Effect of Alcohol Chain Length on Formation of Cetyltrimethylammonium Bromide-templated Mesoporous Silica Layer on Gold Nanorods

摘要

This is the first study that elucidates the effect of alcohol alkyl chain length on the formation of mesoporous silica (mSi02) layers on cetyltrimethylammonium bromide (CTAB)-stabilized gold nanorods (CGNRs). The growth tendencies of the mSi02 layers on the CGNRs (CGNR@mSi02) in various alcohol solvents differed quite substantially from those observed for previously reported spherical silica particles. The formation of the raSi02 layer was closely related to the interaction between the CTAB bilayer and alcohol.