Kaletas, B. K. and Kozhevnikov, Valery N. and Zimine, Mikhail and Williams, Rene M. and Koenig, Burkhard and De Cola, Luisa (2005) Sensitization of nanocrystalline TiO2 films with carboxy-functionalized bis(indolyl)maleimide. EUROPEAN JOURNAL OF ORGANIC CHEMISTRY (16). pp. 3443-3449. ISSN 1434-193X, 1099-0690
Full text not available from this repository. (Request a copy)Abstract
The immobilization on a semiconductor surface of a bis(indolyl)maleimide functionalized with two carboxylic acid groups by alkylation of the indole nitrogen atoms is presented and its synthesis is described. The compound, 3,4-bis[1-(carboxymethyl)-3-indolyl]-1H-pyrrole-2,5-dione is strongly colored and emissive and the imide part can coordinate an oxidizable substrate. Its absorption and emission spectra on TiO2 are substantially changed as compared to the spectra obtained in neat acetonitrile, indicating surface bonding through the carboxy groups. The quenching of the fluorescence of the sensitizer by the TiO2 surface is almost complete, reflecting the high degree of association between the TiO2 and the dye, fast charge injection and good electronic coupling between the sensitizer and the semiconductor.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | PHOTOINDUCED ELECTRON-TRANSFER; CHARGE SEPARATION; TITANIUM-DIOXIDE; DYE MOLECULES; LIGHT; SEMICONDUCTORS; CONVERSION; ILLUMINATION; PHOTOLYSIS; COMPLEXES; photochemistry; electron transfer; sensitizers; thin films; time-resolved spectroscopy |
| Subjects: | 500 Science > 540 Chemistry & allied sciences |
| Divisions: | Chemistry and Pharmacy > Institut für Organische Chemie > Lehrstuhl Prof. Dr. Burkhard König |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 03 May 2021 09:22 |
| Last Modified: | 03 May 2021 09:22 |
| URI: | https://pred.uni-regensburg.de/id/eprint/35772 |
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