• myGriffith
    • Staff portal
    • Contact Us⌄
      • Future student enquiries 1800 677 728
      • Current student enquiries 1800 154 055
      • International enquiries +61 7 3735 6425
      • General enquiries 07 3735 7111
      • Online enquiries
      • Staff phonebook
    View Item 
    •   Home
    • Griffith Research Online
    • Journal articles
    • View Item
    • Home
    • Griffith Research Online
    • Journal articles
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Browse

  • All of Griffith Research Online
    • Communities & Collections
    • Authors
    • By Issue Date
    • Titles
  • This Collection
    • Authors
    • By Issue Date
    • Titles
  • Statistics

  • Most Popular Items
  • Statistics by Country
  • Most Popular Authors
  • Support

  • Contact us
  • FAQs
  • Admin login

  • Login
  • Controllable Synthesis of Carbon Dots with Excitation-Wavelength-Dependent or Independent Photoluminescence for the Selective and Sensitive Detection of Co2+ Ions

    Author(s)
    Wang, Lanhui
    Lin, Kui
    Trinchi, Adrian
    Cole, Ivan S
    Tian, Fei
    Griffith University Author(s)
    Cole, Ivan
    Year published
    2018
    Metadata
    Show full item record
    Abstract
    Fluorescent carbon dots (CDs) with excitation-wavelength-dependent and excitation-wavelength-independent emission have been prepared with varying amounts citric acid (CA), ethylenediamin end-capped polyethylenimine (PEI-EC) and sodium borohydride (NaBH 4 ), their structure, optical and chemical sensing properties have been also systematically investigated. The varying of NaBH 4 and PEI-EC renders the structure and surface state change as well as photoluminescence (PL) properties. The results indicated that NaBH 4 made the CDs sensitive to Co 2+ ions, whilst the PEI-EC served to increase their sensitivity. The synergistic ...
    View more >
    Fluorescent carbon dots (CDs) with excitation-wavelength-dependent and excitation-wavelength-independent emission have been prepared with varying amounts citric acid (CA), ethylenediamin end-capped polyethylenimine (PEI-EC) and sodium borohydride (NaBH 4 ), their structure, optical and chemical sensing properties have been also systematically investigated. The varying of NaBH 4 and PEI-EC renders the structure and surface state change as well as photoluminescence (PL) properties. The results indicated that NaBH 4 made the CDs sensitive to Co 2+ ions, whilst the PEI-EC served to increase their sensitivity. The synergistic roles that both NaBH 4 and PEI-EC played on the selective and sensitive detection of Co 2+ were achieved via a simple adjustment of the mass ratios during synthesis. Furthermore, the PL intensity was gradually recovered until completely restored with the addition of chelating agent ethylenediaminetetraacetic acid (EDTA) to the Co 2+ quenched CDs solutions. This work provided quantitatively preparation and controllable synthesis of excitation-wavelength-dependent or independent CDs for the development of PL based sensors.
    View less >
    Journal Title
    ChemistrySelect
    Volume
    3
    Issue
    42
    DOI
    https://doi.org/10.1002/slct.201802784
    Subject
    Chemical sciences
    Science & Technology
    Physical Sciences
    Chemistry, Multidisciplinary
    Chemistry
    Carbon dots
    Publication URI
    http://hdl.handle.net/10072/387531
    Collection
    • Journal articles

    Footer

    Disclaimer

    • Privacy policy
    • Copyright matters
    • CRICOS Provider - 00233E

    Tagline

    • Gold Coast
    • Logan
    • Brisbane - Queensland, Australia
    First Peoples of Australia
    • Aboriginal
    • Torres Strait Islander