Stimuli-responsive nano- and microstructures based on gold nanoparticles

2016 ◽  
Author(s):  
K. G. Shevchenko ◽  
V. R. Cherkasov ◽  
I. L. Sokolov ◽  
M. P. Nikitin
Keyword(s):  
Gold Nanoparticles ◽  
Stimuli Responsive

Thermoswitchable Janus Gold Nanoparticles with Stimuli-Responsive Hydrophilic Polymer Brushes

Langmuir ◽  
2016 ◽  
Vol 32 (17) ◽  
pp. 4297-4304 ◽  
Author(s):  
Xiaoqin Niu ◽  
Fen Ran ◽  
Limei Chen ◽  
Gabriella Jia-En Lu ◽  
Peiguang Hu ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Polymer Brushes ◽  
Hydrophilic Polymer ◽  
Stimuli Responsive

From multi-responsive tri- and diblock copolymers to diblock-copolymer-decorated gold nanoparticles: the effect of architecture on micellization behaviors in aqueous solutions

Soft Matter ◽  
2015 ◽  
Vol 11 (24) ◽  
pp. 4830-4839 ◽  
Author(s):  
Lichun Song ◽  
Hui Sun ◽  
Xiaolu Chen ◽  
Xia Han ◽  
Honglai Liu
Keyword(s):  
Gold Nanoparticles ◽  
Aqueous Solutions ◽  
Diblock Copolymer ◽  
Triblock Copolymer ◽  
Diblock Copolymers ◽  
Stimuli Responsive ◽  
Aba Triblock Copolymer

This work reports on the aqueous stimuli-responsive behaviors of an ABA triblock copolymer, a BAB triblock copolymer, an AB diblock copolymer and citrate-based gold nanoparticles decorated with AB diblock copolymers.

scholarly journals Radiolytic synthesis of gold nanoparticles in HEMA-based hydrogels: Potentialities for imaging nanocomposites

Nukleonika ◽  
2021 ◽  
Vol 66 (4) ◽  
pp. 165-177
Author(s):  
Katsiaryna Dziarabina ◽  
Uliana Pinaeva ◽  
Sławomir Kadłubowski ◽  
Piotr Ulański ◽  
Xavier Coqueret
Keyword(s):  
Gold Nanoparticles ◽  
Monomer Conversion ◽  
Thermomechanical Properties ◽  
Temperature Sensitive ◽  
Trimethylammonium Chloride ◽  
Stimuli Responsive ◽  
Monomer Composition ◽  
Swelling Characteristics ◽  
High Degree ◽  
Radiolytic Synthesis

Abstract This article reports on the radiolytic synthesis of nanocomposites containing gold nanoparticles (AuNPs) within two types of hydrogels based on 2-hydroxyethyl methacrylate (HEMA): (i) plain networks with various contents in ethylene glycol dimethacrylate (EGDMA), as a cross-linker and (ii) stimuli-responsive (SR) networks prepared from these monomers copolymerized with [2-(methacryloyloxy)ethyl]trimethylammonium chloride (MADQUAT) to confer pH-switchable swelling. Hydrogels were prepared by photopolymerization with well-defined composition and a high degree of monomer conversion using two experimental procedures, as xerogels or in aqueous solution. Besides MADQUAT, acrylic acid (AA) or N-isopropylacrylamide have been tested as copolymers, yielding pHor temperature-sensitive hydrogels, respectively. Isothermal swelling in water was affected by monomer composition. Electron beam (EB) irradiation at doses up to 100 kGy of poly(HEMA) xerogels and water-swollen networks prepared with 0.5 wt% of EGDMA had a moderate impact on swelling characteristics and thermomechanical properties of the plain materials, whereas small amounts of extractables were formed. Poly(HEMA)-based nanocomposites containing AuNPs were successfully obtained by EB irradiation of samples swollen by aqueous solutions of Au(III). The effects of dose and cross-linking density on the formation of AuNPs were monitored by UV-visible spectroscopy. Irradiation at well-defined temperatures of the Au(III)-loaded SR hydrogels induced the formation of nanoparticles with size-dependent features, whereas the efficiency of Au(III) reduction at 10 kGy was not significantly affected by the network structure. EB-induced reduction of Au(III) in poly(HEMA) hydrogels using a lead mask to generate well-defined patterns yielded coloured and long-lasting images in the zones where the nanocomposite was formed.

scholarly journals Stimuli-Responsive Materials: Protein/Polymer-Based Dual-Responsive Gold Nanoparticles with pH-Dependent Thermal Sensitivity (Adv. Funct. Mater. 7/2012)

2012 ◽  
Vol 22 (7) ◽  
pp. 1322-1322 ◽  
Author(s):  
Malte S. Strozyk ◽  
Munish Chanana ◽  
Isabel Pastoriza-Santos ◽  
Jorge Pérez-Juste ◽  
Luis M. Liz-Marzán
Keyword(s):  
Gold Nanoparticles ◽  
Thermal Sensitivity ◽  
Stimuli Responsive ◽  
Responsive Materials ◽  
Protein Polymer ◽  
Dual Responsive ◽  
Ph Dependent

Elastin-based stimuli-responsive gold nanoparticles

2010 ◽  
Vol 46 (18) ◽  
pp. 3071 ◽  
Author(s):  
Vincent Lemieux ◽  
P. Hans H. M. Adams ◽  
Jan C. M. van Hest
Keyword(s):  
Gold Nanoparticles ◽  
Stimuli Responsive
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