一种新噻吩衍生物单双光子荧光性质的研究  

Single-and Two-photon Excited Fluorescence of a New Thiophene Deviue

作　　者：卢萍[1] 王飞[1] 夏光明[1] 

机构地区：[1]济南大学化学化工学院,山东济南250022

出　　处：《济南大学学报（自然科学版）》2004年第4期350-352,共3页Journal of University of Jinan(Science and Technology)

摘　　要：合成了一种基于杂环体系噻吩的新化合物 2 ,5 -二(对 -N ,N -二甲氨基苯乙烯基 )噻吩 ,测定结果表明其能发射出强的蓝绿色荧光 ,发射峰位于 5 30nm左右 ,荧光寿命约为 1ns。在不同极性溶剂中 ,化合物的荧光光谱表现出显著的溶剂效应。 80 0nmfs激光的激发下 ,目标化合物发出很强的频率上转换荧光 ,双光子激发荧光谱在外形上与单光子激发荧光谱非常相似。用荧光法测定了目标化合物的双光子吸收截面 。A new compound based on thiophene,2,5-bis(p-N,N-dimethylaminostyryl)-thiophene(BMST)was synthesized.It can emit strong blue-green single-photon excited fluorescence(SPEF),whose peak emission was located at ～530?nm and corresponding lifetime was ～1?ns.The target compound shows strong solvent effect in their SPEF spectra.Excited by femto-second laser of 800?nm,strong up-converted fluorescence of the target compound was detected.The profile of two-photon excited fluorescence(TPEF)was similar to that of SPEF.The two-photon absorption(TPA)cross section of BMST was determined by use of TPEF method.The target compound shows a large TPA cross section in our experiment.

关 键 词：双光子吸收 上转换荧光 噻吩 

分 类 号：O626.12[理学—有机化学]