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.

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

Cleavage of polystyrene-b -poly(ethylene oxide) block copolymers with a trithiocarbonate linkage in solutions

2010 ◽  
Vol 48 (17) ◽  
pp. 3834-3840 ◽  
Author(s):  
Min Cao ◽  
Jian-Qi Wang ◽  
Peng-Cheng Chen ◽  
Jun-Ting Xu ◽  
Zhi-Qiang Fan
Keyword(s):  
Block Copolymers ◽  
Ethylene Oxide ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene

Synthesis and properties of semifluorinated block copolymers containing poly(ethylene oxide) and poly(fluorooctyl methacrylates) via atom transfer radical polymerisation

Polymer ◽  
2002 ◽  
Vol 43 (25) ◽  
pp. 7043-7049 ◽  
Author(s):  
Kwon Taek Lim ◽  
Min Young Lee ◽  
Myung Jun Moon ◽  
Gun Dae Lee ◽  
Seong-Soo Hong ◽  
...  
Keyword(s):  
Block Copolymers ◽  
Ethylene Oxide ◽  
Atom Transfer ◽  
Radical Polymerisation ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene
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