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"Magnetic field dependent picosecond intersystem crossing. The role of molecular symmetry" P. Gilch, C. Musewald, M.E. Michel-BeyerleChem. Phys. Lett. 325,39-45 Abstract: The magnetic field effects on the picosecond photo-dynamics of two different nickel(II) centered tetrapyrroles dissolved in coordinating solvents are compared. These compounds exhibit fast intersystem crossing processes with multi-exponential kinetics which are altered by external magnetic fields of some teslas. The influence of molecular symmetry on the magnitude of the field effect is investigated and treated semi-quantitatively using a stochastic Liouville approach. Modelling of the effect allows to estimate the zero-field splitting of very short-lived triplet states. BMO authors (in alphabetic order): Peter Gilch  WWW-Version |