D-π-A型噁二唑衍生物多光子吸收和多光子荧光特性研究  

Study on the Multi-photon Absorption Properties of an Oxadiazole Derivative with D-π-A Sturcture

作　　者：黄维[1] 朱拓[2] 陈国庆[2] 刘畅[1] 吕昌贵[1] 钱鹰[3] 崔一平[1] 

机构地区：[1]东南大学先进光子学中心,南京210096 [2]江南大学理学院,无锡214122 [3]东南大学化学化工学院,南京210096

出　　处：《光电子．激光》2007年第12期1504-1507,共4页Journal of Optoelectronics·Laser

基　　金：江苏省自然科学基金项目(BK2006553)

摘　　要：研究了不对称型有机分子[4-（2{4-[5-（4-叔丁基苯基）-1，3，4-噁二唑-2]-苯基}-乙烯基）-苯基]-二苯胺的多光子吸收及其荧光特性。该分子具有典型的D-π-A型推拉电子结构，三苯胺基团作为给电子基通过苯乙烯共轭链桥接到吸电子基1，3，4-噁二唑基团。在远离线性吸收区的800-1570nm波长范围内，实验结果表明该化合物分子具有明显的双光子吸收、三光子吸收性质和较强的频率上转换荧光。根据非线性透过率法测得该化合物在800nm的双光子吸收系数为3．95cm／GW，在1255nm的三光子吸收系数为3×10^-5cm^3／GW2。The multi-photon absorption properties and multi-photon excited fluorescence of an asymmetric organic dye [4-（2 {4-E5-（4-tert butyl-phenyl） [1,3,4]oxadiazol-2-yl]-phenyl}-vinyl） phenyl]-diphenyl-amine） are studied in this paper. The molecule has a typical D-π-A structure with terminal units of electron donor and accepter groups. The triphenylamine group, as the electron donor,is connected to the oxadiazole group which is the electron accepter through the cinnamene group. At the wavelengths of 800-1570 nm far away from linear absorption,the experimental results show that the molecule has obvious two-and three-photon absorption and mult-photon excited frequency upconversion fluorescence. The experimentally measured two-and three-photon absorption coefficients reach 3.95 cm/GW at 800 nm and 3 ×10^-5 cm^3/GW2 at 1255 nm respectively.

关 键 词：双光子吸收 三光子吸收 频率上转换荧光 

分 类 号：O437[机械工程—光学工程]