Crystal engineering and SERS properties of Ag–Fe3O4 nanohybrids: from heterodimer to core–shell nanostructures

Jianmei Huang; Yanhui Sun; Shoushuang Huang; Kang Yu; Qing Zhao; Feng Peng; Hao Yu; Hongjuan Wang; Jian Yang

doi:10.1039/C1JM13045E

Crystal engineering and SERS properties of Ag–Fe₃O₄ nanohybrids: from heterodimer to core–shell nanostructures†

Jianmei Huang,^b Yanhui Sun,^c Shoushuang Huang,^b Kang Yu,^b Qing Zhao,^c Feng Peng,^b Hao Yu,^b Hongjuan Wang^b and Jian Yang*^ab

Author affiliations

* Corresponding authors

^a Department of Chemistry, School of Chemistry and Chemical Engineering, Shandong University, Jinan, People's Republic of China
E-mail: yangjian@sdu.edu.cn

^b Department of Chemical Engineering, South China University of Technology, Guangzhou, People's Republic of China

^c State Key Laboratory for Mesoscopic Physics, and Electron Microscopy Laboratory, Department of Physics, Peking University, Beijing, People's Republic of China

Abstract

Structure tailoring of hybrid nanoparticles is highly desirable for a number of applications, due to their controllable physical properties. Here, a family of Ag–Fe₃O₄ nanohybrids is synthesized via a simple one-step reaction of silver acetate and iron acetylacetonate in the presence of 1,2-dodecanediol, oleylamine and oleic acid. The as-obtained Ag–Fe₃O₄ nanohybrid could be finely tuned from heterodimer nanoparticles to flower-like or core–shell nanoparticles, by controlling the experimental conditions. The structural differences between these nanohybrids greatly affect their optical properties. The intense surface plasmon resonance (SPR) peak allows the heterodimer nanoparticles to act as a superior surface-enhanced Raman scattering (SERS) substrate, which has been demonstrated by using 2-naphthalenethiol as a probe molecule. It is noted that the SERS signal of 2-naphthalenethiol on the heterodimer nanoparticles is much stronger than those on the core–shell nanohybrid and Ag nanoparticles alone, indicating its potential in the fields of ultrasensitive detection and biological imaging.

Supplementary files

Article information

DOI: https://doi.org/10.1039/C1JM13045E
Article type: Paper
Submitted: 01 Jul 2011
Accepted: 02 Sep 2011
First published: 12 Oct 2011

Download Citation

J. Mater. Chem., 2011,21, 17930-17937

Permissions

Request permissions

Crystal engineering and SERS properties of Ag–Fe₃O₄ nanohybrids: from heterodimer to core–shell nanostructures

J. Huang, Y. Sun, S. Huang, K. Yu, Q. Zhao, F. Peng, H. Yu, H. Wang and J. Yang, J. Mater. Chem., 2011, 21, 17930 DOI: 10.1039/C1JM13045E

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Journal of Materials Chemistry