title: Comparative study of the electrochemical behavior and analytical applications of (bio)sensing platforms based on the use of multi-walled carbon nanotubes dispersed in different polymers.
abstract: This review present a critical comparison of the electrochemical behavior and analytical performance of glassy carbon electrodes (GCE) modified with carbon nanotubes (CNTs) dispersed in different polymers: polyethylenimine (PEI), PEI functionalized with dopamine (PEI-Do), polyhistidine (Polyhis), polylysine (Polylys), glucose oxidase (GOx) and double stranded calf-thymus DNA (dsDNA). The comparison is focused on the analysis of the influence of the sonication time, solvent, polymer/CNT ratio, and nature of the polymer on the efficiency of the dispersions and on the electrochemical behavior of the resulting modified electrodes. The results allow to conclude that an adequate selection of the polymers makes possible not only an efficient dispersion of CNTs but also, and even more important, the building of successful analytical platforms for the detection of different bioanalytes like NADH, glucose, DNA and dopamine.
authors.affiliation: INFIQC, Departamento de Fisicoquímica, Facultad de Ciencias Químicas Universidad Nacional de Córdoba, Ciudad Universitaria, 5000 Córdoba, Argentina. Electronic address: eprimo@fcq.unc.edu.ar.
authors.forename: E N
authors.initials: EN
authors.lastname: Primo
authors.forename: F A
authors.initials: FA
authors.lastname: Gutierrez
authors.forename: G L
authors.initials: GL
authors.lastname: Luque
authors.forename: P R
authors.initials: PR
authors.lastname: Dalmasso
authors.forename: A
authors.initials: A
authors.lastname: Gasnier
authors.forename: Y
authors.initials: Y
authors.lastname: Jalit
authors.forename: M
authors.initials: M
authors.lastname: Moreno
authors.forename: M V
authors.initials: MV
authors.lastname: Bracamonte
authors.forename: M Eguílaz
authors.initials: ME
authors.lastname: Rubio
authors.forename: M L
authors.initials: ML
authors.lastname: Pedano
authors.forename: M C
authors.initials: MC
authors.lastname: Rodríguez
authors.forename: N F
authors.initials: NF
authors.lastname: Ferreyra
authors.forename: M D
authors.initials: MD
authors.lastname: Rubianes
authors.forename: S
authors.initials: S
authors.lastname: Bollo
authors.forename: G A
authors.initials: GA
authors.lastname: Rivas
mesh_terms: D015374:Biosensing Techniques; D004298:Dopamine / Q000032:analysis; D055664:Electrochemical Techniques; D005947:Glucose / Q000032:analysis; D006801:Humans; D037742:Nanotubes, Carbon / Q000737:chemistry*; D011108:Polymers / Q000737:chemistry*
chemical_list: D037742:Nanotubes, Carbon; D011108:Polymers; D005947:Glucose; D004298:Dopamine
keywords: Bioanalytes; Biopolymers; Carbon nanotubes dispersion; Electrochemical (bio)sensors; Glassy carbon electrodes; Non-covalent functionalization