Fabrication of intelligent poly(N-isopropylacrylamide)/silver nanoparticle composite films with dynamic surface-enhanced Raman scattering effect

Lin Wang; Xiaomei Zhao; Yan Zhang; Wenqi Zhang; Tianrui Ren; Zhihong Chen; Feng Wang; Haifeng Yang

doi:10.1039/C5RA04361A

Fabrication of intelligent poly(N-isopropylacrylamide)/silver nanoparticle composite films with dynamic surface-enhanced Raman scattering effect†

Lin Wang,^a Xiaomei Zhao,^a Yan Zhang,^a Wenqi Zhang,^a Tianrui Ren,

^a Zhihong Chen,^b Feng Wang*^a and Haifeng Yang*^a

Author affiliations

* Corresponding authors

^a The Education Ministry Key Lab of Resource Chemistry, Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Municipal Education Committee Key Laboratory of Molecular Imaging Probes and Sensors, Department of Chemistry, Shanghai Normal University, Shanghai, P. R. China
E-mail: wangfeng@shnu.edu.cn, hfyang@shnu.edu.cn

^b College of Information, Mechanical and Electrical engineering, Shanghai Normal University, Shanghai, P. R. China

Abstract

An intelligent PNIPAAm/AgNP composite film was fabricated by the simple assembly of silver nanoparticles on the surface of photo-polymerized PNIPAAm film via electrostatic interaction. Surface enhanced Raman scattering study and finite-difference time-domain simulation demonstrated that the local electric field intensity and the SERS intensity of this resultant composite film can be easily tuned by changing the interparticle distance triggered by temperature or solvent variations. The composite film showed a high stability in a polar organic solvent and concentrated saline solution. The smart composite film might find applications as a SERS sensor for temperature/solvent variation detection as well as a versatile SERS substrate for the detection of analyte in sea water and organic solvent.

This article is part of the themed collection: Surface enhanced Raman Spectroscopy: Editors collection for RSC Advances

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DOI: https://doi.org/10.1039/C5RA04361A
Article type: Paper
Submitted: 12 mar 2015
Accepted: 28 apr 2015
First published: 28 apr 2015

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RSC Adv., 2015,5, 40437-40443

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Fabrication of intelligent poly(N-isopropylacrylamide)/silver nanoparticle composite films with dynamic surface-enhanced Raman scattering effect

L. Wang, X. Zhao, Y. Zhang, W. Zhang, T. Ren, Z. Chen, F. Wang and H. Yang, RSC Adv., 2015, 5, 40437 DOI: 10.1039/C5RA04361A

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Fabrication of intelligent poly(N-isopropylacrylamide)/silver nanoparticle composite films with dynamic surface-enhanced Raman scattering effect†

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Fabrication of intelligent poly(N-isopropylacrylamide)/silver nanoparticle composite films with dynamic surface-enhanced Raman scattering effect

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