Photo-induced interfacial electron transfer from CdSe quantum dots to surface-bound p-benzoquinone and anthraquinone

被引：7

作者：

Long, Dewu ^{[1
]}

Wu, Guozhong ^{[1
]}

Wang, Wenfeng ^{[1
]}

Yao, Side ^{[1
]}

机构：

[1] Chinese Acad Sci, Shanghai Inst Appl Phys, Dept Nucl Anal, Shanghai 201800, Peoples R China

来源：

RESEARCH ON CHEMICAL INTERMEDIATES | 2007年 / 33卷 / 07期

基金：

中国国家自然科学基金;

关键词：

spectral shift; p-benzoquinone; anthraquinone; quantum dots; absorption enhancement;

D O I：

10.1163/156856707781749937

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Here we report transient spectral red-shift and transient absorption enhancement of p-benzoquinone radical in the presence of CdSe quantum dots after 355 nm pulse laser excitation. The spectral shift was caused by surface-bound p-benzoquinone molecules while the transient absorption increase was due to interfacial electron transfer from CdSe quantum dots to p-benzoquinone molecules. In contrast, spectral shift and absorption increase were much less significant for anthraquinone in the presence of CdSe quantum dots due to their weak adsorption abilities.

引用

页码：655 / 661

页数：7