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首页> 外文期刊>The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory >Fast processes and intermediates in photochemistry of 7-dimethyl-germanorbornadiene
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Fast processes and intermediates in photochemistry of 7-dimethyl-germanorbornadiene

机译：7-二甲基-锗烷降冰片二烯光化学的快速过程和中间体

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摘要

Laser pulse photolysis experiments have shown that the triplet excited-state of 1,2,3,4-tetraphenylnaphthalene (TPN) is one of the primary intermediates of the photochemical transformation of 7,7'-dimethylgerma-1,4,5,6-tetraphenyl-2,3-benzo-norbornadiene (GNB) in hexane solution. The molar absorption of T-T absorption and the quantum yield of the intersystem crossing of TPN were determined from the triplet-triplet energy transfer. The scheme of GNB photocleavage has been suggested where the triplet excited TPN originated from the triplet state of biradical through cleavage of the second C-Ge bond, the latter being generated from the excited singlet state of the initial GNB after the cleavage of the first C-Ge bond and the intersystem crossing. Other channels of GNB's chemical transformation have been discussed.
机译：激光脉冲光解实验表明1,2,3,4-四苯基萘（TPN）的三重激发态是7,7'-二甲基锗-1,4,5,6的光化学转化的主要中间体之一-四苯基-2,3-苯并降冰片二烯（GNB）的己烷溶液。由三重态-三重态能量转移确定了T-T吸收的摩尔吸收和TPN跨体系交叉的量子产率。已经提出了GNB光裂解的方案，其中三重态激发的TPN通过裂解第二个C-Ge键起源于双自由基的三重态，后者是由最初的GNB裂解后的初始GNB的激发单重态产生的。 -Ge键和系统间交叉。已经讨论了GNB化学转化的其他渠道。

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