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Updated: May 11, 2026
Bridging the Bio-Electronic Interface with Biofabrication
Published on: June 6, 2012
Chitosan-cross-linked osmium polymer composites as an efficient platform for electrochemical biosensors
Harishchandra Digambar Jirimali1, Rajaram Krishna Nagarale, Jong Myung Lee
1Department of Chemistry and Interdisciplinary Program of Integrated Biotechnology, Sogang University, Seoul 121-742, Republic of Korea.
Abstract:
A new family of chitosan-cross-linked osmium polymer composites was prepared and its electrochemical properties were examined. The composites were prepared by quaternization of the poly(4-vinylpyridine) osmium bipyridyl polymer (PVP-Os) which was then cross-linked with chitosan, yielding PVP-Os/chitosan. Films made of the composites showed improved mass and electron transport owing to the porous and hydrophilic structure which is derived from the cross-links between the Os polymer and chitosan. The rate for glucose oxidation was enhanced four times when glucose oxidase (GOx) was immobilized on PVP-Os/chitosan compared immobilization on PVP-Os.
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