Results 61 to 70 of about 14,125 (198)

Aggregation‐enhanced direct S0–Tn transitions and room‐temperature phosphorescence in gold(I)‐complex single crystals

Aggregate, 2022
The design of efficient aggregation‐induced emission materials requires an improved understanding of photophysical processes in aggregated materials.
Akihiro Ando, Kazuhisa Ozaki, Urara Shiina, Eikichi Nagao, Kyohei Hisano, Kenji Kamada, Osamu Tsutsumi   +6 more
doaj   +1 more source

Experimental and Computational Analysis of Para-Hydroxy Methylcinnamate following Photoexcitation

Molecules, 2021
Para-hydroxy methylcinnamate is part of the cinnamate family of molecules. Experimental and computational studies have suggested conflicting non-radiative decay routes after photoexcitation to its S1(ππ*) state.
Jack Dalton, Gareth W. Richings, Jack M. Woolley, Temitope T. Abiola, Scott Habershon, Vasilios G. Stavros   +5 more
doaj   +1 more source

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

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

Accurate Spin-Orbit Coupling and Intersystem Crossing by Relativistic Mixed-Reference Spin-Flip (MRSF)-TDDFT

, 2022
Relativistic MRSF-TDDFT is developed considering the spin-orbit coupling (SOC) within the mean-field approximation. The resulting SOC-MRSF faithfully reproduces the experiments with very high accuracy, which is also consistent with the values by four ...
Cheol-Ho, Choi, Tao, Zeng, Seunghoon, Lee, Woojin, Park, Konstantin, Komarov   +4 more
core   +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

Dissipation and dynamics in ultrafast intersystem crossings

The Journal of Chemical Physics, 2020
The effects of dynamics and dissipation on ultrafast intersystem crossings are studied for a dissipative two-level system coupled to a local vibronic mode. A method of amplitude damping of the wave packet is presented that accounts better for the position of the wave packet and avoids spurious transitions between potential wells.
openaire   +3 more sources

Ultrafast Intersystem Crossing Dynamics of 6‑Selenoguanine in Water

, 2022
Rationalizing the photochemistry of nucleobases where an oxygen is replaced by a heavier atom is essential for applications that exploit near-unity triplet quantum yields.
Sylvio Canuto (1295904), Danillo Valverde (9254035), Antonio Carlos Borin (1753099), Sebastian Mai (1356060), Leticia González (1268976)   +4 more
core   +1 more source