Autonomous Control of Interfacial Electron Transfer and the Activation of DNA Machines by an Oscillatory pH System

作者：Qi, Xiu-Juan; Lu, Chun-Hua; Liu, Xiaoqing; Shimron, Simcha; Yang, Huang-Hao; Willner, Itamar^*

来源：Nano Letters, 2013, 13(10): 4920-4924.

DOI：10.1021/nl402873y

• i-Motif
• tweezers
• monolayer
• impedance
• electrode

An oscillatory pH system is implemented to drive oscillatory pH-switchable DNA machine:: and to control pH-stimulated electron transfer at electrode surfraces, The oscillatory pH system drives the autonomous opening and closure of DNA tweezers and activates a DNA pendulum by the pH-stimulated formation and dissociation of i-motif structures. Also, a sequence-programmed nucleic acid monolayer-functionalized electrode undergoes autonomous oscillatory pH transitions between random coil and i-motif configurations, leading to the control of electron transfer at electrode surfaces.

• 出版日期2013-10
• 单位福州大学