Atomic force microscopy nanomanipulation of shape persistent, spherical, self-assembled aggregates of gold nanoparticles

J. Herrikhuyzen, van, R. Willems, S.J. George, C.F.J. Flipse, J.C. Gielen, P.C.M. Christianen, A.P.H.J. Schenning, S.C.J. Meskers

Research output: Contribution to journalArticleAcademicpeer-review

5 Citations (Scopus)

Abstract

Gold (Au) nanoparticles have been synthesized that are stabilized by an organic ligand bearing a dithiolane functional group for binding to Au, an oligo(p-phenylene vinylene) (OPV) chromophoric group to drive self-assembly via p-p interactions, and a hydroxy functionality for interparticle hydrogen bonding. The OPV-Au particles reversibly self-assemble in n-heptane solution, forming shape persistent, spherical, nanometer-sized aggregates that do not collapse on a substrate. Optical absorption and transmission electron microscopy tomography studies show that the size and shape persistency can be tuned by modification of the ligands, adjustment of the core size, and variation of the concentration. The spherical assemblies can be manipulated with the tip of an atomic force microscope: an aggregate can be pushed over the surface for at least 20 times with nanometer precision and without substantial loss of material.
Original languageEnglish
Pages (from-to)6501-6508
Number of pages8
JournalACS Nano
Volume4
Issue number11
DOIs
Publication statusPublished - 2010

Fingerprint Dive into the research topics of 'Atomic force microscopy nanomanipulation of shape persistent, spherical, self-assembled aggregates of gold nanoparticles'. Together they form a unique fingerprint.

Cite this