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Imidazole–Annulated Tetrathiafulvalenes exhibting pH–Tuneable Intramolecular Charge Transfer and Redox Properties

Published inChemistry - an Asian journal, vol. 4, no. 3, p. 392-399
Publication date2009
Abstract

CT or not CT: Three imidazole–annulated TTF derivatives 1–3 have been prepared and fully characterized. The influence of the TTF unit on the pKa values of the acceptor units as determined by photometric titration has been discussed. The results reported here are part of an initial exploratory study to generate a range of well–defined coordination networks. In order to study the electronic interactions in donor–acceptor ensembles as a function of pH, an efficient synthetic route to three imidazole–annulated tetrathiafulvalene (TTF) derivatives 1–3 is reported. Their electronic absorption spectra, in view of photoinduced intramolecular charge transfer, and their electrochemical behavior were investigated, and pKa values for the two protonation processes on the acceptor unit were determined in organic solvents by photometric titration. The influence of the TTF moiety on these values is discussed.

Keywords
  • Charge transfer
  • Donor-acceptor systems
Research group
Citation (ISO format)
WU, J. et al. Imidazole–Annulated Tetrathiafulvalenes exhibting pH–Tuneable Intramolecular Charge Transfer and Redox Properties. In: Chemistry - an Asian journal, 2009, vol. 4, n° 3, p. 392–399. doi: 10.1002/asia.200800322
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Article (Published version)
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ISSN of the journal1861-471X
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Technical informations

Creation10/02/2009 3:17:57 PM
First validation10/02/2009 3:17:57 PM
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