Orthogonal Self-Assembly on Colloidal Gold-Platinum Nanorods (pages 1021–1025)
Benjamin R. Martin, Daniel J. Dermody, Brian D. Reiss, Mingming Fang, L. Andrew Lyon, Michael J. Natan and Thomas E. Mallouk
Article first published online: 18 AUG 1999 | DOI: 10.1002/(SICI)1521-4095(199908)11:12<1021::AID-ADMA1021>3.0.CO;2-S
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.