Double helical silica fibrils by sol–gel transcription of chiral aggregates of gemini surfactants
K Sugiyasu, S Tamaru, M Takeuchi, D Berthier… - Chemical …, 2002 - pubs.rsc.org
Chemical communications, 2002•pubs.rsc.org
… After trial-and-error, we found that the fibers of certain ‘cationic’ cholesterol derivatives gelate
a tetraethoxysilane (TEOS) solution and are efficiently transcribed to give a novel mesoporous
silica with a tubular, macaroni-like structure. Condensation of anionic … Meanwhile, the French
group of this paper reported that ‘cationic’ gemini surfactants having chiral tartrate counter
ions assemble into twisted ribbons both in chlorinated and aromatic organic solvents, and in
water. The handedness of the ribbons and their … Here, we report on the sol–gel transcritpion …
a tetraethoxysilane (TEOS) solution and are efficiently transcribed to give a novel mesoporous
silica with a tubular, macaroni-like structure. Condensation of anionic … Meanwhile, the French
group of this paper reported that ‘cationic’ gemini surfactants having chiral tartrate counter
ions assemble into twisted ribbons both in chlorinated and aromatic organic solvents, and in
water. The handedness of the ribbons and their … Here, we report on the sol–gel transcritpion …
Silica fibrils with a novel double stranded helical structure are prepared by sol–gel transcription of twisted bilayer ribbons formed by cationic gemini surfactants.
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