Kunkely, Horst and Vogler, Arnd (2007) Fluorescence of alizarin complexone and its metal complexes. INORGANIC CHEMISTRY COMMUNICATIONS, 10 (3). pp. 355-357. ISSN 1387-7003,
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Alizarin complexone (AC) in ethanol shows two fluorescence bands which originate from the lowest excited singlet before and after proton transfer. Upon addition of various metal ions (Ni2+, Zn2+, Gd3+, Th4+) to AC in ethanol the formation of well known AC complexes takes place. They are characterized by intense colours which are caused by IL (or ILCT) transitions. If low-energy LF states (Ni2+) are absent (Zn2+, Gd3+, Th4+) these complexes show a weak fluorescence. Even in the case of Gd and Th a heavy-atom effect is not apparent and fluorescence quenching is not observed. Moreover, AC complexes are not phosphorescent under any conditions. (c) 2006 Elsevier B.V. All rights reserved.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | ELECTRONIC-ABSORPTION-SPECTRA; STATE PROTON-TRANSFER; SPECTROSCOPIC PROPERTIES; PHOSPHORESCENCE; HYDROXYANTHRAQUINONES; LIGANDS; LINKAGE; electronic spectra; fluorescence; alizarin; metal complexes |
| 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: | 21 Dec 2020 13:25 |
| Last Modified: | 21 Dec 2020 13:25 |
| URI: | https://pred.uni-regensburg.de/id/eprint/33105 |
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