Mechanically-gated electrochemical ionic channels with chemically modified vertically aligned gold nanowires

Summary: Mechanically-gated ion channels play an important role in the human body, whereas it is challenging to design artificial mechanically-controlled ionic transport devices as the intrinsically rigidity of traditional electrodes. Here, we report on a mechanically-gated electrochemical channel b...

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Autores principales:	Qingfeng Zhai, Ren Wang, Quanxia Lyu, Yiyi Liu, Lim Wei Yap, Shu Gong, Wenlong Cheng
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Electrochemical materials science Materials science Devices Science Q
Acceso en línea:	https://doaj.org/article/abcca68a3040412ea73f837a5a65c040
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spelling	oai:doaj.org-article:abcca68a3040412ea73f837a5a65c0402021-11-20T05:09:43ZMechanically-gated electrochemical ionic channels with chemically modified vertically aligned gold nanowires2589-004210.1016/j.isci.2021.103307https://doaj.org/article/abcca68a3040412ea73f837a5a65c0402021-11-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S2589004221012761https://doaj.org/toc/2589-0042Summary: Mechanically-gated ion channels play an important role in the human body, whereas it is challenging to design artificial mechanically-controlled ionic transport devices as the intrinsically rigidity of traditional electrodes. Here, we report on a mechanically-gated electrochemical channel by virtue of vertically aligned gold nanowires (v-AuNWs) as 3D stretchable electrodes. By surface modification with a self-assembled 1-Dodecanethiol monolayer, the v-AuNWs become hydrophobic and inaccessible to hydrated redox species (e.g., Fe(CN)63−/4− and Ru(bpy)32+). Under mechanical strains, the closely-packed v-AuNWs unzip/crack to generate ionic channels to enable redox reactions, giving rise to increases in Faradaic currents. The redox current increases with the strain level until it reaches a certain threshold value, and then decreases as the strain-induced conductivity decreases. The good reversible “on-off” behaviors for multiple cycles were also demonstrated. The results presented demonstrate a new strategy to control redox reactions simply by tensile strain, indicating the potential applications in future soft smart mechanotransduction devices.Qingfeng ZhaiRen WangQuanxia LyuYiyi LiuLim Wei YapShu GongWenlong ChengElsevierarticleElectrochemical materials scienceMaterials scienceDevicesScienceQENiScience, Vol 24, Iss 11, Pp 103307- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Electrochemical materials science Materials science Devices Science Q
spellingShingle	Electrochemical materials science Materials science Devices Science Q Qingfeng Zhai Ren Wang Quanxia Lyu Yiyi Liu Lim Wei Yap Shu Gong Wenlong Cheng Mechanically-gated electrochemical ionic channels with chemically modified vertically aligned gold nanowires
description	Summary: Mechanically-gated ion channels play an important role in the human body, whereas it is challenging to design artificial mechanically-controlled ionic transport devices as the intrinsically rigidity of traditional electrodes. Here, we report on a mechanically-gated electrochemical channel by virtue of vertically aligned gold nanowires (v-AuNWs) as 3D stretchable electrodes. By surface modification with a self-assembled 1-Dodecanethiol monolayer, the v-AuNWs become hydrophobic and inaccessible to hydrated redox species (e.g., Fe(CN)63−/4− and Ru(bpy)32+). Under mechanical strains, the closely-packed v-AuNWs unzip/crack to generate ionic channels to enable redox reactions, giving rise to increases in Faradaic currents. The redox current increases with the strain level until it reaches a certain threshold value, and then decreases as the strain-induced conductivity decreases. The good reversible “on-off” behaviors for multiple cycles were also demonstrated. The results presented demonstrate a new strategy to control redox reactions simply by tensile strain, indicating the potential applications in future soft smart mechanotransduction devices.
format	article
author	Qingfeng Zhai Ren Wang Quanxia Lyu Yiyi Liu Lim Wei Yap Shu Gong Wenlong Cheng
author_facet	Qingfeng Zhai Ren Wang Quanxia Lyu Yiyi Liu Lim Wei Yap Shu Gong Wenlong Cheng
author_sort	Qingfeng Zhai
title	Mechanically-gated electrochemical ionic channels with chemically modified vertically aligned gold nanowires
title_short	Mechanically-gated electrochemical ionic channels with chemically modified vertically aligned gold nanowires
title_full	Mechanically-gated electrochemical ionic channels with chemically modified vertically aligned gold nanowires
title_fullStr	Mechanically-gated electrochemical ionic channels with chemically modified vertically aligned gold nanowires
title_full_unstemmed	Mechanically-gated electrochemical ionic channels with chemically modified vertically aligned gold nanowires
title_sort	mechanically-gated electrochemical ionic channels with chemically modified vertically aligned gold nanowires
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/abcca68a3040412ea73f837a5a65c040
work_keys_str_mv	AT qingfengzhai mechanicallygatedelectrochemicalionicchannelswithchemicallymodifiedverticallyalignedgoldnanowires AT renwang mechanicallygatedelectrochemicalionicchannelswithchemicallymodifiedverticallyalignedgoldnanowires AT quanxialyu mechanicallygatedelectrochemicalionicchannelswithchemicallymodifiedverticallyalignedgoldnanowires AT yiyiliu mechanicallygatedelectrochemicalionicchannelswithchemicallymodifiedverticallyalignedgoldnanowires AT limweiyap mechanicallygatedelectrochemicalionicchannelswithchemicallymodifiedverticallyalignedgoldnanowires AT shugong mechanicallygatedelectrochemicalionicchannelswithchemicallymodifiedverticallyalignedgoldnanowires AT wenlongcheng mechanicallygatedelectrochemicalionicchannelswithchemicallymodifiedverticallyalignedgoldnanowires
_version_	1718419560539881472

Mechanically-gated electrochemical ionic channels with chemically modified vertically aligned gold nanowires

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