Supramolecular-Structured Hydrogels Showing a Reversible Phase Transition by Inclusion Complexation between Poly(ethylene glycol) Grafted Dextran and α-Cyclodextrin

2001 ◽  
Vol 34 (25) ◽  
pp. 8657-8662 ◽  
Author(s):  
Kang Moo Huh ◽  
Tooru Ooya ◽  
Won Kyu Lee ◽  
Shintaro Sasaki ◽  
Ick Chan Kwon ◽  
...  
Keyword(s):  
Phase Transition ◽  
Ethylene Glycol ◽  
Inclusion Complexation ◽  
Poly Ethylene Glycol ◽  
Reversible Phase Transition ◽  
Poly Ethylene ◽  
Reversible Phase

Protoporphyrin IX copolymer with poly(ethylene glycol) methacrylate and its thermoresponsive properties

2020 ◽  
Vol 98 (9) ◽  
pp. 511-515
Author(s):  
Hu Zhang ◽  
Jair Azael Esquivel Guzman ◽  
Xiantao Feng ◽  
Ernesto Rivera ◽  
Marc Lavertu ◽  
...  
Keyword(s):  
Phase Transition ◽  
Ethylene Glycol ◽  
Protoporphyrin Ix ◽  
Water Soluble ◽  
Solution Temperature ◽  
Poly Ethylene Glycol ◽  
H Nmr ◽  
Reversible Phase Transition ◽  
Methacrylate Monomer ◽  
Poly Ethylene

Porphyrins and their derivatives have been widely used in catalysis, energy conversion, photonics, and biomedicine; however, their use in biological applications is restricted by their limited solubility in aqueous systems. We have prepared a water-soluble copolymer containing moieties of naturally occurring protoporphyrin IX using direct copolymerization of a poly(ethylene glycol) (PEG) methacrylate monomer with protoporphyrin IX via free-radical polymerization. The content of protoporphyrin IX in the copolymer was determined by 1H NMR and UV–vis absorption spectroscopies. Their solution properties and the photostability of the protoporphyrin IX moiety in the copolymer provide direct evidence of the covalent incorporation of protoporphyrin IX within the copolymer. The copolymer showed a reversible phase transition in aqueous solution due to the lower critical solution temperature (LCST). The phase transition temperature varies with the pH of the solutions because of the protonation of the carboxylic acid groups. This copolymer may be useful as an alternative thermoresponsive material for biomedical applications.

scholarly journals Hydrogels assembled by inclusion complexation of poly(ethylene glycol) with alpha-cyclodextrin

2009 ◽  
Vol 4 (5) ◽  
pp. 544-550 ◽  
Author(s):  
Jie Wang ◽  
Li Li ◽  
Yunying Zhu ◽  
Peng Liu ◽  
Xuhong Guo
Keyword(s):  
Ethylene Glycol ◽  
Inclusion Complexation ◽  
Poly Ethylene Glycol ◽  
Poly Ethylene

Phase Transition Behavior, Protein Adsorption, and Cell Adhesion Resistance of Poly(ethylene glycol) Cross-Linked Microgel Particles

2005 ◽  
Vol 6 (4) ◽  
pp. 2032-2039 ◽  
Author(s):  
Christine M. Nolan ◽  
Catherine D. Reyes ◽  
Justin D. Debord ◽  
Andrés J. García ◽  
L. Andrew Lyon
Keyword(s):  
Phase Transition ◽  
Cell Adhesion ◽  
Ethylene Glycol ◽  
Protein Adsorption ◽  
Poly Ethylene Glycol ◽  
Phase Transition Behavior ◽  
Transition Behavior ◽  
Microgel Particles ◽  
Poly Ethylene

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

2017 ◽  
Vol 8 (41) ◽  
pp. 6378-6385 ◽  
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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