title: Multifunctional solid-state electrochemiluminescence sensing platform based on poly(ethylenimine) capped N-doped carbon dots as novel co-reactant.
abstract: A multifunctional solid-state electrochemiluminescence (ECL) sensing platform based on poly(ethylenimine) (PEI) capped N-doped carbon dots (NCDs@PEI) as novel co-reactant of Ru(bpy)32+nanosheets (RuNSs) was designed for the first time. In this route, RuNSs with large surface-to-volume ratio was used as luminophor, and NCDs@PEI, which was newly synthesized and modified in one step via a facile microwave-assisted method, was served as co-reactant. The as-prepared NCDs@PEI exhibited better catalytic effect to RuNSs than naked NCDs, due to the double enhancement contribution of NCDs and PEI to RuNSs. Simultaneously, reduced graphene oxide (rGO) was further introduced to facilitate the electron transfer and amplify the ECL signal. The developed ECL sensor (NCDs@PEI-rGO/RuNSs/GCE) exhibited desired ECL emission, with about 69-fold enhancement of the ECL intensity in comparison with RuNSs/GCE. When used as ECL probe for dopamine detection, the prepared sensor showed high sensitivity in a wide linear range of 0.01-50μM with the detection limit of 10nM. Moreover, the sensing platform also suggested multifunctional application for detecting other compounds including bisphenol A, catechol and hydroquinone.
authors.affiliation: School of Agricultural Equipment Engineering Institute of Agricultural Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China.
authors.forename: Libo
authors.initials: L
authors.lastname: Li
authors.affiliation: School of Agricultural Equipment Engineering Institute of Agricultural Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China.
authors.forename: Dong
authors.initials: D
authors.lastname: Liu
authors.affiliation: School of Agricultural Equipment Engineering Institute of Agricultural Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China.
authors.forename: Hanping
authors.initials: H
authors.lastname: Mao
authors.affiliation: School of Agricultural Equipment Engineering Institute of Agricultural Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China; State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, China. Electronic address: youty@ciac.jl.cn.
authors.forename: Tianyan
authors.initials: T
authors.lastname: You
mesh_terms: D015082:2,2'-Dipyridyl / Q000737:chemistry; D001559:Benzhydryl Compounds / Q000032:analysis; D002244:Carbon / Q000737:chemistry*; D002396:Catechols / Q000032:analysis; D004298:Dopamine / Q000032:analysis*; D055664:Electrochemical Techniques / Q000295:instrumentation* / Q000379:methods; D006108:Graphite / Q000737:chemistry; D006873:Hydroquinones / Q000032:analysis; D057230:Limit of Detection; D008163:Luminescent Measurements / Q000295:instrumentation* / Q000379:methods; D008958:Models, Molecular; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure; D010084:Oxidation-Reduction; D010087:Oxides / Q000737:chemistry; D010636:Phenols / Q000032:analysis; D011094:Polyethyleneimine / Q000737:chemistry*; D012428:Ruthenium / Q000737:chemistry; D000098826:Bisphenol A Compounds
chemical_list: D015082:2,2'-Dipyridyl; D001559:Benzhydryl Compounds; D002244:Carbon; D002396:Catechols; D004298:Dopamine; D006108:Graphite; D006873:Hydroquinones; D010087:Oxides; D010636:Phenols; D011094:Polyethyleneimine; D012428:Ruthenium; C034221:catechol; C006780:bisphenol A; D000098826:Bisphenol A Compounds; C031927:hydroquinone
keywords: NCDs@PEI; Reduced graphene oxide; Ru(bpy)32+nanosheets; Solid-state ECL sensor