摘要
在离子缔合型铕配合物Eu(tta)4.DEASPI中,借助功能阳离子DEASPI的电荷转移激发态可以实现对铕离子的单光子与双光子的敏化发光,其能量传递遵循Frster机制。将Eu(tta)4.DEASPI溶解于多种有机溶剂中(丙酮、DMF、乙醇和乙腈),发现溶剂效应对于该能量传递体系的影响非常显著。借助光谱测量,发现在乙腈溶液中能量传递效率远高于其他三种溶剂。本文对造成溶剂效应的多种因素进行了详细的分析。
In the novel europium(Ⅲ)complex of the form[Eu(tta)4·DEASPI],the sensitization of lanthanide luminescence is via functional cation.The photophysical sensitization process of Eu(tta)4.DEASPI involves an energy transfer from charge transfer excited state of hemicyanine(aminostyrylpyridinium)cation,and the sensitization mechanism follows Frster resonance energy mechanism.The solvent effect on this new kind of europium(Ⅲ)complex was investigated in the present work.The europium(Ⅲ)complex was dissolved in a variety of solvents,i.e.acetone,DMF,ethanol and acetonitrile,and the emission intensity of europium(Ⅲ)complex in acetonitrile is much higher than in other solvents.The detailed discussion about solvent effect is provided in this paper.
出处
《光谱学与光谱分析》
SCIE
EI
CAS
CSCD
北大核心
2013年第9期2502-2505,共4页
Spectroscopy and Spectral Analysis
基金
国家自然科学基金项目(1104162)
山东优秀中青年科学家科研奖励基金项目(2011BSB01110)
山东省高校科技计划项目(J10LA10)资助
关键词
溶剂效应
铕配合物
电荷转移激发态
敏化发光
Solvent effect
Europium complex
Charge transfer excited state
Sensitization