Browse by author
Lookup NU author(s): Dr Eimer TuiteORCiD
Full text for this publication is not currently held within this repository. Alternative links are provided below where available.
Spatially distributed DNA oligomer arrays on Au(111) surfaces were created by one-step co-assembly of mixed monolayers of alkanethiol-conjugated DNA and mercaptohexanol (MCH). Tapping-mode AFM was used to visualize the distribution of DNA molecules on the surface and to study the mechanical properties of individual molecules. The DNA coating density increased nonlinearly with increasing mole fraction of DNA oligomer to MCH in the coating solution. For imaging in air, where surfaces are coated with a thin layer of water, the interaction between the AFM tip and the different structures on the monolayer varies between attractive and repulsive depending on the tapping amplitude, set-point ratio, and tip shape. It was found that both duplex and single-stranded DNA molecules extend approximately vertically upward from the surface.
Author(s): Erts D, Polyakov B, Olin H, Tuite E
Publication type: Article
Publication status: Published
Journal: Journal of Physical Chemistry B
Year: 2003
Volume: 107
Issue: 15
Pages: 3591-3597
ISSN (print): 1520-6106
ISSN (electronic): 1520-5207
Publisher: American Chemical Society
URL: http://dx.doi.org/10.1021/jp0261657
DOI: 10.1021/jp0261657
Altmetrics provided by Altmetric
