Vibrational Energy Relaxation of Thiocyanate Ions in Liquid-to-Supercritical Light and Heavy Water. A Fermi’s Golden Rule Analysis

2014 ◽  
Vol 5 (19) ◽  
pp. 3373-3379 ◽  
Author(s):  
Denis Czurlok ◽  
Jeannine Gleim ◽  
Jörg Lindner ◽  
Peter Vöhringer
Keyword(s):  
Heavy Water ◽  
Vibrational Energy ◽  
Golden Rule ◽  
Energy Relaxation ◽  
Vibrational Energy Relaxation ◽  
Fermi's Golden Rule ◽  
Rule Analysis ◽  
Fermi’S Golden Rule

Photoinduced Charge Transfer Dynamics in Carotenoid-Porphyrin-C60 Triad via the Linearized Semiclassical Nonequilibrium Fermi's Golden Rule

2020 ◽  
Author(s):  
Zhengqing Tong ◽  
Margaret S. Cheung ◽  
Barry D. Dunietz ◽  
Eitan Geva ◽  
Xiang Sun
Keyword(s):  
Charge Transfer ◽  
Golden Rule ◽  
Time Dependent ◽  
Rate Coefficients ◽  
Initial State ◽  
Photoinduced Charge Transfer ◽  
Transfer Rates ◽  
Fermi's Golden Rule ◽  
Photoinduced Charge ◽  
Fermi’S Golden Rule

The nonequilibrium Fermi’s golden rule (NE-FGR) describes the time-dependent rate coefficient for electronic transitions, when the nuclear degrees of freedom start out in a <i>nonequilibrium</i> state. In this letter, the linearized semiclassical (LSC) approximation of the NE-FGR is used to calculate the photoinduced charge transfer rates in the carotenoid-porphyrin-C<sub>60</sub> molecular triad dissolved in explicit tetrahydrofuran. The initial nonequilibrium state corresponds to impulsive photoexcitation from the equilibrated ground-state to the ππ* state, and the porphyrin-to-C<sub>60</sub> and the carotenoid-to-C<sub>60</sub> charge transfer rates are calculated. Our results show that accounting for the nonequilibrium nature of the initial state significantly enhances the transition rate of the porphyrin-to-C<sub>60</sub> CT process. We also derive the instantaneous Marcus theory (IMT) from LSC NE-FGR, which casts the CT rate coefficients in terms of a Marcus-like expression, with explicitly time-dependent reorganization energy and reaction free energy. IMT is found to reproduce the CT rates in the system under consideration remarkably well.

Fluorescence from the Highly Excited States and Vibrational Energy Relaxation in Directly Linked Porphyrin Arrays

2002 ◽  
Vol 75 (5) ◽  
pp. 1023-1029 ◽  
Author(s):  
Nam Woong Song ◽  
Hyun Sun Cho ◽  
Min-Chul Yoon ◽  
Sae Chae Jeoung ◽  
Naoya Yoshida ◽  
...  
Keyword(s):  
Excited States ◽  
Vibrational Energy ◽  
Energy Relaxation ◽  
Vibrational Energy Relaxation

Effect of excitation on non-Markovian vibrational energy relaxation

1982 ◽  
Vol 86 (12) ◽  
pp. 2197-2205 ◽  
Author(s):  
Biman Bagchi ◽  
David W. Oxtoby
Keyword(s):  
Vibrational Energy ◽  
Energy Relaxation ◽  
Vibrational Energy Relaxation
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