• 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 >Excited-state intramolecular charge transfer in 9-aminoacridine derivative
【24h】

Excited-state intramolecular charge transfer in 9-aminoacridine derivative

机译：9-氨基ac啶衍生物的激发态分子内电荷转移

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

A new fluorochromic dye was obtained from the reaction of 9-aminoacridine with ethyl-2-cyano-3-ethoxyacrylate. It displays complex fluorescence that is ascribed to normal emission from the acridine chromophore in addition to excited-state intramolecular charge transfer (ESICT) formed upon light excitation. The analysis of the fluorescence decays in different solvents reveals two short-lived components in the range of 80-450 ps and 0.7-3.2 ns, ascribed to the formation and decay of the intramolecular charge transfer (ICT) state, in addition to a third component of about 9.0 ns, which is related to the normal emission from the acridine singlet excited state, probably in an enol-imine tautomeric form. The ICT emission is readily quenched by water addition to polar solvents, and this effect is ascribed to changes in the keto-amine/enolimine equilibrium of this fluorochromic dye.
机译：9-氨基ac啶与-2-氰基-3-乙氧基丙烯酸乙酯的反应获得了一种新的荧光染料。它显示出复杂的荧光，除了激发光时形成的激发态分子内电荷转移（ESICT）外，还归因于from啶发色团的正常发射。通过分析不同溶剂中的荧光衰减，可以发现在80-450 ps和0.7-3.2 ns范围内有两个短寿命成分，除了第三个外，还归因于分子内电荷转移（ICT）状态的形成和衰减。大约9.0 ns的电子组分，可能与an啶-亚胺互变异构形式的from啶单峰激发态的正常发射有关。通过将水添加到极性溶剂中，ICT发射很容易被淬灭，并且这种影响归因于该氟代变色染料的酮胺/烯醇胺平衡的变化。

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