Coherent Vibrational Dynamics in the Ground State

2019 ◽  
pp. 157-163
Author(s):  
Gianluca Levi
Keyword(s):  
Ground State ◽  
Vibrational Dynamics

Controlling and probing impulsively induced ground state vibrational dynamics

2000 ◽  
Author(s):  
Erez Gershgoren ◽  
Sanford Ruhman ◽  
Jiri Vala ◽  
Ronnie Kosloff
Keyword(s):  
Ground State ◽  
Vibrational Dynamics

scholarly journals Viscosity Dependence of the Ultrafast Vibrational Dynamics of Borohydride in NaOH Solutions: Crowding Effect on Dihydrogen Bonds

2019 ◽  
Author(s):  
Clinton Johnson ◽  
Kai C. Gronborg ◽  
Thomas Brinzer ◽  
Zhe Ren ◽  
Sean Garrett-Roe
Keyword(s):  
Ground State ◽  
Vibrational Energy ◽  
Vibrational Energy Relaxation ◽  
Energy Redistribution ◽  
Vibrational Dynamics ◽  
Structure And Dynamics ◽  
2D Ir ◽  
Intramolecular Vibrational Energy Redistribution ◽  
Two Dimensional Infrared Spectroscopy ◽  
Viscosity Dependence

<p>Two-dimensional infrared spectroscopy (2D-IR) probes the local solvent structure and dynamics of the nu<sub>3</sub> mode (BH antisymmetric stretch) of borohydride (BH<sub>4</sub><sup>-</sup> ) in aqueous solution. The 2D-IR spectra of the BH stretches have broad and overlapping bands. Vibrational energy relaxation occurs on a 2 ps timescale. Energy that is initially deposited in BH stretching modes and directly in the solvent generates a long lived hot ground state. Before the hot ground state appears, some indications of intramolecular vibrational energy redistribution are observed. The solvent viscosity was varied (1.5–6 cP) by increasing the hydroxide concentration (0.1–7 M). Within the vibrational lifetime of the BH stretching modes, the rate of structural relaxation slows proportionally to the viscosity due to the overlap of the ions’s solvation shells.</p>

HeBr2complex: ground-state potential and vibrational dynamics fromab initiocalculations

2004 ◽  
Vol 102 (21-22) ◽  
pp. 2277-2283 ◽  
Author(s):  
Álvaro Valdés * ◽  
Rita Prosmiti ◽  
Pablo Villarreal ◽  
Gerardo Delgado-Barrio
Keyword(s):  
Ground State ◽  
Vibrational Dynamics ◽  
State Potential

Two-dimensional probing of ground-state vibrational dynamics in porphyrin molecules by fs-CARS

2001 ◽  
Vol 32 (9) ◽  
pp. 771-784 ◽  
Author(s):  
M. Heid ◽  
S. Schlücker ◽  
U. Schmitt ◽  
T. Chen ◽  
R. Schweitzer-Stenner ◽  
...  
Keyword(s):  
Ground State ◽  
Two Dimensional ◽  
Vibrational Dynamics

scholarly journals Viscosity Dependence of the Ultrafast Vibrational Dynamics of Borohydride in NaOH Solutions: Crowding Effect on Dihydrogen Bonds

2019 ◽  
Author(s):  
Clinton Johnson ◽  
Kai C. Gronborg ◽  
Thomas Brinzer ◽  
Zhe Ren ◽  
Sean Garrett-Roe
Keyword(s):  
Ground State ◽  
Vibrational Energy ◽  
Vibrational Energy Relaxation ◽  
Energy Redistribution ◽  
Vibrational Dynamics ◽  
Structure And Dynamics ◽  
2D Ir ◽  
Intramolecular Vibrational Energy Redistribution ◽  
Two Dimensional Infrared Spectroscopy ◽  
Viscosity Dependence

<p>Two-dimensional infrared spectroscopy (2D-IR) probes the local solvent structure and dynamics of the nu<sub>3</sub> mode (BH antisymmetric stretch) of borohydride (BH<sub>4</sub><sup>-</sup> ) in aqueous solution. The 2D-IR spectra of the BH stretches have broad and overlapping bands. Vibrational energy relaxation occurs on a 2 ps timescale. Energy that is initially deposited in BH stretching modes and directly in the solvent generates a long lived hot ground state. Before the hot ground state appears, some indications of intramolecular vibrational energy redistribution are observed. The solvent viscosity was varied (1.5–6 cP) by increasing the hydroxide concentration (0.1–7 M). Within the vibrational lifetime of the BH stretching modes, the rate of structural relaxation slows proportionally to the viscosity due to the overlap of the ions’s solvation shells.</p>

Renilla Bioluminescence: A Morphologic Approach to the Location of Photocytes

1974 ◽  
Vol 32 ◽  
pp. 208-209
Author(s):  
Ben O. Spurlock ◽  
Milton J. Cormier
Keyword(s):  
Excited State ◽  
Ground State ◽  
Molecular Basis ◽  
Light Emission ◽  
Chemical Basis ◽  
Electronic Excited State ◽  
Colonial Form ◽  
The Common ◽  
Eighteenth And Nineteenth Centuries ◽  
Catalyzed Oxidation

The phenomenon of bioluminescence has fascinated layman and scientist alike for many centuries. During the eighteenth and nineteenth centuries a number of observations were reported on the physiology of bioluminescence in Renilla, the common sea pansy. More recently biochemists have directed their attention to the molecular basis of luminosity in this colonial form. These studies have centered primarily on defining the chemical basis for bioluminescence and its control. It is now established that bioluminescence in Renilla arises due to the luciferase-catalyzed oxidation of luciferin. This results in the creation of a product (oxyluciferin) in an electronic excited state. The transition of oxyluciferin from its excited state to the ground state leads to light emission.

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