Synthesis metallated polydiacetylenes

The synthesis of polydiacetylenes with bipyridine metal complexes in their sidechains has been achieved by Lindsell and cowoikers (Scheme 17). Complexes of nickel, copper, ruthenimn, and molybdenum were synthesized and the nonlinear optical properties of the resulting polymers examined. 

The synthesis and characterization of polyacetylene (PA) provided new incentive for understanding 7r-electronic spectra, electron-phonon interactions and electronic correlations[l, 2, 14]. The electrical conductivity of chemically doped PA rivals that of metals. Families in Fig. 2 such as polydiacetylenes (PDAs), poly thiophenes (PTs), cr-conjugated polysilane (PSs) and polyparaphenylene vinylene (PPVs), among... 

Camacho, M.A., Kar, A.K., Lindsell, W.E.. Murray, C., Preston, P.N., Wherrett, B.S. Synthesis and nonlinear optical properties of functionalized polydiacetylenes and their complexes with transition metals. J. Mater. Chem. 9, 1251-1256 (1999)... 

Hybrid synthesis approaches based on first convective and second dielectric heating allowed to fabricate core-shell NCs composed of 50 nm Ag cores and 5 nm of polydiacetylene (PADA) shell. Ag is initially reduced in aqueous sodium citrate solution then in a second step uniform and concentric PADA precipitation on metal seed is MW-promoted (Fig. 10.11c). 

---