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Solid luminescent CdSe‐thiolated porous phosphate heterostructures. Application in fingermark detection in different surfaces
Author(s) -
Algarra M.,
JiménezJiménez J.,
Miranda M. S.,
Campos B. B.,
MorenoTost R.,
RodriguezCastellón E.,
Esteves da Silva J. C. G.
Publication year - 2013
Publication title -
surface and interface analysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.52
H-Index - 90
eISSN - 1096-9918
pISSN - 0142-2421
DOI - 10.1002/sia.5100
Subject(s) - x ray photoelectron spectroscopy , materials science , cadmium selenide , transmission electron microscopy , fourier transform infrared spectroscopy , chemical engineering , luminescence , nanocomposite , fluorescence , nanoparticle , aqueous solution , spectroscopy , nanotechnology , chemistry , quantum dot , optoelectronics , optics , organic chemistry , physics , quantum mechanics , engineering
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 CdS 0.42 Se 0.58 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.