Electrochemical Whittling of Organic Nanostructures

Yi Zhang; Khalid Salaita; Jung Hyurk Lim; Chad A. Mirkin

doi:10.1021/nl0202298

Electrochemical Whittling of Organic Nanostructures

Yi Zhang, Khalid Salaita, Jung Hyurk Lim, Chad A. Mirkin^*

^*Corresponding author for this work

Robert H. Lurie Comprehensive Cancer Center

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

35 Scopus citations

Abstract

A strategy for reducing the feature size of organic structures on metal surfaces is presented. The approach works by the electrochemical desorption of the peripheries of organic nanostructures (SAMs of 16-mercaptohexadecanoic acid (MHA)) generated by dip-pen nanolithography. By holding the potential of a gold substrate at -750 mV vs Ag/AgCI for designated periods of time in 0.5 M aqueous KOH solution, the size of the MHA nanostructures on the substrate could be reduced in a controlled fashion. It is proposed that the free volume surrounding the nanostructures and the greater ion accessibility to edge sites facilitate this process. Structures as small as 30 nm could be generated on polycrystalline gold substrates.

Original language	English (US)
Pages (from-to)	1389-1392
Number of pages	4
Journal	Nano letters
Volume	2
Issue number	12
DOIs	https://doi.org/10.1021/nl0202298
State	Published - Dec 2002

ASJC Scopus subject areas

Bioengineering
General Chemistry
General Materials Science
Condensed Matter Physics
Mechanical Engineering

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10.1021/nl0202298

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title = "Electrochemical Whittling of Organic Nanostructures",

abstract = "A strategy for reducing the feature size of organic structures on metal surfaces is presented. The approach works by the electrochemical desorption of the peripheries of organic nanostructures (SAMs of 16-mercaptohexadecanoic acid (MHA)) generated by dip-pen nanolithography. By holding the potential of a gold substrate at -750 mV vs Ag/AgCI for designated periods of time in 0.5 M aqueous KOH solution, the size of the MHA nanostructures on the substrate could be reduced in a controlled fashion. It is proposed that the free volume surrounding the nanostructures and the greater ion accessibility to edge sites facilitate this process. Structures as small as 30 nm could be generated on polycrystalline gold substrates.",

author = "Yi Zhang and Khalid Salaita and Lim, {Jung Hyurk} and Mirkin, {Chad A.}",

year = "2002",

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AU - Zhang, Yi

AU - Salaita, Khalid

AU - Lim, Jung Hyurk

AU - Mirkin, Chad A.

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Y1 - 2002/12

N2 - A strategy for reducing the feature size of organic structures on metal surfaces is presented. The approach works by the electrochemical desorption of the peripheries of organic nanostructures (SAMs of 16-mercaptohexadecanoic acid (MHA)) generated by dip-pen nanolithography. By holding the potential of a gold substrate at -750 mV vs Ag/AgCI for designated periods of time in 0.5 M aqueous KOH solution, the size of the MHA nanostructures on the substrate could be reduced in a controlled fashion. It is proposed that the free volume surrounding the nanostructures and the greater ion accessibility to edge sites facilitate this process. Structures as small as 30 nm could be generated on polycrystalline gold substrates.

AB - A strategy for reducing the feature size of organic structures on metal surfaces is presented. The approach works by the electrochemical desorption of the peripheries of organic nanostructures (SAMs of 16-mercaptohexadecanoic acid (MHA)) generated by dip-pen nanolithography. By holding the potential of a gold substrate at -750 mV vs Ag/AgCI for designated periods of time in 0.5 M aqueous KOH solution, the size of the MHA nanostructures on the substrate could be reduced in a controlled fashion. It is proposed that the free volume surrounding the nanostructures and the greater ion accessibility to edge sites facilitate this process. Structures as small as 30 nm could be generated on polycrystalline gold substrates.

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Electrochemical Whittling of Organic Nanostructures

Abstract

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