Abstract
Nanocomposite films grown on a silica slide substrate are a suitable model for developing and, eventually, improving optical devices. Here optical properties of silver nanoparticle (AgNP) films coated with Eu3+ complex, grown directly on a silica slide substrate, were studied. The growth of the film was done by functionalizing the silica slide surface with an organosilane molecule, 3-Aminopropyltriethoxysilane (APTES), by covalent bonding, followed by Ag+ interaction with subsequent reduction process, resulting in a yellow film typical of silver nanoparticles (NPs). Then, in the next step, to form the nanocomposite, the AgNP film was coated with the Eu3+ complex. The X-ray diffraction (XRD) peak characteristic of silver in the cubic face-centered phase (plane 111) was identified and transmission electron microscopy (TEM) images confirmed that AgNPs bound to the silica substrate. The UV–Vis spectra displayed a plasmon absorption band, which was widened and slightly shifted to a higher wavelength due to the Eu3+ complex presence. Furthermore, the Eu3+ complex emission was increased in the AgNP film due to metal enhanced fluorescence (MEF). In order to exploit these emission properties, in some luminescent devices, the nanocomposite must be assembled in solid films. These changes in the optical properties of AgNP films when interacting with the Eu3+ complex are of great perspective for applications in optical devices, and this luminescent thin film configuration is an interesting system to explore nanocomposite materials.
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Acknowledgements
The authors are thankful to the Brazilian agencies CNPq Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq), Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES). Instituto Nacional de Ciência e Tecnologia (INCT of Carbon Nanomaterials), Grupo de Química de Materiais-Universidade Federal do Paraná (GQM-UFPR), Centro de Microscopia Eletrônica-UFPR (CME-UFPR), Laboratório Multiusuário de Análises Químicas (IQ/UNESP – Araraquara) and Laboratório Multiusuário de Análises Químicas-UTFPR (LAMAQ-UTFPR).
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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq), Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES), Instituto Nacional de Ciência e Tecnologia (INCT of Carbon Nanomaterials).
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Rafaela Rigoni Teixeira de Lima and Maria Izabel Xavier Scapolan: planned, carried out and investigated the experiment, wrote the original draft and reviewed the manuscript. Marcela Mohallem Oliveira and Renata Danielle Adati: conceived the original idea, supervised the project, provided resources, and reviewed the manuscript. All authors contributed to the final version of the manuscript.
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de Lima, R.R.T., Scapolan, M.I.X., Adati, R.D. et al. Optical properties of europium complex and silver nanoparticle nanocomposite grown on silica slide substrate. J Nanopart Res 24, 39 (2022). https://doi.org/10.1007/s11051-022-05420-8
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DOI: https://doi.org/10.1007/s11051-022-05420-8