Site-specific photochemistry

Brent D. Koplitz; Jeffrey L. Brum; Subhash Deshmukh; Xiaodong Xu; Zhongrui Wang; Yu-Fong Yen

doi:10.1117/12.58134

1 April 1992 Site-specific photochemistry

Brent D. Koplitz, Jeffrey L. Brum, Subhash Deshmukh, Xiaodong Xu, Zhongrui Wang, Yu-Fong Yen

Proceedings Volume 1638, Optical Methods for Time- and State-Resolved Chemistry; (1992) https://doi.org/10.1117/12.58134
Event: OE/LASE '92, 1992, Los Angeles, CA, United States

Abstract

We present results on `site-specific' H-atom production in photolysis experiments conducted under collisionless conditions. H and D atoms are used as labels to investigate the site(s) at which C-H (or C-D) bond cleavage occurs in a variety of haloalkane systems. Experiments using two photolysis lasers clearly indicate that photon absorption by an intermediate, presumably an alkyl radical, is important in many of the systems studied. The site(s) (e.g., (alpha) , (beta) , or (gamma) ) at which C-H (or C-D) bond cleavage occurs is dependent not only on the nature of the molecule, but also on the photolysis wavelength. As a diagnostic tool, H- and D-atom Doppler spectroscopy allows us to gain insight into the energetics associated with the various dissociation processes. Our overall aim is to gain a further understanding of the photolysis properties of a variety of simple molecules and their associated radicals.

Citation Download Citation

Brent D. Koplitz, Jeffrey L. Brum, Subhash Deshmukh, Xiaodong Xu, Zhongrui Wang, and Yu-Fong Yen "Site-specific photochemistry", Proc. SPIE 1638, Optical Methods for Time- and State-Resolved Chemistry, (1 April 1992); https://doi.org/10.1117/12.58134

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