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Titles listTetrathiafulvalene-Benzothiadiazoles as Redox-Tunable Donor-Acceptor Systems: Synthesis and Photophysical...
Titles listTetrathiafulvalene-Benzothiadiazoles as Redox-Tunable Donor-Acceptor Systems: Synthesis and Photophysical...
Scientific Article
unige:26401 
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Tetrathiafulvalene-Benzothiadiazoles as Redox-Tunable Donor-Acceptor Systems: Synthesis and Photophysical Study |
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| Published in | Chemistry - A European Journal. 2013, vol. 19, no. 7, p. 2504-2514 | |
| Abstract | Electrochemical and photophysical analysis of new donor–acceptor systems 2 and 3, in which a benzothiadiazole (BTD) unit is covalently linked to a tetrathiafulvalene (TTF) core, have verified that the lowest excited state can be ascribed to an intramolecular-charge-transfer (ICT) π(TTF)→π*(benzothiadiazole) transition. Owing to better overlap of the HOMO and LUMO in the fused scaffold of compound 3, the intensity of the 1ICT band is substantially higher compared to that in compound 2. The corresponding CT fluorescence is also observed in both cases. The radical cation TTF+. is easily observed through chemical and electrochemical oxidation by performing steady-state absorption experiments. Interestingly, compound 2 is photo-oxidized under aerobic conditions. | |
| Keywords | Charge transfer — Donor-acceptor systems — Fluorescence — Photophysics — Redox chemistry | |
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| Research groups | Groupe Hauser Groupe Vauthey | |
| Citation (ISO format) | POP, Flavia et al. Tetrathiafulvalene-Benzothiadiazoles as Redox-Tunable Donor-Acceptor Systems: Synthesis and Photophysical Study. In: Chemistry - A European Journal, 2013, vol. 19, n° 7, p. 2504-2514. doi: 10.1002/chem.201202742 https://archive-ouverte.unige.ch/unige:26401 |
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