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Investigation of energy transfer from pyrromethene dye to cresyl violet 670 in ethanol |
Li Xiao-Hui (李晓晖)a b, Fan Rong-Wei (樊荣伟)a b, Yu Xin (于欣)a b, Chen De-Ying (陈德应)a b |
a National Key Laboratory of Science and Technology on Tunable Laser, Harbin Institute of Technology, Harbin 150080, China;
b Institute of Opto-electronics, Harbin Institute of Technology, Harbin 150080, China |
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Abstract In this paper, radiative and nonradiative energy transfer from laser dye pyrromethene 567 (PM567) and pyrromethene 580 (PM580) as donors to cresyl violet 670 (CV670) as acceptor in ethanol are investigated by using the steady-state emission measurement and the second harmonic generation (532 nm, ~ 13 ns) of a Q-switched Nd:YAG laser as the pumping source. The fluorescence intensity of the acceptor is improved due to the introduction of the donors, and the largest enhancement is obtained to be 128% in the PM567:CV670 dye mixture system. Energy transfer parameters, including the radiative and nonradiative energy transfer rate constants (KR and KNR), critical distance (R0), and half quenching concentration ([A]1/2) are investigated using the Stern–Volmer plots, and the acceptor concentration dependencies of radiative and nonradiative transfer efficiencies are also obtained. The values of KR for PM567:CV670 and PM580:CV670 systems are 2032.0×109 L·mol-1·s-1 and 2790.4×109 L·mol-1·s-1, respectively, and the values of corresponding KNR are 3.3×109 L·mol-1·s-1 and 4.2×109 L·mol-1·s-1, respectively. The results indicate that the dominant mechanism responsible for the energy transfer in the dye mixture systems is of the radiative type.
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Received: 27 February 2013
Revised: 21 May 2013
Accepted manuscript online:
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PACS:
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34.50.Ez
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(Rotational and vibrational energy transfer)
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33.50.-j
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(Fluorescence and phosphorescence; radiationless transitions, quenching (intersystem crossing, internal conversion))
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42.55.Mv
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(Dye lasers)
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Fund: Project supported by the National Natural Science Foundation of China (Grant No. 61275127). |
Corresponding Authors:
Li Xiao-Hui, Chen De-Ying
E-mail: lixiaohuihit@163.com;dychen@hit.edu.cn
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Cite this article:
Li Xiao-Hui (李晓晖), Fan Rong-Wei (樊荣伟), Yu Xin (于欣), Chen De-Ying (陈德应) Investigation of energy transfer from pyrromethene dye to cresyl violet 670 in ethanol 2013 Chin. Phys. B 22 123402
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