Quantum dots acting as energy acceptors with organic dyes as donors in solution.
Quantum dots acting as energy acceptors with organic dyes as donors in solution.
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DOI：
10.1002/cphc.201000287
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发表时间：
2010-10
期刊：
影响因子：
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通讯作者：
Hu Xu;Xiaomei Huang;Wenjin Zhang;Guanjiao Chen;Weihong Zhu;X. Zhong
中科院分区：
文献类型：
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作者：
Hu Xu;Xiaomei Huang;Wenjin Zhang;Guanjiao Chen;Weihong Zhu;X. Zhong
量子点在Förster共振能量转移（FRET）中通常作为能量供体应用于许多领域。我们首次报道了在溶液中（1）-QDs杂化体系中，从传统的萘酰亚胺发色团1到CdSe/ZnS核/壳QDs（作为能量受体）的FRET过程。该FRET过程由各种光谱学支持，例如稳态和时间分辨光致发光（PL）以及PL激发光谱。最高能量传递效率估计为约0.37。有趣的是，量子点在FRET中的作用可以通过使用具有更大带隙的量子点来特异性地逆转（从能量受体到能量供体）。
Quantum dots (QDs) usually act as energy donors in Förster resonant energy transfer (FRET) in various application fields. We report, for the first time, a FRET process from a conventional naphthalimide chromophore 1 to CdSe/ZnS core/shell QDs (acting as energy acceptors) in (1)-QDs hybrid system in solution. This FRET process is supported by various spectroscopies, such as steady-state and time-resolved photoluminescence (PL) as well as PL excitation spectra. The highest energy transfer efficiency is estimated to be about 0.37. Interestingly, the role of QDs in FRET can be specifically reversed (from energy acceptors to energy donors) with the use of QDs with larger band-gaps.