Journal ArticleDOI
Intramolecular perturbations and the quenching of luminescence in small molecules
William M. Gelbart,Karl F. Freed +1 more
TLDR
In this article, the authors consider the problem of interpreting quenching kinetics in small molecules (e.g., CN, CH 2, NO 2 and SO 2 ) and argue the importance of analyzing these data in terms of collisional transitions between perturbed (mixed electronic parentage) as opposed to pure (non-spectroscopic) vibronic states.About:
This article is published in Chemical Physics Letters.The article was published on 1973-02-15. It has received 132 citations till now. The article focuses on the topics: Quenching (fluorescence) & Intramolecular force.read more
Citations
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Multimode molecular dynamics beyond the Born-Oppenheimer approximation
TL;DR: Theorie des effets de couplage vibronique multimodes is described in this paper, where couplages mettant en jeu des modes and des etats degeneres.
Journal ArticleDOI
Theories of intramolecular vibrational energy transfer
TL;DR: In this article, various theories describing the vibrational energy transfer in molecules are summarized with a special emphasis on nonlinear resonances, and a large bibliography supplements the text with references from a large number of references.
Journal ArticleDOI
Nonexponential decays in single vibronic level fluorescence: A comparison between kinetics and quantum mechanical treatment
TL;DR: In this article, the decay of a system resulting from the strong coupling (pv≫1) of a radiative state with a coarse manifold of nonradiative levels {l} excited by a coherent excitation was studied.
Journal ArticleDOI
Adiabatic and diabatic potential energy surfaces for collisions of CN(X 2Σ+, A 2Π) with He
TL;DR: In this article, the interaction potential energy surfaces for CN(X 2∑+, A 2∏)+He have been computed from ab initio MCSCF and MCSC-CI wave functions using an extensive basis set.
References
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Journal ArticleDOI
Anomalously Long Radiative Lifetimes of Molecular Excited States
TL;DR: In this paper, four mechanisms which may account for anomalous radiative lifetimes in collision-free molecules are presented using the properties of the stationary states of the molecules, and the two mechanisms which are most important for polyatomic molecules lead to highly perturbed energy levels and correspondingly complex spectra.
Journal ArticleDOI
Flash Photolysis of Ketene and Diazomethane: The Production and Reaction Kinetics of Triplet and Singlet Methylene
TL;DR: Ketene and diazomethane flash photolytic measurement of reaction rates of singlet-triplet methylene deactivation was carried out in this article, where the reaction rates were shown as a function of the number of methylene atoms.
Journal ArticleDOI
Kinetics of Nitrogen Dioxide Fluorescence
TL;DR: In this paper, the fluorescence lifetime and intensity of gas phase nitrogen dioxide (2B1) were measured as a function of excitation wavelength, fluorescence wavelength, and pressure (0.5-50 mtorr).
Journal ArticleDOI
Chemical and Magnetic Enhancement of Perturbed Lines in the Violet Spectrum of CN
H. E. Radford,H. P. Broida +1 more
TL;DR: In this article, a chemical kinetic theory based on the quantum-mechanical properties of perturbed molecular states is developed to explain the rotational intensity anomalies observed in the CN-band spectrum emitted by an active nitrogen flame.
Journal ArticleDOI
Kinetics and mechanism of NO2 fluorescence
TL;DR: In this article, the average amount of vibrational energy transferred per collision per collision was found to be 1000 ǫ· Ã 500 cm−1 based on a simplified stepladder model for the relaxation.