ChemRxiv
These are preliminary reports that have not been peer-reviewed. They should not be regarded as conclusive, guide clinical practice/health-related behavior, or be reported in news media as established information. For more information, please see our FAQs.
KA_Templated Draft_Chemrxiv.pdf (702.18 kB)
0/0

A Molecular Boron Cluster-Based Chromophore with Dual Emission

preprint
submitted on 23.02.2020 and posted on 25.02.2020 by Kierstyn P. Anderson, Mary A. Waddington, Gary J. Balaich, Julia M. Stauber, Justin R. Caram, Peter I. Djurovich, Alexander Spokoyny
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 product possesses dual emission upon excitation with UV light and exhibits fluorescence at 410 nm and phosphorescence at 503 nm, with Фtotal = 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.

Funding

CHE-1846849

DGE-1650604

History

Email Address of Submitting Author

spokoyny@chem.ucla.edu

Institution

University of California, Los Angeles

Country

USA

ORCID For Submitting Author

0000-0002-5683-6240

Declaration of Conflict of Interest

Authors declare no conflict of interests.

Exports

Read the published paper

in Dalton Transactions

Logo branding

Exports