Self-Assembly of Organically-Bridged Lamellar Hybrids from Alkoxy-Derivatives of Bis-trichlorosilane Precursors

Abstract

Novel lamellar hybrids with bridging organic groups were prepared from Cl3Si-R-SiCl2-OC16H33 (R: -CH2-, -C2H4-, or -C6H4-) which were synthesized by the reaction of Cl3Si-R-SiCl3 with C16H33OH. The formation relies on the self-assembly of (OH)3Si-R-Si(OH)2-OC16H33 generated by the preferential hydrolysis of Si-Cl groups. The precursors with -CH2- and -C2H4- spacers formed layered structures consisting of alcohols and siloxane layers. On the other hand, when the spacer was -C6H4-, polycondensation between silanol groups rarely occurred and the resulting product was composed of bimolecular layers of hydrolyzed molecules.