CAJ | 학술논문

将光声光谱和荧光光谱两种互补的手段结合起来，从无辐射跃迁和辐射跃迁两个角度讨论了固态稀土配合物的激发-弛豫过程。测定了稀土配合物(Tb(AA)3*2H2O、Tb(AA)3bpy和Tb(AA)3phen)固体粉末的光声光谱和荧光光谱。与荧光光谱相结合，光声光谱反映了不同配合物发光效率的变化，Tb(AA)3phen、Tb(AA)3*2H2O和Tb(AA)3bpy的发光效率依次增强。研究了配合物的分子内能量传递和弛豫过程，配体最低三重态能级与稀土离子共振能级之间的能级差是否匹配是配体敏化中心离子发光的关键因素。
장광성광보화형광광보량충호보적수단결합기래，종무복사약천화복사약천량개각도토론료고태희토배합물적격발-이예과정。측정료희토배합물(Tb(AA)3*2H2O、Tb(AA)3bpy화Tb(AA)3phen)고체분말적광성광보화형광광보。여형광광보상결합，광성광보반영료불동배합물발광효솔적변화，Tb(AA)3phen、Tb(AA)3*2H2O화Tb(AA)3bpy적발광효솔의차증강。연구료배합물적분자내능량전체화이예과정，배체최저삼중태능급여희토리자공진능급지간적능급차시부필배시배체민화중심리자발광적관건인소。
The excitation-relaxation processes of the solid Tb(Ⅲ) complexes (Tb(AA)3*2H2O,Tb(AA)3bpy and Tb(AA)3phen) have been studied by photoacoustic spectroscopy (PAS) with the conjunction of fluorescence spectroscopy.The relaxation processes are studied from two aspects:nonradiative process and radiative process.The photoacoustic amplitude spectra and luminescence spectra of the complexes have been measured.Combined with the luminescence spectra,the PA amplitude spectra reflect the variation of the luminescence efficiency.According to the variation of the luminescence efficiency,the intramolecular energy transfer and relaxation processes of the complexes were studied.The suitability of the energy gap between the lowest triplet level of ligand and resonance energy level of rare earth ion is critical for efficient energy transfer.