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Galvanic Replacement Reaction as a Route to Prepare Nanoporous Aluminum for UV Plasmonics

Istituto Italiano di Tecnologia, via Morego 30, I-16163 Genova, Italy
Deparment of Physics, Politecnico di Milano, Piazza L. da Vinci 32, I-20133 Milan, Italy
EMPA Federal Swiss research Institute, 9014 St. Gallen, Switzerland
ICMATE—CNR, Corso Stati Uniti 4, 35127 Padova, Italy
Cixi Institute of Biomedical Engineering, Ningbo Institute of Industrial Technology, Chinese Academy of Sciences, 1219 Zhongguan West Road, Ningbo 315201, China
Elettra Sincrotrone Trieste S.C.p.A., S.S. 14 km 163,5 in Area Science Park, 34149 Basovizza TS, Italy
Department of Physics, University of Trieste, Via Alfonso Valerio 2, 34127 Trieste, Italy
Shenyang National Laboraory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016, China
Department of Electrical and Computer Engineering, Rice University, 6100 Main Street MS-378, Houston, TX 77005, USA
Author to whom correspondence should be addressed.
Nanomaterials 2020, 10(1), 102;
Received: 4 December 2019 / Revised: 22 December 2019 / Accepted: 31 December 2019 / Published: 4 January 2020
(This article belongs to the Section Synthesis, Interfaces and Nanostructures)
There is a growing interest in extending plasmonics applications into the ultraviolet region of the electromagnetic spectrum. Noble metals are commonly used in plasmonic, but their intrinsic optical properties limit their use above 350 nm. Aluminum is probably the most suitable material for UV plasmonics, and in this work we fabricated substrates of nanoporous aluminum starting from an alloy of Al2Mg3. The porous metal is obtained by means of a galvanic replacement reaction. Such nanoporous metal can be exploited to achieve a plasmonic material suitable for enhanced UV Raman spectroscopy and fluorescence. Thanks to the large surface to volume ratio, this material represents a powerful platform for promoting interaction between plasmonic substrates and molecules in the UV. View Full-Text
Keywords: plasmonic; ultraviolet; nanoporous; aluminum; SERS; metal enhanced fluorescence plasmonic; ultraviolet; nanoporous; aluminum; SERS; metal enhanced fluorescence
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Garoli, D.; Schirato, A.; Giovannini, G.; Cattarin, S.; Ponzellini, P.; Calandrini, E.; Proietti Zaccaria, R.; D’Amico, F.; Pachetti, M.; Yang, W.; Jin, H.-J.; Krahne, R.; Alabastri, A. Galvanic Replacement Reaction as a Route to Prepare Nanoporous Aluminum for UV Plasmonics. Nanomaterials 2020, 10, 102.

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