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

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)10158-10162
Number of pages5
JournalAngewandte Chemie - International Edition
Volume58
Issue number30
DOIs
Publication statusPublished - 2019 Jul 22

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Chemistry(all)

Fingerprint Dive into the research topics of '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'. Together they form a unique fingerprint.

  • Cite this