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Title: Enhanced photoluminescence of Si nanocrystals-doped cellulose nanofibers by plasmonic light scattering

We report the development of bio-compatible cellulose nanofibers doped with light emitting silicon nanocrystals and Au nanoparticles via facile electrospinning. By performing photoluminescence (PL) spectroscopy as a function of excitation wavelength, we demonstrate plasmon-enhanced PL by a factor of 2.2 with negligible non-radiative quenching due to plasmon-enhanced scattering of excitation light from Au nanoparticles to silicon nanocrystals inside the nanofibers. These findings provide an alternative approach for the development of plasmon-enhanced active systems integrated within the compact nanofiber geometry. Furthermore, bio-compatible light-emitting nanofibers prepared by a cost-effective solution-based processing are very promising platforms for biophotonic applications such as fluorescence sensing and imaging.
Authors:
 [1] ;  [2] ;  [3] ;  [4] ;  [5] ; ; ;  [6] ;  [1] ;  [7]
  1. Department of Electrical and Computer Engineering and Photonics Center, Boston University, 8 Saint Mary Street, Boston, Massachusetts 02215 (United States)
  2. (Japan)
  3. Division of Materials Science and Engineering, Boston University, 15 Saint Mary's Street, Brookline, Massachusetts 02446 (United States)
  4. Department of Chemistry and Photonics Center, Boston University, Boston, Massachusetts 02215 (United States)
  5. Department of Electrical and Electronic Engineering, Graduate School of Engineering, Kobe University, Rokkodai, Nada, Kobe 657-8501 (Japan)
  6. Department of Biomedical Engineering and Department of Physics, Tufts University, 4 Colby Street, Medford, Massachusetts 02155 (United States)
  7. (United States)
Publication Date:
OSTI Identifier:
22486368
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 107; Journal Issue: 4; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; CELLULOSE; DOPED MATERIALS; EXCITATION; FLUORESCENCE; LIGHT SCATTERING; NANOFIBERS; NANOPARTICLES; PHOTOLUMINESCENCE; QUENCHING; SILICON; SPECTROSCOPY; VISIBLE RADIATION; WAVELENGTHS