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A Quantum Control Spectroscopy Approach by Direct UV Femtosecond Pulse Shaping

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3 Author(s)
Möhring, J. ; Inst. fur Phys. Chem., Ruprecht Karls Univ. Heidelberg, Heidelberg, Germany ; Buckup, T. ; Motzkus, M.

A quantum control spectroscopy (QCS) approach using directly shaped UV excitation pulse is demonstrated. Ultrafast tailored pulses in the region of 310-335 nm are combined with transient absorption to investigate reactive pathways in the excited state of (2,2'-bipyridyl)-3,3'-diol BP(OH)2. In particular, we apply QCS in the disentanglement of the competing excited-state intramolecular proton-transfer (ESIPT) channels of BP(OH)2. Our results challenge parallel reactive pathways in the excited state and suggest a newer model based on an extremely fast sequential double ESIPT process.

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Selected Topics in Quantum Electronics, IEEE Journal of  (Volume:18 ,  Issue: 1 )