R.M. Shelby, R.M. Macfarlane, et al.
Applied Physics B Photophysics and Laser Chemistry
Intermolecular hydrogen abstraction by benzophenone in a poly(methyl methacrylate) host is studied by using the new technique of holographic photochemistry. In this technique the temporal course of a photochemical reaction is followed by following the growth of a hologram resulting from the photochemistry. The photochemistry is found to involve two steps, each involving the absorption of two laser photons. In the first step a benzophenone triplet state abstracts a hydrogen atom from the host to produce a ketyl radical. This ketyl radical reacts with the host, producing a long-lived intermediate that is involved in the second step. The hydrogen abstraction reaction is found to occur only from a higher nπ* triplet state. No irreversible hydrogen abstraction occurs from the lowest nπ* or ππ* triplet state. © 1981 American Chemical Society.
R.M. Shelby, R.M. Macfarlane, et al.
Applied Physics B Photophysics and Laser Chemistry
C. Ortiz, R.M. Macfarlane, et al.
Applied Physics
J.D. Swalen, G.C. Bjorklund, et al.
Molecular Crystals and Liquid Crystals Science and Technology Section B: Nonlinear Optics
G.C. Bjorklund, D.M. Burland, et al.
The Journal of Chemical Physics