Premium
Responsive Polypseudorotaxane Hydrogels Triggered by a Compatible Stimulus of CO 2
Author(s) -
Yan Diwei,
Liu Sa,
Jia YongGuang,
Mo Lina,
Qi Dawei,
Wang Jin,
Chen Yunhua,
Ren Li
Publication year - 2019
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.201900071
Subject(s) - self healing hydrogels , isothermal titration calorimetry , ethylene glycol , supramolecular chemistry , peg ratio , chemistry , chemical engineering , materials science , polymer chemistry , molecule , nanotechnology , organic chemistry , finance , engineering , economics
Realizing the reversible transformation of the supramolecular hydrogels is essential for their application as smart materials. The reversible sol‐gel transition of the polypseudorotaxane (PPR) hydrogels is achieved through adding a CO 2 ‐switchable guest molecule into the PPR hydrogel of poly(ethylene glycol) (PEG) and α‐cyclodextrins (α‐CDs). Alternating treatments with CO 2 and heating drive such reversible transition due to the competitive complexation as evidenced by 2D NOESY 1 H NMR and isothermal titration calorimetry as well as X‐ray diffraction. The present work describes a straightforward way to obtain switchable PPR hydrogels triggered by a compatible stimulus of CO 2 . These stimuli‐responsive PPR hydrogels have potential applications as biomaterials.
Accelerating Research
Robert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom
Address
John Eccles HouseRobert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom