DNA-Templated Construction of Copper Nanowires

Monson, Christopher F.; Woolley, Adam T.

doi:10.1021/nl034016+

Cited by 450 publications

(306 citation statements)

References 16 publications

Supporting

Mentioning

292

Contrasting

Unclassified

Order By: Relevance

“…We have used the demonstrated affinity between silver and cytosine bases on ssDNA (18,(22)(23)(24)(25)(26)(27) to create near-IR-emitting Ag nanoclusters with excellent single-molecule and bulk optical properties. While we have separately reported the visible emitters in bulk studies (18,20), the preferentially created Ϸ700-nm emitter reported here offers strong emission in a less-obscured spectral window and shows excellent single-molecule emission.…”

Section: Resultsmentioning

confidence: 99%

Strongly emissive individual DNA-encapsulated Ag nanoclusters as single-molecule fluorophores

Vosch

Antoku

Hsiang

et al. 2007

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

442

444

View full text Add to dashboard Cite

The water-soluble, near-IR-emitting DNA-encapsulated silver nanocluster presented herein exhibits extremely bright and photostable emission on the single-molecule and bulk levels. The photophysics have been elucidated by intensity-dependent correlation analysis and suggest a heavy atom effect of silver that rapidly depopulates an excited dark level before quenching by oxygen, thereby conferring great photostability, very high singlemolecule emission rates, and essentially no blinking on experimentally relevant time scales (0.1 to >1,000 ms). Strong antibunching is observed from these biocompatible species, which emit >10 9 photons before photobleaching. The significant dark-state quantum yield even enables bunching from the emissive state to be observed as a dip in the autocorrelation curve with only a single detector as the dark state precludes emission from the emissive level. These species represent significant improvements over existing dyes, and the nonpower law blinking kinetics suggest that these very small species may be alternatives to much larger and strongly intermittent semiconductor quantum dots.correlation ͉ photophysics ͉ silver nanoclusters ͉ single-molecule spectroscopy ͉ fluorescence intermittency W hile myriad dyes exist with varying photophysical properties (1, 2), organic dye-based single-molecule and even bulk in vivo imaging dynamics studies suffer from low probe brightness, poor photostability (3), and oxygen sensitivity (4). Advances in nanotechnology such as the use of quantum dots (5, 6) have ameliorated some of these issues but at the cost of toxicity (7), broad excitation (8, 9), power-law blinking (10-12), and large probe size (13,14). While quantum dots are readily excited with low-intensity sources, their fluorescence exhibits intermittency on all time scales (10-12), thereby causing problems when used for tracking or imaging studies. Arising from Auger processes (15), these photophysical dynamics are apparent at all excitation intensities and appear without characteristic times. While functionalization, large size (Ϸ10-20 nm in diameter), and cellular uptake are potential problems, the strong nonmolecular power-law fluorescence intermittency is a major drawback of these materials as single-molecule reporters (10-12). Recently, Ϸ35-nm-sized fluorescent nanodiamonds have also been reported as single-molecule emitters, but these also raise concerns about label size (16). Consequently, for both in vitro and in vivo single-molecule studies, fluorophores with high emission rates and excellent photostability must be identified that are completely devoid of blinking on all relevant time scales, while maintaining small overall sizes.By combining the virtues of chemistry and nanotechnology, we have developed few-atom, molecular-scale noble metal nanoclusters as a class of emitters that simultaneously exhibit bright, highly polarizable discrete transitions, good photostability, and small size, all within biocompatible scaffolds (17-20). Recent observations that DNA encapsulates Ag nanoclust...

show abstract

Section: Resultsmentioning

confidence: 99%

Strongly emissive individual DNA-encapsulated Ag nanoclusters as single-molecule fluorophores

Vosch

Antoku

Hsiang

et al. 2007

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

442

444

View full text Add to dashboard Cite

show abstract

“…M-DNA is such a new form imino proton of the DNA base pairs is replaced by a [30] showed that nanoscale gold wires can be built on DNA lattice. Monson and Woolley (2003) [31] stated an experiment to construct copper nanowire using DNA template. Park, Yan, Reif, LaBean, and Finkelstein (2004) also described an ideal electro-less deposition method to metallize double strand DNA in Silver(Ag) solution to form silver nanowire using the self-assembled DNA scaffold template.…”

Section: Dna For Conducting Nanowire and Nanotubes As Circuit Elementsmentioning

confidence: 99%

Encoding Information in DNA: From Basic Structure to Nanoelectronics

Hoque¹,

Rajaee²

2017

AJN

View full text Add to dashboard Cite

DNA (Deoxyribonucleic Acid) computing is a recent computing technique which is also referred as bio molecular computing or molecular computing. DNA computing is a new avenue for solving the computational problem manipulating the distinct nanoscopic molecule and nowadays the approaches of DNA computing are being employed to resolve combinatorial problems utilizing the advantages of parallelism and high-density storage characteristics of DNA. Besides DNA is considered as the most feasible substance to shape the most nanoscopic materials, manufacture distinct nanomechanical devices and formulating large-scale nanostructures due to its expedient structural features and molecular recognition properties. A concise discussion regarding the splendid advances in constructing nanoelectronics employing DNA computing paradigm and challenges of DNA computing is focused in this paper.

show abstract

“…Thus, by controlling the size, period and arrangement of the PDMS wells as well as the moving direction of the meniscus, we can further create more complex DNA templates. Thus, in a broader sense, this methodology could also be very useful for microelectronics as by metalizing these robust 1D nanostructures or by functionalizing them with nanoparticles (Braun et al, 1998;Keren et al, 2002;Deng & Mao, 2003;Monson & Woolley, 2003;Nguyen et al, 2008;Köhler et al, 2001), one is able to generate very appealing conducting wires and complex networks over a large area and at low cost.…”

Section: Second Strategy: Use Of Topographical Structuresmentioning

confidence: 99%