高压对三明治结构的双[2,3,9,10,16,17,23,24-八-(对甲氧基苯氧基)]酞菁铕光谱行为的影响  

High Pressure Effect on Spectroscopy Properties of Sandwich-like Europium Bis[2,3,9,10,16,17,23,24-octakis(4-methoxyphenoxy)phthalocyninato]

作　　者：范久峰[1] 李竑[1] 何黎明[1] 熊飞[1] 李沙瑜[1] 王双青[1] 沈淑引[1] 许慧君[1] 杨国强[1] 

机构地区：[1]中国科学院化学研究所光化学重点实验室

出　　处：《化学学报》2004年第1期37-41,共5页Acta Chimica Sinica

基　　金：国家自然科学基金;国家重点基础研究发展规划 (No .G2 0 0 0 0 781 0 0 )资助项目

摘　　要：本工作对具有三明治结构的双 [2 ,3 ,9,10 ,16,17,2 3 ,2 4 八 (对甲氧基苯氧基 ) ]酞菁铕在不同压力下的光谱行为进行了研究 .结果表明 ,压力对配合物的Q带吸收具有明显的调制作用 ,随着压力的增加 ,对应Q带吸收的LUMO和SUMO能级降低 .由于LUMO和SUMO (SecondUnoccupiedMolecularOrbit)能级的降低 ,使得Soret带吸收后到达的高能级与LUMO和SUMO能级间隔增加 ,减慢了从高能级的无辐射过程 .随着压力的增加 ,对应于Soret带吸收的荧光强度 (4 10nm)大大增强 .Spectroscopic properties of a sandwich-like metal phthalocynine, europium bis[2,3,9,10,16,17,23,24-octakis(4-methoxyphenoxy)phthalocyninato], have been studied at different pressures. The pressure tuning effect has been observed in the absorption of the Q band for the complex. With increase of pressure, the LUMO and SUMO(Second Unoccupied Molecular Orbit) of the complex are stabilized to lower level. It increases the energy gap between the LUMO (or SUMO) and the higher energy level, which corresponds to the absorption of the Soret band of the complex. This enhancement of the energy gap slows down the radiationless internal conversion of the electron that has been excited to the higher energy level by the Soret absorption. Thus obvious increase of the emission by the Soret absorption has been observed with increase of pressure.

关 键 词：三明治结构 双[2 3 9 10 16 17 23 24—八—(对甲氧基苯氧基)]酞菁铕 压力 光谱行为 光电子材料 电子结构 

分 类 号：O657.3[理学—分析化学]