Home / Articles / Stabilization of TADF emitters by suppressing charge-induced C--N bond cleavage

Stabilization of TADF emitters by suppressing charge-induced C--N bond cleavage

Nikita Olegovich Dubinets 1
Nikita Olegovich Dubinets
, 
Andrey Yuryevich Sosorev 1
Andrey Yuryevich Sosorev
10.71267/mencom.8036
Published 28 July 2026 , received 10 March 2026
Communication , Volume 36, Issue 5, 517-520
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Dubinets N. O., Sosorev A. Y. Stabilization of TADF emitters by suppressing charge-induced C--N bond cleavage // Mendeleev Communications. 2026. Vol. 36. No. 5. pp. 517-520.
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Dubinets N. O., Sosorev A. Y. Stabilization of TADF emitters by suppressing charge-induced C--N bond cleavage // Mendeleev Communications. 2026. Vol. 36. No. 5. pp. 517-520.
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TY - JOUR
DO - 10.71267/mencom.8036
UR - https://mendcomm.colab.ws/publications/10.71267/mencom.8036
TI - Stabilization of TADF emitters by suppressing charge-induced C--N bond cleavage
T2 - Mendeleev Communications
AU - Dubinets, Nikita Olegovich
AU - Sosorev, Andrey Yuryevich
PY - 2026
DA - 2026/07/28
PB - Mendeleev Communications
SP - 517-520
IS - 5
VL - 36
ER -
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@article{2026_Dubinets,
author = {Nikita Olegovich Dubinets and Andrey Yuryevich Sosorev},
title = {Stabilization of TADF emitters by suppressing charge-induced C--N bond cleavage},
journal = {Mendeleev Communications},
year = {2026},
volume = {36},
publisher = {Mendeleev Communications},
month = {Jul},
url = {https://mendcomm.colab.ws/publications/10.71267/mencom.8036},
number = {5},
pages = {517--520},
doi = {10.71267/mencom.8036}
}
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Dubinets, Nikita Olegovich, and Andrey Yuryevich Sosorev. “Stabilization of TADF emitters by suppressing charge-induced C--N bond cleavage.” Mendeleev Communications, vol. 36, no. 5, Jul. 2026, pp. 517-520. https://mendcomm.colab.ws/publications/10.71267/mencom.8036.
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Keywords

density functional theory
luminescence
organic electronics
organic light-emitting diodes
thermally activated delayed fluorescence

Abstract

DFT calculations of bond dissociation energies for donor--acceptor luminophores in thermally activated delayed fluorescence (TADF) emitters revealed the C--N single bond as the dominant structural weakness, which is strongly destabilized in the anionic state formed during charge

transport, leading to the low operational stability of blue and sky-blue TADF organic light-emitting diodes (OLEDs). An alternative molecular design strategy that eliminates the weakest bond while preserving the small singlet--triplet energy gap required for efficient TADF was proposed and promising new luminophores for stable blue TADF OLEDs were suggested.

Funders

Russian Science Foundation
25-73-10304
Ministry of Education and Science of the Russian Federation
FFSM-2025-0004

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