Issue 55, 2019
From the journal:

Chemical Communications

Ordered mesoporous silver superstructures with SERS hot spots†

Xiaotong Wu,a   Xiaokun Fan,b   Zhen Yin,c   Yanjun Liu, ORCID logo c   Jing Zhao ORCID logo d  and  Zewei Quan ORCID logo *b  

* Corresponding authors

a School of Chemical Biology and Biotechnology (SCBB), Peking University Shenzhen Graduate School, Shenzhen, Guangdong 518055, China

b Department of Chemistry, Southern University of Science and Technology (SUSTech), Shenzhen, Guangdong 518055, China
E-mail: quanzw@sustech.edu.cn

c Department of Electrical and Electronic Engineering, Southern University of Science and Technology (SUSTech), Shenzhen, Guangdong 518055, China

d Department of Chemistry, University of Connecticut, 55 North Eagleville Road, Storrs, Connecticut 06269, USA

Abstract

We have developed a method to fabricate freestanding highly ordered porous silver (Ag) superstructures by an “assembly-based nanoparticle (NP) coalescence” method. The synthesized superstructures have high-density mesopores periodically distributed over the entire structure, on which a highly enhanced electromagnetic field was observed by electron energy loss spectroscopy. Thus, the surface enhanced Raman scattering (SERS) signal of Rhodamine 6G in the ordered mesopores is 8.2 times higher compared to that in disordered porous superstructures. The results demonstrate that these freestanding mesoporous Ag superstructures are potentially good SERS substrates.

Graphical abstract: Ordered mesoporous silver superstructures with SERS hot spots

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Article information

DOI
https://doi.org/10.1039/C9CC03337H
Article type
Communication
Submitted
30 Apr 2019
Accepted
12 Jun 2019
First published
13 Jun 2019

Chem. Commun., 2019,55, 7982-7985

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Ordered mesoporous silver superstructures with SERS hot spots

X. Wu, X. Fan, Z. Yin, Y. Liu, J. Zhao and Z. Quan, Chem. Commun., 2019, 55, 7982 DOI: 10.1039/C9CC03337H

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