Premium
Laser‐induced plasmonic heating on silver nanoparticles/poly( N ‐isopropylacrylamide) mats for optimizing SERS detection
Author(s) -
Wang Lin,
Zhang Yan,
Zhang Wenqi,
Ren Tianrui,
Wang Feng,
Yang Haifeng
Publication year - 2017
Publication title -
journal of raman spectroscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.748
H-Index - 110
eISSN - 1097-4555
pISSN - 0377-0486
DOI - 10.1002/jrs.5012
Subject(s) - poly(n isopropylacrylamide) , materials science , laser , composite number , plasmon , silver nanoparticle , surface plasmon resonance , nanotechnology , plasmonic nanoparticles , nanofiber , nanoparticle , raman spectroscopy , raman scattering , fabrication , chemical engineering , optoelectronics , polymer , composite material , optics , physics , engineering , copolymer , medicine , alternative medicine , pathology
Silver nanoparticle (AgNP)/poly( N ‐isopropylacrylamide) (PNIPAAm) composite solution was electrospun followed by crosslinking to fabricate AgNP/PNIPAAm composite nanofiber mats. Embedded AgNPs were found to align along the PNIPAAm nanofibers, which generate more hotspots upon laser‐induced plasmonic heating. This kind of AgNP/PNIPAAm mats show enhanced surface‐enhanced Raman scattering (SERS) effect upon continuous pulsed laser irradiation, showing a ‘laser heating sensitive’ SERS effect. Laser‐induced plasmonic heating can also tune the temperature‐responsive interaction between PNIPAAm and analytes and has been applied in the on‐site ‘laser heating sensitive’ separation and SERS detection of analytes. The composite nanofiber mats also showed good reproducibility and stability. What is more, this ‘laser heating sensitivity’ has also been applied in the direct SERS detection of adenosine in urea solution without urea interference. Together with the advantages of ease of large‐scale fabrication, stable and ‘laser heating sensitivity’, AgNP/PNIPAAm mats might find application in sensitive multicomponent biosensing. Copyright © 2016 John Wiley & Sons, Ltd.