Transient Spectra and Photoreaction of 4-Methoxybenzoyloxyl Radical

1999 ◽  
Vol 28 (8) ◽  
pp. 805-806 ◽  
Author(s):  
Shigero Oishi ◽  
Hirotaka Tsubaki ◽  
Hideyo Matsuzawa
Keyword(s):  
Transient Spectra

scholarly journals Probing the Birth and Dynamics of Hydrated Electrons at the Gold/Liquid Water Interface via a Novel Optoelectronic Approach

2020 ◽  
Author(s):  
François Lapointe ◽  
Martin Wolf ◽  
Kramer Campen ◽  
Yujin Tong
Keyword(s):  
Time Resolution ◽  
Optical Transition ◽  
Structural Evolution ◽  
Practical Significance ◽  
Hot Electron ◽  
Solvated Electrons ◽  
State Dependent ◽  
Transient Spectra ◽  
Solid Liquid ◽  
Electrochemical Interfaces

<p>The hydrated electron has fundamental and practical significance in radiation and radical chemistry, catalysis and radiobiology. While its bulk properties have been extensively studied, its behavior at buried solid/liquid interfaces is still unclear due to the lack of effective tools to characterize this short-lived species in between two condensed matter layers. In this study, we develop a novel optoelectronic technique for the characterization of the birth and structural evolution of solvated electrons at the metal/liquid interface with a femtosecond time resolution. We thus recorded for the first time their transient spectra (in a photon energy range from 0.31 to 1.85 eV) <i>in situ</i><i> </i>with a time resolution of 50 fs. The transient species show state-dependent optical transition behaviors from being isotropic in the hot state to perpendicular to the surface in the trapped and solvated states. The technique will enable a better understanding of hot electron-driven reactions at electrochemical interfaces.</p>

S1→ Snand S2→ SnAbsorption of Azulene:  Femtosecond Transient Spectra and Excited State Calculations

2003 ◽  
Vol 107 (11) ◽  
pp. 1689-1696 ◽  
Author(s):  
Paolo Foggi ◽  
Frederik V. R. Neuwahl ◽  
Laura Moroni ◽  
Pier Remigio Salvi
Keyword(s):  
Excited State ◽  
Transient Spectra

Transient Spectra in Beryllium

1967 ◽  
Vol 29 (1) ◽  
pp. 149-151
Author(s):  
A. K. Ghatak ◽  
I. C. Goyal ◽  
L. S. Kothari
Keyword(s):  
Transient Spectra

Transient spectra of strong-field resonance fluorescence

1987 ◽  
Vol 59 (19) ◽  
pp. 2149-2152 ◽  
Author(s):  
J. E. Golub ◽  
T. W. Mossberg
Keyword(s):  
Strong Field ◽  
Resonance Fluorescence ◽  
Transient Spectra

Observation of transient spectra and mode partition noise of injection lasers

1982 ◽  
Vol 18 (21) ◽  
pp. 904 ◽  
Author(s):  
Pao-Lo Liu ◽  
T.P. Lee ◽  
C.A. Burrus ◽  
I.P. Kaminow ◽  
J.-S. Ko
Keyword(s):  
Transient Spectra ◽  
Injection Lasers

Pulse Radiolysis of Nitric Oxide in Aqueous Solution

1973 ◽  
Vol 51 (7) ◽  
pp. 1123-1130 ◽  
Author(s):  
W. A. Seddon ◽  
J. W. Fletcher ◽  
F. C. Sopchyshyn
Keyword(s):  
Nitric Oxide ◽  
Pulse Radiolysis ◽  
Reaction Rate ◽  
Dissociation Constants ◽  
Acid Dissociation ◽  
Acid Dissociation Constants ◽  
Reaction Rate Constants ◽  
Wide Range ◽  
Transient Spectra ◽  
Computer Calculations

Transient spectra observed on the pulse radiolysis of aqueous solutions of nitric oxide at pH 7.0 have been assigned to the species NO−, N2O2−, and N3O3−. In acid solution these species are protonated to form the corresponding acids, HNO, HN2O2, and HN3O3. Both the basic and acid forms undergo similar reactions, but at different rates, to form the products of radiolysis N2O and NO2−.[Formula: see text]The basic species decays more slowly than the corresponding acid species but both processes have appreciable activation energies of 15 and 10 kcals/mol, respectively. Computer calculations have been used in conjunction with the experimental data over a wide range of pH and NO concentration to deduce a reaction mechanism consistent with the observed results. Reaction rate constants, acid dissociation constants and extinction coefficients for the various species are presented and compared with earlier work.

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