Nanoparticles from Catalytic Step Growth Polymerization : Supporting Information

Materials and General Considerations. Unless noted otherwise, all manipulations of ruthenium complexes were carried out under an inert atmosphere using standard glovebox or Schlenk techniques. Toluene was distilled from sodium under argon. Demineralised water was distilled under nitrogen and degassed three times after distillation. Ruthenium alkylidenes 2 and 3 were supplied by Aldrich. NMR spectra were recorded on a Varian Unity INOVA 400 or on a Bruker AC 250 spectrometer. H and C NMR chemical shifts were referred to the solvent signal. Dynamic light scattering was carried out on a Malvern Nano-ZS ZEN 3600 particle sizer (173° back scattering). The autocorrelation function was analyzed using the Malvern dispersion technology software 3.30 algorithm to obtain volume and number weighted particle size distributions. For the determination of particle size, a few drops of a latex sample were diluted with ca. 3 mL of water. TEM images were obtained on a Zeiss Libra 120 instrument (acceleration voltage 120 keV). Dispersions were dialyzed for TEM analysis to remove any free surfactant, and applied to a copper grid. Samples were not contrasted. Absorption spectra were recorded on a Varian Cary 50 spectrometer. Fluorescence spectra were obtained on a tailor-made setup consisting of a xenon flash lamp, a monochromator (Oriel 77250 1/8M), a spectrograph and a nitrogen-cooled CCD camera enabling photoluminescence detection from 310 nm to 940 nm. Excitation wavelengths were chosen according to the respective absorption maxima.