Hot vibrational states in a high-performance multiple resonance emitter and the effect of excimer quenching on organic light-emitting diodes

K Stavrou, A Danos, T Hama… - … Applied Materials & …, 2021 - ACS Publications
The photophysics of multiple resonance thermally activated delayed fluorescence molecule
ν-DABNA is described. We show coupling of a 285 cm–1 stretching/scissoring vibrational …

Unexpected quasi‐axial conformer in thermally activated delayed fluorescence DMAC‐TRZ, pushing green OLEDs to blue

K Stavrou, LG Franca, T Böhmer… - Advanced Functional …, 2023 - Wiley Online Library
Hidden photophysics is elucidated in the very well‐known thermally activated delayed
fluorescence (TADF) emitter, DMAC‐TRZ. A molecule that, based on its structure, is …

Assessing intra-and inter-molecular charge transfer excitations in non-fullerene acceptors using electroabsorption spectroscopy

S Mahadevan, T Liu, SM Pratik, Y Li, HY Ho… - Nature …, 2024 - nature.com
Organic photovoltaic cells using Y6 non-fullerene acceptors have recently achieved high
efficiency, and it was suggested to be attributed to the charge-transfer (CT) nature of the …

Photophysics of TADF guest–host systems: introducing the idea of hosting potential

K Stavrou, LG Franca, AP Monkman - ACS applied electronic …, 2020 - ACS Publications
The thermally activated delayed fluorescence (TADF) donor–acceptor (D–A) molecule,
DMAC–TRZ, is used as a TADF emitter “probe” to distinguish the environmental effects of a …

Minimization of solid-state conformational disorder in donor–acceptor TADF compounds

T Serevičius, R Skaisgiris, J Dodonova… - Physical Chemistry …, 2020 - pubs.rsc.org
Thermally activated delayed fluorescence (TADF) compounds with a flexible donor–
acceptor structure suffer from conformational disorder in solid-state, which deteriorates their …

The effect of a heavy atom on the radiative pathways of an emitter with dual conformation, thermally-activated delayed fluorescence and room temperature …

D de Sa Pereira, DR Lee, NA Kukhta, KH Lee… - Journal of Materials …, 2019 - pubs.rsc.org
This study focuses on the photophysics of a donor–acceptor molecule with 2, 4, 6-triphenyl-
1, 3, 5-triazine and phenoselenazine acceptor and donor units. Selenium distinctively folds …

Resolving buried optoelectronic features in metal halide perovskites via modulation spectroscopy studies

E Amerling, KR Hansen… - Journal of Materials …, 2021 - pubs.rsc.org
As research on both bulk and low dimensional metal halide perovskites (MHPs) continues to
grow, the tools necessary to gain insights into their exotic and highly convoluted …

Rigid and planar π-conjugated molecules leading to long-lived intramolecular charge-transfer states exhibiting thermally activated delayed fluorescence

S Kuila, H Miranda-Salinas, J Eng, C Li… - Nature …, 2024 - nature.com
Intramolecular charge transfer (ICT) occurs when photoexcitation causes electron transfer
from an electron donor to an electron acceptor within the same molecule and is usually …

Exploiting trifluoromethyl substituents for tuning orbital character of singlet and triplet states to increase the rate of thermally activated delayed fluorescence

JS Ward, A Danos, P Stachelek, MA Fox… - Materials Chemistry …, 2020 - pubs.rsc.org
This work shows that trifluoromethyl (CF3) substituents can be used to increase the rate of
thermally activated delayed fluorescence (TADF) in conjugated organic molecules by tuning …

Fabrication of Flexible High‐Temperature Film Thermometers and Heat‐Resistant OLEDs Using Novel Hot Exciton Organic Fluorophores

X Jiang, Z Dong, X Miao, K Wang, F Yao… - Advanced Functional …, 2022 - Wiley Online Library
The development of organic thermosensitive fluorophores for use in heat‐resistant organic
light emitting diodes (OLEDs) and large‐area and flexible high‐temperature sensing …