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Electron-donating abilities and luminescence properties of tolane-substituted nido-carboranes

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Abstract

The luminescence properties of nido-carborane (7,8-dicarba-nido-carborate anion)-substituted tolane derivatives were investigated. It was shown that the nido-carborane unit acted as an electron-donating group in all derivatives, and their emission colors can be tuned by the substituents at the tolane moiety. According to theoretical investigation, it was proposed that frontier orbitals were distinctly separated by the twisted structure of the methyl substituents at the nido-carborane unit. Thus, in the absorption spectra, drastic changes were obtained because the HOMO–LUMO transition was forbidden. These structural and electrical substituent effects should serve as good guidelines for designing optoelectronic materials based on nido-carboranes.

Graphical abstract: Electron-donating abilities and luminescence properties of tolane-substituted nido-carboranes

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Publication details

The article was received on 07 Jul 2017, accepted on 03 Aug 2017 and first published on 18 Aug 2017


Article type: Paper
DOI: 10.1039/C7NJ02438J
Citation: New J. Chem., 2017, Advance Article
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    Electron-donating abilities and luminescence properties of tolane-substituted nido-carboranes

    K. Nishino, Y. Morisaki, K. Tanaka and Y. Chujo, New J. Chem., 2017, Advance Article , DOI: 10.1039/C7NJ02438J

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