• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Chemistry: A European journal >Photoinduced electron transfer in an amine-corrole-perylene bisimide assembly: Charge separation over terminal components favoured by solvent polarity
【24h】

Photoinduced electron transfer in an amine-corrole-perylene bisimide assembly: Charge separation over terminal components favoured by solvent polarity

机译：胺-Corrole-Perylene Bisimide组件中的光诱导电子转移：受溶剂极性影响的末端组分上的电荷分离

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

An assembly has been synthesised that consists of four units: a meso-substituted corrole (C3), perylene bisimide (PI), and two electron-rich triphenylamine (DPA) units. PI is connected through a 1,4-phenylene bridge to C3, whereas the two DPA units are linked to C3 through a diphenyl ether linkage, which is used for the first time to connect the various moieties. Various synthetic strategies were elaborated, and the chosen one afforded the final system in six steps in an overall yield of 6 %. The resulting assembly, made of three different units, was named a "triad". Excitation of the corrole (C3) or perylene bisimide (PI) units led to the charge-separated state DPA-C3~+-PI~- with a rate k>10~(11)κ~(-1) in benzonitrile and dichloromethane (CH_2Cl_2) or with k of the order of 10~(10)κ~(-1) in toluene. The latter charge-separated state decayed to the ground state with a rate k=1.8×10~9κ~(-1) in toluene. In the polar solvents benzonitrile and dichloromethane, recombination to the ground state competes with a charge shift to form the distal charge-separated state, DPA +-C3-PI -, the formation of which occurs with a yield of 50 %. Recombination to the ground state of DPA~+-C3-PI~- occurs with a rate k=5×10~7κ~(-1) in CH 2Cl 2 and k=2×10 7κ -1 in benzonitrile.
机译：合成了一个由四个单元组成的组件：内消旋取代的甲氧基（C3），per双酰亚胺（PI）和两个富电子的三苯胺（DPA）单元。 PI通过1，4-亚苯基桥连接至C3，而两个DPA单元通过二苯醚键与C3连接，该键首次用于连接各个部分。详细阐述了各种合成策略，选择的策略分六步提供了最终系统，总产率为6％。由三个不同单元组成的最终组件称为“三合一”。激发苯甲腈和二氯甲烷中的甲氧基（C3）或per双酰亚胺（PI）单元导致电荷分离状态DPA-C3〜+ -PI〜-的比率k> 10〜（11）κ〜（-1） （CH_2Cl_2）或k在甲苯中的10〜（10）κ〜（-1）数量级。后者的电荷分离态在甲苯中以k = 1.8×10〜9κ〜（-1）的速率衰减为基态。在极性溶剂苄腈和二氯甲烷中，重组为基态会与电荷移位竞争，从而形成远端电荷分离态DPA + -C3-PI-，其形成的收率为50％。在CH 2Cl 2中以k = 5×10〜7κ〜（-1）的速率发生重组，在苄腈中以k = 2×107κ-1的速率发生重组为DPA〜+ -C3-PI〜-的基态。

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