Vibrational Relaxation Dynamics of an Azido–Cobalt(II) Complex from Femtosecond UV-Pump/MIR-Probe Spectroscopy and Model Simulations with Ab Initio Anharmonic Couplings

2020 ◽  
Vol 59 (20) ◽  
pp. 14629-14642
Author(s):  
Steffen Straub ◽  
Jessica Stubbe ◽  
Jörg Lindner ◽  
Biprajit Sarkar ◽  
Peter Vöhringer
Keyword(s):  
Ab Initio ◽  
Vibrational Relaxation ◽  
Relaxation Dynamics ◽  
Model Simulations ◽  
Probe Spectroscopy ◽  
Anharmonic Couplings

A New ab Initio Potential Energy Surface for Studying Vibrational Relaxation in NO(v) + NO Collisions

2011 ◽  
Vol 115 (13) ◽  
pp. 2892-2899 ◽  
Author(s):  
Pedro Pajón-Suárez ◽  
Jesús Rubayo-Soneira ◽  
Ramón Hernández-Lamoneda
Keyword(s):  
Potential Energy ◽  
Potential Energy Surface ◽  
Ab Initio ◽  
Vibrational Relaxation ◽  
Energy Surface

Vibrational dynamics of the CO stretching of 9-fluorenone studied by visible-pump and infrared-probe spectroscopy

2015 ◽  
Vol 177 ◽  
pp. 65-75 ◽  
Author(s):  
Yuki Fukui ◽  
Kaoru Ohta ◽  
Keisuke Tominaga
Keyword(s):  
Low Frequency ◽  
Spectral Shift ◽  
Vibrational Dynamics ◽  
Electronically Excited State ◽  
Protic Solvents ◽  
Electronically Excited ◽  
Probe Spectroscopy ◽  
Hydrogen Bond Dynamics ◽  
Solvent Complex ◽  
Anharmonic Couplings

We studied the effects of hydrogen bonds on the vibrational structures and vibrational dynamics of the CO stretching mode of 9-fluorenone (FL) in the electronically excited state in aprotic and protic solvents using sub-picosecond visible-pump and IR-probe spectroscopy. The transient IR spectrum of the CO stretching band in methanol-d4 has two bands at 1529.9 cm−1 and 1543.4 cm−1, which are assigned to an FL-solvent complex and free FL, respectively. In the aprotic solvents, the CO stretching bands show blue-shifts in time. This shift is due to vibrational cooling, which is derived from anharmonic couplings with some low-frequency modes. Interestingly, a red-shift is observed at later delay time for the band at 1529.9 cm−1 in methanol-d4. A possible mechanism of this spectral shift is related to the hydrogen bond dynamics between the solute and solvent.

Relaxation dynamics of the OH stretching overtones in isolated HDO molecules observed by IR pump-repump-probe spectroscopy

CLEO: 2015 ◽  
2015 ◽  
Author(s):  
Daniel Hutzler ◽  
Jasper C. Werhahn ◽  
Rupert Heider ◽  
Maximilian Bradler ◽  
Reinhard Kienberger ◽  
...  
Keyword(s):  
Relaxation Dynamics ◽  
Probe Spectroscopy

Quasiparticle relaxation dynamics in underdoped Bi2Sr2CaCu2O8+δby two-color pump-probe spectroscopy

2011 ◽  
Vol 84 (17) ◽  
Author(s):  
Y. Toda ◽  
T. Mertelj ◽  
P. Kusar ◽  
T. Kurosawa ◽  
M. Oda ◽  
...  
Keyword(s):  
Relaxation Dynamics ◽  
Pump Probe ◽  
Quasiparticle Relaxation ◽  
Probe Spectroscopy

UlTRAFAST LATTICE RELAXATION DYNAMICS OF EXCITON IN A QUAISI-1-D METAL-HALOGEN COMPLEX

2001 ◽  
Vol 15 (28n30) ◽  
pp. 3965-3968
Author(s):  
ATSUSHI SUGITA ◽  
TAKASHI SAITO ◽  
TAKAYOSHI KOBAYASHI ◽  
MASAHIRO YAMASHITA
Keyword(s):  
Wave Packet ◽  
Free Exciton ◽  
Mixed Valence ◽  
Lattice Relaxation ◽  
Relaxation Dynamics ◽  
Time Resolved ◽  
Pump And Probe ◽  
Probe Spectroscopy ◽  
Electronic Ground ◽  
The Ideal

A quasi-one-dimensional halogen-bridged mixed-valence metal complex is studied by time-resolved pump and probe spectroscopy with sub-5 fs time resolution. Two kinds of oscillatory signals are observed, which are attributed to the wave packet motions both in an electronic ground state and in a self-trapped exciton (STE) state. The onset of the wave packet motion is found to be delayed by about 50 fs, comparing with the ideal wave packet in the electronic excited state. The delay reflects the thermalization process in a free exciton (FE) state and a lattice relaxation process from FE to STE states.

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