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Viscosity and diffusion: crowding and salt effects in protein solutions

Heinen, M.、Zanini, F.、Schreiber, F. 等 12 位作者2012-01-01JuSER (Forschungszentrum Jülich)

We report on a joint experimental–theoretical study of collective diffusion in, and static shear viscosity of solutions of bovine serum albumin (BSA) proteins, focusing on the dependence on protein and salt concentration. Data obtained from dynamic light scattering and rheometric measurements are compared to theoretic…

Material Dynamics and PropertiesSurfactants and Colloidal SystemsProtein Interaction Studies and Fluorescence Analysis

Dimethylaluminium aldiminophenolates: synthesis, characterization and ring-opening polymerization behavior towards lactides

Wenjuan Zhang、Youhong Wang、Wen‐Hua Sun 等 5 位作者2012-01-01Dalton Transactions

The stoichiometric reaction of the salicylaldimine derivatives (L1-L12) with trimethylaluminium afforded the corresponding dimethylaluminium aldiminophenolates (C1-C12), which were fully characterized by NMR spectroscopy and elemental analysis. The molecular structures of the representative complexes C1, C6, and C8 we…

Advanced Polymer Synthesis and Characterizationbiodegradable polymer synthesis and propertiesCarbon dioxide utilization in catalysis

An efficient layer-by-layer self-assembly of metal-TiO2 nanoring/nanotube heterostructures, M/T-NRNT (M = Au, Ag, Pt), for versatile catalytic applications

Fang‐Xing Xiao2012-01-01Chemical Communications

We have successfully developed a facile two-step anodization combined layer-by-layer (LBL) self-assembly route for rapid fabrication of well-defined metal-TiO(2) nanoring/nanotube combined nanostructures, i.e. M/T-NRNT (M = Au, Ag, Pt). These hierarchically self-assembled hybrid systems are demonstrated to exhibit ver…

TiO2 Photocatalysis and Solar CellsAdvanced Photocatalysis TechniquesQuantum Dots Synthesis And Properties

Stimuli-responsive peroxidase mimicking at a smart graphene interface

Meng Liu、Huimin Zhao、Shuo Chen 等 5 位作者2012-01-01Chemical Communications

A synergistic graphene-based catalyst was engineered by the in situ growth of "naked" Au-nanoparticles (NPs) on graphene sheets. The catalyst exhibits excellent switchable peroxidase-like activity in response to specific DNA.

Nanocluster Synthesis and ApplicationsAdvanced Nanomaterials in CatalysisGraphene and Nanomaterials Applications

Functionalization of graphene by electrophilic alkylation of reduced graphite

Jan M. Englert、Kathrin C. Knirsch、Christoph Dotzer 等 7 位作者2012-01-01Chemical Communications

The reaction of Na/K-reduced graphite with hexyliodide represents a new, versatile and mild approach to synthesize alkylated graphene derivatives, which were characterized by a combination of Raman spectroscopy, TEM and TGA/MS analysis.

Advancements in Battery MaterialsGraphene research and applicationsGraphene and Nanomaterials Applications

Synthesis of highly chemiluminescent graphene oxide/silver nanoparticle nano-composites and their analytical applications

Yi He、Hua Cui2012-01-01Journal of Materials Chemistry

A fast, linker free, one step strategy for in situ preparation of graphene oxide/Ag nanoparticle (GO-AgNP) nano-composites was proposed by reducing AgNO3 with chemiluminescent reagent luminol in the presence of GO. The nano-composites were characterized by transmission electron microscopy, energy-dispersive spectrosco…

Advanced biosensing and bioanalysis techniquesCarbon and Quantum Dots ApplicationsNanocluster Synthesis and Applications

Steric hindrances create a discrete linear Dy4 complex exhibiting SMM behaviour

Shuang‐Yan Lin、Lang Zhao、Hongshan Ke 等 7 位作者2012-01-01Dalton Transactions

Two linear tetranuclear lanthanide complexes of general formula [Ln(4)(L)(2)(C(6)H(5)COO)(12)(MeOH)(4)], where HL = 2,6-bis((furan-2-ylmethylimino)methyl)-4-methylphenol, () and Ln(III) = Dy(III) (1) and Gd(III) (2), have been synthesized and characterized. The crystal structural analysis demonstrates that two Schiff-…

Magnetism in coordination complexesLanthanide and Transition Metal ComplexesElectron Spin Resonance Studies

Triple-shape memory effect of covalently crosslinked polyalkenamer based semicrystalline polymer blends

José María Cuevas、Raquel Rubio、Lorena Germán 等 7 位作者2012-01-01Soft Matter

Triple-shape memory polymers are developed by blending and crosslinking two semicrystalline polymers (poly(cyclooctene), PCO, and polyethylene, PE) towards creating two pronounced segregated crystalline domains within a covalently crosslinked network. The key thermo-mechanical properties of a series of a polyalkenamer…

Polymer composites and self-healingMarine Sponges and Natural ProductsSynthetic Organic Chemistry Methods

Ultra fine MnO2 nanowire based high performance thin film rechargeable electrodes: Effect of surface morphology, electrolytes and concentrations

R. Ranjusha、A. Sreekumaran Nair、Seeram Ramakrishna 等 10 位作者2012-01-01Journal of Materials Chemistry

The present study demonstrates a novel approach by which titanium foils coated with MnO2 nanowires can be processed into a high surface area electrode for rechargeable energy storage applications. A detailed study has been performed to elucidate how surface morphology and redox reaction behaviors underlying these elec…

Supercapacitor Materials and FabricationConducting polymers and applicationsAdvanced battery technologies research

Advances in the Surface Engineering of Upconversion Nanocrystals

Chao Liu、Lingxing Zhang、Qifeng Zheng 等 6 位作者2012-01-01Science of Advanced Materials

National Natural Science Foundation of China [21074103]; Natural Science Foundation of Fujian Province [2010J05033]; Fundamental Research Funds for the Central Universities [2010121018]

Luminescence Properties of Advanced MaterialsIon-surface interactions and analysisNuclear materials and radiation effects

Unique magnetic properties and magnetization reversal process of CoFe2O4 nanotubes fabricated by electrospinning

Jiecai Fu、Junli Zhang、Yong Peng 等 8 位作者2012-01-01Nanoscale

CoFe(2)O(4) nanotubes have been directly fabricated by single-capillary spinneret electrospinning. The external diameter of the CoFe(2)O(4) nanotubes ranges from 60 nm to 160 nm. The morphology and structure characterizations show that individual CoFe(2)O(4) nanotubes are made of CoFe(2)O(4) nanocrystals stacking alon…

Magnetic properties of thin filmsMagnetic Properties and Synthesis of FerritesElectromagnetic wave absorption materials

Predictably tuning the frontier molecular orbital energy levels of panchromatic low band gap BODIPY-based conjugated polymers

Bhooshan C. Popere、Andrea M. Della Pelle、Ambata Poe 等 5 位作者2012-01-01Chemical Science

Here we report the synthesis, electrochemical properties, and optical properties of five novel π-conjugated alternating copolymers based on the BODIPY core. These polymers were synthesized via the Sonogashira polymerization reaction and contain BODIPY units alternating with comonomers such as 9,9-bis(2-ethylhexyl)-9H-…

Organic Electronics and PhotovoltaicsOrganic Light-Emitting Diodes ResearchLuminescence and Fluorescent Materials

A general green strategy for fabricating metal nanoparticles/polyoxometalate/graphene tri-component nanohybrids: enhanced electrocatalytic properties

Rongji Liu、Shiwen Li、Xuelian Yu 等 7 位作者2012-01-01Journal of Materials Chemistry

The well-defined metal NPs@POM–GNS tri-component nanohybrids were synthesized by a green, facile, one-pot method. The obtained nanohybrids exhibited exciting electrocatalytic activity for methanol and formic acid oxidation.

Electrocatalysts for Energy ConversionPolyoxometalates: Synthesis and ApplicationsNanomaterials for catalytic reactions

Self-assembling DNA–peptide hybrids: morphological consequences of oligonucleotide grafting to a pathogenic amyloid fibrils forming dipeptide

Nidhi Gour、Dawid Kedracki、Ilyès Safir 等 5 位作者2012-01-01Chemical Communications

For the very first time, highly efficient synthesis of DNA-peptide hybrids to scaffold self-assembled nanostructures is described. Oligonucleotide conjugation to the diphenylalanine dipeptide triggers a morphological transition from fibrillar to vesicular structures which may potentially be used as delivery vehicles,…

RNA Interference and Gene DeliverySupramolecular Self-Assembly in MaterialsPolydiacetylene-based materials and applications

An introduction to the tools hosted in the Bilbao Crystallographic Server

Emre S. Tasci、Gemma de la Flor、D. Orobengoa 等 6 位作者2012-01-01EPJ Web of Conferences

The programs hosted in the Bilbao Crystallographic Server (http://www.cryst.ehu.es) are briefly explained along with worked examples on various cases related to different fields of applications. It is our aim to have this text acting as a primer on the various usage of the crystallographic tools in conjunction with ea…

Crystal Structures and PropertiesX-ray Diffraction in CrystallographyHistory and advancements in chemistry

Solid-state thermolysis of ammonia borane and related materials for high-capacity hydrogen storage

Ping Wang2012-01-01Dalton Transactions

Ammonia borane (NH(3)BH(3), AB) is a unique molecular crystal containing an intriguingly high density of hydrogen. In the past several years, AB has received extensive attention as a promising hydrogen storage medium. Several strategies have been successfully developed for promoting H(2) release and for suppressing th…

Hydrogen Storage and MaterialsHybrid Renewable Energy SystemsAmmonia Synthesis and Nitrogen Reduction

Anion-controlled morphologies and spectral features of cyanine-based nanoGUMBOS – an improved photosensitizer

Atiya Jordan、Susmita Das、Noureen Siraj 等 9 位作者2012-01-01Nanoscale

The ability to control the morphologies and spectral properties of organic low-dimensional nanomaterials is of paramount importance. The research reported herein demonstrates a template-free approach to tailored morphological and optical properties for a novel class of pseudoisocyanine (PIC)-based fluorescent organic…

Perovskite Materials and ApplicationsPorphyrin and Phthalocyanine ChemistryLuminescence and Fluorescent Materials

Fluorescence bioimaging with conjugated polyelectrolytes

Guangxue Feng、Dan Ding、Bin Liu2012-01-01Nanoscale

This review summarizes the recent developments in fluorescent conjugated polyelectrolytes (CPEs) in bioimaging. The CPEs discussed include linear-, hyperbranched-, and polyhedral oligomeric silsesquioxanes (POSS)-based derivatives. Originating from their special optical properties, good photostability, low cytotoxicit…

Polymer Surface Interaction StudiesLuminescence and Fluorescent MaterialsDendrimers and Hyperbranched Polymers

Reduction-sensitive core-cross-linked mPEG–poly(ester-carbonate) micelles for glutathione-triggered intracellular drug release

Lesan Yan、Wenbin Wu、Wei Zhao 等 9 位作者2012-01-01Polymer Chemistry

A functionalized six-membered cyclic carbonate monomer containing a protected thiol group, 2-(2,4-dinitrophenylthio)ethyl-5-methyl-2-oxo-1,3-dioxane-5-carboxylate (MTC), was prepared. Ring-opening polymerization (ROP) of MTC and L-lactide (LA) initiated by monohydroxyl poly(ethylene glycol) (mPEG) was successfully per…

Nanoparticle-Based Drug DeliveryAdvanced Polymer Synthesis and Characterizationbiodegradable polymer synthesis and properties

Facile fabrication of carbonaceous nanospheres loaded with silver nanoparticles as antibacterial materials

Jianghu Cui、Chaofan Hu、Yunhua Yang 等 8 位作者2012-01-01Journal of Materials Chemistry

Carbonaceous nanospheres with silver nanoparticles (CNs-Ag) composites were prepared by a facile and low cost method. Silver nanoparticles were successfully loaded onto the surface of carbonaceous nanospheres, which were examined by X-ray diffraction, UV-vis spectra, transmission electron microscopy, energy dispersive…

Nanoparticles: synthesis and applicationsGraphene and Nanomaterials ApplicationsNanotechnology research and applications