Abstract
The stepwise internal conversions from B to Qy and to Qx states in free base tetraphenylporphyrin generate coherent nuclear wave packets in both Q states. The wave packets in each Q state are observed by highly time-resolved fluorescence, and they are quite distinct. Theory and experiment show that the observed vibrational wave packet motions involve out-of-plane vibration of the porphyrin ring that is strongly coupled to the internal conversions.
© 2014 Optical Society of America
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