摘要
合成了一种新型的2-苯基-8-羟基喹啉配合物.利用元素分析、红外吸收光谱等方法对配合物的组成进行了分析,分析结果表明:2-苯基-8-羟基喹啉可与锂离子以1∶1的比例形成配合物;对比研究了2-苯基-8-羟基喹啉锂和8-羟基喹啉锂的荧光性质,前者的荧光发射峰位置较后者红移了37 nm.从而说明苯环的取代增加了有机配体π-π共轭的程度,使HOMO-LUMO之间能隙变小,引起发射峰红移.
A new 2-phenyl-8-hydroxy complex has been synthesized. The structure of complex has been characterized by Element anlysis and IR. By comparison of luminescent properties of 2-phenyl-8-hydroxyquinolinolatolithium with 8--hydroxyquinolinolatolhhium, its emission peak located at 492 nm has a red shift about 37 nm compared to that of the later located at 455 nm. It suggests that the mechanism of different fluorescence properties of both above mentioned is ascribed to the formation of the new transition energy level caused by the substitution of phenyl moiety, which narrows the energy gap between HOMO and LUMO, so it results in the appearance of new excitation band and red shift of emission band.
出处
《安徽工程科技学院学报（自然科学版）》
CAS
2005年第3期21-23,共3页
Journal of Anhui University of Technology and Science
关键词
2-苯基-8-羟基喹啉锂
荧光发射峰
红移
2-phenyl-8-hydroxyquinolato lithium
red shift
fluorescence emission peak
