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Durham University

Department of Physics

Staff profile

Publication details for Associate Professor Fernando Dias

Pashazadeh, Ramin, Pander, Piotr, Bucinskas, Audrius, Skabara, Peter J., Dias, Fernando B. & 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): 13857-13860.

Author(s) from Durham

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.