12 results match your criteria Chemnanomat[Journal]

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Impurity Segregation and Nanoparticle Reorganization of Indium Doped MgO Cubes.

ChemNanoMat 2019 May 3;5(5):634-641. Epub 2019 Apr 3.

Department of Chemistry and Physics of Materials University of Salzburg Jakob-Haringer-Strasse 2a 5020 Salzburg Austria.

Metal oxide nanocomposites are non-equilibrium solids and promising precursors for functional materials. Annealing of such materials can provide control over impurity segregation and, depending on the level of consolidation, represents a versatile approach to engineer free surfaces, particle-particle interfaces and grain boundaries. Starting with indium-magnesium-oxide nanoparticle powders obtained via injection of an indium organic precursor into the magnesium combustion flame and subsequent particle quenching in argon, we investigated the stability of the trivalent In ions in the host lattice of MgO nanoparticles by determining grain growth, morphology evolution and impurity segregation. Read More

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http://dx.doi.org/10.1002/cnma.201900077DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6563704PMC
May 2019
15 Reads

Maskless Spatioselective Functionalization of Silicon Nanowires.

ChemNanoMat 2018 Aug 29;4(8):874-881. Epub 2018 May 29.

Molecular NanoFabrication MESA+ Institute for Nanotechnology University of Twente P.O. Box 217 7500 AE Enschede The Netherlands.

Spatioselective functionalization of silicon nanowires was achieved without using a masking material. The designed process combines metal-assisted chemical etching (MACE) to fabricate silicon nanowires and hydrosilylation to form molecular monolayers. After MACE, a monolayer was formed on the exposed nanowire surfaces. Read More

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http://dx.doi.org/10.1002/cnma.201800072DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6473541PMC
August 2018
1 Read

Targetable Mechanical Properties by Switching between Self-Sorting and Co-assembly with Formed Tripodal Ketoenamine Supramolecular Hydrogels.

ChemNanoMat 2018 Aug 22;4(8):853-859. Epub 2018 Jun 22.

Institute of Chemical Sciences, School of Engineering and Physical Sciences Heriot-Watt University William Perkin Building Edinburgh Scotland, United Kingdom EH11 4AS.

A new family of supramolecular hydrogelators are introduced in which self-sorting and co-assembly can be utilised in the tuneability of the mechanical properties of the materials, a property closely tied to the nanostructure of the gel network. The reactivity of the components of the gelators allows for system chemistry concepts to be applied to the formation of the gels and shows that molecular properties, and not necessarily the chemical identity, determines some gel properties in these family of gels. Read More

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http://dx.doi.org/10.1002/cnma.201800198DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6473556PMC
August 2018
1 Read

Electroactive Amphiphiles for Addressable Supramolecular Nanostructures.

ChemNanoMat 2018 Aug 4;4(8):741-752. Epub 2018 Jul 4.

School of Chemistry University of Bristol Cantock's Close Bristol BS8 1TS UK.

In this focus review we aim to highlight an exciting class of materials, electroactive amphiphiles (EAAs). This class of functional amphiphilic molecules has been the subject of sporadic investigations over the last few decades, but little attempt has been made to date to gather or organise these investigations into a logical fashion. Here we attempted to gather the most important contributions, provide a framework in which to discuss them, and, more importantly, point towards the areas where we believe these EAAs will contribute to solving wider scientific problems and open new opportunities. Read More

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http://doi.wiley.com/10.1002/cnma.201800194
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http://dx.doi.org/10.1002/cnma.201800194DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6473557PMC
August 2018
6 Reads

Amino Acid Based Self-assembled Nanostructures: Complex Structures from Remarkably Simple Building Blocks.

ChemNanoMat 2018 Aug;4(8):730-740

Department of Molecular Microbiology and Biotechnology, George S. Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv 6997801, Israel.

Amino acids are the simplest biological building blocks capable of forming discreet nanostructures by supramolecular self-assembly. The understanding of the process of organization of amino acid nanostructures is of fundamental importance for the study of metabolic diseases as well as for materials science applications. Although peptide self-assembled structures have been the topic of many review articles, much less attention has been devoted to the ability of amino acid building blocks, both natural and synthetic, to form ordered assemblies with defined architectures and notable physical properties, by the process of self-association. Read More

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http://dx.doi.org/10.1002/cnma.201800147DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6352958PMC
August 2018
11 Reads

Structural Determinants of the Stability of Enzyme-Responsive Polyion Complex Nanoparticles Targeting 's Elastase.

ChemNanoMat 2018 Aug 23;4(8):807-814. Epub 2018 Apr 23.

School of Chemistry University of Birmingham Edgbaston B15 2TT UK.

Here, we report how the stability of polyion complex (PIC) particles containing 's elastase (LasB) degradable peptides and antimicrobial poly(ethylene imine) is significantly improved by careful design of the peptide component. Three LasB-degradable peptides are reported herein, all of them carrying the LasB-degradable sequence -GLA- and for which the number of anionic amino acids and cysteine units per peptide were systematically varied. Our results suggest that while net charge and potential to cross-link via disulfide bond formation do not have a predictable effect on the ability of LasB to degrade these peptides, a significant effect of these two parameters on particle preparation and stability is observed. Read More

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http://dx.doi.org/10.1002/cnma.201800054DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6146907PMC
August 2018
42 Reads

Synthesis, Radiolabelling and In Vitro Imaging of Multifunctional Nanoceramics.

ChemNanoMat 2018 Apr 8;4(4):361-372. Epub 2018 Feb 8.

Department of Chemistry University of Bath, Claverton Down BA2 7AY Bath UK.

Molecular imaging has become a powerful technique in preclinical and clinical research aiming towards the diagnosis of many diseases. In this work, we address the synthetic challenges in achieving lab-scale, batch-to-batch reproducible copper-64- and gallium-68-radiolabelled metal nanoparticles (MNPs) for cellular imaging purposes. Composite NPs incorporating magnetic iron oxide cores with luminescent quantum dots were simultaneously encapsulated within a thin silica shell, yielding water-dispersible, biocompatible and luminescent NPs. Read More

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http://dx.doi.org/10.1002/cnma.201700378DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5993288PMC
April 2018
6 Reads

Chirality Controls Reaction-Diffusion of Nanoparticles for Inhibiting Cancer Cells.

ChemNanoMat 2017 Jan 11;3(1):17-21. Epub 2016 Oct 11.

Department of Chemistry, Brandeis University, 415 South St. Waltham, MA 02454 (USA).

Reaction-diffusion (RD) is the most important inherent feature of living organism, but it has yet to be used for developing biofunctional nanoparticles (NPs). Here we show the use of chirality to control the RD of NPs for selectively inhibiting cancer cells. We observe that L-phosphotyrosine (L-pY) decorated NPs (NP@L-pYs) are innocuous to cells, but D-pY decorated ones (NP@D-pYs) selectively inhibit cancer cells. Read More

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http://dx.doi.org/10.1002/cnma.201600258DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5665382PMC
January 2017
8 Reads

Facile Morphology-Controlled Synthesis of Organolead Iodide Perovskite Nanocrystals Using Binary Capping Agents.

ChemNanoMat 2017 Apr 27;3(4):223-227. Epub 2017 Jan 27.

Center for Surface Chemistry and CatalysisKU LeuvenCelestijnenlaan 200FB-3001LeuvenBelgium.

Controlling the morphology of organolead halide perovskite crystals is crucial to a fundamental understanding of the materials and to tune their properties for device applications. Here, we report a facile solution-based method for morphology-controlled synthesis of rod-like and plate-like organolead halide perovskite nanocrystals using binary capping agents. The morphology control is likely due to an interplay between surface binding kinetics of the two capping agents at different crystal facets. Read More

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http://dx.doi.org/10.1002/cnma.201700006DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5468115PMC
April 2017
30 Reads

Enhanced Electrochemical Sensing with Carbon Nanotubes Modified with Bismuth and Magnetic Nanoparticles in a Lab-on-a-Chip.

ChemNanoMat 2016 Sep 25;2(9):904-910. Epub 2016 Jul 25.

Department of Medicine, Division of Pulmonary & Critical Care Medicine, VA Palo Alto/Stanford University, Stanford, CA, 94305 (USA).

Iron plays an especially important role in human physiological functions and pathological impairments. The superior properties of carbon nanotubes (CNTs) and their modification with bismuth and magnetic nanoparticles as developed in this work have led to an extraordinary and novel material to facilitate ultrasensitive detection in the nanomolar range. Here, we present the development of an electrochemical sensor for detection of ferrous (Fe) and ferric (Fe) iron by means of CNTs modified with bismuth and magnetic nanoparticles for higher sensitivity of detection. Read More

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http://dx.doi.org/10.1002/cnma.201600174DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5110256PMC
September 2016
29 Reads

Biomimetic Crystallization of MnFeO Mediated by Peptide-Catalyzed Esterification at Low Temperature.

ChemNanoMat 2016 May 23;2(5):419-422. Epub 2015 Nov 23.

Department of Chemistry and Biochemistry, City University of New York-Hunter College, 695 Park Ave., New York, NY 10065 (USA),

Enzymes are some of the most efficient catalysts in nature. If small catalytic peptides mimic enzymes, there is potential for broad applications from catalysis for new material synthesis to drug development, due to the ease of molecular design. Recently a hydrogel-based combinatory phage display library was developed and protease-mimicking peptides were identified. Read More

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http://dx.doi.org/10.1002/cnma.201500181DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6801106PMC

Cell surface engineering to control cellular interactions.

ChemNanoMat 2016 May;2(5):376-384

3B's Research Group - Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence of Tissue Engineering and Regenerative Medicine, Avepark - Parque de Ciência e Tecnologia, Zona Industrial da Gandra, 4805-017 Barco GMR, Portugal.

Cell surface composition determines all interactions of the cell with is environment, thus cell functions such as adhesion, migration and cell-cell interactions are likely to be controlled by engineering and manipulating cell membrane. Cell membranes present a rich repertoire of molecules, therefore a versatile ground for modification. However the complex and dynamic nature of the cell surface is also a major challenge for cell surface engineering that should also involve strategies compatible with cell viability. Read More

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http://dx.doi.org/10.1002/cnma.201600047DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6398572PMC
May 2016
1 Read
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