Self-assembled structures are widespread in nature and are a key feature of many biological small-molecule recognition motifs. Not surprisingly, therefore, considerable effort has been devoted to developing synthetic self-assembled receptor systems, multicomponent molecular hosts that are able to[*] Dr.

The synthesis of novel donor-p-acceptor dyads based on a pyrrolo-annelated tetrathiafulvalene unit is described. The linear and non-linear optical properties of these chromophores have been investigated, together with their redox properties. For a dyad containing a p-nitrophenyl acceptor group, a significant third-order optical non-linearity is observed.

Self-assembled structures are widespread in nature and are a key feature of many biological small-molecule recognition motifs. Not surprisingly, therefore, considerable effort has been devoted to developing synthetic self-assembled receptor systems, multicomponent molecular hosts that are able to[*] Dr.

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.

No abstract