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Picosecond laser photolysis study of the photocycloreversion of heterocoerdianthrone endoperoxide

✍ Scribed by Th. Blumenstock; F.J. Comes; R. Schmidt; H.-D. Brauer

Publisher: Elsevier Science
Year: 1986
Tongue: English
Weight: 335 KB
Volume: 127
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(86)80589-9

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✦ Synopsis

The formation of heterocoerdianthrone (HCD) following laser pulse photolysis of its endoperoxide (HCDPO) was observed by laser-induced fluorescence. The rise time of HCD was determined to be 7, = 40 &-10 ps. The lifetime of the S,( RT*) state of HCDPO, from which cycloreversion occurs, was estimated by steady-state fluorescence measurements to be 7 < 3 ps. These results indicate photocycloreversion of HCDPO as a two-step reaction.

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