Bipyridine-functionalized amphiphilic block copolymers as support materials for the aerobic oxidation of primary alcohols in aqueous media

RSC Advances ◽  
2015 ◽  
Vol 5 (48) ◽  
pp. 38235-38242 ◽  
Author(s):  
Henning Sand ◽  
Ralf Weberskirch
Keyword(s):  
Block Copolymers ◽  
Aerobic Oxidation ◽  
Aqueous Media ◽  
Polymer Nanoparticles ◽  
Amphiphilic Block Copolymers ◽  
Primary Alcohols ◽  
Support Materials

A micellar catalytic version of the aerobic oxidation of primary alcohols was successfully developed based on core-functionalized polymer nanoparticles.

Synthesis and self-association in aqueous media of poly(ethylene oxide)/poly(ethyl glycidyl carbamate) amphiphilic block copolymers

Polymer ◽  
2006 ◽  
Vol 47 (14) ◽  
pp. 4905-4915 ◽  
Author(s):  
Philip Dimitrov ◽  
Alicja Utrata-Wesołek ◽  
Stanislav Rangelov ◽  
Wojciech Wałach ◽  
Barbara Trzebicka ◽  
...  
Keyword(s):  
Block Copolymers ◽  
Ethylene Oxide ◽  
Aqueous Media ◽  
Amphiphilic Block Copolymers ◽  
Poly Ethylene Oxide ◽  
Self Association ◽  
Poly Ethylene ◽  
Glycidyl Carbamate

scholarly journals Graphene exfoliation in organic solvents and switching solubility in aqueous media with the aid of amphiphilic block copolymers

2012 ◽  
Vol 22 (40) ◽  
pp. 21507 ◽  
Author(s):  
Theodosis Skaltsas ◽  
Nikolaos Karousis ◽  
Hui-Juan Yan ◽  
Chun-Ru Wang ◽  
Stergios Pispas ◽  
...  
Keyword(s):  
Block Copolymers ◽  
Organic Solvents ◽  
Aqueous Media ◽  
Amphiphilic Block Copolymers

Micellization in pH-sensitive amphiphilic block copolymers in aqueous media and the formation of metal nanoparticles

2005 ◽  
Vol 128 ◽  
pp. 129 ◽  
Author(s):  
Maria Vamvakaki ◽  
Lampros Papoutsakis ◽  
Vasilios Katsamanis ◽  
Theodora Afchoudia ◽  
Panagiota G. Fragouli ◽  
...  
Keyword(s):  
Block Copolymers ◽  
Metal Nanoparticles ◽  
Aqueous Media ◽  
Ph Sensitive ◽  
Amphiphilic Block Copolymers

scholarly journals Self-Assembled Nanoparticles Based on Block-Copolymers of Poly(2-deoxy-2-methacrylamido-d-glucose)/Poly(N-vinyl succinamic acid) with Poly(O-cholesteryl methacrylate) for Delivery of Hydrophobic Drugs

2021 ◽  
Vol 22 (21) ◽  
pp. 11457
Author(s):  
Mariia Levit ◽  
Alena Vdovchenko ◽  
Apollinariia Dzhuzha ◽  
Natalia Zashikhina ◽  
Elena Katernyuk ◽  
...  
Keyword(s):  
Block Copolymers ◽  
Chain Transfer ◽  
Aqueous Media ◽  
Spherical Shape ◽  
Amphiphilic Block Copolymers ◽  
Hydrodynamic Diameter ◽  
Amphiphilic Copolymers ◽  
Succinamic Acid ◽  
Cholesteryl Methacrylate

The self-assembly of amphiphilic block-copolymers is a convenient way to obtain soft nanomaterials of different morphology and scale. In turn, the use of a biomimetic approach makes it possible to synthesize polymers with fragments similar to natural macromolecules but more resistant to biodegradation. In this study, we synthesized the novel bio-inspired amphiphilic block-copolymers consisting of poly(N-methacrylamido-d-glucose) or poly(N-vinyl succinamic acid) as a hydrophilic fragment and poly(O-cholesteryl methacrylate) as a hydrophobic fragment. Block-copolymers were synthesized by radical addition–fragmentation chain-transfer (RAFT) polymerization using dithiobenzoate or trithiocarbonate chain-transfer agent depending on the first monomer, further forming the hydrophilic block. Both homopolymers and copolymers were characterized by 1H NMR and Fourier transform infrared spectroscopy, as well as thermogravimetric analysis. The obtained copolymers had low dispersity (1.05–1.37) and molecular weights in the range of ~13,000–32,000. The amphiphilic copolymers demonstrated enhanced thermal stability in comparison with hydrophilic precursors. According to dynamic light scattering and nanoparticle tracking analysis, the obtained amphiphilic copolymers were able to self-assemble in aqueous media into nanoparticles with a hydrodynamic diameter of approximately 200 nm. An investigation of nanoparticles by transmission electron microscopy revealed their spherical shape. The obtained nanoparticles did not demonstrate cytotoxicity against human embryonic kidney (HEK293) and bronchial epithelial (BEAS-2B) cells, and they were characterized by a low uptake by macrophages in vitro. Paclitaxel loaded into the developed polymer nanoparticles retained biological activity against lung adenocarcinoma epithelial cells (A549).

Stimuli responsive amphiphilic block copolymers for aqueous media synthesised via reversible addition fragmentation chain transfer polymerisation (RAFT)

Polymer ◽  
2005 ◽  
Vol 46 (18) ◽  
pp. 7726-7740 ◽  
Author(s):  
Murat Mertoglu ◽  
Sébastien Garnier ◽  
André Laschewsky ◽  
Katja Skrabania ◽  
Joachim Storsberg
Keyword(s):  
Block Copolymers ◽  
Chain Transfer ◽  
Aqueous Media ◽  
Amphiphilic Block Copolymers ◽  
Stimuli Responsive ◽  
Reversible Addition
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