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Reference type: Journal
Authors: Zhuo KL, Ma XL, Chen YJ, Wang CY, Li AQ, Yan CL
Article Title: Molecularly imprinted polymer based potentiometric sensor for the determination of 1-hexyl-3-methylimidazolium cation in aqueous solution.
Publication date: 2016
Journal: Ionics
Volume: 22
Issue: (10)
Page numbers: 1947-1955.
DOI: 10.1007/s11581-016-1708-z

Abstract: The molecular imprinting technique is powerful to prepare functional materials with molecular recognition properties. In this work, a potentiometric sensor was fabricated by dispersing molecularly imprinted polymers (MIPs) into plasticized PVC matrix and used for the determination of 1-hexyl-3-methylimidazolium cation ([C6mim]+) in aqueous solution. The MIPs were synthesized by precipitation polymerization using 1-hexyl-3-methylimidazolium chloride ([C6mim]Cl) as the template molecule, methacrylic acid (MAA) and ethylene glycol dimethacrylat (EGDMA) as the functional monomers, and EGDMA also as the cross-linking agent. The as-prepared electrode exhibited a Nernstian response (58.87 0.3 mV per decade) to [C6mim]+ in a concentration range from 1.0 x 10-6 to 0.1 mol kg-1 with a low detection limit of 2.8 x 10-7 mol kg-1, high selectivity, and little pH influence. The as-prepared electrode was used for the detection of the [C6mim]+ in distilled water, tap water, and river water with a good recovery. It was also successfully applied in the determination of mean activity coefficients of [C6mim]Br in fructose + water systems based on the potentiometric method at 298.15 K
Template and target information: 1-hexyl-3-methylimidazolium chloride, [C6mim]Cl, 1-hexyl-3-methylimidazolium cation, [C6mim]+
Author keywords: Ionic liquid, molecularly imprinted polymer, PVC membrane, Ion-selective electrode

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