...
  • 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 >Photophysics of the 6H-indolo[2,3-b]quinoline molecule: The excited-state double-proton-transfer process in perspective
【24h】

Photophysics of the 6H-indolo[2,3-b]quinoline molecule: The excited-state double-proton-transfer process in perspective

机译：6H-吲哚并[2,3-b]喹啉分子的光物理：激发态双质子转移过程的视角

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 doubly hydrogen-bonded homodimer of 11-propyl-6H-indolo[2,3-b]quinoline (11P6HIQ) has been reported elsewhere as a paradigm of the excited-state double-proton-transfer process through a concerted mechanism. Herein, a simpler molecular structure, 6H-indolo[2,3-b]quinoline (6HIQ), has been proposed as a counter example of the previous one. While the 11-propyl derivative seemingly forms doubly hydrogen-bonded homodimers, the 6HIQ molecule generate dimers similar to the card-pack dimers reported for the 1-azacarbazole molecule. The 11P6HIQ molecule has an emission centered at 560 nm (reported elsewhere), but in this work 6HIQ only exhibits emission at ca. 400 nm under the same experimental conditions. The stationary-state spectroscopy and quantum chemistry calculations demonstrate that the 6HIQ molecule exhibits aggregation on lowering the temperature from 298 to 123 K; however, this aggregate species is one other than the doubly hydrogen-bonded homodimer, and therefore, no double proton transfer can be undergone.
机译：11-丙基-6H-吲哚并[2,3-b]喹啉（11P6HIQ）的双氢键均二聚体已被报道为通过协同机制激发态双质子转移过程的范例。在此，已经提出了更简单的分子结构6H-吲哚并[2,3-b]喹啉（6HIQ）作为前一个的反例。尽管11-丙基衍生物似乎形成了氢键键合的同二聚体，但6HIQ分子产生的二聚体与1-氮杂咔唑分子报道的卡位二聚体相似。 11P6HIQ分子的发射中心为560 nm（在其他地方报道），但在此工作中6HIQ仅在约750 nm处发射。在相同的实验条件下为400 nm。稳态光谱学和量子化学计算表明，6HIQ分子在将温度从298 K降低到123 K时表现出聚集作用。但是，这种聚集体不是双氢键同质二聚体，因此不能进行双质子转移。

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