三苯胺-吡啶衍生物的三光子吸收及光限幅特性  

Three-photon Absorption and Optical Power Limiting of Triphenylamine-pyridine Derivatives

作　　者：胡凯明[1] 钱鹰[1] 黄维[2] 齐齐[1] 吕昌贵[2] 孙岳明[1] 崔一平[2] 

机构地区：[1]东南大学化学化工学院,南京211189 [2]东南大学先进光子学中心,南京210096

出　　处：《化学学报》2010年第1期1-6,共6页Acta Chimica Sinica

基　　金：国家自然科学基金(Nos.60678042;60877024);东南大学科学基金(No.9207041399)资助项目

摘　　要：合成了3个三苯胺-吡啶衍生物4-乙烯基吡啶-4'-(N,N-二苯胺基)苯(PPAB)、三[4-(4-吡啶乙烯基)苯]胺(TPPA)和4-(对-甲基-乙烯基吡啶碘盐)-4'-(N,N-二苯胺基)苯(PBPI),研究了它们的单光子荧光和三光子荧光性质.在1310nm飞秒激光激发下,化合物PPAB,PBPI and TPPA在二氯甲烷溶液中发出很强的三光子上转换荧光,荧光峰分别位于648,625,696nm.用飞秒Ti:Sapphire激光器非线性透过率法测得3个化合物在1310nm三光子吸收截面分别为1.91×10-79,3.46×10-79,3.64×10-79cm6·s2,它们具有很强的三光子吸收和光限幅效应.Triphenylamine-pyridine derivatives,4-vinylpyridine-4＇-（N,N-diphenylamino）benzene （PPAB）,tris[4-（4-pyridylethenyl）phenyl]amine （TPPA）,4-（N,N-diphenylamine）benzene-vinyl-1-methyl-pyridinium iodide （PBPI）,were synthesized and characterized.Single photon excited fluorescence and three-photon excited fluorescence of the chromophores were studied.When pumped with 1310 nm femtosecond laser irradiation,chromophores PPAB,PBPI and TPPA showed strong three-photon upconversion fluorescence at 648,625,696 nm,respectively.The chromophores displayed large three-photon absorption and strong optical power limiting properties.Their three-photon absorption coefficients obtained by a nonlinear transmission method using a femtosecond Ti：sapphire are 1.91×10-79,3.46×10-79,and 3.64×10-79 cm 6·s 2,respectively.

关 键 词：三苯胺-吡啶衍生物 三光子吸收截面 三光子荧光 单光子荧光 光限幅 

分 类 号：TQ253.2[化学工程—有机化工]