FLUORESCENCE QUANTUM YIELDS OF SINGLE VIBRONIC LEVELS OF FORMYL FLUORIDE AND VIBRONIC STATE DISTRIBUTIONS OF PHOTO-ELIMINATED HYDROGEN FLUORIDE
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Date
1976
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Ohio State University
Abstract
Fluorescence quantum yields of single vibronic bands of formyl fluoride (HFCO) and deuterated formyl fluoride (DFCO) were obtained near the origin of the $^{1}(\pi, \Pi^{*}) \tilde{A}^{1}A \leftarrow \tilde {X}^{1}A^{\prime}$ system. Yields range between $10^{-4}$ to $10^{-2}$ for HFCO and between $10^{-3}$ to $10^{-1}$ for DFCO; photochemical reaction [cf. D. E. Klimek and M. J. Berry, Chem. Phys. Letters 20, 141 (1973)] predominates at all wavelengths. A chemical laser technique was used to measure vibronic state distributions of hydrogen fluoride produced by flash photolysis of HFCO; only a modest portion (ca. 10%) of the available energy is partitioned into vibrational excitation of this photochemical product. Probe laser techniques are being used to determine vibronic state distributions of the CO photochemical product of HFCO photolysis.
Description
This work was supported by the Directorate of Chemical Sciences, Air Force Office of Scientific Research, under Grant AFOSR-73-2423.
Author Institution: Department of Chemistry, University of Wisconsin
Author Institution: Department of Chemistry, University of Wisconsin