Results 1 to 10 of about 9,358 (161)

Intersystem Crossing of 2-Methlypyrazine Studied by Femtosecond Photoelectron Imaging [PDF]

Molecules, 2022
2-methylpyrazine was excited to the high vibrational dynamics of the S1 state with 260 nm femtosecond laser light, and the evolution of the excited state was probed with 400 nm light. Because it was unstable, the S1 state decayed via intersystem crossing
Naipisai Wumaierjiang, Bumaliya Abulimiti, Fengzi Ling, Mei Xiang, Xulan Deng, Jie Wei, Bing Zhang   +6 more
doaj   +2 more sources

Development of an Organic Emitter Exhibiting Reverse Intersystem Crossing Faster than Intersystem Crossing

Angewandte Chemie - International Edition
AbstractIn thermally activated delayed fluorescence (TADF)‐based organic light‐emitting diodes (OLEDs), acceleration of reverse intersystem crossing (RISC) and suppression of intersystem crossing (ISC) are demanded to shorten a lifetime of triplet excitons. As a system realizing RISC faster than ISC, inverted singlet‐triplet excited states (iST) with a
Hironori Kaji
exaly   +5 more sources

Mechanism of Ultrafast Intersystem Crossing in 2‐Nitronaphthalene [PDF]

Chemistry - A European Journal, 2018
AbstractNitronaphthalene derivatives efficiently populate their electronically excited triplet states upon photoexcitation through ultrafast intersystem crossing (ISC). Despite having been studied extensively by time‐resolved spectroscopy, the reasons behind their ultrafast ISC remain unknown.
Leticia Gonzalez, Juan José Nogueira, Patrick Zobel   +2 more
exaly   +5 more sources

Bodipy Derivatives as Triplet Photosensitizers and the Related Intersystem Crossing Mechanisms

Frontiers in Chemistry, 2019
Recently varieties of Bodipy derivatives showing intersystem crossing (ISC) have been reported as triplet photosensitizers, and the application of these compounds in photocatalysis, photodynamic therapy (PDT), and photon upconversion are promising.
Kepeng Chen, Yu Dong, Xiaoyu Zhao, Xiaoyu Zhao, Muhammad Imran, Geliang Tang, Jianzhang Zhao, Jianzhang Zhao, Qingyun Liu   +8 more
doaj   +3 more sources

The Role of Aqueous Solvation on the Intersystem Crossing of Nitrophenols [PDF]

Journal of Chemical Theory and Computation
The photochemistry of nitrophenols is a source of smog as nitrous acid is formed from their photolysis. Nevertheless, computational studies of the photochemistry of these widespread toxic molecules are scarce. In this work, the initial photodeactivation of ortho-nitrophenol and para-nitrophenol is modeled, both in gas phase and in aqueous solution to ...
Vandaele, Eva, Mališ, Momir, Luber, Sandra   +2 more
openaire   +3 more sources

Dynamics of vibrationally coupled intersystem crossing in state-of-the-art organic optoelectronic materials [PDF]

Communications Chemistry
This work investigates intersystem crossing (ISC) induced by spin-orbit coupling (SOC) in state-of-the-art non-fullerene acceptors (NFAs). A quantum chemistry study analyzed SOC in 10 NFAs using the optimized geometry of the ground state (OGGS ...
J.P.A. Souza, L. Benatto, G. Candiotto, L. Wouk, M. Koehler   +4 more
doaj   +2 more sources

Facile synthesis of azines by carboxylic acid esters as catalyst and facilitation of intersystem crossing (ISC) in azines by azine chromophore [PDF]

Scientific Reports
Development of new organic synthetic methods fascinating the researchers which facilitating the increasing demands of the modern society, environmental friendly with high efficiency and low cost.
M. Sennappan, V. Srinivasa Murthy, Praveen B. Managutti, P Subhapriya, K Gurushantha, Praveen C Ramamurthy, B Hemavathi, K. S. Anantharaju, Aman Thakur   +8 more
doaj   +2 more sources

New viewpoints of magnetic-field influence on photocatalysis via 2-propanol oxidation

Catalysis Communications, 2023
Magnetic-field effect on heterogenous photocatalysis was investigated on Pt/TiO2 by photocatalytic oxidation of 2-propanol. Two-level factorial design of dissolved oxygen concentration (DO), temperature, and magnetic flux density was applied for the ...
Yen-Han Wang, Van-Han Dang, Hung Ji Huang, Jeffrey C.S. Wu   +3 more
doaj   +1 more source

Investigation of the spin-forbidden process in thymine [PDF]

Hemijska Industrija, 2012
The intersystem crossing rate from the lowest singlet to the lowest triplet state of thymine was studied by means of the ab initio methods. The rate was calculated employing the time-dependent approach based on the correlation function.
Etinski Mihajlo R.
doaj   +1 more source

Vibrational Coherence in the Metal–Metal-Bonded Excited State of Pt(II) Complexes

Inorganics, 2023
In the past decade, there have been significant advancements in the investigation of coherence-related phenomena in organic systems such as biological photosynthetic reaction centers.
Tengfei Yan, Qingyun Wan
doaj   +1 more source