Effect of beta-cyclodextrin on the photoinduced charge transfer in sodium 1-anilino-8-naphthalene sulfate (ANS)/CdS colloidal system

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	Effect of beta-cyclodextrin on the photoinduced charge transfer in sodium 1-anilino-8-naphthalene sulfate (ANS)/CdS colloidal system
	Yang, JL ; Xiang, JF ; Chen, CP ; Lu, DH ; Xu, GZ
刊名	JOURNAL OF COLLOID AND INTERFACE SCIENCE
	2001-08-15
卷号	240 期号:2 页码:425-431
关键词	Ans Semiconductor Beta-cyclodextrin Charge Transfer
ISSN号	0021-9797
英文摘要	The S-center radical (ANS(.)) of sodium 1-anilino-8-naphthalene sulfate (ANS) generated by photoinduced charge transfer in ANS/CdS and ANS/CdS/beta -cyclodextrin(beta -CD) systems has been studied by using spin trapping electron spin resonance techniques, UV-visible spectroscopic methods, and fluorescence spectroscopic methods. It was found that the S-centered radical (ANS(.)) was produced by the charge transfer reaction between the ground state ANS and the positive hole h(+)(CdS) from the valence band of CdS colloids, by the charge transfer from the excited singlet state (1)ANS* to the conduction band of CdS colloids, or by both in the ANS/CdS and ANS/CdS/beta -CD systems. The ESR signal intensity of the spin adduct (5,5 ' -dimethyl-1-pyrroline-N-oxide (DMPO)-ANS)(.), which is formed from ANS(.) trapped by DMPO, in the latter system is 15 times stronger than that in the former system. The apparent association constants between ANS and CdS colloids in the absence and presence of P-CD determined from fluorescence quenching experiments are 1097 and 1606 M-1, respectively. From ESR and fluorescence results, it is estimated that the efficiency of photoinduced charge transfer from ANS to CdS colloids in the ANS/CdS/beta -CD system is 12.5 times that in the ANS/CdS system. (C) 2001 Academic Press.
语种	英语
出版者	ACADEMIC PRESS INC
WOS记录号	WOS:000170513300007
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/76979]
专题	中国科学院化学研究所
通讯作者	Xu, GZ
作者单位	1.Chinese Acad Sci, Inst Chem, Ctr Mol Sci, State Key Lab Struct Chem Unstable & Stable Speci, Beijing 100080, Peoples R China 2.Chinese Acad Sci, Tech Inst Phys & Chem, Beijing 100101, Peoples R China
推荐引用方式 GB/T 7714	Yang, JL,Xiang, JF,Chen, CP,et al. Effect of beta-cyclodextrin on the photoinduced charge transfer in sodium 1-anilino-8-naphthalene sulfate (ANS)/CdS colloidal system[J]. JOURNAL OF COLLOID AND INTERFACE SCIENCE,2001,240(2):425-431.
APA	Yang, JL,Xiang, JF,Chen, CP,Lu, DH,&Xu, GZ.(2001).Effect of beta-cyclodextrin on the photoinduced charge transfer in sodium 1-anilino-8-naphthalene sulfate (ANS)/CdS colloidal system.JOURNAL OF COLLOID AND INTERFACE SCIENCE,240(2),425-431.
MLA	Yang, JL,et al."Effect of beta-cyclodextrin on the photoinduced charge transfer in sodium 1-anilino-8-naphthalene sulfate (ANS)/CdS colloidal system".JOURNAL OF COLLOID AND INTERFACE SCIENCE 240.2(2001):425-431.