影像科学与光化学 ›› 2002, Vol. 20 ›› Issue (4): 276-282.DOI: 10.7517/j.issn.1674-0475.2002.04.276

• 研究简报 • 上一篇    下一篇

新型有机/无机聚合物网络的合成与二阶非线性光学

王坚1, 张灵志1, 陈用烈1, 梁兆熙1, 蔡志岗2   

  1. 1. 中山大学化学化工学院高分子研究所, 广州, 510275;
    2. 中山大学光电材料与技术国家重点实验室, 广州, 510275
  • 收稿日期:2001-11-16 修回日期:2002-02-07 出版日期:2002-07-23 发布日期:2002-07-23
  • 通讯作者: 梁兆熙
  • 基金资助:
    国家自然科学基金(19604015);广东省自然科学基金(980346,001249)

SYNTHESIS AND SECOND-ORDER NONLINEARITY OF NOVEL ORGANIC/INORGANIC NETWORK BY SOL-GEL PROCESS

WANG Jian1, ZHANG Ling-zhi1, CHEN Yong-lie1, LIANG Zhao-xi1, CAI Zhi-gang2   

  1. 1. Institute of Polymer Science, School of Chemistry and Chemical Engineering, Zhongshan University, Guangzhou 510275, P. R. China;
    2. State Key Laboratory of Optoelectronics Materials and Technologies, Zhongshan University, Guangzhou 510275, P. R. China
  • Received:2001-11-16 Revised:2002-02-07 Online:2002-07-23 Published:2002-07-23

摘要: 合成了含双官能团的生色团4’-(N,N-二羟乙基)氨基-4-硝基偶氮苯(DR19),采用溶胶-凝胶方法,通过"两端"交联设计合成了光学性能良好的二阶非线性新型有机/无机复合聚合物网络.经过极化交联后,其在室温和较高温度下均具有良好的二次谐波产生(SHG)稳定性,表明该交联聚合体系能形成致密的硅-氧网络,从而有效地抑制生色团分子的取向松弛.

关键词: 溶胶-凝胶, 有机/无机聚合物网络, 偶氮苯生色团, 二阶非线性光学

Abstract: Chromophore with two active OH groups 4’-(N,N-dihydroxyethyl)amino-4-nitroazobenzene(DR19) was synthesized and a novel organic/inorganic polymer network with fine second-order nonlinearities was designed and prepared by double-end crosslinking of DR19 through sol-gel process.It was observed that this polymer film had good SHG thermal stability under room and elevated temperatures.The results show that this crosslinking system formed a dense silicon-oxygen network structure,thus could effectively inhibit the orientation relaxation of the chromophore molecules and hence improve the thermal stability of second-order nonlinearity of the material.

Key words: sol-gel, organic/inorganic polymer network, azobenzene chromophore, second-order nonlinearity

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