Kunkely, Horst and Vogler, Arnd (2011) Electronic Spectra and Photochemistry of Coordinated Astaxanthin. ZEITSCHRIFT FUR NATURFORSCHUNG SECTION B-A JOURNAL OF CHEMICAL SCIENCES, 66 (8). pp. 828-832. ISSN 0932-0776,
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Astaxanthin (AXT) is a natural carotenoid which provides colorations to numerous living species such as salmon. Owing to its chelate function deprotonated astaxanthin (axt(-)) should be easily attached to metal ions. The complex Rh(III)(phpy)(2)(axt) with phpy(-) = deprotonated 2-phenylpyridine was prepared, and its electronic spectra and photochemistry were examined and compared to that of free AXT. Although different in detail, the spectra and photochemistry of AXT and Rh(phpy)2(axt) show common features such as fluorescence and photoisomerization of the axt(-) ligand in ethanol as solvent. In CH(2)Cl(2) free AXT as well as the complex undergo photooxidation owing to the reducing property of astaxanthin as an antioxidant.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | COMPLEXES; CAROTENOIDS; LUMINESCENCE; Electronic Spectra; Luminescence; Photochemistry; Rhodium Complexes; Astaxanthin; Carotenoid |
| Subjects: | 500 Science > 540 Chemistry & allied sciences |
| Divisions: | Chemistry and Pharmacy > Institut für Anorganische Chemie > Alumni or Retired Professors > Prof. Dr. Arnd Vogler |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 03 Jun 2020 06:31 |
| Last Modified: | 03 Jun 2020 06:31 |
| URI: | https://pred.uni-regensburg.de/id/eprint/20413 |
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