Radical character quenches luminescence in the all-hydrocarbon radical benzoBDPA

Autor: Adrian R. Birge, Matthew J. Piper, Karl J. Painter, Graham T. Sazama
Jazyk: angličtina
Rok vydání: 2022
Předmět:
Zdroj: Results in Chemistry, Vol 4, Iss , Pp 100393- (2022)
Druh dokumentu: article
ISSN: 2211-7156
DOI: 10.1016/j.rechem.2022.100393
Popis: We have synthesized and characterized a benzannulated analog, bBDPA, of the well-known stable radical bis(diphenylene)phenylallyl (BDPA). Benzannulation gives rise to fluorescence in the closed-shell precursor molecule bBDPAH, but luminescence is quenched in the radical species. We detail the synthesis, characterization by absorption, emission, and EPR spectroscopy, and examine the molecular orbital landscape dictating the properties of the radical. We find that benzannulation alters the energy of the radical’s frontier molecular orbitals differently than in luminescent radicals brought about by incorporation of heteroatoms into their frameworks.
Databáze: Directory of Open Access Journals