Surface plasmon enhanced fluorescence of cationic conjugated polymer on periodic nanoarrays

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

13 Scopus Citations
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Author(s)

  • Kirsty Leong
  • Melvin T. Zin
  • Hong Ma
  • Mehmet Sarikaya
  • Fei Huang

Detail(s)

Original languageEnglish
Pages (from-to)3153-3159
Journal / PublicationACS Applied Materials and Interfaces
Volume2
Issue number11
Publication statusPublished - 24 Nov 2010
Externally publishedYes

Abstract

The fluorescence from conjugated polymer assembled onto lithographically fabricated gold nanoarrays using genetically engineered peptides as molecular linkers is studied. A 16-fold increase in the photoluminescence of the conjugated polymer is observed when assembled on the optimized nanostructures due to surface plasmon enhanced fluorescence. This is achieved using a water-soluble cationic conjugated polymer, poly[(9,9-bis(6′-((N,N,N- trimethylammonium)hexyl)-2,7-fluorene)-co-4,7-di-2-thienyl-2,1, 3-benzothiadiazole] dibromide (PFDBT-N+), systematically tuning the vertical distance of PFDBT-N+ from the gold nanopillar surface using solid-specific peptide linkers and horizontally optimizing the localized surface plasmon resonance by varying the geometric arrangements of the patterned metal nanoarrays. The diameter and tip-to-tip spacing of the nanopillars along with vertically tuning the distance of PFDBT-N+ from the nanopillar affected the observed fluorescence enhancements. The collective optical properties of conjugated polymers combined with the photonic properties of nanoparticles provide a new means in the development of metal enhanced hybrid nanomaterials for biotechnology. © 2010 American Chemical Society.

Research Area(s)

  • conjugated polymer, hybrid nanostructure, metal-enhanced fluorescence, surface plasmon resonance

Citation Format(s)

Surface plasmon enhanced fluorescence of cationic conjugated polymer on periodic nanoarrays. / Leong, Kirsty; Zin, Melvin T.; Ma, Hong et al.
In: ACS Applied Materials and Interfaces, Vol. 2, No. 11, 24.11.2010, p. 3153-3159.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review