An iminodibenzyl–quinoxaline–iminodibenzyl scaffold as a mechanochromic and dual emitter: donor and bridge effects on optical properties

Pashazadeh, Ramin; Pander, Piotr; Bucinskas, Audrius; Skabara, Peter J.; Dias, Fernando B.; Grazulevicius, Juozas V.

doi:10.1039/c8cc06981f

An iminodibenzyl–quinoxaline–iminodibenzyl scaffold as a mechanochromic and dual emitter: donor and bridge effects on optical properties

Pashazadeh, Ramin; Pander, Piotr; Bucinskas, Audrius; Skabara, Peter J.; Dias, Fernando B.; Grazulevicius, Juozas V.

Authors

Ramin Pashazadeh

Piotr Pander

Audrius Bucinskas

Peter J. Skabara

Dr Fernando Dias f.m.b.dias@durham.ac.uk
Associate Professor

Juozas V. Grazulevicius

Abstract

The influence of phenyl linkage and donor strength on the photophysical properties of new derivatives of quinoxaline-containing iminodibenzyl and iminostilbene moieties is studied. The donor–acceptor derivatives showed dual thermally activated delayed fluorescence (TADF) and room temperature phosphorescence (RTP) despite a large energy gap between the excited singlet and triplet states (ca. 0.5 eV). This extremely rare observation is explained by the twisted and rigidified structure of the iminodibenzyl moiety.

Citation

Pashazadeh, R., Pander, P., Bucinskas, A., Skabara, P. J., Dias, F. B., & Grazulevicius, J. V. (2018). An iminodibenzyl–quinoxaline–iminodibenzyl scaffold as a mechanochromic and dual emitter: donor and bridge effects on optical properties. Chemical Communications, 54(98), 13857-13860. https://doi.org/10.1039/c8cc06981f

Journal Article Type	Article
Acceptance Date	Nov 19, 2018
Online Publication Date	Nov 23, 2018
Publication Date	Dec 21, 2018
Deposit Date	Nov 26, 2018
Publicly Available Date	Nov 19, 2019
Journal	Chemical Communications
Print ISSN	1359-7345
Electronic ISSN	1364-548X
Publisher	Royal Society of Chemistry
Peer Reviewed	Peer Reviewed
Volume	54
Issue	98
Pages	13857-13860
DOI	https://doi.org/10.1039/c8cc06981f