ICCAS OpenIR
Photoinduced interaction between fluorescein ester derivatives and CdS colloid
Zhang, HP; Zhou, YL; Zhang, MH; Shen, T; Li, YL; Zhu, DB
2003-08-01
Source PublicationJOURNAL OF COLLOID AND INTERFACE SCIENCE
ISSN0021-9797
Volume264Issue:1Pages:290-295
AbstractThe photoinduced interaction of fluorescein ester derivatives, fluorescein's butyl ester (FL4) and fluorescein's anthraquinone-methyl ester (FL-AQ), and colloidal US was examined by absorption, fluorescence spectroscopy, and photoinduced ESR spectroscopy. It is found that FL4 and FL-AQ molecules are adsorbed on the surfaces of US colloid by an electrostatic interaction forming the surface complex of the type CdS-FL4 or CdS-FL-AQ. The apparent association constant (K-app) and the degree of association (alpha) of CdS-FL4 obtained from absorption spectra are 2.25 x 10(4) M-1 and 0.78, respectively. The values of K-app and alpha of CdS-FL4 as determined from fluorescence spectra are 1.54 x 10(4) M-1 and 0.82, respectively, which matches well with that determined from the absorption spectra changes. And the values of Kapp and alpha of CdS-FL-AQ obtained from absorption spectra are 4.18 x 10(4) M-1 and 0.83, respectively. These data indicate that there is a strong interaction between the dye and the US particle surface. But there was no evidence for interfacial electron transfer from FL4 or FL-AQ to colloidal US by photoinduced ESR experiments. The fluorescence quenching is due to the formation of a nonfluorescent complex. The related phenomena are discussed in this paper. (C) 2003 Elsevier Inc. All rights reserved.
KeywordFluorescein Ester Derivatives Colloidal Cds Fluorescence Quenching Nonfluorescent Complex
DOI10.1016/S0021-9797(03)00372-2
Indexed BySCI
Language英语
WOS IDWOS:000184526200037
PublisherACADEMIC PRESS INC ELSEVIER SCIENCE
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Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/79942
Collection中国科学院化学研究所
Corresponding AuthorShen, T
AffiliationChinese Acad Sci, Inst Chem, Mol Sci Ctr, Beijing 100080, Peoples R China
Recommended Citation
GB/T 7714
Zhang, HP,Zhou, YL,Zhang, MH,et al. Photoinduced interaction between fluorescein ester derivatives and CdS colloid[J]. JOURNAL OF COLLOID AND INTERFACE SCIENCE,2003,264(1):290-295.
APA Zhang, HP,Zhou, YL,Zhang, MH,Shen, T,Li, YL,&Zhu, DB.(2003).Photoinduced interaction between fluorescein ester derivatives and CdS colloid.JOURNAL OF COLLOID AND INTERFACE SCIENCE,264(1),290-295.
MLA Zhang, HP,et al."Photoinduced interaction between fluorescein ester derivatives and CdS colloid".JOURNAL OF COLLOID AND INTERFACE SCIENCE 264.1(2003):290-295.
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