Remote Electronic Control of DNA-Based Reactions and Nanostructure Assembly
2018
The use of synthetic DNA to design and build molecular machines and well-defined structures at the nanoscale has greatly impacted the field of nanotechnology. Here we expand the current toolkit in this field by demonstrating an efficient, quantitative, and versatile approach that allows us to remotely control DNA-based reactions and DNA nanostructure self-assembly using electronic inputs. To do so we have deposited onto the surface of disposable chips different DNA input strands that upon the application of a cathodic potential can be desorbed in a remote and controlled way and trigger DNA-based reactions and DNA nanostructure self-assembly. We demonstrate that this effect is specific and versatile and allows the orthogonal control of multiple reactions and multiple structures in the same solution. Moreover, the strategy is highly tunable and can be finely modulated by varying the cathodic potential, the period of applied potential, and the density of the DNA strand on the chip surface. Our approach thus ...
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