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Reference type: Journal
Authors: Yang JC, Shin HK, Hong SW, Park JY
Article Title: Lithographically patterned molecularly imprinted polymer for gravimetric detection of trace atrazine.
Publication date: 2015
Journal: Sensors and Actuators B: Chemical
Volume: 216
Page numbers: 476-481.
DOI: 10.1016/j.snb.2015.04.079
Alternative URL: http://www.sciencedirect.com/science/article/pii/S0925400515005316

Abstract: In this paper, we examined a novel molecularly imprinted polymer (MIP) patterned matrix, consisting of methacrylic acid (MAA) and ethylene glycol dimethacrylate (EGDMA) as functional and cross-linking monomers, respectively, for detection of trace atrazine in an aqueous solution. A solvent assisted soft lithography and UV-initiated polymerization were used to develop striped poly(MAA-EGDMA) patterns. In comparison to a planar MIP film (Δ fp-MIP = -158 Hz), the striped patterns showed faster sensing response (Δ fs-MIP = -269 Hz) for the 30 min detection period due to the relatively increased binding sites generated from the MIP stripes. Furthermore, the sensitivity of the MIP sensor was found to be -9.98 Hz (μM)-1 via gravimetric quartz crystal microbalance (QCM) measurements and the selectivity of the MIP stripes was evaluated through sensing characteristics of other herbicides. Thus, a control of binding sites via this lithographic technique could contribute to the development of efficient MIP sensing platforms
Template and target information: atrazine
Author keywords: molecularly imprinted polymer (MIP), soft lithography, UV-initiated polymerization, atrazine, herbicide, poly(MAA-EGDMA)

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