title: Comparative electrostatic force microscopy of tetra- and intra-molecular G4-DNA.
abstract: Two forms of G4-DNA, with parallel and pairwise anti-parallel strands, are studied using atomic force microscopy. The directionality of the strands affects the molecules' structural properties (different height and length) and their electrical polarizability. Parallel G4-DNA is twice as polarizable as anti-parallel G4-DNA, suggesting it is a better electrical wire for bio-nanoelectronics.
authors.affiliation: Institute of Chemistry and The Harvey M. Krueger Center for Nanoscience and Nanotechnology, The Hebrew University of Jerusalem, Edmond J. Safra Campus, 91904, Jerusalem, Israel.
authors.forename: Gideon I
authors.initials: GI
authors.lastname: Livshits
authors.forename: Jamal
authors.initials: J
authors.lastname: Ghabboun
authors.forename: Natalia
authors.initials: N
authors.lastname: Borovok
authors.forename: Alexander B
authors.initials: AB
authors.lastname: Kotlyar
authors.forename: Danny
authors.initials: D
authors.lastname: Porath
mesh_terms: D004247:DNA / Q000737:chemistry*; D054856:G-Quadruplexes; D018625:Microscopy, Atomic Force / Q000379:methods*; D008958:Models, Molecular; D055672:Static Electricity
chemical_list: D004247:DNA
keywords: DNA nanoelectronics; G4-DNA; electrostatic force microscopy (EFM); molecular electronics