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Colloids Interfaces 2017, 1(1), 4; doi:10.3390/colloids1010004

Nanostructured Assemblies of Gold and Silver Nanoparticles for Plasmon Enhanced Spectroscopy Using Living Biotemplates

1
Department of Chemistry, UFSCar—Federal University of São Carlos, São Carlos SP 13565-905, Brazil
2
Department of Chemistry and Biochemistry, University of Windsor, Windsor, ON N9B 3P4, Canada
*
Author to whom correspondence should be addressed.
Received: 19 September 2017 / Revised: 31 October 2017 / Accepted: 1 November 2017 / Published: 4 November 2017
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Abstract

The ability to control the assembly of nanoparticles on substrates used in plasmon-enhanced spectroscopy continues to drive research in the field of nanofabrication. Here we describe the use of fungi as soft biotemplates to fabricate nanostructured microtubules with gold and gold-silver nanoparticles with potential applications as sensors and biosensors. In the first step, spores of the filamentous fungus Cladosporium sphaerospermum were inoculated in a suspension of gold nanoparticles, forming stable microtubules of gold nanoparticles during fungus growth. These materials were exposed to a second suspension of silver nanoparticles, resulting in complexes multilayers structures of gold and silver nanoparticles, which were evaluated as substrates for surface-enhanced Raman scattering (SERS) using small amounts of thiophenol as probe molecules directly on the microtubules. Both gold and the gold-silver substrates provide the SERS effect. View Full-Text
Keywords: surface-enhanced Raman spectroscopy; biotemplate; colloidal nanoparticles surface-enhanced Raman spectroscopy; biotemplate; colloidal nanoparticles
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Kubo, A.M.; Gorup, L.F.; Toffano, L.; Amaral, L.S.; Rodrigues-Filho, E.; Mohan, H.; Aroca, R.; Camargo, E.R. Nanostructured Assemblies of Gold and Silver Nanoparticles for Plasmon Enhanced Spectroscopy Using Living Biotemplates. Colloids Interfaces 2017, 1, 4.

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Colloids Interfaces EISSN 2504-5377 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
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