A Convenient, Transition Metal-Catalyzed Route to Water-Soluble Amphiphilic Organometallic Block Copolymers:  Synthesis and Aqueous Self-Assembly of Poly(ethylene oxide)-block-poly(ferrocenylsilane)

2000 ◽  
Vol 33 (1) ◽  
pp. 8-10 ◽  
Author(s):  
Rui Resendes ◽  
Jason Massey ◽  
Hendrik Dorn ◽  
Mitchell A. Winnik ◽  
Ian Manners
Keyword(s):  
Block Copolymers ◽  
Transition Metal ◽  
Ethylene Oxide ◽  
Self Assembly ◽  
Water Soluble ◽  
Poly Ethylene Oxide ◽  
Transition Metal Catalyzed ◽  
Poly Ethylene ◽  
Metal Catalyzed

Micellar self-assembly, bridging and gelling behaviour of two reverse triblock poly(butylene oxide)–poly(ethylene oxide)–poly(butylene oxide) copolymers with lengthy hydrophilic blocks

RSC Advances ◽  
2014 ◽  
Vol 4 (105) ◽  
pp. 60484-60496 ◽  
Author(s):  
Adriana Cambón ◽  
Edgar Figueroa-Ochoa ◽  
Mateo Blanco ◽  
Silvia Barbosa ◽  
José Félix Armando Soltero ◽  
...  
Keyword(s):  
Block Copolymers ◽  
Ethylene Oxide ◽  
Self Assembly ◽  
Low Concentrations ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene

Reverse architecture of BOnEOmBOn block copolymers enables the formation of micellar clusters and viscous gels at low concentrations by chain bridging.

Nanoparticles from Polylactide and Polyether Block Copolymers: Formation, Properties, Encapsulation, and Release of Pyrene—Fluorescent Model of Hydrophobic Drug

2006 ◽  
Vol 6 (9) ◽  
pp. 3242-3251 ◽  
Author(s):  
Stanislaw Slomkowski ◽  
Mariusz Gadzinowski ◽  
Stanislaw Sosnowski ◽  
Izabela Radomska-Galant ◽  
Andrea Pucci ◽  
...  
Keyword(s):  
Block Copolymers ◽  
Ethylene Oxide ◽  
Conformational Change ◽  
Self Assembly ◽  
Uv Light ◽  
Critical Aggregation Concentration ◽  
Diameter Distribution ◽  
Hydrophobic Drug ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene

Polylactide-b-polyglycidol-b-poly(ethylene oxide) terpolymers and their derivatives with carboxyl and 4-(phenylazo)phenyl labels in polyglycidol blocks were used for formation of nanoparticles. Nanoparticles were produced by self assembly of terpolymer macromolecules in water above the critical aggregation concentration and by dialysis of terpolymer solutions in 1,4-dioxane against water. For terpolymers with 4-(phenylazo)phenyl labels critical aggregation concentrations increased after irradiation with UV light (300 < λ < 400 nm) inducing conformational change of the label from trans- to cis-conformation. Diameters of nanoparticles obtained by self-assembly of macromolecules ranged from 20 to 44 nm. Dialysis yielded nanoparticles with bimodal diameter distribution. One fraction had diameters below 35 nm and diameters of the second fraction were in a range from 350 to 2300 nm, depending on terpolymer structure. Mixtures of terpolymers with poly(L,L-lactide) and poly(D,D-lactide) blocks yielded nanoparticles with diameters from 350 to 440 nm. Pyrene was incorporated into nanoparticles by partition between solution and nanoparticles or directly during particle formation by dialysis. Monitoring of pyrene release from nanoparticles suggests that a fraction of this compound was entrapped into the polylactide core whereas the remaining one was located in the polyether rich shell. The release from shells is faster for nanoparticles made from copolymers with carboxyl labels in polyglycidol blocks.

Responsive Vesicles from the Self-Assembly of Crystalline-Coil Polyferrocenylsilane-block-Poly(ethylene Oxide) Star-Block Copolymers

2011 ◽  
Vol 18 (2) ◽  
pp. 517-525 ◽  
Author(s):  
Felix H. Schacher ◽  
Johannes Elbert ◽  
Sanjib K. Patra ◽  
Siti F. Mohd Yusoff ◽  
Mitchell A. Winnik ◽  
...  
Keyword(s):  
Block Copolymers ◽  
Ethylene Oxide ◽  
Self Assembly ◽  
The Self ◽  
Poly Ethylene Oxide ◽  
Star Block Copolymers ◽  
Poly Ethylene

Phosphorescent and semiconductive fiber-like micelles formed by platinum(ii) complexes and block copolymers

2017 ◽  
Vol 5 (47) ◽  
pp. 12500-12506 ◽  
Author(s):  
Linlin Hu ◽  
Fang Qu ◽  
Yongyue Wang ◽  
Junfang Shen ◽  
Qun He ◽  
...  
Keyword(s):  
Block Copolymers ◽  
Ethylene Oxide ◽  
Self Assembly ◽  
Ionic Core ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene

The electrostatic self-assembly of cationic platinum(ii) complexes with negatively charged block copolymers in water leads to the formation of fiber-like micelles with a platinum(ii)-based ionic core surrounded by a poly(ethylene oxide) corona, which exhibit intense phosphorescent emissions and appreciable conductivity.

Synthesis and self-assembly of water-soluble polythiophene-graft-poly(ethylene oxide) copolymers

RSC Advances ◽  
2014 ◽  
Vol 4 (42) ◽  
pp. 21830-21839 ◽  
Author(s):  
Mohamed Gamal Mohamed ◽  
Chih-Chia Cheng ◽  
Yung-Chih Lin ◽  
Cheng-Wei Huang ◽  
Fang-Hsien Lu ◽  
...  
Keyword(s):  
Ethylene Oxide ◽  
Click Chemistry ◽  
Self Assembly ◽  
Oxidative Polymerization ◽  
Water Soluble ◽  
Random Copolymers ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene

Poly(3-hexylthiophene)-graft-poly(ethylene oxide) (P3HT-g-PEO) rod–coil conjugated random copolymers through oxidative polymerization with FeCl3 and facile click chemistry.

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