Tris(hydroxymethyl)phosphine-Capped Gold Particles Templated by DNA as Nanowire Precursors

Harnack, O.; Ford, William E.; Yasuda, A.; Wessels, Jurina M.

doi:10.1021/nl020259a

Cited by 200 publications

(159 citation statements)

References 27 publications

Supporting

Mentioning

152

Contrasting

Unclassified

Order By: Relevance

“…While this article was in preparation, nanowires were produced by electroless gold plating of DNA and reported to have conductive properties similar to those of metallized NM fibers (23). Just as plastic films and glass may share an important physical property (transparency) but differ in other ways that make them suitable for different purposes, wire templates formed by DNA and amyloid protein fibers have similar conductive properties but are so fundamentally different in other ways that they will be suited to different purposes.…”

Section: Discussionmentioning

confidence: 99%

“…The first biomolecular templates used for microstructures were phospholipid tubules (18), and since then other selfassembling rod-like structures have been assessed for their strengths and weaknesses as nanostructural templates, including DNA, bacteriophages, and microtubules (2,3,5,9,13,14,(19)(20)(21)(22)(23)(24). These materials have many positive characteristics as nanostructure materials.…”

mentioning

confidence: 99%

See 1 more Smart Citation

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.

703

583

View full text Add to dashboard Cite

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.

show abstract

Section: Discussionmentioning

confidence: 99%

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.

703

583

View full text Add to dashboard Cite

show abstract

“…2 In this paper, we support the proposition that DNA molecules are ideal templates for bottom-up nanofabrication. [3][4][5][6][7] Previous work has demonstrated that DNA satisfies the last of these requirements as a template. For example, Keren et al showed that sequence-specific molecular lithography is possible; they used proteins that bind to specific sites on DNA to create patterns of metal coatings on single molecules of DNA.…”

mentioning

confidence: 99%

Combing of Molecules in Microchannels (COMMIC): A Method for Micropatterning and Orienting Stretched Molecules of DNA on a Surface

Petit

Carbeck

2003

Nano Lett.

View full text Add to dashboard Cite

This paper presents a new method for creating microscopic patterns of stretched and oriented molecules of DNA on a surface. Combing of molecules in microchannels (COMMIC), a process by which molecules are deposited and stretched onto a surface by the passage of an air−water interface, creates these patterns. This approach demonstrates that the direction of stretching of the molecules is always perpendicular to the air−water interface; the shape and motion of this interface serve as an effective local field directing the chains dynamically as they are stretched onto the surface. The geometry of the microchannel directs the placement of the DNA molecules, while the geometry of the air− water interface directs the local orientation and curvature of the molecules. This ability to control both the placement and orientation of chains has implication for the use of COMMIC in genetic analysis and in the bottom-up approach to nanofabrication.

show abstract

“…[1][2][3][4][5] Molecular combing is a widely used technique for stretching, patterning, and immobilizing DNA molecules onto a flat solid surface by a dewetting process. 5 However, the application of this technique is limited by the poor control of locations and lengths of the stretched DNA.…”

Section: Introductionmentioning

confidence: 99%

Patterning nanowire and micro-/nanoparticle array on micropillar-structured surface: Experiment and modeling

et al. 2010

View full text Add to dashboard Cite

DNA molecules in a solution can be immobilized and stretched into a highly ordered array on a solid surface containing micropillars by molecular combing technique. However, the mechanism of this process is not well understood. In this study, we demonstrated the generation of DNA nanostrand array with linear, zigzag, and fork-zigzag patterns and the microfluidic processes are modeled based on a deforming body-fitted grid approach. The simulation results provide insights for explaining the stretching, immobilizing, and patterning of DNA molecules observed in the experiments.

show abstract

Tris(hydroxymethyl)phosphine-Capped Gold Particles Templated by DNA as Nanowire Precursors

Cited by 200 publications

References 27 publications

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

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

Combing of Molecules in Microchannels (COMMIC): A Method for Micropatterning and Orienting Stretched Molecules of DNA on a Surface

Patterning nanowire and micro-/nanoparticle array on micropillar-structured surface: Experiment and modeling

Contact Info

Product

Resources

About