Assembly of Gold Nanoparticles on Gold Nanorods Using Functionalized Poly(N-isopropylacrylamide) as Polymeric “Glue”

Research output: Contribution to journalResearch articleContributedpeer-review

Contributors

  • Ziyin Fan - , University of Bayreuth (Author)
  • Moritz Tebbe - , University of Bayreuth (Author)
  • Andreas Fery - , Chair of Physical Chemistry of Polymeric Materials, Leibniz Institute of Polymer Research Dresden (Author)
  • Seema Agarwal - , University of Bayreuth (Author)
  • Andreas Greiner - , University of Bayreuth (Author)

Abstract

A telechelic thermoresponsive polymer, α-amino-ω-thiol-poly(N-isopropylacrylamide) (H2N-PNiPAM-SH), is used as the polymeric glue to assemble gold nanoparticles (AuNPs) around gold nanorods (AuNRs) into a satellite structure. Prepared by reversible addition-fragmentation chain transfer polymerization followed by hydrazinolysis, H2N-PNiPAM-SH is able to interlink the two types of the gold building blocks with the thiol-end grafting on AuNRs and the amine-end coordinating on the AuNP surface. The density of the grafted AuNPs on AuNRs can be tuned by adjusting the molar ratio between AuNPs and AuNRs in the feed. The resulted satellite-like assembly exhibits unique optical property that was responsive to temperature change.

Details

Original languageEnglish
Pages (from-to)698-702
Number of pages5
JournalParticle and Particle Systems Characterization
Volume33
Issue number9
Publication statusPublished - 1 Sept 2016
Peer-reviewedYes

Keywords

Keywords

  • gold, nanoparticles, nanorods, polymer conjugate