Results 21 to 30 of about 14,125 (198)

Wide‐range color‐tunable afterglow emission by the modulation of triplet exciton transition processes based on buckybowl structure

Aggregate, 2023
Buckybowl structures as non‐uniform electrostatic potential distributions of polycyclic aromatic materials show a unique photoelectric performance. In this work, OTC was utilized for dynamic modulation of triplet exciton transition processes.
Yongfeng Zhang, Chenchen Xiong, Wenbo Wang, Wenbo Dai, Yue Ren, Junming Xia, Gengchen Li, Jianbing Shi, Bin Tong, Xiaoyan Zheng, Xiangfeng Shao, Zhengxu Cai, Yuping Dong   +12 more
doaj   +1 more source

Parallel triplet formation pathways in a singlet fission material

Nature Communications, 2022
The singlet fission mechanism is still not relatively well understood, except for polyacenes. Here, the authors demonstrate that in diketopyrrolopyrrole supramolecular assemblies, both singlet fission and intersystem crossing can simultaneously happen.
Nilabja Maity, Woojae Kim, Naitik A. Panjwani, Arup Kundu, Kanad Majumder, Pranav Kasetty, Divji Mishra, Robert Bittl, Jayashree Nagesh, Jyotishman Dasgupta, Andrew J. Musser, Satish Patil   +11 more
doaj   +1 more source

Intersystem Crossing in a Carbazole-Based Room Temperature Phosphorescent Luminophore Investigated by Non-Adiabatic Dynamics.

, 2023
The use of phosphorescent luminophore is highly beneficial in diverse high-technological and biological applications. Yet, because of the formally forbidden character of intersystem crossing, the use of heavy metals or atoms is usually necessary to ...
Pelin, Ulukan, Elise, Lognon, Saron, Catak, Antonio, Monari   +3 more
core   +1 more source

Elucidating complex triplet-state dynamics in the model system isopropylthioxanthone

iScience, 2022
Summary: We introduce techniques for probing the dynamics of triplet states. We employ these tools, along with conventional techniques, to develop a detailed understanding of a complex chemical system: a negative-tone, radical photoresist for multiphoton
Nikolaos Liaros, Sandra A. Gutierrez Razo, Matthew D. Thum, Hannah M. Ogden, Andrea N. Zeppuhar, Steven Wolf, Tommaso Baldacchini, Matthew J. Kelley, John S. Petersen, Daniel E. Falvey, Amy S. Mullin, John T. Fourkas   +11 more
doaj   +1 more source

Visualizing excited state dynamics of conjugated molecules trough femtosecond stimulated Raman scattering [PDF]

EPJ Web of Conferences, 2019
The reaction pathway in the photoexcited model compound 2-methyl-5-phenylthiophene has been unravelled by Femtosecond Stimulated Raman Scattering and quantum chemical calculations.
Giovanni Batignani, Emanuele Pontecorvo, Carino Ferrante, Massimiliano Aschi, Christopher G. Elles, Tullio Scopigno   +5 more
doaj   +1 more source

Don’t help them to bury the light. The interplay between intersystem crossing and hydrogen transfer in photoexcited curcumin revealed by state-hopping dynamics.

, 2021
Curcumin is a natural compound extracted from turmeric (curcuma longa), which has shown remarkable antiinflammatory, antibacterial, and possibly anticancert properties.
Antonio, Monari, Raul, Losantos, Andreea, Pasc   +2 more
core   +1 more source

Direct observation of structural dynamics upon photo-excitation in a spin crossover crystal with femtosecond electron diffraction [PDF]

EPJ Web of Conferences, 2019
Photoinduced spin transitions are studied by femtosecond electron diffraction to understand ultrafast structural dynamics associated with intersystem crossing.
Jiang Yifeng, Liu Lai Chung, Müller-Werkmeister Henrike M., Lu Cheng, Zhang Dongfang, Field Ryan L., Sarracini Antoine, Moriena Gustavo, Collet Eric, Miller R. J. Dwayne   +9 more
doaj   +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

Intersystem Crossing in Diplatinum Complexes

The Journal of Physical Chemistry A, 2016
Intersystem crossing (ISC) in solid [(C4H9)4N]4[Pt2(μ-P2O5(BF2)2)4], abbreviated Pt(pop-BF2), is remarkably slow for a third-row transition metal complex, ranging from τISC ≈ 0.9 ns at 310 K to τISC ≈ 29 ns below 100 K. A classical model based on Boltzmann population of one temperature-independent and two thermally activated pathways was previously ...
Lam, Yan Choi, Gray, Harry B., Winkler, Jay R.   +2 more
openaire   +3 more sources

Intersystem crossing in the exit channel

Nature Chemistry, 2018
Intersystem crossing plays an important role in photochemistry. It is understood to be efficient when heavy atoms are present due to strong spin-orbit coupling, or when strongly bound long-lived complexes are formed that increase the chance of finding the singlet-triplet intersection seam.
Hongwei Li, Alexander Kamasah, Spiridoula Matsika, Arthur G. Suits   +3 more
openaire   +3 more sources