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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Controlling Gold Electrodeposition on Porous Polymeric Templates Produced by the Breath-Figure Method: Fabrication of SERS-Active Surfaces

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Author(s):
Prystaj Colombo, Rafael Neri [1] ; Moreira, Rodrigo Valim [1] ; Araujo de Faria, Dalva Lucia [1] ; Cordoba de Torresi, Susana Ines [1]
Total Authors: 4
Affiliation:
[1] Univ Sao Paulo, Inst Quim, Butanta, SP - Brazil
Total Affiliations: 1
Document type: Journal article
Source: CHEMPLUSCHEM; v. 84, n. 8, p. 1052-1059, AUG 2019.
Web of Science Citations: 0
Abstract

Porous structured surfaces decorated with gold nanoparticles can be fabricated in an economical two-step process. Sub-micrometric porous polymethyl methacrylate (PMMA) templates are formed by using the breath-figure method (BFM) with a single-step spin-coating onto a conducting substrate to result in a set of delimited microdomains for gold electrodeposition. By controlling electrochemical parameters, distinct morphologies are engendered, among them, nanoparticles that present useful local Raman enhancement in the order of up to 10(6) with stability of a solid-phase platform and characteristic chemical resistance of gold. The spatial confinement of metallic structures resulted in electromagnetic field enhancement, here compared to flat metallic surfaces where contributions of area effect and fluorescence quenching are responsible for a significant apparent enhancement to Raman spectra that has not been frequently reported to date. (AU)

FAPESP's process: 15/26308-7 - Optimization of the physicochemical properties of nano -structured materials for applications in molecular recognition, catalysis and energy conversion/storage
Grantee:Roberto Manuel Torresi
Support Opportunities: Research Projects - Thematic Grants
FAPESP's process: 15/12786-4 - Micro and nanostructured surfaces via electrochemistry: from morphology to properties
Grantee:Rafael Neri Prystaj Colombo
Support Opportunities: Scholarships in Brazil - Doctorate (Direct)
FAPESP's process: 12/13119-3 - Vibrational spectroscopy in condensed phases
Grantee:Mauro Carlos Costa Ribeiro
Support Opportunities: Research Projects - Thematic Grants