• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>Electrical, optical, and magnetic properties of organic solid-state materials IV >Polarized Light-Induced Anisotropy in Polymer Films Doped with Az Dyes in the Photostationary State Studied by IR Spectroscopy
【24h】

Polarized Light-Induced Anisotropy in Polymer Films Doped with Az Dyes in the Photostationary State Studied by IR Spectroscopy

机译：红外光谱研究光稳定态中掺有Az染料的聚合物薄膜的偏振光各向异性

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The anisotropy induced in a series of methacrylate polymers doped with Disperse Orange 3 (D03, NO_2-phenyl-N=N-phenyl-NH_2) was investigated by polarized FTIR spectroscopy. Three kinds of methacrylate polymers with different glass transition temperature (Tg), poly(methyl methacrylate) (PMMA), poly(ethyl methacrylate) (PEMA), and poly(butyl methacrylate) (PBMA), were used as polymer matrices. Observed infrared absorption bands of DO3 in the polymer films were assigned to symmetric (NO_2s) and antisymmetric (NO_2as) stretching modes of NO_2, and the C-N stretching mode of C-NH_2 (C-N). The infrared dichroism was observed in these bands under the irradiation. The orientation factors, K_(Zf_n) (f=x, y, z, n=trans, cis), for both isomers of D03 were determined in the photostationary state for every polymer matrix. The factors indicate that it is difficult for NO_2 group to move in the PMMA during trans-cis-trans isomerization and that it is difficult for NH_2 group to move in the PBMA. The dynamical behavior of DO3 molecules which depends on the kind of polymers could be interpreted from orientation factors. This study shows that polarized FTIR spectroscopy is one of the most powerful methods available to analyze the physical mechanisms of photoinduced anisotropy.
机译：通过偏振红外光谱研究了一系列分散橙3（D03，NO_2-苯基-N = N-苯基-NH_2）掺杂的甲基丙烯酸酯聚合物中的各向异性。具有三种不同玻璃化转变温度（Tg）的甲基丙烯酸酯聚合物，聚甲基丙烯酸甲酯（PMMA），聚甲基丙烯酸乙酯（PEMA）和聚甲基丙烯酸丁酯（PBMA）被用作聚合物基质。将聚合物膜中观察到的DO3的红外吸收带指定为NO_2的对称（NO_2s）和反对称（NO_2as）拉伸模式，以及C-NH_2（C-N）的C-N拉伸模式。在辐射下在这些波段中观察到红外二向色性。对于D03的两种异构体，在每个聚合物基体的光平稳状态下确定其取向因子K_（Zf_n）（f ＝ x，y，z，n ＝ trans，顺式）。这些因素表明，在反式-顺式-反式异构化过程中，NO_2基团很难在PMMA中移动，而NH_2基团很难在PBMA中移动。 DO3分子的动力学行为取决于聚合物的种类，这可以从取向因素来解释。这项研究表明，极化FTIR光谱学是可用于分析光致各向异性的物理机理的最强大的方法之一。

著录项

  • 来源
  • 会议地点 Boston MA(US)
  • 作者

    K. TAWA; K. KAMADA; T. SAKAGUCHI; K. OHTA;

  • 作者单位

    Fields and Reactions, PRESTO, JST and Osaka National Research Institute, 1-8-31 Midorigaoka, Ikeda, Osaka 563, JAPAN;

    Osaka National Research Institute, 1-8-31 Midorigaoka, Ikeda, Osaka 563, JAPAN;

    Fields and Reactions, PRESTO, JST and Osaka National Research Institute, 1-8-31 Midorigaoka, Ikeda, Osaka 563, JAPAN;

    Osaka National Research Institute, 1-8-31 Midorigaoka, Ikeda, Osaka 563, JAPAN;

  • 会议组织
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 有机质材料;
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号