title: Molecular conductance of double-stranded DNA evaluated by electrochemical capacitance spectroscopy.
abstract: Conductance was measured in two different double stranded DNA (both with 20 bases), the more conducting poly(dG)-poly(dC) (ds-DNAc) and the less conducting poly(dA)-poly(dT) (ds-DNAi), by means of Electrochemical Capacitance Spectroscopy (ECS). The use of the ECS approach, exemplified herein with DNA nanowires, is equally a suitable and time-dependent advantageous alternative for conductance measurement of molecular systems, additionally allowing better understanding of the alignment existing between molecular scale conductance and electron transfer rate.
authors.affiliation: Instituto de Química, Universidade Estadual Paulista, (Nanobionics Research Group), CP 355, 14800-900, Araraquara, SP, Brazil.
authors.forename: W C
authors.initials: WC
authors.lastname: Ribeiro
authors.affiliation: Requimte, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, Porto, Portugal.
authors.forename: L M
authors.initials: LM
authors.lastname: Gonçalves
authors.affiliation: Grup de Sensors & Biosensors, Unitat de Química Analítica, Bloc de Ciencias e Biociencias, Universitat Autònoma de Barcelona, Bellaterra, Spain.
authors.forename: S
authors.initials: S
authors.lastname: Liébana
authors.affiliation: Grup de Sensors & Biosensors, Unitat de Química Analítica, Bloc de Ciencias e Biociencias, Universitat Autònoma de Barcelona, Bellaterra, Spain.
authors.forename: M I
authors.initials: MI
authors.lastname: Pividori
authors.affiliation: Instituto de Química, Universidade Estadual Paulista, (Nanobionics Research Group), CP 355, 14800-900, Araraquara, SP, Brazil.
authors.forename: P R
authors.initials: PR
authors.lastname: Bueno
mesh_terms: D004247:DNA / Q000737:chemistry*; D058266:Dielectric Spectroscopy / Q000379:methods*; D025802:Electric Capacitance; D004553:Electric Conductivity; D004579:Electron Transport; D008956:Models, Chemical; D036103:Nanotechnology; D053770:Nanowires / Q000737:chemistry*
chemical_list: D004247:DNA