Picosecond Relaxation of3MLCT Excited States of [Re(Etpy)(CO)3(dmb)]+and [Re(Cl)(CO)3(bpy)] as Revealed by Time-Resolved Resonance Raman, UV−vis, and IR Absorption Spectroscopy

2004 ◽  
Vol 108 (13) ◽  
pp. 2363-2369 ◽  
Author(s):  
Davina J. Liard ◽  
Michael Busby ◽  
Pavel Matousek ◽  
Michael Towrie ◽  
Antonín Vlček
Keyword(s):  
Excited States ◽  
Absorption Spectroscopy ◽  
Resonance Raman ◽  
Ir Absorption ◽  
Time Resolved

Ultrafast Heme Dynamics in Ferrous versus Ferric CytochromecStudied by Time-Resolved Resonance Raman and Transient Absorption Spectroscopy

2006 ◽  
Vol 110 (25) ◽  
pp. 12766-12781 ◽  
Author(s):  
Michel Negrerie ◽  
Simona Cianetti ◽  
Marten H. Vos ◽  
Jean-Louis Martin ◽  
Sergei G. Kruglik
Keyword(s):  
Absorption Spectroscopy ◽  
Transient Absorption ◽  
Resonance Raman ◽  
Transient Absorption Spectroscopy ◽  
Time Resolved

Time-Resolved FT-IR Absorption Spectroscopy Using a Step-Scan Interferometer

1991 ◽  
Vol 45 (3) ◽  
pp. 390-397 ◽  
Author(s):  
Wolfgang Uhmann ◽  
Andreas Becker ◽  
Christoph Taran ◽  
Friedrich Siebert
Keyword(s):  
Absorption Spectroscopy ◽  
Ir Absorption ◽  
Time Resolved ◽  
Ft Ir

scholarly journals Diagnostics and modeling of glow discharges by time-resolved IR absorption spectroscopy

Vacuum ◽  
2002 ◽  
Vol 64 (3-4) ◽  
pp. 457-465 ◽  
Author(s):  
I. Tanarro ◽  
T. de los Arcos ◽  
C. Domingo ◽  
V.J. Herrero ◽  
M.M. Sanz
Keyword(s):  
Absorption Spectroscopy ◽  
Ir Absorption ◽  
Time Resolved ◽  
Glow Discharges

scholarly journals Time-Resolved Surface-Enhanced IR-Absorption Spectroscopy of Direct Electron Transfer to Cytochrome c Oxidase from R. sphaeroides

2013 ◽  
Vol 105 (12) ◽  
pp. 2706-2713 ◽  
Author(s):  
Andreas Schwaighofer ◽  
Christoph Steininger ◽  
David M. Hildenbrandt ◽  
Johannes Srajer ◽  
Christoph Nowak ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Cytochrome C ◽  
Cytochrome C Oxidase ◽  
Absorption Spectroscopy ◽  
Direct Electron Transfer ◽  
Ir Absorption ◽  
Time Resolved ◽  
Surface Enhanced

Ten-Nanosecond Step-Scan FT-IR Absorption Difference Time-Resolved Spectroscopy: Applications to Excited States of Transition Metal Complexes

1997 ◽  
Vol 51 (4) ◽  
pp. 580-583 ◽  
Author(s):  
Pingyun Chen ◽  
Richard A. Palmer
Keyword(s):  
Excited State ◽  
Excited States ◽  
Signal To Noise Ratio ◽  
Ir Absorption ◽  
Decay Kinetics ◽  
Time Resolved ◽  
Ligand Charge Transfer ◽  
Ft Ir ◽  
Good Signal ◽  
Nanosecond Time Resolution

Ten-nanosecond time resolution has been achieved with step-scan FT-IR absorbance difference spectroscopy (S2FT-IR Δ A TRS) and demonstrated by measuring Δ A spectra of fac-[Re(bpy)(CO)3Cl] and cis-[Os(bpy)2(CO)(4,4′-bpy)]2+ (bpy = 2,2′-bipyridine; 4,4′-bpy=4,4′-bipyridine) in CH3CN solution, following 355-nm laser excitation. In both complexes, the large shifts in (CO) to higher energy are consistent with the assignment that the lowest-energy excited states are metal-to-ligand charge transfer in nature. For [Os(bpy)2(CO)(4,4′-bpy)]2+, it is also possible to measure the excited-state decay kinetics, again with 10-ns resolution. In addition, Δ A bands are observed that are related to excited-state vibrations of the bipyridine ligands. Δ A spectra of good signal-to-noise ratio can be obtained for complexes with lifetimes as short as 10 ns.

scholarly journals Time-Resolved Resonance Raman Spectroscopy of Excited-State Porphyrins

1999 ◽  
Vol 19 (1-4) ◽  
pp. 271-274 ◽  
Author(s):  
S. E. J. Bell ◽  
J. H. Rice ◽  
J. J. McGarvey ◽  
R. E. Hester ◽  
J. N. Moore ◽  
...  
Keyword(s):  
Excited State ◽  
Excited States ◽  
Laser Excitation ◽  
Resonance Raman Spectroscopy ◽  
Resonance Raman ◽  
Laser Pulses ◽  
Significant Shift ◽  
Time Resolved ◽  
Two Component ◽  
Absorbance Difference

Time-resolved resonance Raman (TR3) and absorbance difference studies of the excited states of Cu(TPP) (TPP=5,10,15,20-tetraphenylporphyrin) have been carried out with < 10 ps times resolution in THF and pyridine solvents. In THF the distinctive transient Raman bands in the ν2 and ν4 regions, previously observed with ns laser pulses, grow in the first 55 ps before decaying in 100's of ps. The ∆A spectra also show biphasic decay. This behaviour is associated with attack by solvent on the 4-coordinate excited state to form the longer lived species observed in TR3 experiments.In pyridine two component decay is also observed but it is the shorter-lived species which gives the transient Raman bands seen previously with ns laser excitation. This state is different from that seen in THF. At 5 ps delay ν4 is broader than in the ground state and, more importantly, there is a significant shift in the two pyridine bands at ca. 1000 cm-1. This implies a significant involvement of the pyridine-based orbitals in the excited state.

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