Electronic transport in DNA.
@article{Klotsa2005ElectronicTI, title={Electronic transport in DNA.}, author={Daphne Klotsa and Rudolf A. R{\"o}mer and Matthew S. Turner}, journal={Biophysical journal}, year={2005}, volume={89 4}, pages={ 2187-98 } }
We study the electronic properties of DNA by way of a tight-binding model applied to four particular DNA sequences. The charge transfer properties are presented in terms of localization lengths (crudely speaking, the length over which electrons travel). Various types of disorder, including random potentials, are employed to account for different real environments. We have performed calculations on poly(dG)-poly(dC), telomeric-DNA, random-ATGC DNA, and lambda-DNA. We find that random and lambda…
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References
SHOWING 1-10 OF 90 REFERENCES
Charge transport in DNA-based devices
- Physics
- 2004
It is concluded that electrical transport is feasible in short DNA molecules, in bundles and networks, but blocked in long single molecules that are attached to surfaces.
Long-range charge hopping in DNA.
- Chemistry, PhysicsProceedings of the National Academy of Sciences of the United States of America
- 1999
The fundamental mechanisms of charge migration in DNA are pertinent for current developments in molecular electronics and electrochemistry-based chip technology and electron transport is expected to be nearly sequence independent because of the similarity of the reduction potentials of the thymine and of the cytosine.
Backbone-induced semiconducting behavior in short DNA wires
- Physics
- 2002
This model provides a correct description of the molecular resonances which determine the quasi-linear part of the current out of the gap region and is in a good agreement with the recent finding of semiconducting behavior in short poly(G)-poly(C) DNA oligomers.
A simple model of the charge transfer in DNA-like substances
- Physics
- 2005
A discrete nonlinear Schrodinger equation is used to describe electrons propagating along the sugar-phosphate backbone of the DNA molecule and it is found that, for a given nonlinearity, the transport is controlled by J, a parameter which relates to the electronic coupling between the different molecules on the backbone.
On the Long-Range Charge Transfer in DNA
- Physics, Biology
- 2000
The sequence dependence of charge transport through stacked Watson−Crick base pairs was analyzed for coherent hole motion interrupted by a temporary charge localization on guanine bases, and it is predicted that the relative charge-transfer rate varies in inverse proportion to the sequence length at short distances, with change to the slow exponential decay at longer distances.
Direct measurement of electrical transport through DNA molecules
- PhysicsNature
- 2000
Measurements of electrical transport through individual 10.4-nm-long, double-stranded poly(G)-poly(C) DNA molecules connected to two metal nanoelectrodes that indicate, by contrast, large-bandgap semiconducting behaviour are presented.
Long-range DNA charge transport.
- Chemistry, BiologyThe Journal of organic chemistry
- 2003
Different features of DNA charge transport chemistry are discussed, including applications as well as possible biological consequences and opportunities, according to sequence-dependent DNA structure and dynamics.
Electron transfer between bases in double helical DNA.
- Physics, ChemistryScience
- 1999
Fluorescent analogs of adenine that selectively oxidize guanine were used to investigate photoinduced electron transfer through the DNA pi-stack as a function of reactant stacking and energetics, and may resolve the range of disparate results previously reported.