对位取代二苯乙烯衍生物的合成和非线性光学性质

合成了反式-4-[N-（乙氧基羰基-4"-硝基苯基）-N'-乙基氨基]-4'-(二甲基氨 基)二苯乙烯(DMANHAS)和三个新有机化合物。用核磁、红外以及元素分析进行了表 征。测试了紫外吸收光谱、单光子荧光光谱和双光子荧光光谱。在800nm的飞秒脉 冲激光激发下,反式-4-（N-羟乙基-N'-乙基氨基）-4'-(二甲基氨基)二苯乙烯 (DMAHAS)和反式-4-(N-羟乙基-N'-乙基氨基)-4'-(二乙基氨基)二苯乙烯(DEAHAS) 均发出较强的蓝紫色上转换荧光,荧光峰分别位于436和440nm,而DMANHAS和反式- 4-[N-(乙氧基羰基-4"-硝基苯基)-N'-乙基氨基]-4'-（二乙基氨基）二苯乙烯 (DEANHAS)没有荧光。

Synthesis and Nonlinear Optical Properties of New p-Substituted Stilbenes

Three new chromophores and 4 nitro benzoic acid 2 ({4 [2 (4 dimethylamino phenyl) vinyl] phenyl} ethylamino) ethyl ester (DMANHAS) have been synthesized and the structures have been characterized by 1H NMR, IR and elemental analyses. Linear absorption, single photon induced fluorescence and two photon induced fluorescence are experimentally studied. When pumped with 800 nm laser irradiation, 2 ({4 [2 (4 dimethylamino phenyl) vinyl] phenyl} ethylamino) ethanol (DMAHAS) and 2 ({4 [2 (4 diethylamino phenyl) vinyl] phenyl} ethylamino) ethanol (DEAHAS) show strong two photon induced blue fluorescence at 436 and 440 nm respectively, while DMANHAS and 4 nitro benzoic acid 2 ({4 [2 (4 diethylamino phenyl) vinyl] phenyl} ethylamino) ethyl ester (DEANHAS) exhibit no fluorescence.