Results 151 to 160 of about 28,761 (191)
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Nanomagnetic Control of Intersystem Crossing
The Journal of Physical Chemistry A, 2009A theory is presented for how magnetic nanostructures can catalyze intersystem crossing in molecular radical pairs. Magnetic field gradients near physically realistic nanostructures are strong enough to induce a relative reorientation of two electronic spins in
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Intersystem crossing in the helicenes
Chemical Physics Letters, 1975Abstract The rate constants of radiationless S1 → Tn and T1 → S0 intersystem crossing of six helicenes have been evaluated by combining emission lifetimes and quantum yields of fluorescence and triplet state formation. The data are compared to those of linear acenes.
Sapir, Michael, Vander Donckt, Emile
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Intersystem crossing in molecular dimers
Chemical Physics Letters, 1978Abstract Intersystem crossing in molecular pairs is examined in relation to the structure of the pair. Simple relationships are derived which differ from previously reported ones by the inclusion of the vibronic nature of intersystem crossing.
Michael K. Bowman, James R. Norris
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Comments on activated intersystem crossing
Chemical Physics Letters, 1972Abstract Parameters defining temperature-dependent and temperature-independent intersystem crossing from the fluorescent state of 1,2-benzanthracene are reported, and their significance is discussed in terms of multilevel crossing from vibrationally excited singlet states.
M.F. Thomaz +2 more
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Matrix elements for intersystem crossing
Chemical Physics Letters, 1975Abstract A new formulation of intersystem-crossing matrix elements is presented which includes correction for prompt scattering and avoids the Herzberg-Teller expansion for nonadiabatic coupling.
Willem Siebrand, Marek Z. Zgierski
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The intersystem crossings in glyoxal
Molecular Physics, 1976The mechanisms of the intersystem crossing processes of glyoxal have been investigated through the microwave induced delayed phosphorescence (MIDP) experiment, the measurements of the phosphorescence quantum yield and lifetimes, and numerical calculations of the electronic parts of the coupling matrix elements.
Nobuyuki Nishi +2 more
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Intersystem crossing in sulphur dioxide
Journal of the Chemical Society, Faraday Transactions 2, 1977Excitation spectra of the fluorescence of SO2 and of the SO2 photosensitised phosphorescence of biacetyl have been recorded between 250 and 325 nm, and the rates of decay of the fluorescence and the generation and decay of the biacetyl phosphorescence have been monitored following pulsed laser excitation at (295–300 nm).
Fakhruddin Ahmed +2 more
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Understanding and Controlling Intersystem Crossing in Molecules
Annual Review of Physical Chemistry, 2021This review article focuses on the understanding of intersystem crossing (ISC) in molecules. It addresses readers who are interested in the phenomenon of intercombination transitions between states of different electron spin multiplicities but are not familiar with relativistic quantum chemistry.
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Studies of intersystem crossing dynamics in acetylene
The Journal of Chemical Physics, 2007We report a new ab initio study of the acetylene T3 potential energy surface, which clarifies the nature of its energy minimum, and present computed equilibrium geometries and diabatic frequencies. This information enables the computation of harmonic vibrational overlap integrals of T3 vibrational levels with the S1 3ν3 state.
Ryan L, Thom +3 more
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Intersystem Crossing in Gaseous Molecules
The Journal of Chemical Physics, 1967The theory of electronic relaxation in the solid phase is discussed in terms of gaseous molecules. Two limits are examined—the ``small-molecule limit'' (α limit), where electronic relaxation cannot occur in the free molecule, and the ``big-molecule limit'' (ω limit), where electronic relaxation at a rate virtually identical with that in the solid can ...
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