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Portrait of Jonas Tegenfeldt. Photo: Kennet Ruona

Jonas Tegenfeldt

Professor, Coordinator Nanobiology & Neuronanoscience

Portrait of Jonas Tegenfeldt. Photo: Kennet Ruona

Fluorescent Nanowire Heterostructures as a Versatile Tool for Biology Applications

Author

  • Karl Adolfsson
  • Henrik Persson
  • Jesper Wallentin
  • Stina Oredsson
  • Lars Samuelson
  • Jonas Tegenfeldt
  • Magnus Borgström
  • Christelle Prinz

Summary, in English

Nanowires are increasingly used in biology, as sensors, as injection devices, and us model systems for toxicity studies. Currently, in situ visualization of nanowires in biological media is done using organic dyes, which a;:e prone to photobleaching, or using microscopy methods which either yield poor resolution or require a sophisticated setup. Here we show that inherently fluorescent nanowire axial heterostructnies c:an be used to localize and identify nanowires in cells and tissue; By synthesizing GaP GaInP nanowire heterostructures, with nonfluorescent GaP segments and fluorescent GaInP segments, we created a barcode labeling system enabling the distinction of the nanowire morphological and chemical properties using fluorescence microscopy. The GaInP photoluminescence stability, combined with the fact that the nanowires can be coated with different materials while retaining their fluorescence, make these nanowires promising tools for biological and nanotoxicological studies.

Department/s

  • Solid State Physics
  • Functional zoology
  • Neuronano Research Center (NRC)
  • NanoLund
  • BioCARE: Biomarkers in Cancer Medicine improving Health Care, Education and Innovation

Publishing year

2013

Language

English

Pages

4728-4732

Publication/Series

Nano Letters

Volume

13

Issue

10

Document type

Journal article

Publisher

The American Chemical Society (ACS)

Topic

  • Nano Technology

Keywords

  • Nanowires
  • fluorescence
  • photoluminescence
  • photobleaching
  • cells
  • toxicology

Status

Published

Research group

  • Neuronano Research Center (NRC)

ISBN/ISSN/Other

  • ISSN: 1530-6992