Feskov, Serguei V. published the artcileMagnetic field effect on ion pair dynamics upon bimolecular photoinduced electron transfer in solution, Formula: C8H4N2, the main research area is magnetic field ion pair dynamics bimol photoinduced electron transfer.
The dynamics of the ion pairs produced upon fluorescence quenching of the electron donor 9,10-dimethylanthracene (DMeA) by phthalonitrile were studied in MeCN and THF using transient absorption spectroscopy. Charge recombination to both the neutral ground state and the triplet excited state of DMeA is observed in both solvents. The relative efficiency of the triplet recombination pathway decreases substantially in the presence of an external magnetic field. These results were analyzed theor. within the differential encounter theory, with the spin conversion of the geminate ion pairs described as a coherent process driven by the hyperfine interaction. The early temporal evolution of ion pair and triplet state populations with and without magnetic field could be well reproduced in MeCN, but not in THF where fluorescence quenching involves the formation of an exciplex. A description of the spin conversion in terms of rates, i.e., incoherent spin transitions, leads to an overestimation of the magnetic field effect. (c) 2019 American Institute of Physics.
Journal of Chemical Physics published new progress about Exciplex. 91-15-6 belongs to class nitriles-buliding-blocks, name is Phthalonitrile, and the molecular formula is C8H4N2, Formula: C8H4N2.
Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts