Two-Dimensional Supramolecular Nanopatterns Formed by the Coadsorption of Guanine and Uracil at the Liquid/Solid Interface

A novel supramolecular nanostructure formed by the coadsorption of the complementary nucleobases guanine (G) and uracil (U) at the liquid (1-octanol solvent)/solid (graphite) interface is revealed by scanning tunneling microscopy (STM). The GU supramolecular structure is distinctly different from th...

Full description

Saved in:
Bibliographic Details
Published in:Journal of the American Chemical Society 2008-01, Vol.130 (2), p.695-702
Main Authors: Mamdouh, Wael, Kelly, Ross E. A, Dong, Mingdong, Kantorovich, Lev N, Besenbacher, Flemming
Format: Article
Language:English
Subjects:
Adsorption
Graphite - chemistry
Guanine - chemistry
Microscopy, Scanning Tunneling
Nanostructures - chemistry
Octanols - chemistry
Uracil - chemistry
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A novel supramolecular nanostructure formed by the coadsorption of the complementary nucleobases guanine (G) and uracil (U) at the liquid (1-octanol solvent)/solid (graphite) interface is revealed by scanning tunneling microscopy (STM). The GU supramolecular structure is distinctly different from the structures observed by STM when the individual nucleobases (NB) are adsorbed on graphite in the control experiments. Using a systematic methodology and ab initio density functional theory (DFT), an atomistic structural model is proposed for the supramolecular coadsorbed GU structure, which consists of a periodic repetition of cyclic units based on the strongest GU base pairing.
ISSN:0002-7863
1520-5126
DOI:10.1021/ja076832f