Results 61 to 70 of about 13,406 (265)

Thermally Activated Delayed Fluorescence in Phase‐Separated Nanostructures

Advanced Functional Materials, EarlyView.
A supramolecular, phase‐separation driven strategy yields charge transfer (CT) complexes from alternating electron‐deficient pyromellitic diimide and electron‐rich 4,5‐dibromoveratrole. The resulting CT complexes self‐assemble into lamellar nanosheets with nanometer‐sized domains that exhibit thermally activated delayed fluorescence (TADF) at room ...
Bart W.L. van den Bersselaar, Giovanni M. Beneventi, Philip M. Greißel, Lukas A. Mai, Stefan J. D. Maessen, Bas F.M. de Waal, E.W. Meijer, Dirk M. Guldi, Ghislaine Vantomme   +8 more
wiley   +1 more source

Thermally Activated Delayed Fluorescence Materials Based on Homoconjugation Effect of Donor–Acceptor Triptycenes [PDF]

, 2015
Donor–acceptor triptycences, TPA-QNX(CN)2 and TPA-PRZ(CN)2, were synthesized and their emissive properties were studied. They exhibited a blue-green fluorescence with emission lifetimes on the order of a microsecond in cyclohexane at room temperature ...
Baldo, Marc A, Chae, Hyun Sik, Kawasumi, Katsuaki, Swager, Timothy M, Van Voorhis, Troy, Wu, Tony C, Zhu, Tianyu   +6 more
core   +3 more sources

Heptazine‐Assisted Multi‐Resonance TADF Emitters With Fast Reverse Intersystem Crossing for Efficient Solution‐Processed OLEDs

Advanced Materials, EarlyView.
Heptazine‐assisted MR‐TADF emitters enable narrowband yellow emission with high efficiency at high luminance in solution‐processed OLEDs. In doped films, HAP‐3CzBN achieves a record‐fast kRISC of 1.19 × 106 s−1. The optimized HAP‐3CzBN devices deliver 15.5% EQEmax with negligible roll‐off at 1000 cd m−2, 11.2% at 10,000 cd m−2, and a benchmark 20.3 ...
Changfeng Si, Katrina Bergmann, Kunping Guo, Gert‐Jan A. H. Wetzelaer, Paul W. M. Blom, Zachary M. Hudson   +5 more
wiley   +1 more source

Recent Advances in Metal-TADF Emitters and Their Application in Organic Light-Emitting Diodes

Frontiers in Chemistry, 2020
In this contribution, recent advances in new classes of efficient metal-TADF complexes, especially those of Au(I), Au(III), and W(VI), and their application in OLEDs are reviewed.
Wai-Pong To, Gang Cheng, Gang Cheng, Glenna So Ming Tong, Dongling Zhou, Chi-Ming Che, Chi-Ming Che   +6 more
doaj   +1 more source

Luminescent zinc(ii) and copper( i) complexes for high-performance solution-processed monochromic and white organic light-emitting devices [PDF]

, 2015
published_or_final_versio
Chang, X, Che, CM, Chen, Y, Cheng, G, Guan, X, Kwok, CC, Kwok, WM, Ma, C, So, KM, To, WP   +9 more
core   +1 more source

Role of the Recombination Zone in Organic Light‐Emitting Devices

Advanced Materials, EarlyView.
This review summarizes the critical role of the recombination zone in organic light‐emitting diodes (OLEDs). We highlight that broadening the recombination zone in OLEDs based on emissive layers with balanced charge transport and high photoluminescence quantum yields provides a promising route toward achieving both long operational lifetime and high ...
Yungui Li, Karl Leo
wiley   +1 more source

Revealing the spin–vibronic coupling mechanism of thermally activated delayed fluorescence

Nature Communications, 2016
Knowing the photophysics of thermally-activated delayed fluorescence (TADF) is crucial when designing organic light emitting diodes. Here the authors show that spin orbit coupling in TADF materials is described by a second order vibronic coupling ...
Marc K. Etherington, Jamie Gibson, Heather F. Higginbotham, Thomas J. Penfold, Andrew P. Monkman   +4 more
doaj   +1 more source

Hinged and Wide: A New P^P Ligand for Emissive [Cu(P^P)(N^N)][PF₆] Complexes

Molecules, 2019
Heteroleptic [Cu(BIPHEP)(N^N)][PF6] complexes (BIPHEP = 1,1′-biphenyl-2,2′-diylbis(diphenylphosphane)), in which N^N is 2,2′-bipyridine (bpy), 6-methyl-2,2′-bipyridine (6-Mebpy), 6-ethyl-2,2′-bipyridine (6-Etbpy), or 5,5 ...
Sarah Keller, Matthias Bantle, Alessandro Prescimone, Edwin C. Constable, Catherine E. Housecroft   +4 more
doaj   +1 more source

Naphthalimide-phenothiazine dyads: effect of conformational flexibility and matching of the energy of the charge-transfer state and the localized triplet excited state on the thermally activated delayed fluorescence

Beilstein Journal of Organic Chemistry, 2022
In order to investigate the joint influence of the conformation flexibility and the matching of the energies of the charge-transfer (CT) and the localized triplet excited (3LE) states on the thermally activated delayed fluorescence (TADF) in electron ...
Kaiyue Ye, Liyuan Cao, Davita M. E. van Raamsdonk, Zhijia Wang, Jianzhang Zhao, Daniel Escudero, Denis Jacquemin   +6 more
doaj   +1 more source

Narrowband Deep-Blue Multi-Resonance Induced Thermally Activated Delayed Fluorescence: Insights from the Theoretical Molecular Design

Molecules, 2022
Multi-resonance thermal activated delayed fluorescence (MR-TADF) has been promising with large oscillator strength and narrow full width at half maxima of luminescence, overcoming the compromise of emission intensity and energy criteria of traditional ...
Yuting Wu, Yanan Zhu, Zewei Zhang, Chongguang Zhao, Junpeng He, Chaoyi Yan, Hong Meng   +6 more
doaj   +1 more source