中国物理B ›› 2021, Vol. 30 ›› Issue (2): 27802-0.doi: 10.1088/1674-1056/abb802

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  • 收稿日期:2020-08-06 修回日期:2020-09-02 接受日期:2020-09-14 出版日期:2021-01-18 发布日期:2021-01-29

Investigation of fluorescence resonance energy transfer ultrafast dynamics in electrostatically repulsed and attracted exciton-plasmon systems

Hong-Yu Tu(屠宏宇)1, Ji-Chao Cheng(程基超)1, Gen-Cai Pan(潘根才)1, Lu Han(韩露)1, Bin Duan(段彬)1, Hai-Yu Wang(王海宇)2, Qi-Dai Chen(陈岐岱)2, Shu-Ping Xu(徐抒平)3, Zhen-Wen Dai(戴振文)1, and Ling-Yun Pan(潘凌云)1,†   

  1. 1 State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun 130012, China; 2 State Key Laboratory on Integrated Optoelectronics, College of Electronics, Science and Engineering, Jilin University, Changchun 130012, China; 3 State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun 130012, China
  • Received:2020-08-06 Revised:2020-09-02 Accepted:2020-09-14 Online:2021-01-18 Published:2021-01-29
  • Contact: †Corresponding author. E-mail: ply@jlu.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 10904049 and 61575079), the Science and Technology Development Program of Jilin Province, China (Grant No. 20180101230JC), the Fundamental Research Funds for the Central Universities (Grant No. JCKYQKJC45), China Postdoctoral Science Foundation (Grant No. 201003537), and the Scientific Research Foundation for the Returned Overseas Chinese Scholars, the Ministry of Education, China.

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Abstract: Following the gradual maturation of synthetic techniques for nanomaterials, exciton-plasmon composites have become a research hot-spot due to their controllable energy transfer through electromagnetic fields on the nanoscale. However, most reports ignore fluorescence resonance energy transfer (FRET) under electrostatic repulsion conditions. In this study, the FRET process is investigated in both electrostatic attraction and electrostatic repulsion systems. By changing the Au:quantum dot ratio, local-field induced FRET can be observed with a lifetime of ns and a fast component of hundreds of ps. These results indicate that the intrinsic transfer process can only elucidated by considering both steady and transient state information.

Key words: fluorescence resonance energy transfer (FRET), quantum dots, excitons-plasmon composites

中图分类号:  (Quantum dots)

  • 78.67.Hc
33.20.-t (Molecular spectra)