Photoinduced Charge Separation and Recombination Processes in CdSe Quantum Dot and Graphene Oxide Composites with Methylene Blue as Linker

	Photoinduced Charge Separation and Recombination Processes in CdSe Quantum Dot and Graphene Oxide Composites with Methylene Blue as Linker
	Jing P. T.; Ji W. Y.; Yuan X.; Ikezawa M.; Zhang L. G.; Li H. B.; Zhao J. L.; Masumoto Y.
	2013
发表期刊	Journal of Physical Chemistry Letters
ISSN	ISBN/1948-7185
卷号	4 期号:17
摘要	The charge separation and recombination processes between CdSe quantum dot (QD) and graphene oxide (GO) composites with linking molecule methylene blue (MB+) were studied by femtosecond transient absorption spectroscopy. Anchoring MB+ molecules on GO results in significant changes in steady-state and transient absorption spectra, where the exciton dissociation time in the CdSe QD-MB+-GO composite was determined to be 1.8 ps. Surprisingly, the ground state bleaching signal increased for MB+-GO complex was found to be 5.2 ps, in relation with electron transfer from QD to GO. On the other hand, the strong electronic coupling between MB center dot-GO radical and GO prolonged charge recombination process (>= 5 ns) in QD-MB+-GO composites. Charge separation and recombination processes at the interface between semiconductor QDs and graphene can thus be modulated by the functionalized dye molecules.
收录类别	SCI
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/40810
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Jing P. T.,Ji W. Y.,Yuan X.,et al. Photoinduced Charge Separation and Recombination Processes in CdSe Quantum Dot and Graphene Oxide Composites with Methylene Blue as Linker[J]. Journal of Physical Chemistry Letters,2013,4(17).
APA	Jing P. T..,Ji W. Y..,Yuan X..,Ikezawa M..,Zhang L. G..,...&Masumoto Y..(2013).Photoinduced Charge Separation and Recombination Processes in CdSe Quantum Dot and Graphene Oxide Composites with Methylene Blue as Linker.Journal of Physical Chemistry Letters,4(17).
MLA	Jing P. T.,et al."Photoinduced Charge Separation and Recombination Processes in CdSe Quantum Dot and Graphene Oxide Composites with Methylene Blue as Linker".Journal of Physical Chemistry Letters 4.17(2013).

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