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

Title data

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. Vol. 31 (2014) Issue 11 . - pp. 1134-1140.
ISSN 1521-4117
DOI: https://doi.org/10.1002/ppsc.201400062

Official URL: Volltext

Abstract in another language

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.

Further data

Item Type: Article in a journal
Refereed: Yes
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Former Professors > Chair Physical Chemistry II - Univ.-Prof. Dr. Andreas Fery
Research Institutions > EU Research Projects > METAMECH - Template Assisted Assembly of Meta-Materials Using Mechanical Instabilities
Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Physical Chemistry II
Research Institutions
Research Institutions > EU Research Projects
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Former Professors
Result of work at the UBT: Yes
DDC Subjects: 500 Science > 500 Natural sciences
500 Science > 530 Physics
500 Science > 540 Chemistry
Date Deposited: 10 Dec 2014 09:52
Last Modified: 10 Feb 2015 14:15
URI: https://eref.uni-bayreuth.de/id/eprint/4523