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Reference type: Journal
Authors: Chen B, Liu C, Hayashi K
Article Title: Selective Terpene Vapor Detection Using Molecularly Imprinted Polymer Coated Au Nanoparticle LSPR Sensor.
Publication date: 2014
Journal: IEEE Sensors Journal
Volume: 14
Issue: (10)
Page numbers: 3458-3464.
DOI: 10.1109/JSEN.2014.2346187

Abstract: A localized surface plasmon resonance sensor based on molecularly imprinted polymer (MIP) coated Au nanoparticle (AuNP) was developed to selectively detect α-pinene vapor. AuNPs were deposited on glass slides via Au ion sputtering method. The MIP was synthesized using methacrylic acid as monomer, ethylene glycol dimethylacrylate as cross-linker, and α-pinene as template. Adsorption characteristics of MIP powder and coating films were evaluated using gas chromatography mass spectrometry. The influence of molar ratio of template (α-pinene) to monomer on the absorption characteristics of MIP film was investigated. The largest affinity absorption amount of polymer film was achieved when the molar ratio of template to monomer was 1:4. Prepolymerized MIP mixture was spin coated on the sputtered AuNPs. The results showed that plasmon resonance peak in spectrum and the refractive index sensitivity depended on the polymer layer thickness. Better sensitivity and selectivity of MIP coated AuNPs sensor were realized at the spin coating speed about 1400 r/min. The real-time responses of α-pinene imprinted polymer coated AuNP sensor to three terpene vapors: α-pinene, limonene, and γ-terpinene were verified to be selective, rapid, and reversible
Template and target information: α-pinene
Author keywords: Absorption, films, gold, polymers, Powders, sensors, AuNPs, LSPR, MIP, terpene

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