Premium
Redox‐active LBL films via in situ template polymerization of hydroquinone
Author(s) -
He Jian,
Guan Ying,
Zhang Yongjun
Publication year - 2013
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.39043
Subject(s) - hydroquinone , redox , chitosan , materials science , fourier transform infrared spectroscopy , polymerization , chemical engineering , amperometry , polymer chemistry , biosensor , electrochemistry , electrode , chemistry , polymer , nanotechnology , organic chemistry , composite material , engineering , metallurgy
New redox‐active hydrogel thin films with poly(hydroquinone) (PHQ) as polymeric redox couple and chitosan hydrogel as matrix are synthesized. Single‐component layer‐by‐layer films of chitosan are first fabricated in a uniform and reproducible manner, which is proved by UV and AFM studies. The chitosan films are then treated in acidic hydroquinone (HQ) solution to introduce PHQ. In situ generation of PHQ in the films is proved by UV and FTIR spectroscopy. PHQ formation also results in an increased film roughness and thickness. We confirmed that oxygen acts as oxidant and chitosan acts as template in the polymerization of HQ. Cyclic voltammogram of the film presents two oxidation peaks at 0.21 and 0.75 V and one reduction peak at −0.15 V(vs Ag/AgCl), indicating the film, which is originally not redox‐active, becomes redox‐active after the introduction of PHQ. The new redox‐active films may find applications in amperometric biosensors. © 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013