稀土配合物Tb(Phen)x(Bipy)(4-x)(NO3)3 (x=4,3,2,1,0)(1×10-3 mol*L)溶液中, 当配体邻菲罗琳(Phen)和2,2′-联吡啶(Bipy)共存同一铽的配合物中时, Tb3+的特征发光被敏化, 其中Tb(Phen)3(Bipy)(NO3)3的荧光强度是最强, Tb(Bipy)4(NO3)3的荧光强度是最弱. Tb3+在(CH3)3Si-MCM-41-Tb(Bipy)4(NO3)3中的特征发光强度最强, 而在MCM-41-Tb(Phen)3(Bipy)(NO3)3 和(CH3)3Si-MCM-41-Tb(Phen)3(Bipy)(NO3)3中的发光变得很弱. 当客体分子Tb(Phen)4(NO3)3和Tb(Bipy)4(NO3)3被组装到疏水的主体分子筛(CH3)3Si-MCM-41孔道里要比组装到亲水的分子筛MCM-41孔道里的发光要强; 当客体分子是Tb(Phen)3(Bipy)(NO3)3和Tb(Phen)2(Bipy)2(NO3)3时, 它们的发光情况与前一种情况刚好相反即亲水的极性内腔环境有利于客体分子的发光; 平行的荧光寿命试验的结论也是一致的. 说明在不同的超分子体系中, 疏水和亲水的环境都有可能利于客体分子的发光. 在(CH3)3Si-MCM-41-Tb(Phen)(Bipy)3(NO3)3中的配体的荧光强度要比在MCM-41-Tb(Phen)(Bipy)3(NO3)3中的强; 而Tb3+的特征荧光强度的情况刚好相反. MCM-41-Tb(Phen)(Bipy)3(NO3)3和(CH3)3Si-MCM-41-Tb(Phen)(Bipy)3(NO3)3有明显的双指数衰减, 双指数衰减拟合所得荧光寿命分别为168.8, 641.1 μs和73.2, 590.4 μs, 幅度比为0.96∶1和2.3∶1. MCM-41-Tb(Phen)(Bipy)3(NO3)3与(CH3)3Si-MCM-41-Tb(Phen)(Bipy)3(NO3)3的荧光寿命之比为2.5∶1和1.1∶1, 而它们的Tb3+的特征荧光强度比为1∶2.5和0.96∶1. 实验表明主客体之间的相互作用和选择性会对超分子体系的发光产生巨大的影响.
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