Electron spin-echo envelope modulation and pulse electron nuclear double resonance studies of Cu(super 2+)... beta-carotene interaction in Cu-MCM-41 molecular sieves
Article Abstract:
Perdeuterated all trans beta-carotene imbedded in activated Cu-MCM-41 was examined by electron paramagnetic resonance (EPR) and electron spin-echo envelope modulation (ESEEM) spectroscopies. ESEEM and pulse electron nuclear double resonance (ENDOR) studies of Cu(super 2+)-Car (carotenoids) complex in Cu-MCM-41 provided new information about the interaction between transition-metal ion and carotenoids.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2005
User Contributions:
Comment about this article or add new information about this topic:
Deprotonation of carotenoid radical cation and formation of a didehydrodimer
Article Abstract:
The study gives evidence that in the chemical oxidation of Carotenoids (Car), a didehydrodimer (#Car)2[probably (#Car)2(5-5)] can be formed from #Car., which in turn is the deprotonation product of Car(super .+). The deprotonation is found to be enhanced in water.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2003
User Contributions:
Comment about this article or add new information about this topic:
Reaction of carotenoids and ferric chloride: Equilibria, isomerization, and products
Article Abstract:
It is proposed that in the oxidation of carotenoids with FeCl3, there exist equilibria among the carotenoid, the radical cation, dication, and various inorganic species. The radical cation and dication were found to abstract an electron from Fe(super 2+).
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2003
User Contributions:
Comment about this article or add new information about this topic:
- Abstracts: In situ electron energy loss spectroscopy studies of gas-dependent metal-support interactions in Cu/ZnO catalysts
- Abstracts: Effects of concentration and temperature on SDS monolayers at the air-solution interface studied by infrared external reflection spectroscopy
- Abstracts: Molecular theory for the effects of specific solute-solvent interaction on the diffusion of a solute particle in a molecular liquid
- Abstracts: Electrochemical and surface-enhanced Raman spectroscopic studies on the adsorption and electrooxidation of C1 molecules on a roughened Rh electrode
- Abstracts: Multifrequency high-field electron paramagnetic resonance characterization of the peroxyl radical location in horse heart myoglobin oxidized by H2O2