Ultrafast electronic relaxation of excited state vitamin B12 in the gas phase
Niloufar Shafizadeh, Lionel Poisson and Benoît Soep logo_tutelle logo_tutelle 

Cyanocobalamin or vitamin B12 (C63H88CoN14O14P).

The time evolution of electronically excited vitamin B12 (cyanocobalamin) has been observed for the first time in the gas phase. It reveals an ultrafast decay to a state corresponding to metal excitation. This decay is interpreted as resulting from a ring to metal electron transfer. This opens the observation of the excited state of other complex biomimetic systems in the gas phase, the key to the characterisation of their complex evolution through excited electronic states.

 

Chem. Phys. (2007)

 

Maj : 09/01/2009 (955)

 

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