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Achieving Deep-Red TADF with Negative-Thermal Quenching in [Cu(N^N)(P^P)]⁺ Emitters Through a Perchlorination Strategy. / Petyuk, Maxim Yu; Sukhikh, Taisiya S.; Stass, Dmitri V. et al.

In: Advanced Optical Materials, 2026.

Research output: Contribution to journal › Article › peer-review

Harvard

Petyuk, MY, Sukhikh, TS, Stass, DV, Carignan, GM, Rakhmanova, MI, Doronina, EP, Sokolov, MN, Mostovich, EA, Bagryanskaya, IY, Li, J & Artem'ev, AV 2026, 'Achieving Deep-Red TADF with Negative-Thermal Quenching in [Cu(N^N)(P^P)]⁺ Emitters Through a Perchlorination Strategy', Advanced Optical Materials. https://doi.org/10.1002/adom.202502836

APA

Petyuk, M. Y., Sukhikh, T. S., Stass, D. V., Carignan, G. M., Rakhmanova, M. I., Doronina, E. P., Sokolov, M. N., Mostovich, E. A., Bagryanskaya, I. Y., Li, J., & Artem'ev, A. V. (2026). Achieving Deep-Red TADF with Negative-Thermal Quenching in [Cu(N^N)(P^P)]⁺ Emitters Through a Perchlorination Strategy. Advanced Optical Materials, [e02836]. https://doi.org/10.1002/adom.202502836

Vancouver

Petyuk MY, Sukhikh TS, Stass DV, Carignan GM, Rakhmanova MI, Doronina EP et al. Achieving Deep-Red TADF with Negative-Thermal Quenching in [Cu(N^N)(P^P)]⁺ Emitters Through a Perchlorination Strategy. Advanced Optical Materials. 2026;e02836. doi: 10.1002/adom.202502836

Author

Petyuk, Maxim Yu ; Sukhikh, Taisiya S. ; Stass, Dmitri V. et al. / Achieving Deep-Red TADF with Negative-Thermal Quenching in [Cu(N^N)(P^P)]⁺ Emitters Through a Perchlorination Strategy. In: Advanced Optical Materials. 2026.

BibTeX

@article{3e03f7470b3249a68c122ed2931eca00,
title = "Achieving Deep-Red TADF with Negative-Thermal Quenching in [Cu(N^N)(P^P)]⁺ Emitters Through a Perchlorination Strategy",
abstract = "A perchlorination strategy is introduced as a novel approach for designing Cu(I)-based deep-red TADF materials exhibiting large negative thermal quenching (NTQ). Replacing the 1,10-phenanthroline (phen) ligand in conventional [Cu(phen)(P^P)]⁺ complexes with octachloro-1,10-phenanthroline (phenCl8) unexpectedly induces a strong NTQ effect while simultaneously triggering a giant bathochromic shift in absorption, excitation, and emission. Whereas the parent complex [Cu(phen)(DPEPhos)]PF6 emits at λmax = 576 nm with nearly temperature-independent emission intensity in the 77–300K range (I300 K/I77 K = 1.1), its perchlorinated analog [Cu(phenCl8)(DPEPhos)]PF6 exhibits deep-red emission (λmax = 680 nm) and a remarkable NTQ effect with the impressively high ratio I300 K/I77 K of 12.3. Detailed investigations reveal that the NTQ behavior stems from perchlorination-induced spin-orbit coupling enhancement, which facilitates non-radiative T1 → S0 decays at low temperatures. Additionally, perchlorination boosts X-ray luminescence intensity, further highlighting its potential for optoelectronic applications.",
keywords = "Cu(I) complexes, deep-red thermally activated delayed fluorescence, negative thermal quenching, phosphorescence, zero-thermal quenching",
author = "Petyuk, {Maxim Yu} and Sukhikh, {Taisiya S.} and Stass, {Dmitri V.} and Carignan, {Gia M.} and Rakhmanova, {Mariana I.} and Doronina, {Evgeniya P.} and Sokolov, {Maxim N.} and Mostovich, {Evgeny A.} and Bagryanskaya, {Irina Yu} and Jing Li and Artem'ev, {Alexander V.}",
year = "2026",
doi = "10.1002/adom.202502836",
language = "English",
journal = "Advanced Optical Materials",
issn = "2195-1071",
publisher = "John Wiley & Sons Inc.",

}

RIS

TY - JOUR

T1 - Achieving Deep-Red TADF with Negative-Thermal Quenching in [Cu(N^N)(P^P)]⁺ Emitters Through a Perchlorination Strategy

AU - Petyuk, Maxim Yu

AU - Sukhikh, Taisiya S.

AU - Stass, Dmitri V.

AU - Carignan, Gia M.

AU - Rakhmanova, Mariana I.

AU - Doronina, Evgeniya P.

AU - Sokolov, Maxim N.

AU - Mostovich, Evgeny A.

AU - Bagryanskaya, Irina Yu

AU - Li, Jing

AU - Artem'ev, Alexander V.

PY - 2026

Y1 - 2026

N2 - A perchlorination strategy is introduced as a novel approach for designing Cu(I)-based deep-red TADF materials exhibiting large negative thermal quenching (NTQ). Replacing the 1,10-phenanthroline (phen) ligand in conventional [Cu(phen)(P^P)]⁺ complexes with octachloro-1,10-phenanthroline (phenCl8) unexpectedly induces a strong NTQ effect while simultaneously triggering a giant bathochromic shift in absorption, excitation, and emission. Whereas the parent complex [Cu(phen)(DPEPhos)]PF6 emits at λmax = 576 nm with nearly temperature-independent emission intensity in the 77–300K range (I300 K/I77 K = 1.1), its perchlorinated analog [Cu(phenCl8)(DPEPhos)]PF6 exhibits deep-red emission (λmax = 680 nm) and a remarkable NTQ effect with the impressively high ratio I300 K/I77 K of 12.3. Detailed investigations reveal that the NTQ behavior stems from perchlorination-induced spin-orbit coupling enhancement, which facilitates non-radiative T1 → S0 decays at low temperatures. Additionally, perchlorination boosts X-ray luminescence intensity, further highlighting its potential for optoelectronic applications.

AB - A perchlorination strategy is introduced as a novel approach for designing Cu(I)-based deep-red TADF materials exhibiting large negative thermal quenching (NTQ). Replacing the 1,10-phenanthroline (phen) ligand in conventional [Cu(phen)(P^P)]⁺ complexes with octachloro-1,10-phenanthroline (phenCl8) unexpectedly induces a strong NTQ effect while simultaneously triggering a giant bathochromic shift in absorption, excitation, and emission. Whereas the parent complex [Cu(phen)(DPEPhos)]PF6 emits at λmax = 576 nm with nearly temperature-independent emission intensity in the 77–300K range (I300 K/I77 K = 1.1), its perchlorinated analog [Cu(phenCl8)(DPEPhos)]PF6 exhibits deep-red emission (λmax = 680 nm) and a remarkable NTQ effect with the impressively high ratio I300 K/I77 K of 12.3. Detailed investigations reveal that the NTQ behavior stems from perchlorination-induced spin-orbit coupling enhancement, which facilitates non-radiative T1 → S0 decays at low temperatures. Additionally, perchlorination boosts X-ray luminescence intensity, further highlighting its potential for optoelectronic applications.

KW - Cu(I) complexes

KW - deep-red thermally activated delayed fluorescence

KW - negative thermal quenching

KW - phosphorescence

KW - zero-thermal quenching

UR - https://www.scopus.com/pages/publications/105026393673

UR - https://www.mendeley.com/catalogue/b9e2d033-d4b8-30ac-9038-511e0b20a873/

U2 - 10.1002/adom.202502836

DO - 10.1002/adom.202502836

M3 - Article

JO - Advanced Optical Materials

JF - Advanced Optical Materials

SN - 2195-1071

M1 - e02836

ER -

ID: 73867668