A5102926544- Polymer Surface Interaction Studies
- Nanoparticle-Based Drug Delivery
- Quantum Dots Synthesis And Properties
- Advanced Drug Delivery Systems
- Hydrogels: synthesis, properties, applications
- Electrostatics and Colloid Interactions
- Dendrimers and Hyperbranched Polymers
- Advanced Polymer Synthesis and Characterization
- Carbon and Quantum Dots Applications
- Polymer Nanocomposite Synthesis and Irradiation
- Nanocluster Synthesis and Applications
- Advanced biosensing and bioanalysis techniques
- Nanomaterials for catalytic reactions
- Innovative Microfluidic and Catalytic Techniques Innovation
- Photopolymerization techniques and applications
- Electrochemical sensors and biosensors
- Conducting polymers and applications
- Topological Materials and Phenomena
- Advanced Materials Characterization Techniques
- Gold and Silver Nanoparticles Synthesis and Applications
- Surfactants and Colloidal Systems
- RNA Interference and Gene Delivery
- Supercapacitor Materials and Fabrication
- Surface Modification and Superhydrophobicity
- Blood properties and coagulation
East China University of Science and Technology
2014-2020
State Key Laboratory of Chemical Engineering
2014-2020
Xinjiang University
2012
The immobilization of bovine serum albumins (BSA) onto cationic spherical polyelectrolyte brushes (SPB) consisting a solid polystyrene (PS) core and densely grafted poly(2-aminoethyl methacrylate hydrochloride) (PAEMH) shell was studied by small-angle X-ray scattering (SAXS). observed dynamics adsorption BSA SPB time-resolved SAXS can be divided into two stages. In the first stage (tens milliseconds), added proteins as in-between bridge instantaneously caused aggregation SPB. Then penetrated...
Thermosensitive microgels consisting of a solid core polystyrene and shell cross-linked poly(N-isopropylacrylamide) (PNIPA) were synthesized as nano-reactors, in which Ag-Pd bimetallic nanoparticles prepared through simultaneous situ reduction reaction. The spatial distribution metallic the was analyzed by small angle X-ray scattering (SAXS) results indicated that metal mainly located inner layer microgels. catalytic activity investigated using p-nitrophenol to p-aminophenol NaBH4 model data...
Heavy metal detection has become very important for the protection of water resource. In this work, a novel controllable probe is presented sensitive Pb2+ in aqueous solutions. The was synthesized via immobilization surface functionalized carbon dots (named as CAEA-Hs) into shell spherical polyelectrolyte brushes (SPB). fluorescence CAEA-H firstly "turned off" electrostatic interaction induced quenching. Based on aggregation emission enhancement (AIEE), immobilized could be specifically...
Core-shell-corona silica/polymer hybrid nanoparticles with narrow size distribution were prepared in the template of spherical polyelectrolyte brushes (SPB) which consist a solid polystyrene (PS) core densely grafted linear poly(acrylic acid) (PAA) chains. The microstructure obtained was studied by small-angle X-ray scattering (SAXS) and combination dynamic light (DLS) transmission electron microscopy (TEM). generation silica shell within brush is confirmed significant increase density...
Abstract Polyaniline/nano‐TiO 2 composites with the content of nano‐TiO varying from 6.2 wt % to 24.1 were prepared by using solid‐state synthesis method at room temperature. The structure and morphology characterized Fourier transform infrared (FTIR) spectra, ultraviolet‐visible (UV–vis) absorption X‐ray diffraction (XRD), scanning electron microscopy (SEM), transmission (TEM). electrochemical performances investigated galvanostatic charge–discharge measurement, cyclic voltammetry (CV),...
This study focuses on the structural rearrangements and photoluminescent behavior of pyrolytically derived carbon dots when subjected to a series cyclic voltammetry sweeps. Although electrical signals involved are not pronounced, multiple electrochemical cycling results in progressive suppression photoluminescence, so that after 42 sweeps intensity is reduced by one order magnitude. At same time, fluorescence component stemming from organic fluorophores blue-shifted, while contribution...
Multilayer modified spherical polyelectrolyte brushes were prepared through alternate deposition of positively charged poly(allylamine hydrochloride) (PAH) and negatively poly-l-aspartic acid (PAsp) onto poly(acrylic acid) (PAA) (SPBs) on a poly(styrene) core. The charge reversal determined by the zeta potential indicated success layer-by-layer (LBL) deposition. change structure during construction multilayer SPBs was observed small-angle X-ray scattering (SAXS). SAXS results that some PAH...
Interactions among annealed spherical polyelectrolyte brushes (SPB) in concentrated aqueous dispersion under the effect of concentration, pH, and salt concentration are investigated by means rheology, small angle X-ray scattering (SAXS). SPB consist a solid polystyrene (PS) core linear poly(acrylic acid) (PAA) chains densely grafted onto one end. Rheological investigation demonstrates that viscosity, storage modulus G′ loss G″ increase significantly upon increasing pH value which reflects...
ABSTRACT The spatial correlation of counterions [Li + , Na Rb Cs NH 4 (CH 3 ) N ] with spherical polyelectrolyte brushes (SPBs), which consist a PS core and chemically grafted PSS chains, was comprehensively studied through combination SAXS, DLS, Zeta potential. Results show that the SAXS intensity profiles brush appears to be “insensitive” concentration . By contrast, introducing salt ions density lower than sodium [NH Li into layer will cause decrease in scattering while those higher (Rb...
ABSTRACT The immobilization of lysozymes (pI = 11) onto anionic spherical polyelectrolyte brushes (SPB) which consist a solid polystyrene core and densely grafted poly(styrene sulfonate) (PSS) shell was systematically studied by fluorescence spectroscopy small angle X‐ray scattering. Results show that the capture lysozyme PSS brush is dynamic process, involves quick agglomeration stage slow rearrangement one. And inclines to immobilize in inner layer brush, saturation adsorption SPB...
Novel fluorescence-labeled spherical polyelectrolyte brushes consisting of a fluorescent polystyrene (PS) nanocomposite core and poly(acylic acid) (PAA) brush shell were successfully prepared. Quantum dots (QDs) well confined in the PS through hybrid emulsion polymerization. PAA chains then grafted onto surface to form structure photoemulsion The obtained are highly pH sensitive addition their excellent dispersibility water. Fluorescent nanoclusters introduced into acquire high detection...
Hollow silica nanoparticles were prepared through generating a layer in spherical polyelectrolyte nanogels, which consisted of solid core polystyrene and shell crosslinked poly(acrylic acid), followed by removing the <italic>via</italic> solvent dissolution.
Interaction among concentrated spherical polyelectrolyte brushes (SPB) dispersions in water was systematically investigated by means of small-angle X-ray scattering (SAXS), wide-angle (WAXS), and rheological methods. SPB consist a core polystyrene (PS) poly(acrylic acid) (PAA) brush shell. The "polyelectrolyte peak" appeared SAXS spectra observed WAXS curves for the first time. size peak properties were found to be strongly effected concentration, pH, ionic strength. Combined with SAXS,...
Received 14 June 2017DOI:https://doi.org/10.1103/PhysRevB.95.239905©2017 American Physical SocietyPhysics Subject Headings (PhySH)Research AreasPhononsTopological materialsPhysical SystemsDirac semimetalTechniquesRaman spectroscopyTime-resolved infrared spectroscopyCondensed Matter, Materials & Applied Physics