A new oxidation state of aniline pentamer observed in water-soluble electroactive oligoaniline-chitosan polymer

doi:10.1002/pola.22454

CORC > 化学研究所 > 中国科学院化学研究所

	A new oxidation state of aniline pentamer observed in water-soluble electroactive oligoaniline-chitosan polymer
	Hu, Jun 1,2; Huang, Lihong 1,2; Zhuang, Xiuli 1; Chen, Xuesi 1; Wei, Yen 1,3; Jing, Xiabin 1
刊名	JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY
	2008-02-01
卷号	46 期号:3 页码:1124-1135
关键词	Chitosan Crosslinking Electroactive Oligomers
ISSN号	0887-624X
DOI	10.1002/pola.22454
英文摘要	A novel water-soluble electroactive polymer, aniline pentamer crosslinked chitosan (Pentamer-c-Chi), was prepared by condensation polymerization of the terminal carboxyl groups in aniline pentamer with the amino side groups in chitosan in aqueous solution. The carboxyl groups were activated by N-hydroxysuccinimide (NHS) and N,N'-dicyclohexylcarbodiimide (I)CC). The electrochemical behavior of aniline pentamer in this kind of crosslinked polymer was studied in acidic aqueous solution by means of cyclic voltammetry (CV), UV-vis, and electron spin resonance (ESR) spectroscopy. There were three reversible redox peaks in the CV of Pentamer-c-Chi. A new emeraldine oxidization state in the form of radical cations was proposed, which was associated with the new absorption band at 370 nm in the UV-Vis spectra. The ESR of the aqueous solution of Pentamer-c-Chi showed a single Lorentzian shaped signal, which suggested the existence of radical cations. The new redox state was pH dependent and appeared only at pH < 3. The stability of radical cations could be attributed to the hydrogen bonds between radical cations, water, and chitosan. Morphological structure of the Pentamer-c-Chi can be adjusted by varying the content of aniline pentamer. (c) 2007 Wiley Periodicals, Inc.
语种	英语
出版者	JOHN WILEY & SONS INC
WOS记录号	WOS:000252905800033
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/63525]
专题	中国科学院化学研究所
通讯作者	Chen, Xuesi
作者单位	1.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China 3.Drexel Univ, Dept Chem, Philadelphia, PA 19104 USA
推荐引用方式 GB/T 7714	Hu, Jun,Huang, Lihong,Zhuang, Xiuli,et al. A new oxidation state of aniline pentamer observed in water-soluble electroactive oligoaniline-chitosan polymer[J]. JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY,2008,46(3):1124-1135.
APA	Hu, Jun,Huang, Lihong,Zhuang, Xiuli,Chen, Xuesi,Wei, Yen,&Jing, Xiabin.(2008).A new oxidation state of aniline pentamer observed in water-soluble electroactive oligoaniline-chitosan polymer.JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY,46(3),1124-1135.
MLA	Hu, Jun,et al."A new oxidation state of aniline pentamer observed in water-soluble electroactive oligoaniline-chitosan polymer".JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY 46.3(2008):1124-1135.