Template synthesis of polymer-insulated colloidal gold nanowires with reactive ends

Yu, Jong‐Sung; Kim, Jeong Yeon; Lee, Seungho; Mbindyo, Jeremiah K. N.; Martin, Benjamin; Mallouk, Thomas E.

doi:10.1039/b007999p

Cited by 64 publications

(51 citation statements)

References 15 publications

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“…The fabrication of nanoscale flexible hinges between vanadium oxide segments was accomplished by utilizing the layer-by-layer electrostatically self-assembly of the turbostratic thiol-intercalated VO x nanofibers. It represents an inherent improvement to the synthetic method described by Yu et al, [45] where charged nanorods are entirely encapsulated with polyelectrolytes through layer-bylayer electrostatic self-assembly. [46] Their approach entails iteratively dipping the charged nanorods in alternating baths of positive and negative polyelectrolytes to create encapsulating polymeric sheaths, beginning with a monolayer and building to a predetermined thickness with multiple layers.…”

Section: Turbostratic Barcoded Inorganic-organic Morphology and Molecmentioning

confidence: 99%

Low‐Dimensional, Hinged Bar‐code Metal Oxide Layers and Free‐Standing, Ordered Organic Nanostructures from Turbostratic Vanadium Oxide

O’Dwyer

Lavayen

Fuenzalida

et al. 2008

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Section: Turbostratic Barcoded Inorganic-organic Morphology and Molecmentioning

confidence: 99%

Low‐Dimensional, Hinged Bar‐code Metal Oxide Layers and Free‐Standing, Ordered Organic Nanostructures from Turbostratic Vanadium Oxide

O’Dwyer

Lavayen

Fuenzalida

et al. 2008

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“…One significant challenge is the construction of nanowires to enable the electrical connection of such structures. Biomolecules may provide a solution to the difficulty of manufacturing wires at this scale because they naturally exist in the nanometer size range (1)(2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13). In addition, biomolecules can exhibit selfassembly, which would remove the need to individually pattern them into structures, and greatly aid the mass production of nanostructures.…”

mentioning

confidence: 99%

Conducting nanowires built by controlled self-assembly of amyloid fibers and selective metal deposition

Scheibel

Parthasarathy

Sawicki

et al. 2003

Proc. Natl. Acad. Sci. U.S.A.

701

583

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Recent research in the field of nanometer-scale electronics has focused on the operating principles of small-scale devices and schemes to realize useful circuits. In contrast to established ''topdown'' fabrication techniques, molecular self-assembly is emerging as a ''bottom-up'' approach for fabricating nanostructured materials. Biological macromolecules, especially proteins, provide many valuable properties, but poor physical stability and poor electrical characteristics have prevented their direct use in electrical circuits. Here we describe the use of self-assembling amyloid protein fibers to construct nanowire elements. Self-assembly of a prion determinant from Saccharomyces cerevisiae, the N-terminal and middle region (NM) of Sup35p, produced 10-nm-wide protein fibers that were stable under a wide variety of harsh physical conditions. Their lengths could be roughly controlled by assembly conditions in the range of 60 nm to several hundred micrometers. A genetically modified NM variant that presents reactive, surfaceaccessible cysteine residues was used to covalently link NM fibers to colloidal gold particles. These fibers were placed across gold electrodes, and additional metal was deposited by highly specific chemical enhancement of the colloidal gold by reductive deposition of metallic silver and gold from salts. The resulting silver and gold wires were Ϸ100 nm wide. These biotemplated metal wires demonstrated the conductive properties of a solid metal wire, such as low resistance and ohmic behavior. With such materials it should be possible to harness the extraordinary diversity and specificity of protein functions to nanoscale electrical circuitry.

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“…The stability of these 1 mm in diameter membranes is limited to a few hours to at most a day. However, forming the bilayers on millipore filters increases their stability to several days, and formation on nanopore filters may dramatically increase their lifetime, as observed in other systems (1,29).…”

Section: Mental Procedures) Another Feature Of This Self-organizing mentioning

confidence: 99%

Self-organization of self-assembled photonic materials into functional devices: Photo-switched conductors

Drain

2002

Proc. Natl. Acad. Sci. U.S.A.

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Linear porphyrin arrays self-assembled by either hydrogen bonding or metal ion coordination self-organize into lipid bilayer membranes. The length of the transmembrane assemblies is determined both by the thermodynamics of the intermolecular interactions in the supermolecule and by the dimension and physical chemical properties of the bilayer. Thus, the size of the porphyrin assembly can self-adjust to the thickness of the bilayer. An aqueous electron acceptor is placed on one side of the membrane and an electron donor is placed on the opposite side. When illuminated with white light, substantial photocurrents are observed. Only the assembled structures give rise to the photocurrent, as no current is observed from any of the component molecules. The fabrication of this photogated molecular electronic conductor from simple molecular components exploits several levels of self-assembly and selforganization.

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Template synthesis of polymer-insulated colloidal gold nanowires with reactive ends

Cited by 64 publications

References 15 publications

Low‐Dimensional, Hinged Bar‐code Metal Oxide Layers and Free‐Standing, Ordered Organic Nanostructures from Turbostratic Vanadium Oxide

Low‐Dimensional, Hinged Bar‐code Metal Oxide Layers and Free‐Standing, Ordered Organic Nanostructures from Turbostratic Vanadium Oxide

Conducting nanowires built by controlled self-assembly of amyloid fibers and selective metal deposition

Self-organization of self-assembled photonic materials into functional devices: Photo-switched conductors

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