Multicolor Luminescence Switching and Controllable Thermally Activated Delayed Fluorescence Turn on/Turn off in Carbazole–Quinoxaline–Carbazole Triads

Pashazadeh, Ramin; Pander, Piotr; Lazauskas, Algirdas; Dias, Fernando B.; Grazulevicius, Juozas V.

Abstract

We report a series of thermally activated delayed fluorescence (TADF) molecules with mechanochromic luminescence properties and reversible TADF turn on/off properties in solid state that are induced by the transition between amorphous and crystalline states. Additionally, multicolor altering through external stimulus is demonstrated. All of the studied compounds exhibited recovery of the initial states associated with narrower emission spectra. TADF organic light-emitting diodes fabricated by solution processing rendered high external quantum efficiency up to 10.9% and luminance of 16 760 cd m–2.

Citation

Pashazadeh, R., Pander, P., Lazauskas, A., Dias, F. B., & Grazulevicius, J. V. (2018). Multicolor Luminescence Switching and Controllable Thermally Activated Delayed Fluorescence Turn on/Turn off in Carbazole–Quinoxaline–Carbazole Triads. Journal of Physical Chemistry Letters, 9(5), 1172-1177. https://doi.org/10.1021/acs.jpclett.8b00136

• Journal Article Type: Article
• Acceptance Date: Feb 18, 2018
• Online Publication Date: Feb 21, 2018
• Publication Date: Mar 1, 2018
• Deposit Date: Mar 7, 2018
• Publicly Available Date: Feb 19, 2019
• Journal: Journal of Physical Chemistry Letters
• Electronic ISSN: 1948-7185
• Publisher: American Chemical Society
• Peer Reviewed: Peer Reviewed
• Volume: 9
• Issue: 5
• Pages: 1172-1177
• DOI: https://doi.org/10.1021/acs.jpclett.8b00136
• Public URL: https://durham-repository.worktribe.com/output/1338281