用飞秒Ti:sapphire激光测定对称型化合物的双光子吸收和上转换荧光

功能材料, 2008, 39(11): 1774-1777.

用飞秒Ti:sapphire激光测定对称型化合物的双光子吸收和上转换荧光

钱鹰 ^1, , 朱晓勤 ^2, , 黄维 ^3, , 吕昌贵 ^4, , 林国强 ^5, , 崔一平 ^6,

1.东南大学,化学化工学院,江苏,南京,211189

2.东南大学,化学化工学院,江苏,南京,211189

3.东南大学,先进光子学中心,江苏,南京,210096

4.东南大学,先进光子学中心,江苏,南京,210096

5.东南大学,化学化工学院,江苏,南京,211189

6.东南大学,先进光子学中心,江苏,南京,210096

基金项目: 国家自然科学基金(60678042) 国家自然科学基金(9207041399)

关键词：对称化合物 , 双光子吸收 , 上转换荧光

Two-photon absorption and upconversion fluorescence by using a femtosecond Ti:sapphire laser in symmetrical chromophores

用800nm波长的飞秒Ti:sapphire激光测定了2个对称型噁二唑衍生物2,5-二[4-(2-N,N-二苯氨基苯乙烯基)苯基]-1,3,4-噁二唑(PASPO)与2,5-二[4-{2-N,N-二(4-溴代苯)氨基苯乙烯基]苯基}-1,3,4-噁二唑(BrPASPO)的双光子吸收和双光子激发荧光光谱,其飞秒双光子吸收截面为20.6和9.91GM,双光子泵浦上转换荧光最大波长分别在535和545nm.测定了紫外吸收、荧光光谱,研究了化合物在不同溶剂中的溶致变色效应.化合物PASPO和Br-PASPO在二氯甲烷溶液中的吸收峰分别位于412和403nm,荧光发射峰分别位于511和495nm,荧光量子产率分别为0.73和0.70.

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