摘要
合成了Ｌｎ（Ｔｒｐ）３Ｃｌ３·Ｈ２Ｏ和Ｌｎ（Ｐｈｅ）Ｃｌ３·５Ｈ２Ｏ（Ｌｎ３＋为Ｓｍ３＋、Ｔｂ３＋）固体配合物微晶。在３００～７００ｎｍ测定并解释了配合物的光声光谱。从无辐射跃迁角度研究芳香氨基酸固体配合物的能级状况和分子内能量传递过程。结合荧光光谱研究了芳香氨基酸固体配合物的发光特性，并建立了激发弛豫模型。
The crystals of Ln (Trp)3Cl3·H2O and Ln (Phe)CL3·5H2O (Ln=Sm, Tb) complexes are synthesized. At the room temperature photoacoustic spectra (PA) of these complexes are determined and discussed in the region of 300～700nm . The PA intensities of central lanthanide ions are interpreted by the probability of nonradiative transitions. It is found that the PA intensity of the ligand bears a relation to the intramolecular energy transfer process. The different PA intensition of the ligand, trytophan, were interpreted by comparing with the fluorescence spectra. The relaxation process models are also studied based on the PA and fluorescence spectra.
基金
国家自然科学基金
关键词
光声光谱
配合物
铽
荧光
钐
色氨酸
苯丙氨酸
Photoacoustic spectra
Rare earth complex
Aromatic amino - acid
Intramolecularenergy transfer
