Seeding, Plating and Electrical Characterization of Gold Nanowires Formed on Self-Assembled DNA Nanotubes

Ranasinghe, Dulashani R.; Aryal, Basu R.; Westover, Tyler R.; Jia, Sisi; Davis, Robert C.; Harb, John N.; Schulman, Rebecca

doi:10.3390/molecules25204817

Cited by 7 publications

(12 citation statements)

References 43 publications

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“…The deposition of Au NP decorated DNA nanotubes on substrates still needs better surface placement and alignment, as they created aggregated structures on the surface. Recently, Ranasinghe et al [ 51 ] formed conductive NW structures on DNA nanotubes using Au NRs and Pd seeds, combined with Au electroless plating. These DNA nanotubes were designed to connect in an end-to-end fashion, providing bridges with different separation distances and relative orientation [ 52 ].…”

Section: Fabricationmentioning

confidence: 99%

Bottom-Up Fabrication of DNA-Templated Electronic Nanomaterials and Their Characterization

et al. 2021

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Bottom-up fabrication using DNA is a promising approach for the creation of nanoarchitectures. Accordingly, nanomaterials with specific electronic, photonic, or other functions are precisely and programmably positioned on DNA nanostructures from a disordered collection of smaller parts. These self-assembled structures offer significant potential in many domains such as sensing, drug delivery, and electronic device manufacturing. This review describes recent progress in organizing nanoscale morphologies of metals, semiconductors, and carbon nanotubes using DNA templates. We describe common substrates, DNA templates, seeding, plating, nanomaterial placement, and methods for structural and electrical characterization. Finally, our outlook for DNA-enabled bottom-up nanofabrication of materials is presented.

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Section: Fabricationmentioning

confidence: 99%

Bottom-Up Fabrication of DNA-Templated Electronic Nanomaterials and Their Characterization

et al. 2021

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“…For example, Ag structures were formed by first binding and then reducing Ag + ions onto DNA strands; subsequently, the reduced Ag was grown into desired patterns using electroless Ag plating solution. 26−29 Jia et al 30 Au nanoparticles 31−36 or nanorods 13,23,37,38 through electroless deposition of Au in solution.…”

Section: ■ Introductionmentioning

confidence: 99%

“…DNA origami architectures have served as platforms for assembling various nanoparticles or nanorods such as gold (Au), − copper (Cu), silver (Ag), and carbon nanotubes (CNTs) to form conductive nanostructures. Furthermore, the use of semiconducting materials such as cadmium sulfide (CdS), tellurium (Te), and organic semiconductors has broadened opportunities to build DNA-templated semiconductor nanodevices, although the practice is at an early stage.…”

Section: Introductionmentioning

confidence: 99%

“…For example, Ag structures were formed by first binding and then reducing Ag + ions onto DNA strands; subsequently, the reduced Ag was grown into desired patterns using electroless Ag plating solution. − Jia et al created alphabet letters of Cu and Ag by first binding metal ions onto DNA strands and then performing electroless deposition of these metals on the desired sites on DNA templates through chemical reduction. Moreover, DNA origami-templated Au nanowires of various lengths from nanometer to micrometer scale have been made by connecting Au nanoparticles − or nanorods ,,, through electroless deposition of Au in solution.…”

Section: Introductionmentioning

confidence: 99%

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Annealing of Polymer-Encased Nanorods on DNA Origami Forming Metal–Semiconductor Nanowires: Implications for Nanoelectronics

Aryal

Ranasinghe

Pang

et al. 2021

ACS Appl. Nano Mater.

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DNA origami-assembled metal−semiconductor junctions have been formed as a step toward application of these nanomaterials in nanoelectronics. Previously, techniques such as electroless plating, electrochemical deposition, or photochemical reduction have been used to connect metal and semiconductor nanomaterials into desired patterns on DNA templates. To improve over prior work and provide a more general framework for the creation of electronic nanodevices as an alternative nanofabrication step, we have developed a method to connect gold (Au) and tellurium (Te) nanorods on a single DNA origami template without electroplating by annealing after coating with a heat-resistant polymer. Bar DNA origami templates (17 nm × 410 nm) were seeded site-specifically with Au and Te nanorods in an alternating manner. These templates were then coated with a polymer and annealed at different temperatures. At 170 °C, the Au and Te nanorods were best connected, and we hypothesize that the junctions were established primarily due to the atomic mobility of gold. Electrical characterization of these Au/Te/Au assemblies revealed some nonlinear current−voltage curves, as well as linear plots that are explained. This annealing method and the metal− semiconductor nanomaterials that are formed simply through controlled seeding and annealing on DNA origami templates have potential to yield complex nanoelectronic devices in the future.

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“…The synthesis of NWs requires the assistance of metal precursors. The metals that have were used are gold [ 20 ], silver (Ag) [ 21 , 22 , 23 , 24 , 25 , 26 , 27 ], and copper [ 28 ]. However, Ag is more widely used because of its high electrical and thermal conductivities, which are 6.3 10 7 S m −1 and 429 W m −1 K −1 , respectively [ 29 , 30 , 31 , 32 , 33 ].…”

Section: Introductionmentioning

confidence: 99%

The Quenching and Sonication Effect on the Mechanical Strength of Silver Nanowires Synthesized Using the Polyol Method

et al. 2021

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This study aims to determine the effect of fast cooling (quenching) on thermal properties, mechanical strength, morphology and size of the AgNWs. The synthesis of AgNWs was carried out at three different quenching-medium temperatures as follows: at 27 °C (ambient temperature), 0 °C (on ice), and −80 °C (in dry ice) using the polyol method at 130 °C. Furthermore, the AgNWs were sonified for 45 min to determine their mechanical strength. Scanning electron microscopy analysis showed that the quenched AgNWs had decreased significantly; at 27 °C, the AgNWs experienced a change in length from (40 ± 10) to (21 ± 6) µm, at 0 °C from (37 ± 8) to (24 ± 8) µm, and at −80 °C from (34 ± 9) to (29 ± 1) µm. The opposite occurred for their diameter with an increased quenching temperature: at 27 °C from (200 ± 10) to (210 ± 10) nm, at 0 °C from (224 ± 4) to (239 ± 8) nm, and at −80 °C from (253 ± 6) to (270 ± 10) nm. The lower the temperature of the quenching medium, the shorter the length and the higher the mechanical strength of AgNWs. The UV-Vis spectra of the AgNWs showed peak absorbances at 350 and 411 to 425 nm. Thermogravimetric analysis showed that AgNWs quenched at −80 °C have better thermal stability as their mass loss was only 2.88%, while at the quenching temperatures of 27 °C and 0 °C the mass loss was of 8.73% and 4.17%, respectively. The resulting AgNWs will then be applied to manufacture transparent conductive electrodes (TCEs) for optoelectronic applications.

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Seeding, Plating and Electrical Characterization of Gold Nanowires Formed on Self-Assembled DNA Nanotubes

Cited by 7 publications

References 43 publications

Bottom-Up Fabrication of DNA-Templated Electronic Nanomaterials and Their Characterization

Bottom-Up Fabrication of DNA-Templated Electronic Nanomaterials and Their Characterization

Annealing of Polymer-Encased Nanorods on DNA Origami Forming Metal–Semiconductor Nanowires: Implications for Nanoelectronics

The Quenching and Sonication Effect on the Mechanical Strength of Silver Nanowires Synthesized Using the Polyol Method

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