含噻吩基三取代双光子吸收材料的合成

Synthesis of a Two-photon Absorption Material with Thiofuran Group Tri-substituted Structure

合成了一种新型三取代结构的双光子吸收材料1,3,5-三[4-[2-(噻吩)乙烯基]苯基]苯,通过元素分析、1 H NMR和红外光谱对其进行表征。测试了材料的紫外吸收光谱、单光子荧光光谱和双光子荧光光谱,并测出其双光子吸收截面为426×10-50cm4·s·photon-1。以1,3,5-三[4-[2-(噻吩)乙烯基]苯基]苯为引发剂,甲基丙烯酸甲酯齐聚物(CN120C80)为单体,飞秒激光器(200fs、76 MHz、Ti∶sapphire)为发光源,进行了三维周期微结构的制作。

A novel two-photon absorption material with tri-substituted structure 1,3,5-tris[-4-[-2-（thiofuran） ethenyl3phenyl-]benzene was synthesized. The structure of the compound was characterized by elemental analysis, 1H NMR, and IR spectra. The ultraviolet absorption spectra, one-photon induced fluorescence spectra and two-photon in- duced fluorescence spectra were experimentally studied. The two-photon absorption cross-section was as high as 426×10^-50 cm·s·photon^-1. A pulse duration of 200 fs and repetition rate of 76 MHz, mode-locked Ti ： sapphire laser was used for two-photon microfabrication. Some three dimensional lattices were created by two-photon polymeri- zation of an acrylic eater oligomer using this initiator.