Results 21 to 30 of about 3,749 (233)

Ladder-like energy-relaying exciplex enables 100% internal quantum efficiency of white TADF-based diodes in a single emissive layer

Nature Communications, 2021
Realizing efficient white organic light-emitting diodes (WOLEDs) with a single thermally-activated delayed fluorescence (TADF) emissive layer remains a challenge.
Chunmiao Han, Ruiming Du, Hui Xu, Sanyang Han, Peng Ma, Jinkun Bian, Chunbo Duan, Ying Wei, Mingzhi Sun, Xiaogang Liu, Wei Huang   +10 more
doaj   +1 more source

Electron spin resonance resolves intermediate triplet states in delayed fluorescence

Nature Communications, 2021
Despite advances in the design of thermally activated delayed fluorescence (TADF) emitters for devices, the effect of spin interactions is not well understood.
Bluebell H. Drummond, Naoya Aizawa, Yadong Zhang, William K. Myers, Yao Xiong, Matthew W. Cooper, Stephen Barlow, Qinying Gu, Leah R. Weiss, Alexander J. Gillett, Dan Credgington, Yong-Jin Pu, Seth R. Marder, Emrys W. Evans   +13 more
doaj   +1 more source

Sensitized Fluorescence Organic Light-Emitting Diodes with Reduced Efficiency Roll-Off

Organic Materials, 2021
Thermally activated delayed fluorescence (TADF)-sensitized fluorescence is a promising strategy to maintain the advantage of TADF materials and fluorescent materials.
Zhiyi Li, Ruifang Wang, Yangyang Zeng, Xiangyu Dong, Guanhao Liu, Xiaoxiao Hu, Teng Gao, Honglei Gao, Yuanyuan Qin, Xiuxian Gu, Chun-Sing Lee, Jiguang Liu, Pengfei Wang, Ying Wang   +13 more
doaj   +1 more source

Comprehensive understanding of multiple resonance thermally activated delayed fluorescence through quantum chemistry calculations

Communications Chemistry, 2022
Molecules that exhibit multiple resonance thermally activated delayed fluorescence (MR-TADF) are highly efficient electroluminescent materials, but their emission mechanism is still not fully understood.
Katsuyuki Shizu, Hironori Kaji
doaj   +1 more source

Highly Efficient Mechanochromic Thermally Activated Delayed Fluorescence in the Deep Red to Near-Infrared in Copper(I) [2.2]Isoindolinophanyl-Carbene Carbazolates. [PDF]

Angew Chem Int Ed Engl
Electrophilic [2.2]isoindolinophanyl‐based carbene iPC has been employed as charge‐transfer acceptor ligand in a series of [Cu(iPC)(carbazolate)], which show mechanochromism and environment‐dependent luminescence due to intermolecular C─‐H‐π interactions.
Muthig AMT, Maity S, Prüfer A, Krieger J, Belyaev A, Weiß JB, Henke S, Hupp B, Ewald B, Pflaum J, Steffen A.   +10 more
europepmc   +3 more sources

Hot exciplexes in U-shaped TADF molecules with emission from locally excited states

Nature Communications, 2021
Molecular designs improving the performance of thermally activated delayed fluorescence (TADF) emitters are greatly desired for optoelectronic applications.
A. Lennart Schleper, Kenichi Goushi, Christoph Bannwarth, Bastian Haehnle, Philipp J. Welscher, Chihaya Adachi, Alexander J. C. Kuehne   +6 more
doaj   +1 more source

A novel class of photoinitiators with a thermally activated delayed fluorescence (TADF) property [PDF]

New Journal of Chemistry, 2018
Photoinitiators exhibiting efficient thermally activated delayed fluorescence (TADF) are investigated.
Bouzrati-Zerelli, Mariem, Guillaume, Noirbent, Goubard, Fabrice, Bui, Thanh-Tuan, Villotte, Segolène, Dietlin, Céline, Morlet-Savary, Fabrice, Gigmes, Didier, Fouassier, Jean Pierre, Dumur, Frédéric, Lalevee, Jacques   +10 more
openaire   +2 more sources

Fast Delayed Emission in New Pyridazine-Based Compounds

Frontiers in Chemistry, 2021
Three novel donor-acceptor molecules comprising the underexplored pyridazine (Pydz) acceptor moiety have been synthesized and their structural, electrochemical and photophysical properties thoroughly characterized.
Simonas Krotkus, Tomas Matulaitis, Stefan Diesing, Stefan Diesing, Graeme Copley, Emily Archer, Changmin Keum, David B. Cordes, Alexandra M. Z. Slawin, Malte C. Gather, Eli Zysman-Colman, Ifor D. W. Samuel   +11 more
doaj   +1 more source

Palladium Catalyzed C3-(sp2)-H Alkenylation of Pyrroles: A Direct Access to Novel Organic Thermally Activated Delayed Fluorescence (TADF) Materials

, 2023
A Pd (II)-catalyzed direct C3-(sp2)-H alkenylation of heteroarenes using benzothiazole as a directing group has been successfully achieved. A wide range of 2-N-alkylpyrroles undergo an oxidative coupling with a variety of acrylates to furnish highly ...
Anindita , Bhowmick, Abhijit, Chatterjee, Javed Y. , Shaikh, Debasish , Laha, Dr. Ramakrishna G., Bhat   +4 more
core   +1 more source

Promoting Reverse Intersystem Crossing in Thermally Activated Delayed Fluorescence via Heavy-Atom Effect

, 2022
Thermally activated delayed fluorescence (TADF) molecules are promising for realizing durable organic light-emitting diodes in all color regions. Fast reverse intersystem crossing (RISC) is a way of improving the device lifetime of TADF-based organic ...
Hironori, Kaji, Katsuyuki, Shizu, Ren, Yongxia   +2 more
core   +1 more source