Copoly[2,2⬘-bis[1,1⬘-ferrocene]benzoylylene/3,3,5,5-tetramethyl-4-oxa-3,5-disila-1,7-heptanylene] (III) was synthesized by two approaches. High molecular weight III was obtained by an acid catalyzed equilibrium condensation of 1,1⬘-bis[1-(3⬘,3⬘,5⬘,5⬘-tetramethyl4-oxa-3,5-disilahexyl)benzoyl] ferrocene (IV), while lower molecular weight III was synthesized by the dihydridocarbonyltris(triphenylphosphine)ruthenium (Ru) catalyzed co-oligomerization of 1,1⬘-benzoylferrocene and 1,3-divinyltetramethyl-disiloxane. Ru catalyzed reaction of benzoylferrocene and 1,3-divinyltetramethyl-disiloxane gave 1-[2⬘-ferrocenoylphenethyl]-3-vinyltetramethyl-disiloxane (II), 1,3-bis[2⬘-ferrocenoyl phenethyl]tetramethyldisiloxane (I). The electrochemistry of I, III, and IV have been examined by cyclic voltammetry. These materials show a single reversible oxidation process. The products have been characterized by 1H, 13C, 29Si NMR, IR, UV–Vis spectroscopy, as well as elemental analysis and/or high resolution mass spectrometry with peak matching. GPC, DSC and TGA of the copolymer and co-oligomer III have been determined.
Посилання на статтю:
Synthesis and characterization of novel heteroannular benzoylferrocene polysiloxane monomers, oligomers, and polymers / Jonathan R. Sargent, William P. Weber // Polymer. – 1999. – N 40. – P. 3795–3802.