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  • Luminescence detection of latent fingermarks on non-porous surfaces with heavy-metal-free quantum dots

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    Chen359952-Accepted.pdf (7.876Mb)
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    Accepted Manuscript (AM)
    Author(s)
    Shahbazi, S
    Boseley, R
    Grant, B
    Chen, D
    Becker, T
    Adegoke, O
    Nic Daéid, N
    Jia, G
    Lewis, SW
    Griffith University Author(s)
    Chen, Dechao
    Year published
    2020
    Metadata
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    Abstract
    Current and proposed nanoparticle-based techniques for development of latent fingermarks suffer a number of drawbacks such as complicated, multi-step and time-consuming procedures, batch-to-batch variability, expensive reagents, large background noise and toxicity. Here, we introduce a promising green development technique based on heavy-metal-free quantum dots for the detection of latent fingermarks on non-porous surfaces. Red-near infrared luminescent CuInS2/ZnS core/shell quantum dots in aqueous solution were produced in large scales using a simple, fast, water-based method with N-acetylcysteine as a biocompatible surfactant ...
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    Current and proposed nanoparticle-based techniques for development of latent fingermarks suffer a number of drawbacks such as complicated, multi-step and time-consuming procedures, batch-to-batch variability, expensive reagents, large background noise and toxicity. Here, we introduce a promising green development technique based on heavy-metal-free quantum dots for the detection of latent fingermarks on non-porous surfaces. Red-near infrared luminescent CuInS2/ZnS core/shell quantum dots in aqueous solution were produced in large scales using a simple, fast, water-based method with N-acetylcysteine as a biocompatible surfactant to coat the particles. The coated quantum dots were applied to the successful development of latent fingermarks deposited on a variety of surfaces, including highly patterned polymer banknotes and the sticky side of adhesive tape.
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    Journal Title
    Forensic Chemistry
    Volume
    18
    DOI
    https://doi.org/10.1016/j.forc.2020.100222
    Copyright Statement
    © 2020 Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International Licence (http://creativecommons.org/licenses/by-nc-nd/4.0/) which permits unrestricted, non-commercial use, distribution and reproduction in any medium, providing that the work is properly cited.
    Subject
    Chemical sciences
    Other chemical sciences
    Publication URI
    http://hdl.handle.net/10072/397395
    Collection
    • Journal articles

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