Electronic Structure of G4-DNA by Scanning Tunneling Spectroscopy

Autor: Lior Sagiv, Tatiana Molotsky, Errez Shapir, Rosa Di Felice, Danny Porath, Alexander Kotlyar

Publikováno v: Journal of physical chemistry. C (2010).
info:cnr-pdr/source/autori:Shapir E., L. Sagiv, T. Molotsky, A.B. Kotlyar, R. Di Felice, and D. Porath/titolo:Electronic Structure of G4-DNA by Scanning Tunneling Spectroscopy/doi:/rivista:Journal of physical chemistry. C/anno:2010/pagina_da:/pagina_a:/intervallo_pagine:/volume

G4-DNA molecules were recently reported as candidates for molecular electronics because of their higher stiffness and polarizability with respect to double-stranded DNA. Short G4-DNA structures have been traditionally studied in the past because of t

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::90788233a97f063606c98f8b852d95ff
https://doi.org/10.1021/jp107952y

The Puzzle of Contrast Inversion in DNA STM Imaging

Autor: Danny Porath, Alexander Kotlyar, Gianaurelio Cuniberti, Hezy Cohen, Juyeon Yi, Errez Shapir

Publikováno v: The Journal of Physical Chemistry B. 109:14270-14274

DNA has been at the center of an imaging effort since the invention of the scanning tunneling microscope (STM). In some of the STM imaging reports the molecules appeared with negative contrast, i.e., "submerged" under the metal background and darker.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::714d44c5fc6915572f2dae58cd121098
https://doi.org/10.1021/jp052738e

Energy gap reduction in DNA by complexation with metal ions

Autor: Rosa Di Felice, Alexander Kotlyar, Danny Porath, Errez Shapir, Giorgia Brancolini, Tatiana Molotsky

Publikováno v: Advanced materials (Weinh., Print) (2011).
info:cnr-pdr/source/autori:Shapir, E (Shapir, Errez)3,4; Brancolini, G (Brancolini, Giorgia)5; Molotsky, T (Molotsky, Tatiana)1,2; Kotlyar, AB (Kotlyar, Alexander B.)1,2; Di Felice, R (Di Felice, Rosa)5; Porath, D (Porath, Danny)3,4/titolo:Energy Gap Reduction in DNA by Complexation with Metal Ions/doi:/rivista:Advanced materials (Weinh., Print)/anno:2011/pagina_da:/pagina_a:/intervallo_pagine:/volume

The electrical properties of single double-stranded DNA (dsDNA) molecules, and in particular conductivity through dsDNA, have several implications in the contexts of biology and nanotechnology. This importance led to a series of investigations [ 1 �

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::32db147ca871fac7815a69e39074359c
https://pubmed.ncbi.nlm.nih.gov/21837629

Electronic structure of single DNA molecules resolved by transverse scanning tunnelling spectroscopy

Autor: Gianaurelio Cuniberti, Rosa Di Felice, Errez Shapir, Dmitry A. Ryndyk, Hezy Cohen, Arrigo Calzolari, Danny Porath, Carlo Cavazzoni, Alexander Kotlyar

Publikováno v: Nature materials
7 (2008): 68–74. doi:10.1038/nmat2060
info:cnr-pdr/source/autori:Shapir, E; Cohen, H; Calzolari, A; Cavazzoni, C; Ryndyk, DA; Cuniberti, G; Kotlyar, A; Di Felice, R; Porath, D/titolo:Electronic structure of single DNA molecules resolved by transverse scanning tunnelling spectroscopy/doi:10.1038%2Fnmat2060/rivista:Nature materials (Print)/anno:2008/pagina_da:68/pagina_a:74/intervallo_pagine:68–74/volume:7

Attempts to resolve the energy-level structure of single DNA molecules by scanning tunnelling spectroscopy span over the past two decades, owing to the unique ability of this technique to probe the local density of states of objects deposited on a su

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d6127cee1c4323b773695d3b4f862bdb

High-resolution STM imaging of novel poly(G)-poly(C) DNA molecules

Autor: Danny Porath, Alexander Kotlyar, Hezy Cohen, Natalia Borovok, Errez Shapir

Publikováno v: The journal of physical chemistry. B. 110(9)

High-resolution scanning tunneling microscopy (STM) imaging of single double-stranded poly(G)-poly(C) DNA molecules, made by a novel synthesis method, shows the molecules morphology. The STM images reveal a periodic structure of approximately 4 nm, s

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bae32c09f967bcbb5e881cda2e9c7034
https://pubmed.ncbi.nlm.nih.gov/16509745