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化学学报
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化学学报 ›› 2003, Vol. 61 ›› Issue (3): 307-311.    下一篇

研究论文

2,4,6-三苯乙烯基均三嗪（TSTA）的结构及其光学性质

崔月芝;方奇;薛刚;于文涛;雷虹;刘志强   

  1. 山东大学;信息科学与工程学院
  • 发布日期:2003-03-15

Structure of Octupolar Molecule TSTA and Its Optical Properties

Cui Yuezhi;Fang Qi;Xue Gang;Yu Wentao;Lei Hong;Liu Zhiqiang   

  1. State Key Laboratory of Crystal Material,Shandong;School of Information Science and Engineering,Light Industry College of Shandong
  • Published:2003-03-15

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611

被引次数

4

制备了2，4，6一三苯乙烯基均三嗪（TSTA）的晶体，用四圆X射线衍射法测得 该晶体属于正交晶（No.36），晶体结构不仅非中心对称，而且具有极性，分子构 型为微弯曲的平面三角形．该化合物独特的分子结构和晶体构导致了其二阶非线性 光学效应，在1064nm ps脉冲基频光下，测得其粉末的倍频光强度为尿素的1.8倍有 很好的透明性（最长波长吸收峰位于322nm）和较好的热稳定性（熔点为225-227℃ ）

关键词: 苯乙烯 P, 三嗪 P, 晶体结构, X射线衍射分析, 非线性光学, 热稳定性

2,4,6-Tristyryl-s-triazine (TSTA, C_(27)H_(21)N_3) is an octupolar compound with a molecular configuration of a slightly curved planar triangle. Its crystal is determined to belong to the orthorhombic space group Cmc2_1 (No. 36) by a four-circle diffractometer. The polar non-centrosymmetric crystal structure accounts for its significant second-harmonic generation (SHG) efficiency, which is 1.8 times as large as that of urea under 1064 nm input laser pulses. The good thermal stability (melting point 225 -227℃) and excellent transparency (with peak position at 322 nm in absorption spectrum) qualify it as a promising SHG material.

Key words: STYRENE P, TRIAZINE P, CRYSTAL STRUCTURE, XRD, NON LINEAR OPTICS, THERMAL STABILITY

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