Polydiacetylene Nanotubes in Heterogeneous Catalysis: Application to the Gold-Mediated Oxidation of Silanes

摘要

A layer-by-layer approach is used to anchor small gold nano-particles onto organic nanotubes resulting from the self-assembly and polymerization of diacetylene-containing nitrilotriacetic amphiphiles. The obtained nanotube-gold hybrid is used as a catalyst for the aerobic oxidation of various silanes. With minimal gold loading (0.05 mol), all substrates are converted into the corresponding silanols with hydrogen gas as the only by-product. The catalyst operates under mild conditions and can be easily recycled, losing neither activity nor selectivity.