title: Electrochemical impedance study of the interaction of metal ions with unlabeled PNA.
abstract: The interactions of the metal ions Mg(2+), Zn(2+), Ni(2+), and Co(2+) with thin films of peptide nucleic acids (PNAs) were studied by electrochemical impedance spectroscopy (EIS), and the results show that Zn(2+), Ni(2+) and Co(2+) interacted favorably with the PNA film involving the backbone and the nucleobases with the exception of Mg(2+) for which the interaction with the backbone appears to be dominant.
authors.affiliation: Department of Chemistry, Beijing Normal University, Beijing, 100875, China.
authors.forename: Lan
authors.initials: L
authors.lastname: Gao
authors.forename: Congjuan
authors.initials: C
authors.lastname: Li
authors.forename: Xiaohong
authors.initials: X
authors.lastname: Li
authors.forename: Heinz-Bernhard
authors.initials: HB
authors.lastname: Kraatz
mesh_terms: D003035:Cobalt / Q000737:chemistry*; D055664:Electrochemical Techniques / Q000379:methods*; D007477:Ions / Q000737:chemistry; D008274:Magnesium / Q000737:chemistry*; D008567:Membranes, Artificial; D009532:Nickel / Q000737:chemistry*; D020135:Peptide Nucleic Acids / Q000737:chemistry*; D015032:Zinc / Q000737:chemistry*
chemical_list: D007477:Ions; D008567:Membranes, Artificial; D020135:Peptide Nucleic Acids; D003035:Cobalt; D009532:Nickel; D008274:Magnesium; D015032:Zinc