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ODMR of carotenoid and chlorophyll triplets in CP43 and CP47 complexes of spinach

✍ Scribed by Donatella Carbonera; Giovanni Giacometti; Giancarlo Agostini; Alexander Angerhofer; Volker Aust

Book ID: 103032971
Publisher: Elsevier Science
Year: 1992
Tongue: English
Weight: 482 KB
Volume: 194
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(92)86051-i

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✦ Synopsis

Optically detected magnetic resonance (ODMR) of the light-harvesting complexes CP43 and CP47 of the spinach photosynthetic machinery revealed triplet states both from carotenoids and chlorophylls. The triplet state of the only carotenoid present in the complexes (p-carotene) is observed by ODMR using fluorescence detection (FDMR) in the main chlorophyll emission band in the 680 nm region, and absorption detection in the visible region. Chlorophyll triplet signals are also obtained by microwave sweeping in the chlorophyll emission and absorption regions. MIA spectra are obtained and discussed for both complexes.

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