• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory >Influence of the Structure of the Amino Group and Polarity of the Medium on the Photophysical Behavior of 4-Amino-1,8-naphthalimide Derivatives
【24h】

Influence of the Structure of the Amino Group and Polarity of the Medium on the Photophysical Behavior of 4-Amino-1,8-naphthalimide Derivatives

机译：氨基基团的结构和介质的极性对4-氨基-1,8-萘二酰亚胺衍生物的光物理行为的影响

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

Photophysical behavior of two series of 4-amino-1,8-naphthalimide derivatives differing in the amino functionality has been studied as a function of the polarity of the medium. The location of the lowest singlet state of the systems, intramolecular charge transfer (ICT) in nature, is largely controlled by the conformation of the 4-amino group rather than its electron-donating ability. The fluorescence properties of the systems are strongly dependent on the nature of the amino group as well as on the polarity of the media. An increase in the length of the dialkyl groups connected to the amino nitrogen or an increase in the size of the ring containing the amino nitrogen enhances the nonradiative deactivation of the fluorescent state of the molecule. The nonradiative relaxation process is facilitated by an increase in the polarity of the media. The present results suggest that the radiationless deactivation of the fluorescent state of the systems is dependent on the nitrogen inversion rate at the amino group.
机译：已经研究了两种氨基官能度不同的4-氨基-1,8-萘二甲酰亚胺衍生物的光物理行为，它是介质极性的函数。系统中最低单线态的位置，本质上是分子内电荷转移（ICT），主要是由4-氨基的构象而不是其供电子能力控制的。该系统的荧光性质在很大程度上取决于氨基的性质以及介质的极性。与氨基氮连接的二烷基的长度的增加或包含氨基氮的环的尺寸的增加增强了分子的荧光态的非辐射失活。介质极性的增加促进了非辐射弛豫过程。目前的结果表明，系统的荧光状态的无辐射失活取决于氨基上氮的转化率。

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