...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Polymers for advanced technologies >Ion-doping role in photoinduced processes in pyridine-containing polymeric viscous solutions
【24h】

Ion-doping role in photoinduced processes in pyridine-containing polymeric viscous solutions

机译：含吡啶的聚合物粘性溶液中光诱导过程中的离子掺杂作用

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 photochemical reaction in poly(4-vinyl pyridine)/pyridine compositions under irradiation at 254 nm results in new electronic and structural properties. Photoinduced electronic and structural properties can be assigned to the appearance of the pyridine ringopening photoproducts and interaction of the latter between themselves and with pyridine moieties. Doping of the composition with hydrochloric acid or lithium chloride can control the photochemical reaction, especially the interaction of the ring-opening photoproducts. The cleaved form of the compounds and the aggregates of the latter act as the crosslinkers in the system. Optical property changes are followed by structural changes. Depending on the doped compound, different long-wave-shifted emissions arise in the compositions after irradiation. The far long-wave-shifted emission appears in the system doped with lithium chloride, which is unstable and disappears shortly after cessation of irradiation, while the red-emitting centers of the undoped system are stable and exhibit a second harmonic generation (SHG) signal.
机译：聚（4-乙烯基吡啶）/吡啶组合物中在254 nm辐射下的光化学反应导致新的电子和结构性质。可以将光诱导的电子和结构性质分配给吡啶开环光产物的外观以及后者在它们之间以及与吡啶部分的相互作用。用盐酸或氯化锂掺杂组合物可以控制光化学反应，特别是开环光产物的相互作用。化合物的裂解形式和后者的聚集体在系统中充当交联剂。光学性质改变之后是结构改变。取决于掺杂的化合物，辐照后在组合物中产生不同的长波漂移发射。在掺有氯化锂的系统中出现了长波漂移的发射，该系统不稳定并在停止照射后不久消失，而未掺杂系统的红色发射中心很稳定，并显示出二次谐波（SHG）信号。 。

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