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제112회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Chitosan based redox polymers for electrochemical sensing platform

2013년 8월 27일 14시 50분 50초
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금 11시 : 30분
전기화학 - Young Electrochemists Symposium
저자 및
Harishchandra D. Jirimali, 신운섭1,*
서강대학교 화학과/바이오융합협동과정, India
1서강대학교 화학과, Korea
Chitosan is a bio-polymer obtained from the partial deacetylation of the chitin which is major component of the shells of the crustaceans like crabs, shrimps. Chitosan possess plenty of free amine and hydroxyl groups which can be used for immobilization of redox moieties. Chitosan crosslinked osmium polymer (PVP-Os) via glutaraldehyde is prepared and used for the electrode modification. Chitosan-PVP-Os film electrode shows enhanced electrochemical properties. Enzyme immobilized in the chitosan / PVP-OS composite shows enhanced catalytic performance for the glucose sensing. Hydroquinone derivatives linked to free amine of chitosan are synthesized and its nanocomposite with the carbon nanoparticles is prepared. The nanocomposite modified electrode shows selective ascorbic acid detection at lower overpotential. The catechol link chitosan composite shows the NADH detection at lower overpotential with high sensitivity. Metal salen complexes of the Fe, Cu and Ni were linked to chitosan and their composites modified electrode shows hydrogen peroxide sensing. Simple methods of preparations, formation of stable nanocomposite film makes chitosan as an important polymeric biosensing platform.
[1] Harishchandra Digambar Jirimali, Rajaram Krishna Nagarale, Durai Saravanakumar, Jong Myung Lee, Woonsup Shin. Carbohydrate Polymers 2013, 92, 641?644.
[2] Harishchandra Digambar Jirimali, Rajaram Krishna Nagarale, Jong Myung Lee, Durai Saravanakumar, Woonsup Shin. ChemPhysChem 2013, 14, 2232-2236.