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首页> 外文期刊>Journal of Applied Physics >Two-photon-excited fluorescence resonance energy transfer in an aqueous system of CdTe quantum dots and Rhodamine B
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Two-photon-excited fluorescence resonance energy transfer in an aqueous system of CdTe quantum dots and Rhodamine B

机译:CdTe量子点和若丹明B水溶液体系中的双光子激发荧光共振能量转移

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摘要

Two-photon excited fluorescence resonance energy transfer (FRET) between CdTe quantum dots with different emission peaks and Rhodamine B in aqueous solution are investigated both experimentally and theoretically. The photoluminescence and lifetime are measured using a time-resolved fluorescence test system. The two-photon excited FRET efficiency is found to increase as the degree of spectral overlap of the emission spectrum of CdTe and the absorption spectrum of Rhodamine B increases, which is due to the increase of Forster radius of the sample. Moreover, FRET efficiency increases when the ratio of acceptor/donor concentration increases. The two-photon excited FRET efficiency was found to reach 40%.
机译:通过实验和理论研究了具有不同发射峰的CdTe量子点与若丹明B之间的双光子激发荧光共振能量转移(FRET)。使用时间分辨荧光测试系统测量光致发光和寿命。发现随着CdTe发射光谱和若丹明B吸收光谱的光谱重叠程度的增加,双光子激发的FRET效率增加,这是由于样品的福斯特半径增加所致。而且,当受体/供体浓度的比率增加时,FRET效率增加。发现双光子激发的FRET效率达到40%。

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  • 来源
    《Journal of Applied Physics》 |2014年第23期|233106.1-233106.6|共6页
  • 作者单位

    Laboratory of Optical Information and Technology, School of Science, Wuhan Institute of Technology, Wuhan 430073, China, School of Physics, Huazhong University of Science and Technology, Wuhan 430074, China;

    Laboratory of Optical Information and Technology, School of Science, Wuhan Institute of Technology, Wuhan 430073, China;

    Laboratory of Optical Information and Technology, School of Science, Wuhan Institute of Technology, Wuhan 430073, China;

    Wuhan National High Magnetic Field Center, Huazhong University of Science and Technology, Wuhan 430074, China;

    Wuhan National High Magnetic Field Center, Huazhong University of Science and Technology, Wuhan 430074, China;

    Laboratory of Optical Information and Technology, School of Science, Wuhan Institute of Technology, Wuhan 430073, China, School of Physics, Huazhong University of Science and Technology, Wuhan 430074, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
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  • 正文语种 eng
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