Non-toxic luminescent carbon dot/poly (dimethylacrylamide) nanocomposite reagent for latent fingermark detection synthesized via surface initiated reversible addition fragmentation chain transfer polymerization

Jessirie Dilag, Hilton Kobus, Yang Yu, Christopher Gibson, Amanda Ellis

    Research output: Contribution to journalArticlepeer-review

    19 Citations (Scopus)

    Abstract

    Here, non-toxic luminescent carbon nanoparticles, namely carbon dots (C-dots), were facilely synthesized via a one-pot hydrothermal route. Raman, Fourier transform infrared, fluorescence, carbon NMR and X-ray photoelectron spectroscopies revealed that the C-dots possessed a graphitic-like core with an oxidized surface. The oxidized surface of the C-dots allowed for functionalization of the C-dots with a 2-methyl-2-[(dodecylsulfanylthiocarbonyl)sulfanyl]propanoic acid chain transfer agent. Poly(N,N-dimethylacrylamide) (p(DMA)) was then grafted from the C-dot surface via surface initiated reversible addition fragmentation chain transfer (RAFT) polymerization. The resulting luminescent C-dot/polymer nanocomposite, C-dot/p(DMA), was analyzed using UV-visible and fluorescence spectrometry verifying that the functionalized surface was responsible for the C-dots' luminescence. This C-dot/p(DMA) nanocomposite was water soluble and was used as a solution for the luminescent detection of latent fingermarks deposited on non-porous aluminium foil substrates.

    Original languageEnglish
    Pages (from-to)884-891
    Number of pages8
    JournalPolymer International
    Volume64
    Issue number7
    Early online date2015
    DOIs
    Publication statusPublished - 1 Jul 2015

    Keywords

    • Carbon
    • Fingermark detection
    • Forensic science
    • Nanoparticle
    • RAFT polymerization

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