...
  • 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 >Application of Time-Resolved Linear Dichroism Spectroscopy: Rapid Relaxation of Excited Charge Trannsfer Complexes
【24h】

Application of Time-Resolved Linear Dichroism Spectroscopy: Rapid Relaxation of Excited Charge Trannsfer Complexes

机译：时间分辨线性二色光谱的应用：激发电荷转移复合物的快速弛豫

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

Time-resolved linear dichroism spectroscopy has been used to study the charge-transfer complexes formed between methylated benzene donors and 1,2,4,5-tetracyanobenzene as acceptor. The angle between the charge-transfer absorption transition moment and the photochemically produced radical anion absorption transition moment, after relaxation, has been measured for several complexes. A simple theoretical model was used to interpret the measured values. This model correlated the extent of localized excitation mixed into the charge-transfer transitions with the results of time-resolved linear dichroism measurements. Furthermore, the comparison between the measured and predicted transition moment directions suggests that a minor geometry change occurs after excitation of these complexes. The observation of the relative transition moment vector of the initial state(s) for some of the complexes was also possible. In these cases, the initial transition moment vectors observed are not consistent with absorption due to the radical anion but are believed to originate from a different electronic state, presumable from an excited state of the CT complex. These results imply that the rapid relaxation process observed for these complexes must be electronic in nature and not purely geometric.
机译：时间分辨线性二色谱已用于研究甲基化苯供体与1,2,4,5-四氰基苯作为受体之间形成的电荷转移配合物。弛豫后，已测量了几种配合物的电荷转移吸收跃迁矩与光化学产生的自由基阴离子吸收跃迁矩之间的夹角。一个简单的理论模型被用来解释测量值。该模型将混合到电荷转移跃迁中的局部激发程度与时间分辨线性二向色性测量结果相关联。此外，实测和预测的过渡矩方向之间的比较表明，在激发这些配合物后会发生微小的几何变化。还可以观察某些配合物的初始状态的相对转变矩矢量。在这些情况下，观察到的初始跃迁矢量与自由基阴离子引起的吸收不一致，但据信源自不同的电子态，推测是由于CT络合物的激发态。这些结果表明，对于这些络合物观察到的快速弛豫过程本质上必须是电子的，而不是纯粹的几何形状。

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