@article{ISI:000495070100023,
 abstract = {Inherent molecular fluctuations are known to have a significant
influence on the charge transport properties of biomolecules like DNA,
PNA and proteins. In this work, we show ways to control these
fluctuations and further demonstrate their use to enhance the
conductance of two widely studied molecular wires, namely dsDNA (DNA)
and G4 Quadruplex (G4-Quad). We quantify the molecular fluctuation in
terms of the root mean square deviation (RMSD) of the molecule. In the
case of DNA, we use temperature to control the fluctuations, while in
the case of G4-Quad the fluctuations are tuned by the ions inside the
pore. The electronic coupling between the bases of dsDNA and G4-Quad,
which measures the conductance of these molecular wires, shows a
non-monotonic behaviour with the increase in fluctuation. We find values
of fluctuation which give rise to maximum electronic coupling and hence
high conductivity for both the cases. In the case of DNA, these optimal
fluctuations (similar to 2.5 angstrom) are achieved at a temperature of
210 K, which gives rise to an electronic coupling of 0.135 eV between
the DNA bases. The optimal fluctuations in G4-Quad are achieved (similar
to 7 angstrom) in a 4 base pair long system with 2 Na+ ions inside the
pore, giving rise to an electronic coupling of 0.09 eV.},
 author = {Bag, Saientan and Maiti, Prabal K.},
 doi = {10.1039/c9cp03589c},
 eissn = {1463-9084},
 issn = {1463-9076},
 journal = {PHYSICAL CHEMISTRY CHEMICAL PHYSICS},
 month = {NOV 14},
 number = {42},
 pages = {23514-23520},
 times-cited = {0},
 title = {Tuning molecular fluctuation to boost the conductance in DNA based
molecular wires},
 unique-id = {ISI:000495070100023},
 volume = {21},
 year = {2019}
}