Abstract
The functionalisation of tetrathiafulvalene with thiophene units is reported via the synthesis of two multiredox compounds 4 and 5. The two molecules represent a fused structure (4) and a TTF-thiophene system directly linked by a single bond (5); both compounds are endowed with 'free' 2,5-positions within the thiophene ring, making them accessible to polymerisation reactions. The solution electrochemistry of 4 and 5 reveals the redox properties of the two components: a three-stage oxidation process is seen in each case. Charge-transfer complexes have been prepared, using TCNQ or TCNQF(4) as the electron acceptor, with conductivities in the range of 10(-4) to 0.22 S cm(-1). Compounds 4 and 5 have been studied by X-ray crystallography; the former exhibits kappa-packing whilst the latter shows a high degree of conjugation between the two donor moieties.
| Original language | English |
|---|---|
| Pages (from-to) | 1719-1724 |
| Number of pages | 5 |
| Journal | Journal of Materials Chemistry |
| Volume | 8 |
| Issue number | 8 |
| DOIs | |
| Publication status | Published - Aug 1998 |
Keywords
- electron-donor
- conducting polymers
- charge-transfer
- organic metals
- ttf
- derivatives
- chemistry
- electropolymerization
- polythiophenes
- substituents