Orthogonal self-assembly on colloidal gold-platinum nanorods

Benjamin R. Martin, Daniel J. Dermody, Brian D. Reiss, Mingming Fang, L. Andrew Lyon, Michael J. Natan, Thomas E. Mallouk

Research output: Contribution to journalArticlepeer-review

465 Scopus citations

Abstract

Striped, bimetallic Au-Pt-Au rod-shaped colloidal particles were fabricated. The different chemical reactivities of Pt and Au towards thiols and isocyanides were found to influence spatially-selective chemical modification within individual nanoparticles. The preparation and chemical manipulation of anisotropic colloidal building blocks represent a first step towards anisotropic mesoscale assembly and other materials chemistry applications. It is possible to make segmented multi-metal rods of controllable length by electroplating in a porous template membrane. It is also possible to control the surface chemistry of different metals within a single colloidal particle, after it has been released from the membrane, by means of orthogonal self-assembly.

Original languageEnglish (US)
Pages (from-to)1021-1025
Number of pages5
JournalAdvanced Materials
Volume11
Issue number12
DOIs
StatePublished - 1999

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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