Sol–Gel Transition during Inclusion Complex Formation between α-Cyclodextrin and High Molecular Weight Poly(ethylene glycol)s in Aqueous Solution

ABSTRACTFormation of hierarchical macropores and mesopores in ethylene-bridged polysilsesquioxane sol-gel systems via concurrent sol-gel transition and phase separation induced by the incorporation of supramolecular templats has been investigated. A series of poly(ethylene-glycol)-poly(propyleneglycol)- poly(ethyleneglycol) triblock copolymers, EOPOEOs, have been employed as supramolecular templates, while 1,2-bis(trimethoxysilyl)ethane was used as a polysilsesquioxane source. Successful combination of templated mesopores and well-defined macropores due to phase-separation has been found in the system with EOPOEOs having 70 PO units and respective 20 EO units. Although similar macroporous morphology has been obtained for all the EOPOEOs with EO chain longer or shorter than 20 units, the optimum composition for the co-continuous macropores and that for templated mesopores deviated from each other, resulting in the failure of producing hierarchical macropores and mesopores.

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Molecular captain: A light-sensitive linker molecule in poly(ethylene glycol)-poly(L-alanine)-poly(ethylene glycol) triblock copolymer directs molecular nano-assembly, conformation, and sol-gel transition

Journal of Polymer Science Part A Polymer Chemistry ◽

10.1002/pola.26104 ◽

2012 ◽

Vol 50 (15) ◽

pp. 3184-3191 ◽

Cited By ~ 12

Author(s):

So Young Jeong ◽

Hyo Jung Moon ◽

Min Hee Park ◽

Min Kyung Joo ◽

Byeongmoon Jeong

Keyword(s):

Ethylene Glycol ◽

Triblock Copolymer ◽

Sol Gel ◽

Poly Ethylene Glycol ◽

Sol Gel Transition ◽

Poly Ethylene ◽

Gel Transition

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Tuning of Sol-Gel Transition in the Mixed Polymer Micelle Solutions of Copolymer Mixtures Consisting of Enantiomeric Diblock and Triblock Copolymers of Polylactide and Poly(ethylene glycol)

Macromolecular Chemistry and Physics ◽

10.1002/macp.201400581 ◽

2015 ◽

Vol 216 (8) ◽

pp. 837-846 ◽

Cited By ~ 7

Author(s):

Yu-I. Hsu ◽

Kazunari Masutani ◽

Tetsuji Yamaoka ◽

Yoshiharu Kimura

Keyword(s):

Ethylene Glycol ◽

Triblock Copolymers ◽

Sol Gel ◽

Polymer Micelle ◽

Poly Ethylene Glycol ◽

Sol Gel Transition ◽

Poly Ethylene ◽

Gel Transition

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Biomolecularly stimuli-responsive tetra-poly(ethylene glycol) that undergoes sol–gel transition in response to a target biomolecule

Polymer Chemistry ◽

10.1039/c7py01370a ◽

2017 ◽

Vol 8 (41) ◽

pp. 6378-6385 ◽

Cited By ~ 2

Author(s):

Chisa Norioka ◽

Kazuma Okita ◽

Miho Mukada ◽

Akifumi Kawamura ◽

Takashi Miyata

Keyword(s):

Phase Transition ◽

Ethylene Glycol ◽

Sol Gel ◽

Stimuli Responsive ◽

Poly Ethylene Glycol ◽

Stimuli Responsive Polymers ◽

Responsive Polymers ◽

Sol Gel Transition ◽

Poly Ethylene ◽

Gel Transition

We designed biotin-conjugated four-armed poly(ethylene glycol) (biotinylated Tetra-PEG) as biomolecularly stimuli-responsive polymers that underwent the phase transition from a sol to a gel state in response to avidin as a target biomolecule.

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Sol–gel transition and phase separation in ternary system of gelatin-water–poly(ethylene glycol) oligomer

Journal of Molecular Liquids ◽

10.1016/j.molliq.2014.03.016 ◽

2014 ◽

Vol 200 ◽

pp. 47-51 ◽

Cited By ~ 10

Author(s):

Yutaro Yamashita ◽

Miho Yanagisawa ◽

Masayuki Tokita

Keyword(s):

Phase Separation ◽

Ternary System ◽

Ethylene Glycol ◽

Sol Gel ◽

Poly Ethylene Glycol ◽

Sol Gel Transition ◽

Poly Ethylene ◽

Gel Transition

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Application of Thermosensitive Peptide Copolymer Gels to Removal of Endocrine Disruptor

Research Letters in Materials Science ◽

10.1155/2009/597308 ◽

2009 ◽

Vol 2009 ◽

pp. 1-4 ◽

Cited By ~ 2

Author(s):

Satoshi Tanimoto ◽

Naoto Yagi ◽

Hitoshi Yamaoka

Keyword(s):

Bisphenol A ◽

Ring Opening ◽

Endocrine Disruptor ◽

Sol Gel ◽

Chloroform Solution ◽

Poly Ethylene Glycol ◽

Sol Gel Transition ◽

Poly Ethylene ◽

Peptide Segments ◽

Gel Transition

Poly(L-leucine)-block-poly(ethylene glycol)-block-poly(L-leucine) triblock copolymers were synthesized by a ring-opening polymerization ofα-amino acid N-carboxyanhydride with amino-terminated PEG as an initiator. The chloroform solution of these peptide copolymers showed a thermo-sensitive sol-gel transition. The transition temperature varied as a function of the length of peptide segments. Additionally, we used these peptide copolymers to remove an endocrine disruptor such as bisphenol A from its aqueous solution. As a result, it became clear that the peptide copolymer gel used in this study could capture bisphenol A efficiently.

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‘Reverse’ Hofmeister effects on the sol–gel transition rates for an α-helical peptide–PEG bioconjugate

Physical Chemistry Chemical Physics ◽

10.1039/c8cp03316a ◽

2018 ◽

Vol 20 (30) ◽

pp. 20287-20295 ◽

Cited By ~ 1

Author(s):

Sean C. O’Neill ◽

Ankit D. Kanthe ◽

Jacob A. Weber ◽

Raymond S. Tu

Keyword(s):

Ethylene Glycol ◽

Sol Gel ◽

Transition Rates ◽

Poly Ethylene Glycol ◽

Helical Peptide ◽

Aqueous Environments ◽

Sol Gel Transition ◽

Poly Ethylene ◽

Gel Transition

We examine the dynamics of the sol–gel transition for end-functionalized linear- and 4-arm-peptides bioconjugated to poly-ethylene glycol (PEG) in aqueous environments with increasingly chaotropic (Cl− < Br− < I−) anions.

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