Vibrational Energy Relaxation of Metalloporphyrins in a Condensed Phase Probed by Time-Resolved Resonance Raman Spectroscopy

2002 ◽  
Vol 75 (4) ◽  
pp. 623-639 ◽  
Author(s):  
Yasuhisa Mizutani ◽  
Teizo Kitagawa
Keyword(s):  
Raman Spectroscopy ◽  
Condensed Phase ◽  
Vibrational Energy ◽  
Resonance Raman Spectroscopy ◽  
Resonance Raman ◽  
Energy Relaxation ◽  
Vibrational Energy Relaxation ◽  
Time Resolved

scholarly journals Vibrational Energy Relaxation in the (d, d) Excited State Of Nickel Octaethylporphyrin

1999 ◽  
Vol 19 (1-4) ◽  
pp. 275-277 ◽  
Author(s):  
Yasuhisa Mizutani ◽  
Yuki Uesugi ◽  
Teizo Kitagawa
Keyword(s):  
Excited State ◽  
Vibrational Energy ◽  
Resonance Raman Spectroscopy ◽  
Resonance Raman ◽  
Energy Relaxation ◽  
Electronic Relaxation ◽  
Vibrational Energy Relaxation ◽  
Time Resolved ◽  
Time Regime ◽  
Anti Stokes

The formation of a hot photoproduct of nickel octaethylporphyrin (NiOEP) upon ππ* excitation and its subsequent vibrational energy relaxation were monitored by picosecond time-resolved resonance Raman spectroscopy. Resonance Raman bands due to the photoproduct instantaneously appeared upon the photoexcitation. Their intensities decayed with a time constant of 330±20ps, which indicates electronic relaxation form the (d, d) excited state (B1g) to the ground state (B1g). Anti-Stokes ν4 band of the hot (d, d) excited state of NiOEP appeared immediately after the excitation and decayed with time constants of 11±2 and 330±40 ps. In contrast, the rise of anti- Stokes ν7 intensity was not instantaneous but delayed by 2.6±0.5 ps, which suggests that IVR has not been completed in a subpicosecond time regime.

Time-Resolved Resonance Raman Spectroscopy

1985 ◽  
pp. 93-109
Author(s):  
Robert Wilbrandt ◽  
Niels-Henrik Jensen ◽  
C. Houée-Levin ◽  
R. V. Bensasson
Keyword(s):  
Raman Spectroscopy ◽  
Resonance Raman Spectroscopy ◽  
Resonance Raman ◽  
Time Resolved
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