The Electrical Properties of Gold Nanoparticle Assemblies Linked by DNA

Park, Soo‐Young; Lazarides, Anne A.; Mirkin, Chad A.; Brazis, Paul; Kannewurf, Carl R.; Letsinger, Robert L.

doi:10.1002/1521-3773(20001103)39:21<3845::aid-anie3845>3.0.co;2-o

Cited by 150 publications

(94 citation statements)

References 23 publications

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“…Exciting application of metal nanoparticles in electronics, 1 magnetic memories, 2 biolabelling/biosensors 3 and catalysis 4 has to a large extent motivated research in synthesis methodologies. Application of metal nanoparticles in catalysis has predictably centred around Pt and Pd nanoparticles.…”

supporting

confidence: 83%

A new method for the synthesis of hydrophobized, catalytically active Pt nanoparticles

et al. 2002

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supporting

confidence: 83%

A new method for the synthesis of hydrophobized, catalytically active Pt nanoparticles

et al. 2002

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“…This effect is unique as none of the other chemical or biological compounds can cause the nematization (complete unwinding) of the spatial structure of CLCD particles as a result of their interaction with DNA molecules at the room temperature. Obtained results demonstrate unambiguously that ds DNA molecules, after they are doped with nano-Au, are collinearly arranged in order to form planar suprastructures [36][37][38][39] despite the fact that DNA molecules possess chiral and anisotropic properties.…”

Section: Changes In CD Spectra Caused By the Doping Of Dna Clcd Partimentioning

confidence: 85%

The Physicochemical and Nanotechnological Approaches to Creation of “Rigid” DNA Nanoconstructions

Yevdokimov¹,

Salyanov²,

Штыкова³

et al. 2014

TONANOJ

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Abstract:Two different approaches to the creation of "rigid" (gel-like) DNA particles (or DNA nanoconstructions) are considered. The physicochemical approach is based on the formation of nanobridges between double-stranded DNA molecules ordered in quasinematic layers of cholesteric liquid-crystalline dispersion (CLCD) particles or their salting-out. This approach represents by itself a "chemical gelation" of DNA molecules realized inside the nanometric DNA particles. The formed "rigid" DNA particles have unique physicochemical properties. The nanotechnological approach is based on induction of "physical gelation" as a result of the formation of Au-clusters in the "free" space between double-stranded DNA molecules ordered in CLCD particles. This approach results in the formation of a new "rigid" DNA material. Its distinctive peculiarity, in contrast to the chemically bonded "rigid" DNA particles, consists in a very weak binding affinity to the nuclear membrane filter used for atomic force microscopy. This opens up a possibility for easy manipulations with CLCD particles doped with gold nanoparticles.Keywords: DNA liquid-crystalline dispersions, nanoconstructions of DNA, nanotechnology of nucleic acids, structure of DNA liquid crystals.

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“…In particular, DNA has the potential of assembling networks with a variety of geometries, such as: loops, arrays, cubes, knots, and nanolattices [50,51].…”

Section: Transport Through Dna Moleculementioning

confidence: 99%

Rate-equation calculations of the current flow through two-site molecular device and DNA-based junction

Walczak

2006

Open Physics

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Abstract:Here we present the calculations of incoherent current flowing through the two-site molecular device as well as the DNA-based junction within the rate-equation approach. Selected phenomena of interest are discussed in detail. The structural asymmetry of a two-site molecule results in a rectification effect, which can be neutralized by an asymmetric voltage drop at the molecule-metal contacts due to coupling asymmetry. The results received for the poly(dG)-poly(dC) DNA molecule reveal the coupling-and temperature-independent saturation effect of the current at high voltages, establishing for short chains the inverse square distance dependence. Additionally we document the conductance peak shifting in the direction of higher voltages due to a temperature decrease.

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The Electrical Properties of Gold Nanoparticle Assemblies Linked by DNA

Cited by 150 publications

References 23 publications

A new method for the synthesis of hydrophobized, catalytically active Pt nanoparticles

A new method for the synthesis of hydrophobized, catalytically active Pt nanoparticles

The Physicochemical and Nanotechnological Approaches to Creation of “Rigid” DNA Nanoconstructions

Rate-equation calculations of the current flow through two-site molecular device and DNA-based junction

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