ADMET Polymerization as a Route to Functionalized Polycarbosilanes

• Published in: Macromolecular chemistry and physics Vol. 204; no. 1; pp. 32 - 39
• Main Authors: Church, A. Cameron, Pawlow, James H., Wagener, K. B.
• Format: Journal Article
• Language: English
• Published: Weinheim WILEY-VCH Verlag 01.01.2003; WILEY‐VCH Verlag; Wiley
• Subjects: ADMET; Applied sciences; carbosilane polymers; Exact sciences and technology; Inorganic and organomineral polymers; metathesis; organosilicon polymers; Physical Sciences; Physicochemistry of polymers; polycarbosilanes; polycondensation; Polymer Science; Preparation; Science & Technology; step growth polymerization; OPENING METATHESIS POLYMERIZATION; MECHANISM; carbosilane polymers; polycarbosilanes; step growth polymerization; ADMET; ALKOXY; polycondensation; organosilicon polymers; metathesis; POLY(SILYLENEMETHYLENES); CHEMISTRY; COPOLYMERIZATION; CATALYSTS; Silane copolymer; Metathesis polymerization; Preparation; Unsaturated copolymer; Organic silane; Complex catalyst polymerization; Dienic compound; Experimental study; Alkenamer copolymer; Ruthenium complex
• ISSN: 1022-1352; 1521-3935
• DOI: 10.1002/macp.200290053

It is now evident that ADMET chemistry can be employed to prepare a family of unsaturated carbosilane polymers containing a common backbone decorated with different alkoxysilane pendant groups, demonstrating the generality and potential utility of this chemistry. Four functionalized silicon containing dienes have been synthesized by nucleophilic substitution of the same parent diene monomer containing two reactive silicon‐chlorine bonds. These new α,ω‐diene monomers have been polymerized under ADMET conditions using the 2nd generation Grubbs's ruthenium catalyst, producing polymers with useful molecular weights. Variation of the pendant group results in differing chemical and physical properties of the resulting polymers. We believe this chemistry offers much to broaden the synthetic pathways to new organosilicon polymers.