ICCAS OpenIR
Photophysical and photochemical events during the photo sensitization of Hypocrellin A on a colloidal CdS semiconductor
Zhou, ZX; Sun, ZY; Zhang, XK; Zhang, ZY
2001-10-01
Source PublicationDYES AND PIGMENTS
ISSN0143-7208
Volume51Issue:1Pages:9-14
AbstractUV-visible spectroscopy, fluorescence quenching measurements, and single-photon counting have been employed to study electron transfer from excited Hypocrellin A (HA) into the conduction band of a colloidal US semiconductor. It has been determined that HA dye adsorbed on colloidal CdS with an apparent association constant of 940 (mol/l)(-1), and fluorescence lifetime measurements gave a rate constant of 5.16 x 10(9) s(-1) for the electron transfer process. The transferred electrons could be used to reduce the substrate 2,2,6,6-tetramethyl-1-piperdinyloxy (TEMPO). In this regard electron paramagnetic resonance spectroscopy was used to study the photoreduction of TEMPO by electrons in the US semiconductor. The results suggested that CdS photoreduction efficiency was enhanced by photosensitization of HA in visible region. (C) 2001 Elsevier Science Ltd. All rights reserved.
KeywordHypocrellin a Cds Colloidal Semiconductor Fluorescence Quenching Fluorescence Lifetime Epr Tempo Electron Transfer
Indexed BySCI
Language英语
WOS IDWOS:000172113400002
PublisherELSEVIER SCI LTD
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/76826
Collection中国科学院化学研究所
Corresponding AuthorZhang, ZY
Affiliation1.Acad Sinica, Inst Biophys, Beijing 100101, Peoples R China
2.Acad Sinica, Inst Chem, Beijing 100080, Peoples R China
Recommended Citation
GB/T 7714
Zhou, ZX,Sun, ZY,Zhang, XK,et al. Photophysical and photochemical events during the photo sensitization of Hypocrellin A on a colloidal CdS semiconductor[J]. DYES AND PIGMENTS,2001,51(1):9-14.
APA Zhou, ZX,Sun, ZY,Zhang, XK,&Zhang, ZY.(2001).Photophysical and photochemical events during the photo sensitization of Hypocrellin A on a colloidal CdS semiconductor.DYES AND PIGMENTS,51(1),9-14.
MLA Zhou, ZX,et al."Photophysical and photochemical events during the photo sensitization of Hypocrellin A on a colloidal CdS semiconductor".DYES AND PIGMENTS 51.1(2001):9-14.
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