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首页> 美国政府科技报告 >Electronic Excitation Energy Partitioning in Dissymmetric Dioxetane Thermolyses. The Absolute Chemiluminescence Yields and Triplet to Singlet Excited State Ratios for 3-Acetyl-4,4-dimethyl-1,2-dioxetane.
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Electronic Excitation Energy Partitioning in Dissymmetric Dioxetane Thermolyses. The Absolute Chemiluminescence Yields and Triplet to Singlet Excited State Ratios for 3-Acetyl-4,4-dimethyl-1,2-dioxetane.

机译：不对称二氧杂环丁烷热分解中的电子激发能量分配。对于3-乙酰基-4,4-二甲基-1,2-二氧杂环丁烷，绝对化学发光产率和三重态与单重态激发态比率。

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Prerequisite to the logical design of efficient chemiluminescent systems is the detailed knowledge of the fundamental excitation steps in known chemiluminescent processes. The study of the unimolecular thermal decomposition of 1,2-dioxetanes, subsequent to the isolation and characterization of the first dioxetane in 1969, has provided considerable insight into the chemistry of this ring system. Primary emphasis in the study of the excitation process in 1,2-dioxetanes has been given to the determination of those factors (energetic, geometric, Franck-Condon) which control the total excited state yield and the ratio of triplet to singlet excited state products. Any postulated excitation mechanism must account for the relatively high activation energies, the efficient production of eta pi excited state carbonyl containing products, and the high triplet to singlet excited state ratios observed for nearly all alkyl or phenyl substituted 1,2-dioxetane thermal decompositions.

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