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SERS Platforms of Plasmonic Hydrophobic Surfaces for Analyte Concentration: Hierarchically Assembled Gold Nanorods on Anodized Aluminum

Titelangaben

Tebbe, Moritz ; Cherepanov, Pavel ; Skorb, Ekaterina V. ; Poznyak, Sergey ; Garcia de Abajo, F. Javier ; Fery, Andreas ; Andreeva, Daria V. ; Alvarez-Puebla, Ramon A. ; Pazos-Perez, Nicolas:
SERS Platforms of Plasmonic Hydrophobic Surfaces for Analyte Concentration: Hierarchically Assembled Gold Nanorods on Anodized Aluminum.
In: Particle & Particle Systems Characterization. Bd. 31 (2014) Heft 11 . - S. 1134-1140.
ISSN 1521-4117
DOI: https://doi.org/10.1002/ppsc.201400062

Volltext

Link zum Volltext (externe URL): Volltext

Abstract

Efficient and homogeneous surface-enhanced Raman scattering (SERS) substrates are usually prepared using lithographic approaches, physical evaporation, or in situ chemical reduction. However, these approaches are time-consuming, expensive, and very difficult to upscale. Alternatively, tem- plate-assisted approaches using colloidal suspensions of preformed nanopar- ticles have become more popular because of their low cost, fast production, and ability to be scaled up easily. One of the limitations of these methods is the dimensions of the structured surfaces. In this context, a new method for designing low-cost, up-scalable surface patterns that match building block dimensionality based on anodization of aluminum, enabling a hierarchical organization of anisotropic nanoparticles, is presented. The proposed new technology starts with anodized aluminum oxide with regular parallel linear periodicities. To produce a highly efficient plasmonic surface, gold nanorods are assembled into parallel lines where the long axes of the Au rods are also oriented along the substrate lines, thus inducing reproducible tip-to-tip plas- monic coupling with the corresponding generation of highly active hotspots. Additionally, this advanced material presents an inherent hydrophobicity that can be exploited as a method for concentration of analytes on the surface. SERS detection is demonstrated with benzenethiol and 2-naphtoic acid.

Weitere Angaben

Publikationsform: Artikel in einer Zeitschrift
Begutachteter Beitrag: Ja
Institutionen der Universität: Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften
Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Chemie
Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Chemie > Ehemalige Professoren > Lehrstuhl Physikalische Chemie II - Univ.-Prof. Dr. Andreas Fery
Forschungseinrichtungen > EU-Projekte > METAMECH - Template Assisted Assembly of Meta-Materials Using Mechanical Instabilities
Fakultäten
Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Chemie > Lehrstuhl Physikalische Chemie II
Forschungseinrichtungen
Forschungseinrichtungen > EU-Projekte
Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Chemie > Ehemalige Professoren
Titel an der UBT entstanden: Ja
Themengebiete aus DDC: 500 Naturwissenschaften und Mathematik > 500 Naturwissenschaften
500 Naturwissenschaften und Mathematik > 530 Physik
500 Naturwissenschaften und Mathematik > 540 Chemie
Eingestellt am: 10 Dec 2014 09:52
Letzte Änderung: 10 Feb 2015 14:15
URI: https://eref.uni-bayreuth.de/id/eprint/4523