Nanosecond Time-resolved Infrared Spectra and Structure of the Charge-transfer State of 9,9 '-Bianthryl in Acetonitrile

Asami Nobuyuki, Sohshi Yabumoto, Shinsuke Shigeto, Takaya Tomohisa, Koichi Iwata

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Abstract

Nanosecond time-resolved infrared spectra of photoexcited 9,9'-bianthryl (BA) and its deuterated derivative (BA-d(18)) were recorded in acetonitrile-d(3) and cyclohexane-d(12). The charge-transfer (CT) bands observed at the 1200-1400 cm(-1) region are contributed mostly by the intra- and inter-ring CC stretch vibrations. The intrinsic frequency of the inter-ring CC stretch falls within the 1200-1400 cm(-1) region, which is consistent more with a twisted structure than with a fully conjugated planar structure of the CT state.
Original languageEnglish
Pages (from-to)654-656
Number of pages13
JournalChemistry Letters
Volume41
Issue number6
DOIs
StatePublished - 5 Jun 2012

Keywords

  • ELECTRON-TRANSFER; TRANSIENT-ABSORPTION; RADICAL CATIONS; IONIC LIQUIDS; FREE JET; 9,9-BIANTHRYL; FLUORESCENCE; SPECTROSCOPY; ANTHRACENE; DYNAMICS

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