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Deciphering intersystem crossing and energy transfer mechanisms in a nonacoordinated ternary europium(iii) complex: a combined spectroscopic and theoretical study. [PDF]

RSC Adv
Al-Sharji H, Ilmi R, Oliveira WF, Al-Saadi BS, Dutra JDL, Abou-Zied OK, Raithby PR, Khan MS.   +7 more
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Experimentally Observed Reverse Intersystem Crossing‐Boosted Lasing

Angewandte Chemie, 2020
AbstractThermally activated delayed‐fluorescent (TADF) materials are anticipated to overcome triplet‐related losses towards electrically driven organic lasers. Thus far, contributions from triplets to lasing have not yet been experimentally demonstrated owing to the limited knowledge about the excited‐state processes.
Zhonghao Zhou, Chan Qiao, Kang Wang, Lu Wang, Jie Liang, Qian Peng, Zhiyou Wei, Haiyun Dong, Chuang Zhang, Zhigang Shuai, Yongli Yan, Yong Sheng Zhao   +11 more
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Intersystem and Reverse-Intersystem Crossings in Organic Light-Emitting Diodes

The Journal of Physical Chemistry Letters, 2022
Using the first-order perturbation theory and exciton-spin-orbit-photon-molecular-vibration-interaction (ESOPMVI) operator, the rates of reverse intersystem crossing (RISC) and thermally activated delayed fluorescence (TADF) are derived. It is shown that the pre-exponential factor of the rate of TADF is not an absolute constant as is commonly assumed ...
Jai Singh, U. Shakeel, David Ompong, Kiran Sreedhar Ram   +3 more
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Enhanced intersystem crossing in carbonylpyrenes

Phys. Chem. Chem. Phys., 2017
Photoexcited state relaxation of carbonylpyrenes displays ultrafast intersystem crossing to generate near-unity triplet formation.
Shinaj K. Rajagopal, Ajith R. Mallia, Mahesh Hariharan   +2 more
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Intersystem crossing in methylene

Chemical Physics Letters, 1970
Abstract Singlet-triplet intersystem crossing in methylene is considered as a two step process: (a) reversible intramolecular equilibration of singlet and triplet species, and (b) collisional deactivation of the vibrationally excited triplet state. The overall process is predicted to be bimolecular, in agreement with the experimental observation of ...
Tai Yup Chang, Harold Basch
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Intersystem crossing in anthracene

Chemical Physics Letters, 1970
Abstract A temperature dependent intersystem crossing rate is observed below ca. 170°K for anthracene in methyl tetrahydrofuran. From the temperature dependence of the 0,0 bands in absorption and emission, this is interpreted as being due to slow lattice relaxation in the excited singlet state.
T.F. Hunter, R.F. Wyatt
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Rapid intersystem crossings in anti bimanes

Physical Chemistry Chemical Physics, 2016
First principles electronic structure calculations show that T2 in anti bimanes are effective conduits for very fast intersystem crossings from S1 into the triplet manifold.
T S, Chwee, G S, Lim, Z C, Wong, M B, Sullivan, W Y, Fan   +4 more
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Intersystem crossing in methylene

Chemical Physics Letters, 1969
Abstract The rate of singlet-triplet intersystem crossing in methylene is a second-order process requiring collisional perturbation to couple with the triplet manifold so that the transition can occur. The efficiency of the process increases with increasing mass of the collision partner, but nevertheless is relatively slow, requiring in excess of 200
Thomas W. Eder, Robert W. Carr, John W. Koenst   +2 more
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Unexpected intersystem crossing

Nature Chemistry, 2019
Intersystem crossing plays a role in the mechanism of many reactive collisions between atomic species and organic molecules, and has been generally observed when the reactants are still approaching one another. Now, intersystem crossing has been observed to also occur after their initial interaction.
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Intersystem crossing of triplet formaldehyde

Chemical Physics Letters, 1974
Abstract Triplet benzene (3B1U sensitized decomposition of H2CO in the gas phase gives an appreciable yield of “molecules” H2 and CO. This evidence supports that T1↭S0 intersystem crossing in formaldehyde is an efficient and important process. The implication of this is that S1↭T1 intersystem crossing could be important, more so than recognized ...
Richard G. Miller, Edward K.C. Lee
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