| Efficient two-photon sensitized luminescence of europium （Ⅲ） complex based on hypersensitive transitions |
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| 引用本文： | 史萌,李华,潘梅,苏富芳,马丽丽,韩培高,汪河洲.Efficient two-photon sensitized luminescence of europium （Ⅲ） complex based on hypersensitive transitions[J].Chinese Optics Letters,2011(5):56-58. |
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| 作者姓名： | 史萌 李华 潘梅 苏富芳 马丽丽 韩培高 汪河洲 |
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| 作者单位： | Shandong Provincial Key Laboratory of Laser Polarization and Information Technology,Laser Institute,Qufu Normal University;Xingtan College,Qufu Normal University;School of Chemistry and Chemical Engineering,Sun Yat-Sen University;School of Physics and Engineenng,Sun Yat-Sen University,State Key Laboratory of Optoelectronic Materials and Technologies |
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| 基金项目： | supported by the National Natural Science Foundation of China (No. 20903120);the Project of shandong Provincial Higher Educational Science and Technology Program (No. J10LA10);the Doctoral Research Foundation of Qufu Normal University |
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| 摘 要： | Red frequency-upconversion fluorescence emission is observed in europium(Ⅲ) complex with encapsulating polybenzimidazole tripodal ligands, pumped with 930- and 1070-nm picosecond laser pulses. The lumines- cence of transition 5D0 →7F2 (612 nm) is induced by two-photon absorption of hypersensitive transitions 7F0 →5D2 (465 nm) and 7F1 →5D1 (535 nm). Analysis results suggest that the two-photon excitation strength of these hypersensitive transitions is increased dramatically owing to the C3 symmetry of the coordination field.
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| 关 键 词： | 双光子吸收 敏化发光 过敏 上转换荧光 皮秒激光脉冲 铕 三角架配体 聚苯并咪唑 |
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