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Issue 45, 2020
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A molecular boron cluster-based chromophore with dual emission

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Abstract

Bromination of the luminescent borane, anti-B18H22, via electrophilic substitution using AlCl3 and Br2, yields the monosubstituted derivative 4-Br-anti-B18H21 as an air-stable crystalline solid. In contrast to the unsubstituted parent compound, 4-Br-anti-B18H21 possesses dual emission upon excitation with UV light and exhibits fluorescence at 410 nm and phosphorescence at 503 nm, with Φtotal = 0.07 in oxygen-free cyclohexane. Increased oxygen content in cyclohexane solution quenches the phosphorescence signal. The fluorescent signal intensity remains unaffected by oxygen, suggesting that this molecule could be used as a ratiometric oxygen probe.

Graphical abstract: A molecular boron cluster-based chromophore with dual emission

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Supplementary files

Article information


Submitted
05 Mar 2020
Accepted
04 Apr 2020
First published
08 Apr 2020

Dalton Trans., 2020,49, 16245-16251
Article type
Paper
Author version available

A molecular boron cluster-based chromophore with dual emission

K. P. Anderson, M. A. Waddington, G. J. Balaich, J. M. Stauber, N. A. Bernier, J. R. Caram, P. I. Djurovich and A. M. Spokoyny, Dalton Trans., 2020, 49, 16245
DOI: 10.1039/D0DT00826E

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