qingdao, 266580, PR China.

Catalytic dehydrogenation of light alkanes can effectively produce olefins and hydrogen. Even though Pt and CrO -based catalysts are widely applied in industry, research to improve the activity and stability of these catalysts continued. This review summarizes important achievements obtained in recent years, focusing on the development of supports, promoters and preparation methods of Pt and CrO -based catalysts, which mainly aimed to improve the dispersion of the active species and to enhance coke resistance. Read More

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http://dx.doi.org/10.1002/tcr.201900090DOI Listing

Design and Development of Highly Efficient Light-Emitting Layers in OLEDs with Dimesitylboranes: An Updated Review.

Chem Rec 2020 Jun 23;20(6):556-569. Epub 2019 Oct 23.

Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction and Institute for Advanced Study, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China.

With excellent luminescent properties and transport properties, triarylborane compounds containing two mesitylenes (Mes) have gained much attention for their application in OLEDs as light-emitting layers. This study serves as an updated review summarizing recent developments in the design of fluorescent chromophores and phosphorescent host materials for OLEDs comprising small molecular compounds of dimesitylborane (BMes ) as luminescent layers, with attention to the performance of different light-emitting devices. Problems that need to be solved in the research and application of BMes in OLEDs are presented and the application prospects of such materials are suggested. Read More

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http://dx.doi.org/10.1002/tcr.201900068DOI Listing

Tuning the Photophysical Properties of Push-Pull Azaheterocyclic Chromophores by Protonation: A Brief Overview of a French-Spanish-Czech Project.

Chem Rec 2020 May 22;20(5):440-451. Epub 2019 Oct 22.

Université de Rennes, CNRS, Institut des Sciences Chimiques de Rennes - UMR 6226, F 35000, Rennes, France.

Conjugated push-pull molecules that incorporate nitrogen heterocycles as electron-withdrawing units are interesting materials because of their luminescence properties. These chromophores can be easily and reversibly protonated at the nitrogen atom of the heterocyclic ring and this can cause dramatic color changes. White and multi-color photoluminescence both in solution and in the solid state can be obtained by an accurate control of the amount of acid. Read More

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http://dx.doi.org/10.1002/tcr.201900064DOI Listing

Functionalized Silicas for Metal-Free and Metal-Based Catalytic Applications: A Review in Perspective of Green Chemistry.

Chem Rec 2020 Jun 21;20(6):513-540. Epub 2019 Oct 21.

Training Base of State Key Laboratory of Coal Science and Technology Jointly Constructed by Shanxi Province and Ministry of Science and Technology, Taiyuan University of Technology, Taiyuan, 030024, P.R. China.

Heterogeneous catalysis plays a key role in promoting green chemistry through many routes. The functionalizable reactive silanols highlight silica as a beguiling support for the preparation of heterogeneous catalysts. Metal active sites anchored on functionalized silica (FS) usually demonstrate the better dispersion and stability due to their firm chemical interaction with FSs. Read More

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http://dx.doi.org/10.1002/tcr.201900056DOI Listing
June 2020
1 Read

Development of New Synthetic Strategies, Tactics and their Applications.

Chem Rec 2019 Dec 21;19(12):2480-2504. Epub 2019 Oct 21.

Department of Chemistry, Indian Institute of Technology Bombay Powai, Mumbai-, 400 076, India.

This account covers our work related to the development of various synthetic methodologies since 1994. We summarized our strategies and their application to design various functional molecules. In this regard, we also report the utility of our methodologies in others research work. Read More

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http://dx.doi.org/10.1002/tcr.201900041DOI Listing
December 2019

Core-Shell Type Semiconducting Heterostructures for Visible Light Photocatalysis.

Chem Rec 2020 May 16;20(5):371-388. Epub 2019 Oct 16.

Department of Chemistry, Indian Institute of Technology - Delhi, Hauz Khas, New Delhi, 110016, India.

This personal account highlights a part of the work done over the years in our group towards directed synthesis of morphologically controlled nanostructures. We begin with our efforts on the synthesis of families of nanostructured metal oxides and metal oxalates of well-defined morphology using low temperature microemulsion and hydrothermal techniques. The parameters that govern the morphology in these syntheses e. Read More

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http://dx.doi.org/10.1002/tcr.201900040DOI Listing
May 2020
5 Reads

Transformations of Modified Morita-Baylis-Hillman Adducts from Isatins Catalyzed by Lewis Bases.

Chem Rec 2020 Jun 14;20(6):541-555. Epub 2019 Oct 14.

Key Laboratory of Drug-Targeting and Drug Delivery System of the Ministry of Education and Sichuan Research Center for Drug Precision Industrial Technology West China School of Pharmacy, Sichuan University, Chengdu, 610041, China.

The development of synthetic protocols to access architectures with broad structural and functional diversity from readily available starting materials is very attractive in both organic and medicinal chemistry fields. Toward this objective, the multifunctional isatin-derived Morita-Baylis-Hillman (MBH) adducts provide opportunities to construct a variety of complex scaffolds containing a "privileged" oxindole motif through several catalytic pathways. By forming the ammonium or phosphonium salts with Lewis bases, isatin-derived MBH adducts can undergo allylic substitutions with a range of nucleophiles, usually in a S 2'-S 2' pattern. Read More

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http://dx.doi.org/10.1002/tcr.201900058DOI Listing

Nitrogen-Functionalized Graphene Quantum Dots: A Versatile Platform for Integrated Optoelectronic Devices.

Authors:
Hiroyuki Tetsuka

Chem Rec 2020 May 10;20(5):429-439. Epub 2019 Oct 10.

Future Research Department, Toyota Research Institute of North America, Toyota Motor North America, 1555 Woodridge Avenue, Ann Arbor, Michigan, 48105, USA.

Over the past 10 years, graphene quantum dots (GQDs) have grown into a highly innovative optical material in various research fields, including electronics, photonics, biotechnologies, etc. With the increasing implementation of GQDs in these fields, GQDs with tunable optical properties will emerge that could be especially suitable for applications in the field of integrated photonics. Herein, a short summary of the recent state of our research on the development of nitrogen-functionalized GQDs with tunable optical properties and their integration into photodetectors is given. Read More

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http://dx.doi.org/10.1002/tcr.201900063DOI Listing

2D Materials in Light: Excited-State Dynamics and Applications.

Chem Rec 2020 May 4;20(5):413-428. Epub 2019 Oct 4.

State Key Laboratory of Applied Organic Chemistry (SKLAOC), Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering, Key Laboratory of Special Function Materials and Structure Design, Ministry of Education, Lanzhou University, Lanzhou, 730000, China.

The development of two-dimensional (2D) materials have attracted increasing interest due to their unique structure and various potential applications such as opto-electronic devices and photocatalysis. Our group have contributed to this exciting field by creating novel preparation methods for a various of 2D materials including transition metal dichalcogenides (TMDs), carbon nitrides and single elemental 2D materials from Group 15. Particularly, employing powerful time-resolved spectroscopic techniques such as femtosecond transient absorption spectroscopy, we elucidated the excited-state dynamics of 2D materials behind their outstanding performance in photocatalytic and photonic devices. Read More

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http://dx.doi.org/10.1002/tcr.201900050DOI Listing

Carboxylation Reactions with Carbon Dioxide Using N-Heterocyclic Carbene-Copper Catalysts.

Chem Rec 2020 Jun 1;20(6):494-512. Epub 2019 Oct 1.

Organometallic Chemistry Laboratory, RIKEN Cluster for Pioneering Research, 2-1 Hirosawa, Wako, Saitama, 351-0198, Japan.

The development of versatile catalyst systems and new transformations for the utilization of carbon dioxide (CO ) is of great interest and significance. This Personal Account reviews our studies on the exploration of the reactions of CO with various substrates by the use of N-heterocyclic carbene (NHC)-copper catalysts. The carboxylation of organoboron compounds gave access to a wide range of carboxylic acids with excellent functional group tolerance. Read More

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http://dx.doi.org/10.1002/tcr.201900060DOI Listing
June 2020
1 Read

Hybrid Reaction Systems for the Synthesis of Alkylated Compounds Based upon Cu-Catalyzed Coupling of Radicals and Organometallic Species.

Chem Rec 2020 May 26;20(5):403-412. Epub 2019 Sep 26.

Graduate School of Science and Engineering, Yamaguchi University, 2-16-1 Tokiwadai, Ube, Yamaguchi, 755-8611, Japan.

A transition metal catalyzed alkylation with an alkyl halide is one of the most difficult reactions to achieve, because of the difficult oxidative addition of an alkyl-halogen bond to a metal, and the tendency of the resulting alkylmetal intermediate to undergo a β-hydride elimination reaction to give an olefin. In this review, we discuss hybrid reaction systems involving Cu catalyzed combination of radicals and organometallic species, which enable facile alkylation reactions to construct C-C and C-heteroatom bonds. This paper highlights recent progress in arylation, alkenylation, alkynylation, cyclization, addition and introduction of heteroatoms via these hybrid reaction systems. Read More

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http://dx.doi.org/10.1002/tcr.201900053DOI Listing

Development of Chemical Probes for Functional Analysis of Anticancer Saponin OSW-1.

Chem Rec 2019 Dec 11;19(12):2362-2369. Epub 2019 Sep 11.

Department of Biotechnology and Life Science Faculty of Engineering, Tokyo University of Agriculture and Technology, 2-28-16, Nakacho, Koganei-shi, Tokyo, 184-8588, Japan.

Chemical probe-based approaches have proven powerful in recent years in the target identification studies of natural products. OSW-1 is a saponin class of natural products with highly potent and selective cytotoxicity against various cancer cell lines. Understanding its mechanism of action is important for the development of anticancer drugs with potentially novel target pathways. Read More

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http://dx.doi.org/10.1002/tcr.201900042DOI Listing
December 2019
1 Read

Catalytic Cleavage of Amide C-N Bond: Scandium, Manganese, and Zinc Catalysts for Esterification of Amides.

Chem Rec 2020 Apr 11;20(4):332-343. Epub 2019 Sep 11.

Department of Chemistry, Graduate School of Engineering Science, Osaka University Toyonaka, Osaka, 560-8531, Japan.

Amide C-N bonds are thermodynamically stable and their fission, such as by hydrolysis and alcoholysis, is considered a long-challenging organic reaction. In general, stoichiometric chemical transformations of amides into the corresponding esters and acids require harsh conditions, such as strong acids/bases at a high reaction temperature. Accordingly, the development of catalytic reactions that cleave not only primary and secondary amides, but also tertiary amides in mild conditions, is in high demand. Read More

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http://dx.doi.org/10.1002/tcr.201900044DOI Listing

Looking Back and Looking Ahead in Electrochemical Reduction of CO.

Chem Rec 2020 Feb 6;20(2):89-101. Epub 2019 Sep 6.

Ertl Center for Electrochemistry and Catalysis, GIST, Gwangju, 61005, South Korea.

Electrochemical reduction of carbon dioxide (CO ) to valuable organic compounds is promising as to recycling of carbon source of CO and technical compatibility with systems using renewable energy resources. In recent years, considerable efforts have been devoted to the research field of CO conversion using electrocatalysis. This personal account particularly focuses on the recent progress that has been achieved by the Ertl Center and a number of groups in South Korea that becomes one of the larger CO emitters. Read More

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http://dx.doi.org/10.1002/tcr.201900048DOI Listing
February 2020

Essential Quality Attributes of Tangible Bio-Oils from Catalytic Pyrolysis of Lignocellulosic Biomass.

Chem Rec 2019 Sep 14;19(9):2044-2057. Epub 2019 Mar 14.

State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, Liaoning, China.

This review covers the characteristics of pyrolysis and catalytic pyrolysis bio-oils by focusing on the fundamental factors that determine bio-oil upgradability. The abundant works on the subject of bio-oil production from lignocellulosic biomass were studied to establish the essential attributes of the bio-oils for assessment of the oil stability and upgradability. Bio-oils from catalytic pyrolysis processes relating to catalysts of different compositions and structures are discussed. Read More

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http://dx.doi.org/10.1002/tcr.201900001DOI Listing
September 2019

Recent Progress in Inorganic Anions Templated Silver Nanoclusters: Synthesis, Structures and Properties.

Chem Rec 2020 May 30;20(5):389-402. Epub 2019 Aug 30.

Key Laboratory of Colloid and Interface Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, and State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100, People's Republic of China.

Over recent years, research on the ligand-protected silver clusters have gained significant interest owing to their unique potential applications in catalysis, organic optoelectronics, and luminescent materials. However, the synthesis of structurally precise high-nuclearity silver nanoclusters is still challenging and become one of the prime interests of chemists. The controllable synthesis of high-nuclearity silver nanoclusters involves the ingenious use of capping ligands or/and templating agents. Read More

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http://dx.doi.org/10.1002/tcr.201900049DOI Listing
May 2020
3 Reads

Research Progress in the Field of Adsorption and Catalytic Degradation of Sewage by Hydrotalcite-Derived Materials.

Chem Rec 2020 Apr 27;20(4):355-369. Epub 2019 Aug 27.

Integrated Composites Laboratory (ICL), Department of Chemical & Biomolecular Engineering, University of Tennessee, Knoxville, TN 37996, USA.

With the rapid development of industry and agriculture and the greatly improved living conditions, the resultant gradually deteriorated environments threaten the human beings. Refractory or even toxic pollutants, which are from different industries such as printing and dyeing, pesticides, chemicals, petrochemicals, plastics and rubber, seriously threat the ecosystems and human health. Having the advantages of flexible composition, unique structure, high stability, memory effect, easy preparation and low cost, hydrotalcite compounds have a great potential in sewage degradation and environmental protection. Read More

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http://dx.doi.org/10.1002/tcr.201900046DOI Listing

Recent Advances in Facile Liquid Phase Epoxidation of Light Olefins over Heterogeneous Molybdenum Catalysts.

Chem Rec 2020 Mar 23;20(3):230-251. Epub 2019 Aug 23.

Center for Chemical Engineering Experimental Teaching, State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Qingdao, Shandong Province, 266580, China.

Molybdenum complexes are versatile and efficient for liquid phase olefin epoxidation reactions. Rational design of catalysts is critical to achieve high atom efficiency during epoxidation processes. Although liquid phase epoxidation has been a popular topic for decades, three key issues, (a) rational control of morphology of molybdenum nanoparticles, (b) manipulating metal-support interaction and (c) altering electronic configuration at molybdenum center remains unsolved in this area. Read More

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http://dx.doi.org/10.1002/tcr.201900037DOI Listing
March 2020
3 Reads

Special Issue: Recent Advances in Green Chemistry and Engineering.

Chem Rec 2019 Sep 23;19(9):1781. Epub 2019 Aug 23.

Department of Chemical Engineering, Institue of Chemical Technology, Matunga, Mumbai, India.

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http://dx.doi.org/10.1002/tcr.201900062DOI Listing
September 2019

Electrochemically Induced Diels-Alder Reaction: An Overview.

Chem Rec 2020 Apr 19;20(4):273-331. Epub 2019 Aug 19.

Department of Chemistry, School of Science, Alzahra University, POBox 1993891176, Vanak, Tehran, Iran.

One of the most important name reactions in organic chemistry, is the Diels-Alder cycloaddition reaction. It is a chemical reaction between a conjugated diene and a substituted alkene, commonly termed the dienophile to construct a substituted cyclohexene derivative. It is the stereotypical example of a pericyclic reaction with a concerted mechanism. Read More

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http://dx.doi.org/10.1002/tcr.201900018DOI Listing

Graphene and Graphene/Polymer Composites as the Most Efficient Protective Coatings for Steel, Aluminum and Copper in Corrosive Media: A Review of Recent Studies.

Chem Rec 2020 Jun 19;20(6):467-493. Epub 2019 Aug 19.

Department of Chemistry, Faculty of science, University of Qom, Qom, Iran.

The metal corrosion is considered as a severe threat to the national economy and industry structure, capable of triggering significant economic losses and severe damages, involving innumerable fields in daily life and industries. This review provides an overview of the physioelectrochemical studies on anticorrosive properties of various types of graphene coatings. Required electrochemical techniques for the investigation of anticorrosive efficiency, various types of graphene-based materials coatings along with different routes to provide desirable coated layers are discussed in detail. Read More

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http://dx.doi.org/10.1002/tcr.201900021DOI Listing

Reliability of Click Chemistry on Drug Discovery: A Personal Account.

Chem Rec 2020 Apr 16;20(4):253-272. Epub 2019 Aug 16.

Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad, 500037, India.

The unprecedented efficiency, reliability and adaptability in drug discovery, with the growing number of applications and impact, have made Click Chemistry fascinating to the scientific community. The specificity, biocompatibility along with other principles of click chemistry offers a reliable platform for the synthesis of drug-like molecules that can expedite the drug discovery process. This account summarizes such successes of versatile click reactions from our research group towards the development of functional molecules. Read More

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http://dx.doi.org/10.1002/tcr.201900027DOI Listing

Laminar Graphene Oxide Membranes Towards Selective Ionic and Molecular Separations: Challenges and Progress.

Chem Rec 2020 Apr 16;20(4):344-354. Epub 2019 Aug 16.

Materials Laboratory, Department of Chemistry, Mirpur University of Science and Technology (MUST), Mirpur, 10250 (AJK), Pakistan.

Resolution of resources and environmental crises requires an efficient separation technologies, consequently, scientists and engineers are working vigorously for ideal separation materials. Laminar graphene oxide (GO) is a two-dimensional (2D) material offers considerable interest in this field due to its single atomic layer thickness, good stability, chemical inertness, and variety of functional groups. Recently, GO have emerged as a novel membrane material for molecular and ionic separation of gases, solvent, water, and desalination applications. Read More

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http://dx.doi.org/10.1002/tcr.201900024DOI Listing
April 2020
6 Reads

Material and Interface Engineering for High-Performance Perovskite Solar Cells: A Personal Journey and Perspective.

Chem Rec 2020 Mar 1;20(3):209-229. Epub 2019 Aug 1.

Guangdong Key Lab of Nano-Micro Material Research, School of Chemical Biology and Biotechnology, Shenzhen Graduate School, Peking University, Shenzhen, 518055, China.

Hybrid organic-inorganic perovskite solar cells (PSCs) have become a shining star in the photovoltaic field due to their spectacular increase in power conversion efficiency (PCE) from 3.8 % to over 23 % in just few years, opening up the potential in addressing the important future energy and environment issues. The excellent photovoltaic performance can be attributed to the unique properties of the organometal halide perovskite materials, including high absorption coefficient, tunable bandgap, high defect tolerance, and excellent charge transport characteristics. Read More

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http://dx.doi.org/10.1002/tcr.201900028DOI Listing

Special Issue: OLED Materials and Devices.

Authors:
Wai-Yeung Wong

Chem Rec 2019 Aug 31;19(8):1470. Epub 2019 Jul 31.

The Hong Kong Polytechnic University.

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http://dx.doi.org/10.1002/tcr.201900052DOI Listing

Natural Cellulose Derived Nanocomposites as Anodic Materials for Lithium-Ion Batteries.

Chem Rec 2020 Mar 18;20(3):187-208. Epub 2019 Jul 18.

Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang, 310027, China.

Bio-inspired synthetic method provides an effective shortcut to fabricate functional nanostructured materials with specific morphologies and designed functionalities. Natural cellulose substances (e. g. Read More

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http://dx.doi.org/10.1002/tcr.201900030DOI Listing

DNA-Templated Copper Nanoprobes: Overview, Feature, Application, and Current Development in Detection Technologies.

Chem Rec 2020 Mar 12;20(3):174-186. Epub 2019 Jul 12.

Department of Chemical Engineering, National Taiwan University, No. 1, Sec. 4, Roosevelt Road, Taipei, 10617, Taiwan.

Metal nanoprobes have recently attracted board research interestinr their application in establishing sensing systems due to their unique optical, electrical, physical, and chemical properties. In comparison to gold and silver nanoprobes, analytical platform based on copper nanoprobes (Cu-NPs) is still in the early stages of development. In this review, we focus on single-stranded, and double-stranded DNA capped Cu-NPs sensing systems which have been designed for various analytes, including metal ions, anions, small molecules, biomolecules (DNA, RNA, and protein, etc. Read More

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http://dx.doi.org/10.1002/tcr.201900022DOI Listing