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Glucose‐ Responsive Actuators Based on Bigel Strip from Host‐Guest Assembly Between a β‐Cyclodextrin‐Based Host Gel and a Ferrocene‐Based Guest Gel
Author(s) -
Tong Rongbai,
Yu Haojie,
Wang Li
Publication year - 2020
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.202000640
Subject(s) - ferrocene , moiety , cyclodextrin , bending , polyacrylamide , actuator , materials science , host (biology) , polymer chemistry , chemistry , combinatorial chemistry , biophysics , chemical engineering , nanotechnology , organic chemistry , composite material , electrode , computer science , electrochemistry , artificial intelligence , engineering , biology , ecology
A novel system with 3‐acrylamidophenylboronic acid (AAPBA) as a glucose‐sensing moiety in the glucose‐responsive bigel actuator was developed. The strategy was based on the integration of ferrocene (Fc) and β‐cyclodextrin (β‐CD) moieties in the host and guest gels to form new bigel actuators which can be used to develop switches, artificial muscles, and remote controls. This work illustrates the formation of a bigel strip using the polyacrylamide‐based hydrogel functionalized with ferrocene (PAM−Fc) as the guest gel, and polyacrylamide‐based hydrogel functionalized with AAPBA and β‐CD (AAPBA‐CD) as the host gel. The resultant bigel exhibited glucose‐responsive bending properties due to the differences in the glucose sensitivity of the two stripes. It was observed that the variations in the p H induce reversible bending and straightening transition in a bigel strip. Furthermore, the optimization of the crosslinking density and the concentration of glucose provided fast bending ability and a large bending degree, which can be applied to develop a glucose‐sensitive switch for glucose detection sensors.