Switchable DNA wire: deposition-stripping of copper nanoclusters as an “ON-OFF” nanoswitch

• DOI: 10.1038/srep19515
• Publication Date: 2016-01-19T10:12:12Z
• Authors: Xiaoli Zhu; Siyu Liu; Jiepei Cao; Xiaoxia Mao; Genxi Li
• Keywords: Stripping (fiber); Nanoclusters; Deposition

Abstract Today, a consensus that DNA working as molecular wire shows promise in nanoscale electronics is reached. Considering the “ON-OFF” switch basis of logic circuit, DNA-mediated charge transport (DNA CT) should be conquered. Here, on chemical or electrochemical deposition and stripping DNA-templated copper nanoclusters (CuNCs), we develop an nanoswitch for CT. While CuNCs are deposited, CT blocked, which can also recovered after CuNCs. A cycle completed few seconds repeated many times. Moreover, by regulating amount reagents, deposition/stripping time, applied potential, etc., adjustable to make at either state intermediate state. We believe this concept successful implementation will promote practical application one step further.