Functionalized PEG-b-PAGE-b-PLGA triblock terpolymers as materials for nanoparticle preparation

2015 ◽  
Vol 53 (18) ◽  
pp. 2163-2174 ◽  
Author(s):  
Justyna A. Czaplewska ◽  
Tobias C. Majdanski ◽  
Markus J. Barthel ◽  
Michael Gottschaldt ◽  
Ulrich S. Schubert
Keyword(s):  
Nanoparticle Preparation ◽  
Triblock Terpolymers

scholarly journals Synthesis of Densely Immobilized Gold-Assembled Silica Nanostructures

2021 ◽  
Vol 22 (5) ◽  
pp. 2543
Author(s):  
Bomi Seong ◽  
Sungje Bock ◽  
Eunil Hahm ◽  
Kim-Hung Huynh ◽  
Jaehi Kim ◽  
...  
Keyword(s):  
Potential Method ◽  
Sers Substrate ◽  
Chloroauric Acid ◽  
Au Nps ◽  
Sio2 Surface ◽  
Color Changes ◽  
Surface Enhanced Raman ◽  
Nanoparticle Preparation ◽  
Enhanced Raman Scattering ◽  
20 Nm

In this study, dense gold-assembled SiO2 nanostructure (SiO2@Au) was successfully developed using the Au seed-mediated growth. First, SiO2 (150 nm) was prepared, modified by amino groups, and incubated by gold nanoparticles (ca. 3 nm Au metal nanoparticles (NPs)) to immobilize Au NPs to SiO2 surface. Then, Au NPs were grown on the prepared SiO2@Au seed by reducing chloroauric acid (HAuCl4) by ascorbic acid (AA) in the presence of polyvinylpyrrolidone (PVP). The presence of bigger (ca. 20 nm) Au NPs on the SiO2 surface was confirmed by transmittance electronic microscopy (TEM) images, color changes to dark blue, and UV-vis spectra broadening in the range of 450 to 750 nm. The SiO2@Au nanostructure showed several advantages compared to the hydrofluoric acid (HF)-treated SiO2@Au, such as easy separation, surface modification stability by 11-mercaptopundecanoic acid (R-COOH), 11-mercapto-1-undecanol (R-OH), and 1-undecanethiol (R-CH3), and a better peroxidase-like catalysis activity for 5,5′-Tetramethylbenzidine (TMB) and hydrogen peroxide (H2O2) reaction. The catalytic activity of SiO2@Au was two times better than that of HF-treated SiO2@Au. When SiO2@Au nanostructure was used as a surface enhanced Raman scattering (SERS) substrate, the signal of 4-aminophenol (4-ATP) on the surface of SiO2@Au was also stronger than that of HF-treated SiO2@Au. This study provides a potential method for nanoparticle preparation which can be replaced for Au NPs in further research and development.

Microphase separation and crystallization behaviors of bi-phased triblock terpolymers with a competitively dissolved middle block

Polymer ◽  
2017 ◽  
Vol 117 ◽  
pp. 140-149 ◽  
Author(s):  
Rui-Yang Wang ◽  
Xiang-Yue Wang ◽  
Bin Fan ◽  
Jun-Ting Xu ◽  
Zhi-Qiang Fan
Keyword(s):  
Microphase Separation ◽  
Crystallization Behaviors ◽  
Triblock Terpolymers

Multiarm star triblock terpolymers via sequential double click reactions

2010 ◽  
Vol 48 (7) ◽  
pp. 1557-1564 ◽  
Author(s):  
Hakan Durmaz ◽  
Aydan Dag ◽  
Duygu Gursoy ◽  
A. Levent Demirel ◽  
Gurkan Hizal ◽  
...  
Keyword(s):  
Click Reactions ◽  
Triblock Terpolymers

Collagen Nanoparticles in Drug Delivery Systems and Tissue Engineering

2021 ◽  
Vol 11 (23) ◽  
pp. 11369
Author(s):  
Ashni Arun ◽  
Pratyusha Malrautu ◽  
Anindita Laha ◽  
Hongrong Luo ◽  
Seeram Ramakrishna
Keyword(s):  
Drug Delivery ◽  
Tissue Engineering ◽  
Drug Delivery Systems ◽  
Delivery Systems ◽  
Drug Solubility ◽  
Stimuli Responsive ◽  
Preparation Methods ◽  
Nanoparticle Preparation ◽  
Responsive Behavior ◽  
Reduced Toxicity

The versatile natural polymer, collagen, has gained vast attention in biomedicine. Due to its biocompatibility, biodegradability, weak antigenicity, biomimetics and well-known safety profile, it is widely used as a drug, protein and gene carrier, and as a scaffold matrix in tissue engineering. Nanoparticles develop favorable chemical and physical properties such as increased drug half-life, improved hydrophobic drug solubility and controlled and targeted drug release. Their reduced toxicity, controllable characteristics of scaffolds and stimuli-responsive behavior make them suitable in regenerative medicine and tissue engineering. Collagen associates and absorbs nanoparticles leading to significant impacts on their biological functioning in any biofluid. This review will discuss collagen nanoparticle preparation methods and their applications and developments in drug delivery systems and tissue engineering.

Nanoparticle Preparation by Miniemulsion Polymerization

2009 ◽  
pp. 107-132 ◽  
Author(s):  
Man Wu ◽  
Elise Rotureau ◽  
Emmanuelle Marie ◽  
Edith Dellacherie ◽  
Alain Durand
Keyword(s):  
Miniemulsion Polymerization ◽  
Nanoparticle Preparation

scholarly journals Hierarchical Self-Assembly of Supramolecular Double-Comb Triblock Terpolymers

2018 ◽  
Vol 7 (10) ◽  
pp. 1168-1173 ◽  
Author(s):  
Anton H. Hofman ◽  
Ivan Terzic ◽  
Marc C. A. Stuart ◽  
Gerrit ten Brinke ◽  
Katja Loos
Keyword(s):  
Self Assembly ◽  
Triblock Terpolymers

Laser ablation of gadolinium targets in liquids for nanoparticle preparation

2008 ◽  
Vol 93 (4) ◽  
pp. 837-841 ◽  
Author(s):  
N. V. Tarasenko ◽  
A. V. Butsen ◽  
A. A. Nevar
Keyword(s):  
Laser Ablation ◽  
Nanoparticle Preparation
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