• 主题
高级搜索  >
历史搜索 清空历史
首页> 美国卫生研究院文献>Nature Communications >Non-aromatic annulene-based aggregation-induced emission system via aromaticity reversal process
【2h】

Non-aromatic annulene-based aggregation-induced emission system via aromaticity reversal process

机译：通过芳族逆转过程的非芳族环氧基聚集引发体系

代理获取
本网站仅为用户提供外文OA文献查询和代理获取服务，本网站没有原文。下单后我们将采用程序或人工为您竭诚获取高质量的原文，但由于OA文献来源多样且变更频繁，仍可能出现获取不到、文献不完整或与标题不符等情况，如果获取不到我们将提供退款服务。请知悉。
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Aggregation-induced emission (AIE) is a photophysical phenomenon correlated closely with the excited-state intramolecular motions. Although AIE has attracted increasing attention due to the significant applications in biomedical and optoelectronics, an in-depth understanding of the excited-state intramolecular motion has yet to be fully developed. Here we found the non-aromatic annulene derivative of cyclooctatetrathiophene shows typical AIE phenomenon in spite of its rotor-free structure. The underlying mechanism is investigated through photoluminescence spectra, time-resolved absorption spectra, theoretical calculations, circular dichroism as well as by pressure-dependent fluorescent spectra etc., which indicate that the aromaticity reversal from ground state to the excited state serves as a driving force for inducing the excited-state intramolecular vibration, leading to the AIE phenomenon. Therefore, aromaticity reversal is demonstrated as a reliable strategy to develop vibrational AIE systems. This work also provides a new viewpoint to understand the excited-state intramolecular motion behavior of lumiongens.
机译：聚集诱导发射（AIE）是一种与激发态分子内运动密切相关的光物理现象。尽管由于在生物医学和光电子学中的重要应用，AIE引起了越来越多的关注，但是对激发态分子内运动的深入了解尚未完全发展。在这里，我们发现环辛酸噻吩的非芳族环戊烯衍生物尽管具有无转子结构，但仍显示出典型的AIE现象。通过光致发光光谱，时间分辨吸收光谱，理论计算，圆二色性以及与压力相关的荧光光谱等研究了其潜在机理，这表明从基态到激发态的芳香性反转是驱动力。引起激发态分子内振动，导致AIE现象。因此，芳香族逆转被证明是开发振动AIE系统的可靠策略。这项工作也为理解发光剂的激发态分子内运动行为提供了新的观点。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
代理获取

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