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Heterogeneous photosensitization—III the benzaldehyde photopolymer photosensitization of the 1,3-pentadienes in the gas phase [1]

✍ Scribed by G.R. De Maré; J.R. Fox; M. Termonia; B. Tshibangila

Publisher: Elsevier Science
Year: 1976
Tongue: English
Weight: 263 KB
Volume: 12
Category: Article
ISSN: 0014-3057
DOI: 10.1016/0014-3057(76)90148-8

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✦ Synopsis

The i.r. absorption spectrum of benzaldehyde photopolymer, formed by photolysis of benzaldehydc (,: > 300 nm, 7-50) in a Pyrex cell, shows the absence of specific benzoin absorption at 10-2 lan. The kinetics of the photopolymer sensitized cis ~ trans isomerization of the 1.3-pentadicnes have been studied for ,:, > 300 nm and pentadiene pressures between 1 and 470 torr. The luminescence excitation spectra of the photopolymer, the Stern Volmer plots, and the photostationary state ratios of the 1.3-pentadienes all indicate the presence of two different types of active chromophores in the photopolymer.

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