首页> 外文期刊>Chemistry: A European journal >Mono-Heteroatom Substitution for Harnessing Excited-State Structural Planarization of Dihydrodibenzo[a,c]phenazines
【24h】

Mono-Heteroatom Substitution for Harnessing Excited-State Structural Planarization of Dihydrodibenzo[a,c]phenazines

机译:单杂原子替代用于利用兴奋状态的二氢苯并干细胞素[A,C]苯脲素的兴奋状态平面化

获取原文
获取原文并翻译 | 示例
           

摘要

With the aim of generalizing the structure–properties relationship of bending heterocyclic molecules that undergo prominent photoinduced structural planarization (PISP), a series of new dihydrodibenzo[ac]phenazine derivatives in which one nitrogen atom is replaced by oxygen (PNO), sulfur (PNS), selenium (PNSe), or dimethylmethanediyl (PNC) was strategically designed and synthesized. Compounds PNO, PNS, and PNSe have significantly nonplanar geometries in the ground state, which undergo PISP to give a planarlike conformer and hence a large emission Stokes shift. A combination of femtosecond early relaxation dynamics and computational approaches established an R~*→I~* (intermediate)→ P~* sequential kinetic pattern for PNS and PNSe, whereas PNO undergoes R*→P~* one-step kinetics. The polarization ability of the substituted heteroatoms, which is in the order O
机译:旨在概括弯曲杂环分子的结构性质关系,该杂环分子经历突出的光致结构平面化(PISP),一系列新的二氢苯并苯并衍生物,其中一个氮原子被氧(PNO),硫(PNS)取代),硒(PNSE),或二甲基甲酰基(PNC)被策略性设计和合成。化合物PNO,PNS和PNSE在地态中具有显着的非平面几何形状,其经历PISP以提供平面状的构象,因此大量发射斯托克斯转移。 Femtosecond早期放松动态和计算方法的组合建立了R〜*→I〜*(中间)→P〜*连续动力学模式,用于PNS和PNSE,而PNO经历R *→P〜*一步动词。取代的杂原子的偏振能力在O

著录项

  • 来源
    《Chemistry: A European journal》 |2019年第72期|共10页
  • 作者单位

    Key Laboratory for Advanced Materials and Institute of Fine Chemicals East China University of Science &

    Technology Shanghai 200237 Shanghai (P. R. China);

    Department of Chemistry National Taiwan University Taipei 10617 R.O.C. (Taiwan);

    Department of Chemistry National Taiwan University Taipei 10617 R.O.C. (Taiwan);

    Department of Chemistry National Taiwan University Taipei 10617 R.O.C. (Taiwan);

    Department of Chemistry National Taiwan University Taipei 10617 R.O.C. (Taiwan);

    Department of Chemistry National Taiwan University Taipei 10617 R.O.C. (Taiwan);

    Department of Chemistry National Taiwan University Taipei 10617 R.O.C. (Taiwan);

    Department of Chemistry National Taiwan University Taipei 10617 R.O.C. (Taiwan);

    Department of Chemistry National Taiwan University Taipei 10617 R.O.C. (Taiwan);

    Key Laboratory for Advanced Materials and Institute of Fine Chemicals East China University of Science &

    Technology Shanghai 200237 Shanghai (P. R. China);

    Key Laboratory for Advanced Materials and Institute of Fine Chemicals East China University of Science &

    Technology Shanghai 200237 Shanghai (P. R. China);

    Department of Chemistry National Taiwan University Taipei 10617 R.O.C. (Taiwan);

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 应用化学;
  • 关键词

    fluorescence; heterocycles; photoinduced planarization; sensors; substituent effects;

    机译:荧光;杂环;光诱导的平坦化;传感器;取代效应;

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