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1. 长春理工大学 理学院,吉林 长春,130022
2. 长春理工大学 国际教育与交流学院,吉林 长春,130022
纸质出版日期:2017-8-5,
收稿日期:2017-1-23,
修回日期:2017-2-22,
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翟英歌, 楚学影, 徐铭泽等. ZnS:Cu-罗丹明B的荧光共振能量转移性质[J]. 发光学报, 2017,38(8): 1028-1032
ZHAI Ying-ge, CHU Xue-ying, XU Ming-ze etc. Properties of Fluorescence Resonance Energy Transfer of ZnS:Cu-Rhodamine B[J]. Chinese Journal of Luminescence, 2017,38(8): 1028-1032
翟英歌, 楚学影, 徐铭泽等. ZnS:Cu-罗丹明B的荧光共振能量转移性质[J]. 发光学报, 2017,38(8): 1028-1032 DOI: 10.3788/fgxb20173808.1028.
ZHAI Ying-ge, CHU Xue-ying, XU Ming-ze etc. Properties of Fluorescence Resonance Energy Transfer of ZnS:Cu-Rhodamine B[J]. Chinese Journal of Luminescence, 2017,38(8): 1028-1032 DOI: 10.3788/fgxb20173808.1028.
为了解决现有的基于量子点荧光共振能量转移体系的生物毒性问题,选用无毒的ZnS:Cu量子点与罗丹明B构建新型荧光共振能量转移体系。通过共沉淀法成功制备了形貌均一的ZnS:Cu纳米晶量子点。在此基础上,测试了不同掺杂浓度的ZnS:Cu量子点及罗丹明B的荧光光谱。然后,通过对ZnS:Cu量子点的表面修饰构建了以ZnS:Cu量子点为供体、罗丹明B为受体的荧光共振能量转移体系。实验结果表明:ZnS:2% Cu量子点的发光光谱与罗丹明B的吸收光谱在481 nm处有较大重合,说明构建荧光共振能量转移的最佳铜掺杂摩尔分数为2%。通过计算发现以ZnS:2% Cu量子点为供体、罗丹明B为受体的荧光共振能量转移体系的能量转移效率为25.8%。进一步实验结果表明,罗丹明B浓度也能够影响能量转移。
In order to solve the biological toxicity of fluorescence resonance energy transfer (FRET) system based on quantum dots
non-toxic ZnS:Cu quantum dots and Rhodamine B were chosen to construct FRET system. ZnS:Cu nanocrystalline quantum dots with good morphology were successfully prepared by precipitation method. On this basis
the fluorescence spectra of ZnS:Cu quantum dots with different concentration of copper and fluorescence spectra of Rhodamine B were tested. Then
FRET system with ZnS:Cu quantum dots as donor and Rhodamine B as acceptor was successfully constructed by the surface modification. Experimental results indicate that the emission spectrum of ZnS:2%Cu matches the excitation spectrum of Rhodamine B most in 481 nm. So the optimum copper doping mole fraction for the construction of FRET system is 2%. The energy transfer efficiency of ZnS:Cu quantum dots as donor and Rhodamine B as acceptor is 25.8%. Further experimental results indicate that the concentration of Rhodamine B also can affect the energy transfer.
ZnS:Cu罗丹明B荧光共振能量转移
ZnS:Curhodamine Bfluorescence resonance energy transfer
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