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Picosecond studies on the photodissociation dynamics of aromatic endoperoxides

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


Publisher
Elsevier Science
Year
1989
Tongue
English
Weight
827 KB
Volume
130
Category
Article
ISSN
0301-0104

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πŸ“œ SIMILAR VOLUMES


Picosecond photochemistry: The mechanism
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Time-resolved in combination with steady-state experiments reveal that aromatic endoperoxides dissociate in general in IWO steps via a biradical intermediate if excited to upper xu\* singlet states. This process is not influenced by solvent. Time constants in the picosecond domain are reported.

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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 estimate

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