Journal
MACROMOLECULAR RAPID COMMUNICATIONS
Volume 29, Issue 14, Pages 1226-1230Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/marc.200800154
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Funding
- Engineering and Physical Sciences Research Council [EP/E041337/1, EP/E036244/1, EP/E027431/1] Funding Source: researchfish
- EPSRC [EP/E036244/1, EP/E041337/1, EP/E027431/1] Funding Source: UKRI
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A series of new conjugated copolymers incorporating the redox-active pyrrolo-TTF unit has been synthesised. The properties of the polymers have been investigated by cyclic voltammetry and electronic absorption spectroscopy, revealing that the pyrrolo-TTF behaves very differently to its thieno-TTF variant. In comparison to thieno analogues, the band gaps of the new polymers are wider than expected due to a decrease in the polarizability of the heteratom (nitrogen vs. sulfur) and steric interactions between repeat units. Whilst the pyrrolo-TTF units are stronger electron donors than thieno-TTFs in related structures, the two redox active elements of the new polymers (TTF and conjugated chain) function independently under oxidative conditions.
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