Deprotonation of Carotenoid Radical Cation and Formation of a Didehydrodimer
The Journal of Physical Chemistry B2003Vol. 107(47), pp. 13237–13240
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Abstract
Deprotonation of the carotenoid radical cation (Car•+) in CH2Cl2 was studied by electrochemistry, optical, MALDI-TOF, and EPR spectroscopy. Water enhances deprotonation of the carotenoid radical cation. The formation of a didehydrodimer (#Car)2 (#Car: Car with one less proton) was confirmed by the above techniques. The structure of the dimer is proposed on the basis of semiempirical calculations, optical, and EPR studies.
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