Autonomous control of interfacial electron transfer and the activation of DNA machines by an oscillatory pH system

Xiu Juan Qi; Chun Hua Lu; Xiaoqing Liu; Simcha Shimron; Huang Hao Yang; Itamar Willner

doi:10.1021/nl402873y

Autonomous control of interfacial electron transfer and the activation of DNA machines by an oscillatory pH system

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

^*Corresponding author for this work

Institute of Chemistry

Research output: Contribution to journal › Article › peer-review

53 Scopus citations

Abstract

An oscillatory pH system is implemented to drive oscillatory pH-switchable DNA machines and to control pH-stimulated electron transfer at electrode surfaces. 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.

Original language	English
Pages (from-to)	4920-4924
Number of pages	5
Journal	Nano Letters
Volume	13
Issue number	10
DOIs	https://doi.org/10.1021/nl402873y
State	Published - 9 Oct 2013

Keywords

electrode
i-Motif
impedance
monolayer
tweezers

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abstract = "An oscillatory pH system is implemented to drive oscillatory pH-switchable DNA machines and to control pH-stimulated electron transfer at electrode surfaces. 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.",

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AU - Yang, Huang Hao

AU - Willner, Itamar

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KW - impedance

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Autonomous control of interfacial electron transfer and the activation of DNA machines by an oscillatory pH system

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Keywords

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