Results 51 to 60 of about 28,603 (262)

A Review of Benzophenone-Based Derivatives for Organic Light-Emitting Diodes

Nanomaterials
Organic light-emitting diodes (OLEDs) have garnered considerable attention in academic and industrial circles due to their potential applications in flat-panel displays and solid-state lighting technologies, leveraging the advantages offered by organic ...
Dovydas Blazevicius, Saulius Grigalevicius   +1 more
doaj   +1 more source

Selective manipulation of electronically excited states through strong light–matter interactions

Nature Communications, 2018
Manipulating energy levels in molecules could allow applications such as improving organic LEDs. Here, the authors show evidence that reversed intersystem crossing can be enhanced in Erythrosine B coupled to a cavity by selectively manipulating the ...
Kati Stranius, Manuel Hertzog, Karl Börjesson   +2 more
doaj   +1 more source

An Optical Power Limiting and Ultrafast Photophysics Investigation of a Series of Multi-Branched Heavy Atom Substituted Fluorene Molecules

Inorganics, 2019
A common molecular design paradigm for optical power limiting (OPL) applications is to introduce heavy atoms that promote intersystem crossing and triplet excited states.
Hampus Lundén, Delphine Pitrat, Jean-Christophe Mulatier, Cyrille Monnereau, Iulia Minda, Adrien Liotta, Pavel Chábera, Didrik K. Hopen, Cesar Lopes, Stéphane Parola, Tönu Pullerits, Chantal Andraud, Mikael Lindgren   +12 more
doaj   +1 more source

Harnessing the Orientation of Columnar Discotic Liquid Crystals for Narrowband Blue Emission with Enhanced Out‐Coupling Efficiency Toward Improvement of SP‐OLEDs Performance

Advanced Functional Materials, EarlyView.
Solution‐processed OLEDs containing discotic liquid‐crystalline MR‐TADF emitters are reported. Supramolecular self‐assembly induces homeotropic columnar alignment, enforcing preferential horizontal orientation of the emitter transition dipole moment in spin‐coated films, which leads to an enhancement in the device light outcoupling efficiency while ...
Joydip De, Abhishek Kumar Gupta, Džiugas Litvinas, Francisco Tenopala‐Carmona, Matthias Lehmann, Malte C. Gather, Eli Zysman‐Colman   +6 more
wiley   +1 more source

High Efficiency Red and White Organic Light Emitting Diodes based on Exciplex Host

Taiyuan Ligong Daxue xuebao, 2022
High efficiency monochrome red and white OLEDs were realized through the control of dopant concentration by employing the exciplex mCP:PO-T2T as host. The red OLED based on exciplex host achieved the maximum external quantum efficiency (EQE) of 21%, a 44%
Chao WANG, Xiangfeng LI, Zemei LIU, Bo ZHAO   +3 more
doaj   +1 more source

Bayesian molecular optimization for accelerating reverse intersystem crossing. [PDF]

Chem Sci
Spin conversion in molecular excited states is crucial for the development of next-generation optoelectronic devices. However, optimizing molecular structures for rapid spin conversion has relied on time-consuming experimental trial-and-error, which limits the elucidation of the structure-property relationships.
Won T, Aizawa N, Harabuchi Y, Kurihara R, Suzuki M, Maeda S, Pu YJ, Nakayama KI.   +7 more
europepmc   +3 more sources

Performance of trajectory surface hopping method in the treatment of ultrafast intersystem crossing dynamics

, 2019
We carried out extensive studies to examine the performance of the fewest-switches surface hopping method in the description of the ultrafast intersystem crossing dynamic of various singlet-triplet (S-T) models by comparison with the results of the exact
Hu, Deping, Lan, Zhenggang, Peng, Jiawei, Xie, Yu   +3 more
core   +1 more source

Towards Prediction of Non-Radiative Decay Pathways in Organic Compounds I: The Case of Naphthalene Quantum Yields [PDF]

, 2019
Many emerging technologies depend on human’s ability to control and manipulate the excited-state properties of molecular systems. These technologies include fluorescent labeling in biomedical imaging, light harvesting in photovoltaics, and ...
Kohn, Alexander, Lin, Zhou, Van Voorhis, Troy   +2 more
core   +3 more sources

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

An inverted singlet-triplet excited state in a pentaazaphenalene derivative (5AP-N(C12)2)

Applied Physics Express
The characteristic of inverted singlet-triplet excited states, in which the lowest singlet excited state (S _1 ) is lower than the lowest triplet state (T _1 ) in energy, was observed in a dialkylamine-substituted pentaazaphenalene derivative, 5AP-N(C12)
Yu Kusakabe, Katsuyuki Shizu, Hiroyuki Tanaka, Kazuo Tanaka, Hironori Kaji   +4 more
doaj   +1 more source