Mechanical and electroconductive properties of spatially distributed double stranded DNA arrays on Au (111)

Erts, Donāts; Malinovskis, Uldis; Muižnieks, Indriķis; Tuite, Eimer

doi:10.1016/j.tsf.2007.11.072

Cited by 3 publications

(1 citation statement)

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“…Hence it is still necessary to get a better understanding of the conductance of DNA molecules, especially on single DNA molecules. Very recently, conductive atomic force microscopy (CAFM) has been attempted to investigate the conductive properties of DNA molecules [13][14][15][16][17], and various current-voltage characteristics have been obtained on single DNA molecules. However, CAFM causes considerable damage to biological 3 Author to whom any correspondence should be addressed.…”

Section: Introductionmentioning

confidence: 99%

The conductive properties of single DNA molecules studied by torsion tunneling atomic force microscopy

Wang¹,

Niu²,

Jiang³

et al. 2013

Nanotechnology

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The conductive properties of single natural λ-DNA molecules are studied by torsion tunneling atomic force microscopy (TR-TUNA). The currents both parallel to and perpendicular to the DNA chains are investigated, but only weak or even no current signals are detected by TR-TUNA. To improve the conductance of DNA molecules, silver and copper metallized DNAs are fabricated and their conductivities are checked by TR-TUNA. It is found that for both Cu- and Ag-DNAs, the conductivity perpendicular to the DNA chain is enhanced significantly as the metal clusters are attached to the DNA chains. But parallel to the chain the electrical transport is still weak, most probably due to the 'beads-on-a-string' constructions of metallized DNAs.

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Section: Introductionmentioning

confidence: 99%

The conductive properties of single DNA molecules studied by torsion tunneling atomic force microscopy

Wang¹,

Niu²,

Jiang³

et al. 2013

Nanotechnology

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Click Modification of Diazido Acridine Intercalators: A Versatile Route towards Decorated DNA Nanostructures

Hafshejani

Watson

Tuite

et al. 2015

Chemistry A European J

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Synthesis and binding of proflavine diazides as functional intercalators for directed assembly on DNA

et al. 2013

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Proflavine diazide (PD) with amido-azide substituents on the amine groups and its N-methylated analogue (MePD) bind strongly to DNA by nearest-neighbour intercalation with little sequence selectivity, presenting reactive azide groups in the major groove. PD is neutral in aqueous solution but experiences binding-coupled protonation on interaction with DNA with an apparent pK a shift of 2.5 units. MePD can be click modified in situ on DNA with alkyne-functionalised thienyl-pyrrole as a precursor for conducting polymer synthesis, and remains intercalated after reaction with the substituents aligned in the groove.

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Mechanical and electroconductive properties of spatially distributed double stranded DNA arrays on Au (111)

Cited by 3 publications

References 54 publications

The conductive properties of single DNA molecules studied by torsion tunneling atomic force microscopy

The conductive properties of single DNA molecules studied by torsion tunneling atomic force microscopy

Click Modification of Diazido Acridine Intercalators: A Versatile Route towards Decorated DNA Nanostructures

Synthesis and binding of proflavine diazides as functional intercalators for directed assembly on DNA

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