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Solid luminescent CdSe-thiolated porous phosphate heterostructures. Application in fingermark detection in different surfaces

Authors

  • M. Algarra,

    Corresponding author
    • Centro de Geologia da Universidade do Porto e Departamento de Geociências, Ambiente e Ordenamento do Território do Porto Faculdade de Ciências da, Universidade do Porto, Porto, Portugal
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  • J. Jiménez-Jiménez,

    1. Departamento de Química Inorgânica, Facultad de Ciencias, Universidad de Málaga, Málaga, Spain
    2. Universidad Internacional de Andalucía, Sede Tecnológica de Málaga, Málaga, Spain
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  • M. S. Miranda,

    1. Centro de Geologia da Universidade do Porto e Departamento de Geociências, Ambiente e Ordenamento do Território do Porto Faculdade de Ciências da, Universidade do Porto, Porto, Portugal
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  • B. B. Campos,

    1. Centro de Investigação em Química (CIQ-UP), Faculdade de Ciências da Universidade do Porto, Porto, Portugal
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  • R. Moreno-Tost,

    1. Departamento de Química Inorgânica, Facultad de Ciencias, Universidad de Málaga, Málaga, Spain
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  • E. Rodriguez-Castellón,

    Corresponding author
    1. Departamento de Química Inorgânica, Facultad de Ciencias, Universidad de Málaga, Málaga, Spain
    • Universidad Internacional de Andalucía, Sede Tecnológica de Málaga, Málaga, Spain
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  • J. C. G. Esteves da Silva

    1. Centro de Investigação em Química (CIQ-UP), Faculdade de Ciências da Universidade do Porto, Porto, Portugal
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E. Rodríguez-Castellón, Departamento de Química Inorgánica, Facultad de Ciencias, Universidad de Málaga, Spain.

E-mail: castellon@uma.es

Manuel Algarra, Centro de Geologia do Porto, Faculdade de Ciencias, University of Porto, Portugal

E-mail: magonzal@fc.up.pt

Abstract

A fluorescent hybrid material (PPH-S-CdSe), which comprises cadmium selenide sulphide nanoparticles assembled onto thiol functionalised porous phosphate heterostructures (PPH-SH), was synthesised in aqueous media. This material presents a high stability towards photo-degradation. The obtained nanocomposite was characterised by various techniques such as Fourier transform infrared spectroscopy, energy dispersive X-ray, transmission electron microscopy (TEM), X-ray diffraction, X-ray photoelectron spectroscopy and fluorescence spectroscopy. This fluorescent material showed a red emission at 576 nm combined with other at 473 nm, explained as different CdS0.42Se0.58 nanoparticles size, supported by TEM images. It was suitable for latent fingermark analysis in a wide range of surfaces. Because of its sensitivity and low cost, it is an actual alternative to conventional powdering materials. Copyright © 2012 John Wiley & Sons, Ltd.

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