Classical analysis of mode-mode energy transfer and dynamics during unimolecular reaction: hydrazoic acid, hydrogen peroxide, diimide, and methyl nitrite

1993 ◽  
Vol 97 (27) ◽  
pp. 7011-7023 ◽  
Author(s):  
Veronique Julien ◽  
Amit Patel ◽  
Yukari Jones ◽  
Jun Jiang ◽  
John S. Hutchinson
Keyword(s):  
Hydrogen Peroxide ◽  
Energy Transfer ◽  
Hydrazoic Acid ◽  
Unimolecular Reaction ◽  
Classical Analysis ◽  
Methyl Nitrite ◽  
Mode Energy

Mode‐to‐mode energy transfer in collisions between S1 state aniline and Ar, CO, CO2, C2H2, C3H4, OCS, Xe, and N2O

1984 ◽  
Vol 80 (11) ◽  
pp. 5545-5560 ◽  
Author(s):  
Richard L. Pineault ◽  
Robert L. Crackel ◽  
John F. Hedstrom ◽  
Walter S. Struve
Keyword(s):  
Energy Transfer ◽  
Mode Energy

scholarly journals Vector Correlations in Molecular Photofragmentations

1991 ◽  
Vol 11 (3-4) ◽  
pp. 151-156
Author(s):  
F. J. Comes
Keyword(s):  
Hydrogen Peroxide ◽  
Potential Energy ◽  
Intermediate State ◽  
Potential Energy Surfaces ◽  
Strong Dependence ◽  
Complete Analysis ◽  
Hydrazoic Acid ◽  
Parent Molecule ◽  
Vector Correlations ◽  
Energy Surfaces

Photofragmentation spectroscopy—the study of “half collisions” with polarized light of subdoppler line width—opens a window to look into the structure of molecules. The energy partitioning among the particular degrees of freedom of the products of the fragmentation reaction is described by the scalar properties, the direction and magnitude of a particular type of motion is described by the vector properties. The measurement of the scalar and vector properties allows a pictorial view of the intermediate state. The forces which make the fragments fly apart or rotate and vibrate can be “seen” from the line shapes. Information on the unstable intermediate state is gained from the stable fragments long after the dissociation of the parent molecule. In particular, information on the “lifetime” of the intermediate on a femtosecond time scale can be obtained.A number of molecules, mainly three and four atomic, have been studied by this technique. Hydrogen peroxide has shown up as a textbook example. A complete analysis was possible including not only correlation of different types of fragment motion but also a correlation of the two coincident particles formed from the same parent molecule. The experimental results are in full agreement with recent calculations of the dynamics of the fragmentation on newly obtained potential energy surfaces. Hydrogen peroxide shows a strong dependence of its potential energy on the dihedral angle in the two electronic states amenable to laser excitation. This experiment further demonstrates that an analysis is also possible if two states are excited simultaneously.Another good example is the fragmentation of hydrazoic acid for which also coincident pair correlation has been treated. Here again the results agree excellently with a qualitative picture which can be drawn from recently calculated ab initio potential energy surfaces. The HN3 example is much more complicated than the former one due to its higher structured upper potential energy surface. Strong rotational excitation is observed in the N2 fragment leaving the NH fragment rotationally cold.The treatment of vector correlations in molecular photofragmentation is a powerful tool for the study of the dynamics of molecular dissociation reactions.

Impulsive Energy Transfer during Unimolecular Reaction via Reactive Cylinders in Phase Space

1995 ◽  
Vol 99 (40) ◽  
pp. 14707-14718 ◽  
Author(s):  
Joanna R. Fair ◽  
Karin R. Wright ◽  
John S. Hutchinson
Keyword(s):  
Energy Transfer ◽  
Phase Space ◽  
Unimolecular Reaction

Nanoparticles based on quantum dots and a luminol derivative: implications for in vivo imaging of hydrogen peroxide by chemiluminescence resonance energy transfer

2016 ◽  
Vol 52 (22) ◽  
pp. 4132-4135 ◽  
Author(s):  
Eun Sook Lee ◽  
V. G. Deepagan ◽  
Dong Gil You ◽  
Jueun Jeon ◽  
Gi-Ra Yi ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Energy Transfer ◽  
In Vivo Imaging ◽  
Near Infrared ◽  
Resonance Energy Transfer ◽  
Resonance Energy ◽  
Hybrid Nanoparticles ◽  
Infrared Wavelength ◽  
Luminol Derivative

Hybrid nanoparticles allow for imaging hydrogen peroxide via chemiluminescence resonance energy transfer in the near-infrared wavelength range.

Studies in energy transfer II. The isomerization of cyclo propane—a quasi-unimolecular reaction

1953 ◽  
Vol 217 (1131) ◽  
pp. 563-571 ◽  
Keyword(s):  
Energy Transfer ◽  
Rate Constant ◽  
Reaction System ◽  
Thermal Isomerization ◽  
Unimolecular Reaction ◽  
Unimolecular Reactions

The thermal isomerization of cy clopropane to propylene is a homogeneous unimolecular reaction at 490° C and at pressures down of 0·007 cm. The rate constant of the unimolecular reaction falls off by a factor of ten as the pressure in the reaction system is decreased from 8·4 to 0·007 cm. The results are compared with various theories of quasi-unimolecular reactions. The addition of a non-reacting gas to the system counteracts the falling off. The relative efficiencies of a number of gases for maintaining the unimolecular rate constant have been measured.

scholarly journals Local Mode Excitation for Time Resolved Unimolecular Decay Studies

1983 ◽  
Vol 2 (5-6) ◽  
pp. 321-333 ◽  
Author(s):  
T. R. Rizzo ◽  
B. D. Cannon ◽  
E. S. McGinley ◽  
F. F. Crim
Keyword(s):  
Hydrogen Peroxide ◽  
Laser Excitation ◽  
Local Mode ◽  
Unimolecular Reaction ◽  
Time Resolved ◽  
Mode Excitation ◽  
Excited Molecules

Laser excitation of overtone vibrations is a useful technique for selectively preparing molecules for state-selected unimolecular reaction studies. In addition, these studies provide new data on overtone vibration transitions in the excited molecules. Data obtained from state-selected unimolecular decay experiments and photoacoustic measurements provide local mode parameters for overtone vibrations in tetramethyldioxetane, t-butylalcohol, t-butylhydroperoxide, and hydrogen peroxide.

Collisional energy transfer in the two-channel thermal unimolecular reaction of chloroethane-1,1,2-d3

1994 ◽  
Vol 98 (4) ◽  
pp. 1139-1144 ◽  
Author(s):  
Chang Ju Choi ◽  
Bum Wook Lee ◽  
Kyung Hoon Jung ◽  
E. Tschuikow-Roux
Keyword(s):  
Energy Transfer ◽  
Unimolecular Reaction ◽  
Collisional Energy ◽  
Collisional Energy Transfer
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