Carotenoid cation radicals: electrochemical, optical, and EPR study

Journal Article · Wed Mar 30 00:00:00 EST 1988 · J. Am. Chem. Soc.; (United States)

DOI:https://doi.org/10.1021/ja00215a025· OSTI ID:7076060

Grant, J L; Kramer, V J; Ding, R; Kispert, L D

The general aim of this investigation is to determine whether carotenoid cation radicals can be produced, and stabilized, electrochemically. Hence, the authors have undertaken a detailed study of the electrooxidation of various carotenoids (..beta..-carotene (I), ..beta..-apo-8'-carotenal (II), and canthaxanthin (III) using the techniques of cyclic voltammetry, controlled-potential electrolysis (cpe) in conjunction with optical spectroscopy, and EPR spectroscopy coupled with in situ electrolysis. They report the successful generation of carotenoid cation radicals via electrochemical oxidation and, furthermore, the stabilization of these radicals for several minutes in CH/sub 2/Cl/sub 2/ and C/sub 2/H/sub 4/Cl/sub 2/ solvents.

• Research Organization: Univ. of Alabama, Tuscaloosa (USA)
• DOE Contract Number: FG05-86ER13465
• OSTI ID: 7076060
• Journal Information: J. Am. Chem. Soc.; (United States), Vol. 110:7
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
14 SOLAR ENERGY
CAROTENOIDS
CHEMICAL PREPARATION
ELECTROLYSIS
OXIDATION
CATIONS
RADICALS
ELECTROCHEMISTRY
ELECTRON SPIN RESONANCE
EXPERIMENTAL DATA
SPECTROSCOPY
VOLTAMETRY
CHARGED PARTICLES
CHEMICAL REACTIONS
CHEMISTRY
DATA
HYDROCARBONS
INFORMATION
IONS
LYSIS
MAGNETIC RESONANCE
NUMERICAL DATA
ORGANIC COMPOUNDS
PIGMENTS
RESONANCE
SYNTHESIS
TERPENES
400400* - Electrochemistry
140505 - Solar Energy Conversion- Photochemical
Photobiological
& Thermochemical Conversion- (1980-)