title: 2,6-Diaminopyridine-imprinted polymer and its potency to hair-dye assay using graphene/ionic liquid electrochemical sensor.
abstract: A new analytical approach for detecting diaminopyridine derivatives has been constructed using a molecular imprinting-electrochemical sensor. Opposed to the conventional strategy of employing diaminopyridine as the functional monomer and uracil derivatives as the target analyte, in the current study, the 2,6-Diaminopyridine-imprinted core-shell nanoparticles were synthesized with 2,6-Diaminopyridine as the template molecule and 6-aminouracil as the functional monomer. Graphene and ionic liquid which can assist 2,6-Diaminopyridine-imprinted core-shell nanoparticles in electrochemical reaction kinetics by increasing conductivity have been introduced to form one of the electrode modified layers. The proposed analytical method has been applied in 2,6-Diaminopyridine detection in hair-dyes and demonstrated appropriate sensitivity and selectivity, with a linear range of 0.0500-35.0 mg kg(-1) and a detection limit as low as 0.0275 mg kg(-1).
authors.affiliation: Key Laboratory of Colloid and Interface Chemistry & Key Laboratory of Special Aggregated Materials, Shandong University, Ministry of Education, Jinan 250100, China.
authors.forename: Peini
authors.initials: P
authors.lastname: Zhao
authors.affiliation: Key Laboratory of Colloid and Interface Chemistry & Key Laboratory of Special Aggregated Materials, Shandong University, Ministry of Education, Jinan 250100, China. Electronic address: jhao@sdu.edu.cn.
authors.forename: Jingcheng
authors.initials: J
authors.lastname: Hao
mesh_terms: D015374:Biosensing Techniques; D055664:Electrochemical Techniques; D006108:Graphite / Q000737:chemistry*; D006197:Hair / Q000737:chemistry*; D006801:Humans; D052578:Ionic Liquids / Q000737:chemistry*; D054802:Molecular Imprinting; D053758:Nanoparticles; D011108:Polymers / Q000737:chemistry; D011725:Pyridines / Q000737:chemistry
chemical_list: D052578:Ionic Liquids; D011108:Polymers; D011725:Pyridines; D006108:Graphite; C505797:2,6-diaminopyridine
keywords: Diaminopyridine derivatives detection; Graphene; Hair dyes; Ionic liquid; Molecular imprinting-electrochemical sensor; Multiple hydrogen bonding