Triggering gold nanoparticles formation on a quartz surface by nanosecond pulsed laser irradiation.

Autor:	Mercadal PA; INFIQC-UNC-CONICET, Departamento de Fisicoquímica, Argentina Departamento de Físico-Química, Facultad de Ciencias Químicas, UNC, Universidad Nacional de Córdoba Córdoba Argentina coronado@fcq.unc.edu.ar., Schejtman SDG; INFIQC-UNC-CONICET, Departamento de Fisicoquímica, Argentina Departamento de Físico-Química, Facultad de Ciencias Químicas, UNC, Universidad Nacional de Córdoba Córdoba Argentina coronado@fcq.unc.edu.ar.; INFIQC-UNC-CONICET, Departamento de Química Orgánica, Facultad de Ciencias Químicas UNC Argentina., Cometto FP; INFIQC-UNC-CONICET, Departamento de Fisicoquímica, Argentina Departamento de Físico-Química, Facultad de Ciencias Químicas, UNC, Universidad Nacional de Córdoba Córdoba Argentina coronado@fcq.unc.edu.ar., Veglia AV; INFIQC-UNC-CONICET, Departamento de Química Orgánica, Facultad de Ciencias Químicas UNC Argentina., Coronado EA; INFIQC-UNC-CONICET, Departamento de Fisicoquímica, Argentina Departamento de Físico-Química, Facultad de Ciencias Químicas, UNC, Universidad Nacional de Córdoba Córdoba Argentina coronado@fcq.unc.edu.ar.
Jazyk:	angličtina
Zdroj:	RSC advances [RSC Adv] 2021 Jun 24; Vol. 11 (36), pp. 22419-22425. Date of Electronic Publication: 2021 Jun 24 (Print Publication: 2021).
DOI:	10.1039/d1ra01991k
Abstrakt:	A new direct and straightforward method is proposed to synthesize bare Au nanoparticles (Au NPs) on a quartz surface by nanosecond 532 nm pulsed laser irradiation of a quartz surface in contact with Au(iii) precursor solution. The characterisation by XPS, UV-Vis, SEM and AFM measurements demonstrate the formation of bare Au NPs anchored on the quartz surface with a mean height of 27 ± 10 nm localized in the laser irradiation area. The main features of this approach are their simplicity, quick fabrication and the large surface area covered by Au NPs. The absence of ligands/stabilizing agents on the Au NPs makes this substrate very suitable for its direct surface modification opening the range of applications in biology, medicine, sensing, catalysis, among others. As a proof of concept, the capabilities and advantages of this substrate as Surface Enhanced Raman Spectroscopy (SERS) platform were tested demonstrating the absence of any Raman signal overlapping with the analyte in the whole spectral range. Competing Interests: There are no conflicts to declare. (This journal is © The Royal Society of Chemistry.)
Databáze:	MEDLINE
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