๐”– Bobbio Scriptorium
โœฆ   LIBER   โœฆ

Rate constants of interaction of benzophenone triplet with amines

โœ Scribed by Saul G. Cohen; Arnold D. Litt

Book ID
104248704
Publisher
Elsevier Science
Year
1970
Tongue
French
Weight
212 KB
Volume
11
Category
Article
ISSN
0040-4039

No coin nor oath required. For personal study only.

โœฆ Synopsis

Photoreduction of aromatic ketones by amines may show moderately high quantum yields, cp -0.6-1.4, as compared with a theoretical maximum value of cp = 2, and low sensitivity to diffusion controlled physical quenchers and to concentration of amines.(l,2,3) These properties led us to propose (1,2) a stepwise reaction which proceeds via rapid charge transfer interaction of ketone triplet with amine, with high rate constant kir, followed either by charge destruction and quenching or by hydrogen transfer and formation of radicals. The relative importance of these two alternatives largely determines the quantum yields, eq. 1 Ar&=O*(T1)

๐Ÿ“œ SIMILAR VOLUMES

Photoreduction of triplet benzophenone b
Photoreduction of triplet benzophenone by amines: role of their structure
โœ Markus von Raumer; Paul Suppan; Edwin Haselbach ๐Ÿ“‚ Article ๐Ÿ“… 1996 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 236 KB

The reaction of triplet benzophenone with the tertiary amines triisopropylamine and diisopropyl-3-pentylami~e does not lead to photoreduction. An explanation of this unusual behaviour is given based on the particular structure of these amines. The initial charge transfer events are compared with tho

Concerning the mechanism of interaction
Concerning the mechanism of interaction of triplet benzophenone with norbornadienes and quadricyclenes
โœ A.A. Gorman; R.L. Leyland; M.A.J. Rodgers; P.G. Smith ๐Ÿ“‚ Article ๐Ÿ“… 1973 ๐Ÿ› Elsevier Science ๐ŸŒ French โš– 346 KB

Norbornadiene (l) and quadricyclene (2) undergo photointerconversion in the presence of certain 1,2,3 aromaticketone and -aldehyde triplet sensitizers. The position of the photostationary state thus obtained depends on the triplet energy of the donor. This has been interpreted in terms of a nonspect