Abstract
We present ultrafast emission studies of a new molecule, which undergoes a photoinduced H-atom transfer reaction in solution. We discuss the nature of the observed elementary fluorescence dynamics having time constant of 40–100 fs, ∼600 fs and 20 ps. These times due to in-plane and out-of-plane motions of the formed keto-type (K) phototautomer, strongly decrease its emission intensity having a lifetime of 20 ps. Fs-anisotropy emission decay supports the assignments.
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