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

Pashazadeh, Ramin and Pander, Piotr and Bucinskas, Audrius and Skabara, Peter J. and Dias, Fernando B. and Grazulevicius, Juozas V. (2018) 'An iminodibenzyl–quinoxaline–iminodibenzyl scaffold as a mechanochromic and dual emitter : donor and bridge effects on optical properties.', Chemical communications., 54 (98). pp. 13857-13860.

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.

Item Type:Article
Full text:(AM) Accepted Manuscript
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Status:Peer-reviewed
Publisher Web site:https://doi.org/10.1039/C8CC06981F
Date accepted:19 November 2018
Date deposited:06 March 2019
Date of first online publication:23 November 2018
Date first made open access:19 November 2019

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