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Ionic Photodissociation of Polyenes via a Highly Polarized Singlet Excited State
Reddy, A. Mahipal,Rao, V. Jayathirtha
, p. 6727 - 6731 (2007/10/02)
Several polyene acetates and polyene methyl ether were prepared.Upon direct excitation these polyenes undergo ionic photodissociation from their singlet excited states.Triplet-sensitization experiments on these polyenes revealed that the ionic photodissociation process is restricted to singlet excited states.The rationale put forward is that the polyene chromophore undergoes charge separation/polarization in the singlet excited state, which leads to ionic photodissociation.
