Distance control in-between plasmonic nanoparticles via biological and polymeric spacers

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

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Author(s)

  • Xiang Yu
  • Faheem Amin
  • Raimo Hartmann
  • Guillermo P. Acuna
  • Andrés Guerrero-Martínez
  • Stefan A. Maier
  • Philip Tinnefeld
  • Susana Carregal-Romero
  • Wolfgang J. Parak

Detail(s)

Original languageEnglish
Pages (from-to)480-493
Journal / PublicationNano Today
Volume8
Issue number5
Online published3 Oct 2013
Publication statusPublished - Oct 2013
Externally publishedYes

Abstract

For detailed experimental studies about the electromagnetic coupling between plasmonic nanoparticles, precisely-controlled nanoparticle groupings with adjustable inter-particle distance would be required. In the present review article, the possibilities of generating such groupings by using biological and polymeric spacers in between the nanoparticles are described. In particular, streptavidin-biotin and DNA are discussed as biological spacers, and layer-by-layer (LbL) assembled films as polymeric spacers. The concepts are visualized by experimental data, which also point out the pitfalls and current limits of such approaches. Calculation results reveal that while small variations in the diameter of plasmonic cores lead to small changes, small variations in the inter-particle distance due to soft linkers result in significant changes in plasmonic coupling. In the case of protein-based spacers, nonspecific adsorption has to be considered as an obstacle for the formation of controlled groupings.

Research Area(s)

  • Biological linkers, Colloidal nanoparticles, Plasmonics, Polymeric linkers, Size distribution

Citation Format(s)

Distance control in-between plasmonic nanoparticles via biological and polymeric spacers. / Yu, Xiang; Lei, Dang Yuan; Amin, Faheem; Hartmann, Raimo; Acuna, Guillermo P.; Guerrero-Martínez, Andrés; Maier, Stefan A.; Tinnefeld, Philip; Carregal-Romero, Susana; Parak, Wolfgang J.

In: Nano Today, Vol. 8, No. 5, 10.2013, p. 480-493.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal