Photoinduced Charge Separation and Recombination Processes in CdSe Quantum Dot and Graphene Oxide Composites with Methylene Blue as Linker
文献类型：期刊论文
| 作者 | Jing P. T. ; Ji W. Y. ; Yuan X. ; Ikezawa M. ; Zhang L. G. ; Li H. B. ; Zhao J. L. ; Masumoto Y. |
| 刊名 | Journal of Physical Chemistry Letters
 |
| 出版日期 | 2013 |
| 卷号 | 4期号:17 |
| ISSN号 | ISBN/1948-7185 |
| 英文摘要 | 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 |
| 公开日期 | 2014-05-14 |
| 源URL | [http://ir.ciomp.ac.cn/handle/181722/40810]  |
| 专题 | 长春光学精密机械与物理研究所_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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