Bare laser-synthesized Au-based nanoparticles as nondisturbing surface-enhanced Raman scattering probes for bacteria identification

Autor: Gleb Tselikov, Martin Kögler, Yury V. Ryabchikov, Alexey Popov, Andrei V. Kabashin, Ahmed Al-Kattan, Sanna Uusitalo, Igor Meglinski, Anna Liisa Välimaa, Peter Neubauer, Anton A. Popov, Jussi Hiltunen, Riitta Laitinen
Přispěvatelé: Technical University of Berlin / Technische Universität Berlin (TU), Laboratoire Lasers, Plasmas et Procédés photoniques (LP3), Aix Marseille Université (AMU)-Centre National de la Recherche Scientifique (CNRS), VTT Technical Research Centre of Finland (VTT), ITMO University [Russia], University of Oulu, National Technical University of Ukraine 'Kyiv Polytechnic Institute' [Kiev], Aix Marseille Université (AMU), Natural Resources Institute Finland (LUKE), European Project: 120416‐072252,ECOST‐STSM‐BM1205, Technische Universität Berlin (TU), Centre National de la Recherche Scientifique (CNRS)-Aix Marseille Université (AMU)
Jazyk: angličtina
Rok vydání: 2018
Předmět:
Nanostructure
Materials science
Biocompatibility
Listeria
Surface Properties
General Physics and Astronomy
Nanoparticle
Metal Nanoparticles
Nanotechnology
02 engineering and technology
engineering.material
Spectrum Analysis
Raman
01 natural sciences
ultrapure laser‐synthesized Au nanoparticles
General Biochemistry
Genetics and Molecular Biology
Nanomaterials
laser ablation in liquids
symbols.namesake
[PHYS.PHYS.PHYS-PLASM-PH]Physics [physics]/Physics [physics]/Plasma Physics [physics.plasm-ph]
Escherichia coli
General Materials Science
bacteria detection
ta116
[PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics]
SERS
Interface and colloid science
Lasers
Ultrapure laser-synthesized Au nanoparticles
010401 analytical chemistry
General Engineering
General Chemistry
021001 nanoscience & nanotechnology
0104 chemical sciences
13. Climate action
ultrapure laser-synthesized Au nanoparticles
Raman spectroscopy
engineering
symbols
[PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci]
Noble metal
Gold
0210 nano-technology
Raman scattering
Zdroj: Journal of Biophotonics
Journal of Biophotonics, 2018, 11 (7), pp.e201700225. ⟨10.1002/jbio.201700225⟩
Journal of Biophotonics, Wiley, 2018, 11 (7), pp.e201700225. ⟨10.1002/jbio.201700225⟩
Kögler, M, Ryabchikov, Y V, Uusitalo, S, Popov, A, Popov, A, Tselikov, G, Välimaa, A L, Al-Kattan, A, Hiltunen, J, Laitinen, R, Neubauer, P, Meglinski, I & Kabashin, A V 2018, ' Bare laser-synthesized Au-based nanoparticles as nondisturbing surface-enhanced Raman scattering probes for bacteria identification ', Journal of Biophotonics, vol. 11, no. 7, e201700225 . https://doi.org/10.1002/jbio.201700225
ISSN: 1864-063X
1864-0648
DOI: 10.1002/jbio.201700225⟩
Popis: International audience; The ability of noble metal-based nanoparti-cles (NPs) (Au, Ag) to drastically enhance Raman scattering from molecules placed near metal surface, termed as surface-enhanced Raman scattering (SERS), is widely used for identification of trace amounts of biological materials in biomedical, food safety and security applications. However, conventional NPs synthesized by colloi-dal chemistry are typically contaminated by nonbiocompatible by-products (surfac-tants, anions), which can have negative impacts on many live objects under examination (cells, bacteria) and thus decrease the precision of bioidentification. In this article, we explore novel ultrapure laser-synthesized Au-based nanomaterials, including Au NPs and AuSi hybrid nanostructures, as mobile SERS probes in tasks of bacteria detection. We show that these Au-based nanomaterials can efficiently enhance Raman signals from model R6G molecules, while the enhancement factor depends on the content of Au in NP composition. Profiting from the observed enhancement and purity of laser-synthesized nanomaterials, we demonstrate successful identification of 2 types of bacteria (Listeria innocua and Escherichia coli). The obtained results promise less disturbing studies of biological systems based on good biocompatibility of contamination-free laser-synthesized nanomaterials. K E Y W O R D S bacteria detection, laser ablation in liquids, Raman spectroscopy, SERS, ultrapure laser-synthesized Au nanoparticles Martin Kögler and Yury V. Ryabchikov contributed equally to this study.
Databáze: OpenAIRE
Externí odkaz: