Orthogonal Self-Assembly on Colloidal Gold-Platinum Nanorods

Abstract

The preparation of micrometer to nanometer-sized building blocks that can be selectively derivatized is reported here. Segmented multi-metal rods of controllable length (see Cover) were fabricated by electroplating in porous template membranes. Additionally it is shown how the surface chemistry of different parts within a single particle can be controlled by means of orthogonal self-assembly. Exploiting of the different reactivities of Pt and Au towards thiols and isocyanides leads to the observation of fluorescence from only the Au segments of the rods.