Premium
Imidazole‐Annulated Tetrathiafulvalenes Exhibiting pH‐Tuneable Intramolecular Charge Transfer and Redox Properties
Author(s) -
Wu Jincai,
Dupont Nathalie,
Liu ShiXia,
Neels Antonia,
Hauser Andreas,
Decurtins Silvio
Publication year - 2009
Publication title -
chemistry – an asian journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.18
H-Index - 106
eISSN - 1861-471X
pISSN - 1861-4728
DOI - 10.1002/asia.200800322
Subject(s) - imidazole , intramolecular force , tetrathiafulvalene , moiety , acceptor , protonation , titration , chemistry , absorption spectroscopy , photochemistry , redox , electrochemistry , inorganic chemistry , stereochemistry , molecule , organic chemistry , ion , electrode , physics , quantum mechanics , condensed matter physics
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 p K a 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 p K a 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.