蒽醌冠醚铕离子络合物分子内能量转移  

INTRAMOLECULAR ENERGY TRANSFER IN ANTHRAQUIONE CROWN ETHER Eu^(3+)COMPLEX

作　　者：江华[1] 许慧君[1] 沈淑引[1] 周庆复[1] 

机构地区：[1]中国科学院感光化学研究所,北京100101

出　　处：《感光科学与光化学》2000年第3期223-228,共6页Photographic Science and Photochemistry

基　　金：国家自然科学基金资助项目(29733100)

摘　　要：研究了蒽醌冠醚及其铕离子络合物的光物理性质 .研究结果表明 ,选择性激发铕离子络合物中的蒽醌冠醚能发生分子内能量转移 ,观察到铕离子的发光 .荧光衰减测试表明由于冠醚的包络作用使得铕离子络合物的荧光寿命较未络合铕离子的寿命有所延长 .向蒽醌冠醚铕离子络合物的甲基四氢呋喃溶液中加入水后 ,其荧光强度明显减弱 ,这说明了蒽醌冠醚对铕离子的络合作用不完全 ,未能有效地阻挡水和溶剂对铕离子的影响 .The photophysical properties of anthraquione crown ether and its Eu 3+ complex were investigated. Selective excitation of the anthraquione moiety intramolecular energy transfer from excitated anthraquione to Eu 3+ occurred, the luminescence of Eu 3+ was observed.Luminescence decay measurement showed that the lifetime of Eu 3+ in the complex was prolonged as the result of encapsulation of Eu 3+ in the crown ether ring. Addition of water into the solution of Eu 3+ ?complex,the intensity of the emission of Eu 3+ complex decreased showing that the crown ether does not completely shield the Eu 3+ from interaction with water and the solvent.

关 键 词：蒽醌冠醚 能量转移 铕离子络合物 

分 类 号：O644[理学—物理化学]