Amphiphilic Block Copolymers Synthesized via RAFT: Stimulus-Induced Nanoscale Assembly and Cross-linking in Aqueous Media

2009 ◽  
pp. 195-215 ◽  
Author(s):  
Matthew G. Kellum ◽  
Adam E. Smith ◽  
Xuewei Xu ◽  
Charles L. McCormick
Keyword(s):  
Block Copolymers ◽  
Aqueous Media ◽  
Amphiphilic Block Copolymers ◽  
Cross Linking ◽  
Nanoscale Assembly

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 A facile strategy for manipulating micellar size and morphology through intramolecular cross-linking of amphiphilic block copolymers

2017 ◽  
Vol 8 (23) ◽  
pp. 3647-3656 ◽  
Author(s):  
Ryoto Tanaka ◽  
Kodai Watanabe ◽  
Takuya Yamamoto ◽  
Kenji Tajima ◽  
Takuya Isono ◽  
...  
Keyword(s):  
Block Copolymer ◽  
Block Copolymers ◽  
Self Assembly ◽  
Amphiphilic Block Copolymers ◽  
Amphiphilic Block Copolymer ◽  
Cross Linking ◽  
Micellar Size ◽  
System P ◽  
Assembly Behavior ◽  
Size And Morphology

The effect of intramolecular cross-linking on aqueous self-assembly behavior was systematically investigated based on an amphiphilic block copolymer system.

Analysis of Thiol-sensitive Core-cross-linked Polymeric Micelles Carrying Nucleoside Pendant Groups using 'On-line' Methods: Effect of Hydrophobicity on Cross-linking and Degradation

2011 ◽  
Vol 64 (6) ◽  
pp. 766 ◽  
Author(s):  
Bianca M. Blunden ◽  
Donald S. Thomas ◽  
Martina H. Stenzel
Keyword(s):  
Block Copolymers ◽  
Polymeric Micelles ◽  
Raft Polymerization ◽  
Amphiphilic Block Copolymers ◽  
Cross Linking ◽  
Copolymer Composition ◽  
Reversible Addition ◽  
On Line ◽  
Styrene Content ◽  
Poly Ethylene

Amphiphilic block copolymers were prepared via reversible–addition fragmentation chain transfer (RAFT) polymerization and their synthesis, cross-linking, and degradation were studied using on-line monitoring. The focus of this work is the systematic alteration of the hydrophobic block using copolymers based on 5′-O-methacryloyluridine (MAU) and styrene at different compositions to determine the effect of the copolymer composition on the properties of the micelle. A poly(poly(ethylene glycol) methyl ether methacrylate) (PEGMA) macroRAFT agent was chain extended with a mixture of styrene and MAU. In both systems, an increasing fraction of styrene was found to reduce the rate of polymerization, but the functionality of the RAFT system was always maintained. The amphiphilic block copolymers were dialyzed against water to generate micelles with sizes between 17 and 25 nm according to dynamic light scattering (DLS). Increasing styrene content lead to smaller micelles (determined by DLS and transmission electron microscopy) and to lower critical micelle concentrations, which was measured using surface tensiometry. The micelles were further stabilized via core-cross-linking using bis(2-methacroyloxyethyl) disulfide as crosslinker. NMR analysis revealed a faster consumption of crosslinker with higher styrene content. These stable cross-linked micelles were investigated regarding their ability to degrade in the presence of dithiothreitol as a model reductant. Increasing the styrene content resulted in a faster degradation of the cross-linked micelles into unimers.

Silica/organosilica cross-linked block copolymer micelles: a versatile theranostic platform

2017 ◽  
Vol 46 (3) ◽  
pp. 569-585 ◽  
Author(s):  
Dechao Niu ◽  
Yongsheng Li ◽  
Jianlin Shi
Keyword(s):  
Block Copolymer ◽  
Block Copolymers ◽  
Hybrid Materials ◽  
Biomedical Applications ◽  
Recent Progress ◽  
Amphiphilic Block Copolymers ◽  
Cross Linking ◽  
Design Synthesis ◽  
Block Copolymer Micelles ◽  
Copolymer Micelles

Silica/organosilica cross-linked block copolymer micelles are a novel class of hybrid materials that combine the advantages of amphiphilic block copolymers and silica/organosilica cross-linking agents into one unit. This Tutorial Review summarizes the recent progress in the design, synthesis and biomedical applications of various silica/organosilica cross-linked block copolymer micelles.

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

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.

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
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