| Abstract: | As starting materials for the preparation of poly-4-vinyltriarylmethyl radicals the poly-4-vinyltriarylmethyl chlorides obtained from the corresponding carbinols were used. The conversion of the poly-4-vinyltriarylmethyl chlorides with zink powder leads to the corresponding carbon polyradicals only under complete exclusion of moisture. In the presence of traces of water poly-4-vinyltriarylmethyl cations are formed. The obtained poly-4-vinyltriarylmethyl radicals contain up to 100 radical electrons per macromolecule, as indicated by their e.s.r. spectra. In the presence of oxygen the carbon polyradicals form crosslinked polyperoxides; as intermediates unstable peroxiradicals can be identified by e.s.r. spectroscopy. With alkali metals the poly-4-vinyltriarylmethyl radicals form poly anions and, in case of polymers with biphenyl groups, polyradical anions. |
