Journal
APPLIED SPECTROSCOPY
Volume 71, Issue 7, Pages 1543-1550Publisher
SAGE PUBLICATIONS INC
DOI: 10.1177/0003702817703293
Keywords
Surface-enhanced Raman scattering; SERS; in situ SERS; 3D nanoporous polymer; gold-nanoparticle-decorated polymer filter; environmental monitoring; biomolecule detection
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Funding
- National Natural Science Foundation of P. R. China [21403082]
- Development Program of the Science and Technology of Jilin Province [20150520015JH]
- Project of Education Department of Jilin Province
- College Students Innovation and Entrepreneurship Training of Jilin Provincial
- National Research Foundation of Korea (NRF) grants - Ministry of Science, ICT and Future Planning [NRF-2015M2B2A6028602, NRF-2014M2B2A9030381]
- Agency for Defense Development
- National Research Foundation of Korea [2015M2B2A6028602, 2014M2B2A9030381] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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In this work, we designed a process to assemble gold nanoparticles onto a three-dimensional (3D) polymer surface, which can then be monitored using surface-enhanced Raman scattering (SERS). This work is the first demonstration of the assembly of gold nanoparticles on a filter film and in situ measurement with Raman spectroscopy. Herein, a polyhexamethylene adipamide (Nylon66) film embedded in the organic filter film was used as a template to fabricate a tunable SERS-active substrate. A hotspot''-rich gold-nanoparticle-decorated polymer substrate for SERS was prepared; this substrate exhibited high sensitivity in trace detection of targets. The study was conducted using 4-mercaptobenzoic acid as a probe molecule with the aim of comparing the scattering efficiency and the homogeneity of the Raman signal on selected substrates. In addition, we used the gold-decorated polymer film to detect a biotin-avidin complex. The most powerful advantage of the proposed microanalytical device is the in situ SERS application. The 3D nanoporous structures described in this work hold strong potential for use in various applications such as environmental monitoring and biomolecule detection.
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