Chemical and electrochemical routes to DNA-templated rhodium nanowires

Abstract

Both electroless and electrochemical routes to the deposition of rhodium at duplex DNA ‘template’ molecules provide <20 nm 1D electrically conductive metal wires.

Rh/DNA Nanoparticles, Synthesis, Characterization and Catalytic Activity in “On Water” Asymmetric Hydroformylation Reaction

“…A new DNA‐based asymmetric Diels‐Alder,,, Friedel‐Crafts, or other C–C bond forming reactions, yielding desired products with 99% or 93% ee, have been performed by utilizing a DNA‐copper catalyst. DNA was also used to stabilize metal nanoparticles such as Rh,, Pt,, Fe, Au,,, Ag,, Pd,, or Re ,…”

Nanosheets and 2D-nanonetworks by mutually assisted self-assembly of fullerene clusters and DNA three-way junctions

“…21 This could decrease the cost of synthesis and tedious periodic assembly of long multiple DNA components. 22 On the other hand, DNA has been used as a scaffold or template in the bottom-up assembly of metal ions, [23][24][25] small molecules, 26 oligomers, 27,28 polymers, 29,30 and nanoparticles, 31,32 into various nanostructures. Moreover, the long range ordered assembly of short DNA strands into one dimensional (1D) nanobers/nanowires was reported using various design strategies such as DNA templated assembly, 33,34 complementary hydrogen bonding, 35 DNA condensation 36,37 and p-chromophore assisted self-assembly.…”

DNA Binding Peptide Directed Synthesis of Continuous DNA Nanowires for Analysis of Large DNA Molecules by Scanning Electron Microscope

“…DNA metallization is a promising method for this purpose because it not only introduces heavy metals into DNA but also increases its diameter in a controlled manner. DNA metallization has been reported with various metals, such as Pd, Pt, Au, Cu, Ag, Te, and Rh . However, in most studies, the synthesized DNA nanowires have been used for construction of micro/nanoscale electronic devices rather than DNA analysis .…”

“…In these studies, DNA nanowires were mainly synthesized by attracting positively charged metal ions to natural DNA backbones or bases and reducing them in situ to form seeds, then finally growing them to produce metallized DNA nanowires by reduction of the additional metal ions . Although most DNA nanowires were reported to have conductive properties, their morphologies were irregular with many unexpected branches . We consider these significant differences in the morphology of metalized DNA from the original molecule may be a critical obstacle in using DNA nanowires for DNA analysis.…”

“…For this purpose, metallic nanowires grown from DNA templates would be a promising candidate to visualize DNA structure. There have been a number of studies reporting DNA nanowire formation using various metals . These approaches generally consist of two steps: introducing metallic seeds into the DNA molecule and growing the seeds to full metallization.…”