The tripletlifetimes of hindered 4′-substituted-2,4,6-tri-isopropylbenzophenones decrease (increase) with the increasing electron-donating (withdrawing) ability of the ring substituents; this is the opposite effect to that expected from the rate of the intermolecular hydrogen-abstraction reaction of unhindered benzophenones.
Para Acylation of Polyalkylbenzophenones by Aryl 2,4,6-Trialkylbenzoates
作者:Reynold C. Fuson、E. M. Bottorff、R. E. Foster、S. B. Speck
DOI:10.1021/ja01263a013
日期:1942.11
Novel photoreversible cyclization of acyl-substituted 2,4,6-triisopropylbenzophenones
作者:Yoshikatsu Ito、Brij Pal Giri、Masaaki Nakasuji、Toshiya Hagiwara、Teruo Matsuura
DOI:10.1021/ja00343a008
日期:1983.3
Absorption kinetics of photochemical reactions of 2,4,6-triisopropylbenzophenone and its derivatives in benzene at room temperature studied by nanosecond spectroscopy. 2. Laser chemistry, molecular dynamics, collisions, and energy transfer