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9‐Borabicyclononane Bipyridyl Complexes: Synthesis, Luminescence, and Electronic Characterization
Author(s) -
Chrzanowski Matthew,
Collins Stephanie,
Zeller Matthias,
Gray Thomas G.
Publication year - 2020
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.202000557
Subject(s) - chemistry , chelation , redox , electrochemistry , luminescence , phenanthroline , fluorescence , density functional theory , combinatorial chemistry , photochemistry , inorganic chemistry , computational chemistry , electrode , physics , optoelectronics , quantum mechanics
This work presents the use of organoboron compounds as anolytes in redox flow batteries. Through the study of their structural, electrochemical, and photophysical properties, four bipyridyl boronium salts show potential for application in such batteries. The compounds were synthesized in moderate to high yields by previously published methods. We find when using chelating bipyridyl‐based substituents, the complexes undergo two reversible reductions; however, when switching to phenanthroline‐based substituents, the reduction events are no longer reversible. Density‐functional theory calculations indicate that the chelating nitrogen heterocycle is the locus of reduction and fluorescence.