Indeno[1,2-b]fluorene-Based [2,2]Cyclophanes with 4n/4n and 4n/[4n+2] π Electrons: Syntheses, Structural Analyses, and Excitonic Coupling Properties

Chi Shin Wang, Yu Chen Wei, Kai Hsin Chang, Pi Tai Chou, Yao Ting Wu

研究成果: Article同行評審

14 引文 斯高帕斯(Scopus)

摘要

Indeno[1,2-b]fluorene-based [2,2]cyclophanes with 4n/4n and 4n/[4n+2] π-electron systems were prepared, and their structures were identified by X-ray crystallography. With short π–π distances around 3.0 Å, [2.2](5,11)indeno[1,2-b]fluorenophane and its precursor [2.2](5,11)indeno[1,2-b]fluorene-6,12-dionophane exhibit remarkable transannular interactions, leading to their unusual electrochemical and photophysical properties. With the aid of femtosecond transient absorption spectroscopy, the transition from the monomeric excited state to the redshifted H-type dimeric state was first observed, correlating to the calculated excitonic energy splitting and the steady-state absorption spectra induced by charge-transfer-mediated superexchange interaction.

原文English
頁(從 - 到)10158-10162
頁數5
期刊Angewandte Chemie - International Edition
58
發行號30
DOIs
出版狀態Published - 2019 7月 22

All Science Journal Classification (ASJC) codes

  • 催化
  • 一般化學

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