title: Unusual Fe(CN)₆³⁻/⁴⁻ capture induced by synergic effect of electropolymeric cationic surfactant and graphene: characterization and biosensing application.
abstract: Herein, a special microheterogeneous system for Fe(CN)6(3-/4-) capture was constructed based on graphene (GN) and the electropolymeric cationic surfactant, an amphiphilic pyrrole derivative, (11-pyrrolyl-1-yl-undecyl) triethylammonium tetrafluoroborate (A2). The morphology of the system was characterized by scanning electron microscope. The redox properties of the entrapped Fe(CN)6(3-/4-) were investigated by cyclic voltammetry and UV-visible spectrometry. The entrapped Fe(CN)6(3-/4-) exhibited highly electroactive with stable and symmetrical cyclic voltammetric signal. A dramatic negative shift in the half wave potential can be obtained due to the unusual Fe(CN)6(3-/4-) partitioning in in this microheterogeneous system based on poly(A2+GN). Finally, the entrapped Fe(CN)6(3-/4-) was applied in the construction of the enhanced biosensors to hydrogen peroxide and sulfide.
authors.affiliation: School of Environmental and Biological Engineering, Nanjing University of Science and Technology , Nanjing 210094, China.
authors.forename: Sheng-Yuan
authors.initials: SY
authors.lastname: Deng
authors.forename: Tao
authors.initials: T
authors.lastname: Zhang
authors.forename: Dan
authors.initials: D
authors.lastname: Shan
authors.forename: Xiao-Yan
authors.initials: XY
authors.lastname: Wu
authors.forename: Yan-Zhi
authors.initials: YZ
authors.lastname: Dou
authors.forename: Serge
authors.initials: S
authors.lastname: Cosnier
authors.forename: Xue-Ji
authors.initials: XJ
authors.lastname: Zhang
mesh_terms: D015374:Biosensing Techniques; D005295:Ferrocyanides / Q000737:chemistry*; D006108:Graphite / Q000737:chemistry; D006861:Hydrogen Peroxide / Q000302:isolation & purification*; D011108:Polymers / Q000737:chemistry; D013440:Sulfides / Q000302:isolation & purification*; D013501:Surface-Active Agents / Q000737:chemistry
chemical_list: D005295:Ferrocyanides; D011108:Polymers; D013440:Sulfides; D013501:Surface-Active Agents; D006108:Graphite; D006861:Hydrogen Peroxide
keywords: Fe(CN)63−/4− partitioning; amphiphilic pyrrole derivative; graphene; inhibition; sulfide