1. Synthesis and Doping of a Multifunctional Tetrathiafulvalene- Substituted Poly(isocyanide)
- Author
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Laurent Mugica, Jaume Veciana, Juan T. López Navarrete, Juan Casado, José Vidal-Gancedo, David B. Amabilino, Concepció Rovira, and Elba Gomar-Nadal
- Subjects
Valence (chemistry) ,Polymers and Plastics ,Isocyanide ,Organic Chemistry ,Doping ,Photochemistry ,law.invention ,Inorganic Chemistry ,chemistry.chemical_compound ,Radical ion ,chemistry ,law ,Materials Chemistry ,Side chain ,Electron paramagnetic resonance ,Tetrathiafulvalene ,Macromolecule - Abstract
The poly(isocyanide) skeleton is shown to be a good support for assemblies of molecular units which permit p-type charge transport. A poly(isocyanide) containing tetrathiafulvalene (TTF) moieties in the side chains has been synthesized and characterized in its neutral state and has been oxidized to generate mixed valence states which display charge mobility in solution. UV−vis−NIR, EPR, and Raman spectroscopies were used to study the electronic properties of the polymer in its doped states, which were generated chemically with different oxidants. A broad charge-transfer band at 2100 nm characteristic of mixed valence agglomerations of neutral and cation radical TTFs was shown at lower doping levels, while evidence of aggregates between radical cation and the dicationic form of the heterocyclic system were seen at higher degrees of oxidation. The neutral macromolecule, the first mixed valence state, and the cation radical system can be reversibly interconverted by alternate oxidation with Fe(ClO4)3 and sub...
- Published
- 2007