TY - JOUR
T1 - A Multiresponsive Hydrophobic Associating Hydrogel Based on Azobenzene and Spiropyran
AU - Liu, Anqi
AU - Xiong, Chenxiao
AU - Ma, Xiaoying
AU - Ma, Wenjing
AU - Sun, Ruyi
N1 - Publisher Copyright:
© 2019 SIOC, CAS, Shanghai, & WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
PY - 2019/8/1
Y1 - 2019/8/1
N2 - Stimuli-responsive hydrogels crosslinked by weak noncovalent bonds such as hydrogen bonds, ionic interactions, host-guest interactions and hydrophobic interactions have been extensively investigated. Herein, azobenzene and spiropyran acting as two hydrophobic pendant groups were introduced into a hydrophilic polyacrylamide (PAM) via free radical copolymerization to construct a hydrophobic interaction based thermo-, light- responsive polymer hydrogel. Its viscosity and color could be reversibly regulated by heating and cooling. Meanwhile, its color could be specifically switched by light without obvious viscosity change. The gel was also capable of being transited to sol by addition of β-cyclodextrin (β-CD), which encaged the hydrophobic groups and then increased the solubility of polymer in water. The hydrogel could be regained after UV irradiation at λ = 365 nm, and after irradiation at λ = 440 nm, the hydrogel changed into a clear sol again.
AB - Stimuli-responsive hydrogels crosslinked by weak noncovalent bonds such as hydrogen bonds, ionic interactions, host-guest interactions and hydrophobic interactions have been extensively investigated. Herein, azobenzene and spiropyran acting as two hydrophobic pendant groups were introduced into a hydrophilic polyacrylamide (PAM) via free radical copolymerization to construct a hydrophobic interaction based thermo-, light- responsive polymer hydrogel. Its viscosity and color could be reversibly regulated by heating and cooling. Meanwhile, its color could be specifically switched by light without obvious viscosity change. The gel was also capable of being transited to sol by addition of β-cyclodextrin (β-CD), which encaged the hydrophobic groups and then increased the solubility of polymer in water. The hydrogel could be regained after UV irradiation at λ = 365 nm, and after irradiation at λ = 440 nm, the hydrogel changed into a clear sol again.
UR - https://www.scopus.com/pages/publications/85068137703
U2 - 10.1002/cjoc.201900106
DO - 10.1002/cjoc.201900106
M3 - 文章
AN - SCOPUS:85068137703
SN - 1001-604X
VL - 37
SP - 793
EP - 798
JO - Chinese Journal of Chemistry
JF - Chinese Journal of Chemistry
IS - 8
ER -