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The triplet state of dodecapentaenal: Electron spin echo spectroscopy of a polyenal

โœ Scribed by Marianne Ros; Edgar J.J. Groenen

Publisher
Elsevier Science
Year
1989
Tongue
English
Weight
410 KB
Volume
154
Category
Article
ISSN
0009-2614

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โœฆ Synopsis

Electron spin echo spectroscopy has enabled us to identify the non-radiative triplet state of all-trans-dodecapentaenal in stretched polyethylene films. We have obtained transient electron paramagnetic resonance spectra and determined the zero-field splitting parameters: X/h = -933 f 20 MHz. Y/h = -586 f 13 MHz and Z/h = I 512 k 20 MHz. Intersystem crossing mainly populates the upper spin sublevel. This state dominates the decay of the triplet state and has a lifetime of about 13 ps at 1.2 K.

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