Conductance measurement of pyridyl-based single molecule junctions with Cu and Au contacts

Conductance measurement of pyridyl-based single molecule junctions with Cu and Au contacts

We studied the conductance of pyridyl-based single molecule junctions with Cu contacts by using an electrochemical jump-to-contact scanning tunneling microscopy break junction (ECSTM-BJ) approach. The single molecule junctions of 4,4′-bipyridine (BPY), 1,2-di(pyridin-4-yl)ethene (BPY-EE) and 1,2-di(...

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Veröffentlicht in:Nanotechnology 2013-11, Vol.24 (46), p.465204-465204
Hauptverfasser: Zhou, Xiao-Yi, Peng, Zheng-Lian, Sun, Yan-Yan, Wang, Li-Na, Niu, Zhen-Jiang, Zhou, Xiao-Shun
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Applied sciences
Electronics
Exact sciences and technology
Molecular electronics, nanoelectronics
Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices
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container_end_page 465204
container_issue 46
container_start_page 465204
container_title Nanotechnology
container_volume 24
creator Zhou, Xiao-Yi
Peng, Zheng-Lian
Sun, Yan-Yan
Wang, Li-Na
Niu, Zhen-Jiang
Zhou, Xiao-Shun
description We studied the conductance of pyridyl-based single molecule junctions with Cu contacts by using an electrochemical jump-to-contact scanning tunneling microscopy break junction (ECSTM-BJ) approach. The single molecule junctions of 4,4′-bipyridine (BPY), 1,2-di(pyridin-4-yl)ethene (BPY-EE) and 1,2-di(pyridin-4-yl)ethane (BPY-EA) bridged with Cu clusters show three sets of conductance values. These values are smaller than the conductance values of single molecule junctions with Au electrodes measured by the traditional scanning tunneling microscopy break junction in acidic or neutral solutions, which can be attributed to the different electronic coupling efficiencies between molecules and electrodes. The consistent conductance of pyridyl-based molecules in acidic and neutral solutions may show that the protonated pyridyl group contacts to the electrode through the deprotonated form.
doi_str_mv 10.1088/0957-4484/24/46/465204
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Solid state devices</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Zhou, Xiao-Yi</creatorcontrib><creatorcontrib>Peng, Zheng-Lian</creatorcontrib><creatorcontrib>Sun, Yan-Yan</creatorcontrib><creatorcontrib>Wang, Li-Na</creatorcontrib><creatorcontrib>Niu, Zhen-Jiang</creatorcontrib><creatorcontrib>Zhou, Xiao-Shun</creatorcontrib><collection>Pascal-Francis</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>Nanotechnology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Zhou, Xiao-Yi</au><au>Peng, Zheng-Lian</au><au>Sun, Yan-Yan</au><au>Wang, Li-Na</au><au>Niu, Zhen-Jiang</au><au>Zhou, Xiao-Shun</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Conductance measurement of pyridyl-based single molecule junctions with Cu and Au contacts</atitle><jtitle>Nanotechnology</jtitle><stitle>Nano</stitle><addtitle>Nanotechnology</addtitle><date>2013-11-22</date><risdate>2013</risdate><volume>24</volume><issue>46</issue><spage>465204</spage><epage>465204</epage><pages>465204-465204</pages><issn>0957-4484</issn><eissn>1361-6528</eissn><coden>NNOTER</coden><abstract>We studied the conductance of pyridyl-based single molecule junctions with Cu contacts by using an electrochemical jump-to-contact scanning tunneling microscopy break junction (ECSTM-BJ) approach. 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Exact sciences and technology
Molecular electronics, nanoelectronics
Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices
title Conductance measurement of pyridyl-based single molecule junctions with Cu and Au contacts
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