...
首页> 外文期刊>Bulletin of the Chemical Society of Japan >Photoisomerization of trans-Stilbene in Poly(vinyl alcohol) and Importance of Solute-Polymer Interactions
【24h】

Photoisomerization of trans-Stilbene in Poly(vinyl alcohol) and Importance of Solute-Polymer Interactions

机译:聚(乙烯醇)中反芪的光学硅酸盐和溶质 - 聚合物相互作用的重要性

获取原文
获取原文并翻译 | 示例
           

摘要

We have measured the polarized absorption and picosecond transient absorption spectra of trans-stilbene in poly(vinyl alcohol) (PVA) films. We found that the dichroic ratio in the first absorption band and the lifetime of the Si state increased as the hold-time was increased. The hold-time is the duration in which sample films were kept wet before they were dried. For similar values of the hold-time, the absorption spectra showed a red shift and slight sharpening. These results indicate that during the hold-time, solute polymer interactions become strong; these interactions not only act as the orienting force during film stretching but also act as friction that opposes isomerization.
机译:我们已经测量了聚(乙烯醇)(PVA)膜中的反式芪的偏振吸收和PicoSecond瞬态吸收光谱。 我们发现,随着保持时间的增加,第一吸收带中的二向色比和Si状态的寿命增加。 保持时间是在干燥之前将样品膜保持湿的持续时间。 对于保持时间的类似值,吸收光谱显示出红移和轻微锐化。 这些结果表明,在保持时间期间,溶质聚合物相互作用变强; 这些相互作用不仅充当薄膜伸展期间的定向力,而且作为反对异构化的摩擦。

著录项

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