Application of Weakly Oriented Non-ionic Liquid Crystal Solvents to NMR Studies of Poly-ethylene Oxide (PEO)

2003 ◽  
Vol 50 (2) ◽  
pp. 201-204 ◽  
Author(s):  
Pin-Hsiu Liu ◽  
Shangwu Ding
Keyword(s):  
Ionic Liquid ◽  
Liquid Crystal ◽  
Ethylene Oxide ◽  
Nmr Studies ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene

Poly(lactic acid)−Poly(ethylene oxide) (PLA−PEG) Nanoparticles:  NMR Studies of the Central Solidlike PLA Core and the Liquid PEG Corona

Langmuir ◽  
2002 ◽  
Vol 18 (9) ◽  
pp. 3669-3675 ◽  
Author(s):  
C. R. Heald ◽  
S. Stolnik ◽  
K. S. Kujawinski ◽  
C. De Matteis ◽  
M. C. Garnett ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Ethylene Oxide ◽  
Poly Lactic Acid ◽  
Nmr Studies ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene

Two-dimensional solid-state NMR studies of crystalline poly(ethylene oxide): Conformations and chemical shifts

Polymer ◽  
2005 ◽  
Vol 46 (25) ◽  
pp. 11737-11743 ◽  
Author(s):  
D.J. Harris ◽  
T.J. Bonagamba ◽  
M. Hong ◽  
K. Schmidt-Rohr
Keyword(s):  
Solid State ◽  
Ethylene Oxide ◽  
Solid State Nmr ◽  
Chemical Shifts ◽  
Two Dimensional ◽  
Nmr Studies ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene

Cluster–Micelle Transition of a Thermo- and Photoresponsive ABC Triblock Copolymer in an Ionic Liquid

2019 ◽  
Vol 72 (2) ◽  
pp. 155
Author(s):  
Aya Saruwatari ◽  
Kei Hashimoto ◽  
Ryota Tamate ◽  
Ryoji Usui ◽  
Hisashi Kokubo ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Transition Temperature ◽  
Ethylene Oxide ◽  
Uv Irradiation ◽  
Low Temperatures ◽  
Triblock Copolymer ◽  
Abc Triblock Copolymer ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene ◽  
Azobenzene Groups

We report the photocontrollable micelle–cluster transition of an ABC-type triblock copolymer in an ionic liquid (IL). Polystyrene-b-poly(ethylene oxide)-b-poly(4-phenylazobenzyl acrylamide-r-N-isopropylacrylamide) (PSt-b-PEO-b-P(AzoBnAm-r-NIPAm)) was synthesised, where PSt is IL-phobic, PEO is IL-philic, and P(AzoBnAm-r-NIPAm) is photo- and thermoresponsive in the IL. At high temperatures, the triblock copolymer forms micelles with PSt cores; furthermore, at low temperatures, micelles self-assemble into clusters induced by the aggregation of P(AzoBnAm-r-NIPAm). Under UV irradiation, the micelles form clusters at lower temperatures than that in the dark because of the change in the solubility of P(AzoBnAm-r-NIPAm) induced by photoisomerisation of the azobenzene groups, indicating that this triblock copolymer has a photocontrollable micelle–cluster transition temperature.

Effect of halides on the solvation of poly(ethylene oxide) in the ionic liquid propylammonium nitrate

2019 ◽  
Vol 534 ◽  
pp. 649-654 ◽  
Author(s):  
Ryan Stefanovic ◽  
Zhengfei Chen ◽  
Paul A. FitzGerald ◽  
Gregory G. Warr ◽  
Rob Atkin ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Ethylene Oxide ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene
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