Enhanced Local and Nonlocal Photoluminescence of Organic Rubrene Microrods using Surface Plasmon of Gold Nanoparticles: Applications to Ultrasensitive and Remote Biosensing

Hyung Suk Hwang, Seong Gi Jo, Jubok Lee, Jeongyong Kim, Jinsoo Joo

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Nonlocal photoluminescence (PL) signal transfer through semiconducting nanostructures has been intensively studied for its potential applicability in photonic circuits, optical communications, and optical sensing. In this study, organic semiconducting rubrene microrods (MRs) were synthesized and hybridized with functionalized gold nanoparticles (Au-NPs) to optimize both their optical and biosensing properties. The steady-state local PL intensity of the rubrene MR was considerably enhanced by the Au-NPs hybridization due to the energy-transfer effect from the surface plasmon (SP) coupling. It was clearly observed that the nonlocal PL signal-transfer efficiency of rubrene/Au-NPs hybrid MRs drastically increased along crystalline axes with the aid of the SP effect. The coupling of exciton polaritons in the luminescent rubrene MR with the SP as well as the scattering effect contribute to the variation of the exciton decay rate, resulting in a change in the PL signal-transfer efficiency for the hybrid MRs. The enhancement of the local and nonlocal PL emission of the rubrene/Au-NPs hybrid MRs was applied to ultrasensitive and remote biosensing. We observed PL signal transfer of fluorescent-dye attached DNA along the MR and successfully detected target-DNA with a concentration of 100 picomole using rubrene/Au-NPs/probe-DNA hybrid MR.

Original languageEnglish
Pages (from-to)11612-11620
Number of pages9
JournalJournal of Physical Chemistry C
Volume120
Issue number21
DOIs
Publication statusPublished - 2016 Jun 2

Fingerprint

Gold
Photoluminescence
gold
Nanoparticles
photoluminescence
nanoparticles
DNA
deoxyribonucleic acid
Excitons
excitons
DNA Probes
Optical communication
Fluorescent Dyes
polaritons
Energy transfer
Photonics
decay rates
optical communication
rubrene
Nanostructures

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Electronic, Optical and Magnetic Materials
  • Surfaces, Coatings and Films
  • Energy(all)

Cite this

Enhanced Local and Nonlocal Photoluminescence of Organic Rubrene Microrods using Surface Plasmon of Gold Nanoparticles : Applications to Ultrasensitive and Remote Biosensing. / Hwang, Hyung Suk; Jo, Seong Gi; Lee, Jubok; Kim, Jeongyong; Joo, Jinsoo.

In: Journal of Physical Chemistry C, Vol. 120, No. 21, 02.06.2016, p. 11612-11620.

Research output: Contribution to journalArticle

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