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Abstract
Dong Jun Lee †, Eunji Kim †, Daesan Kim †, Juhun Park ‡, and Seunghun Hong †‡*
† Department of Biophysics and Chemical Biology, Seoul National University, Seoul, 151-747, Korea
‡ Department of Physics and Astronomy, Seoul National University, Seoul 151-747, Korea
*Address correspondence to Seunghun Hong
Abstract
We report the development of “nano-storage wires” (NSWs), which can store chemical species and release them at a desired moment via external electrical stimuli. Here, using the electrodeposition process through an anodized aluminum oxide template, we fabricated multisegmented nanowires composed of a polypyrrole segment containing adenosine triphosphate (ATP) molecules, a ferromagnetic nickel segment, and a conductive gold segment. Upon the application of a negative bias voltage, the NSWs released ATP molecules for the control of motor protein activities. Furthermore, NSWs can be printed onto various substrates including flexible or three-dimensional structured substrates by direct writing or magnetic manipulation strategies to build versatile chemical storage devices. Since our strategy provides a means to store and release chemical species in a controlled manner, it should open up various applications such as drug delivery systems and biochips for the controlled release of chemicals.
Keywords: nanowire; polypyrrole; controlled release; printable; bioenergy storage; nano-bio interface
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