scholarly journals Rabi-like vibrational coherence transfer in a hydrogen-bonded charge transfer material

2017 ◽  
Vol 95 (21) ◽  
Author(s):  
Aaron S. Rury ◽  
Jahan M. Dawlaty
Keyword(s):  
Charge Transfer ◽  
Coherence Transfer ◽  
Vibrational Coherence ◽  
Hydrogen Bonded

Vibrational Coherence in Charge Transfer

1993 ◽  
pp. 71-73 ◽  
Author(s):  
K. Wynne ◽  
C. Galli ◽  
P. J. F. De Rege ◽  
M. J. Therien ◽  
R. M. Hochstrasser
Keyword(s):  
Charge Transfer ◽  
Vibrational Coherence

scholarly journals Vibronic coherence evolution in multidimensional ultrafast photochemical processes

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
James D. Gaynor ◽  
Jason Sandwisch ◽  
Munira Khalil
Keyword(s):  
Excited State ◽  
Charge Transfer ◽  
Vibrational Spectroscopy ◽  
Low Frequency ◽  
Coherence Transfer ◽  
Transfer Energy ◽  
Electronic Delocalization ◽  
Vibronic States ◽  
High Frequency Vibrations ◽  
Vibronic Couplings

AbstractThe complex choreography of electronic, vibrational, and vibronic couplings used by photoexcited molecules to transfer energy efficiently is remarkable, but an unambiguous description of the temporally evolving vibronic states governing these processes has proven experimentally elusive. We use multidimensional electronic-vibrational spectroscopy to identify specific time-dependent excited state vibronic couplings involving multiple electronic states, high-frequency vibrations, and low-frequency vibrations which participate in ultrafast intersystem crossing and subsequent relaxation of a photoexcited transition metal complex. We discover an excited state vibronic mechanism driving long-lived charge separation consisting of an initial electronically-localized vibrational wavepacket which triggers delocalization onto two charge transfer states after propagating for ~600 femtoseconds. Electronic delocalization consequently occurs through nonadiabatic internal conversion driven by a 50 cm−1 coupling resulting in vibronic coherence transfer lasting for ~1 picosecond. This study showcases the power of multidimensional electronic-vibrational spectroscopy to elucidate complex, non-equilibrium energy and charge transfer mechanisms involving multiple molecular coordinates.

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