Electric-field induced bistability in single-molecule conductance measurements for boron coordinated curcuminoid compounds

Chemical Science
Ignacio José Olavarria-ContrerasHerre S J van der Zant

Abstract

We have studied the single-molecule conductance of a family of curcuminoid molecules (CCMs) using the mechanically controlled break junction (MCBJ) technique. The CCMs under study contain methylthio (MeS-) as anchoring groups: MeS-CCM (1), the free-ligand organic molecule, and two coordination compounds, MeS-CCM-BF2 (2) and MeS-CCM-Cu (3), where ligand 1 coordinates to a boron center (BF2 group) and to a CuII moiety, respectively. We found that the three molecules present stable molecular junctions allowing detailed statistical analysis of their electronic properties. Compound 3 shows a slight increase in the conductance with respect to free ligand 1, whereas incorporation of BF2 (compound 2) promotes the presence of two conductance states in the measurements. Additional experiments with control molecules point out that this bistability is related to the combination of MeS- anchoring groups and the BF2 moiety within the structure of the molecules. Theoretical calculations show that this can be explained by the presence of two conformers once compound 2 is anchored between the gold electrodes. An energy minimum is found for a flat structure but there is a dramatic change in the magnitude and orientation of dipole moment (favouri...Continue Reading

References

Dec 1, 1993·Bioorganic & Medicinal Chemistry·Z SuiP R Ortiz de Montellano
Aug 6, 2005·European Journal of Cancer : Official Journal for European Organization for Research and Treatment of Cancer (EORTC) [and] European Association for Cancer Research (EACR)·R A SharmaW P Steward
Oct 13, 2006·Nano Letters·M Teresa GonzalezMichel Calame
Apr 8, 2009·Nature Nanotechnology·Su Ying QuekLatha Venkataraman
Apr 28, 2009·Physical Review Letters·M KamenetskaL Venkataraman
Dec 23, 2009·Nano Letters·Artem MishchenkoThomas Wandlowski
Jun 11, 2010·Nanotechnology·Christian A MartinHerre S J van der Zant
Sep 16, 2010·Inorganic Chemistry·Núria Aliaga-AlcaldeJan Reedijk
Nov 1, 2009·Nature Chemistry·Ismael Díez-PérezNongjian Tao
Mar 27, 2012·Nature Nanotechnology·Constant M GuédonSense Jan van der Molen
May 16, 2012·ACS Nano·Emanuel LörtscherHeike Riel
Sep 13, 2012·Sensors·Makusu Tsutsui, Masateru Taniguchi
Jun 6, 2013·Nature Nanotechnology·Mark Ratner
Jul 16, 2013·Nature Nanotechnology·Stefan WagnerHeiko B Weber
May 17, 2014·Journal of the American Chemical Society·Julia PonceEugenio Coronado
Sep 27, 2014·Advanced Materials·Nadav AmdurskyDavid Cahen
Feb 24, 2015·Nature Chemistry·Timothy A SuColin Nuckolls
Mar 4, 2015·Nature Communications·David Zsolt ManriqueColin J Lambert
May 13, 2015·Chemical Society Reviews·Simon WanningerFrank T Edelmann
Sep 17, 2015·Journal of the American Chemical Society·Timothy A SuColin Nuckolls
Oct 2, 2015·Beilstein Journal of Nanotechnology·Riccardo FrisendaHerre S J van der Zant
Dec 15, 2015·Organic & Biomolecular Chemistry·Eunsun KimAnthony D'Aléo
May 18, 2016·Nano Letters·Brian CapozziLatha Venkataraman
Jul 28, 2016·Chemistry : a European Journal·Alvaro Etcheverry-BerríosMonica Soler
May 26, 2017·Topics in Current Chemistry·Lu WangDong Xiang
Oct 6, 2017·Journal of the American Chemical Society·Yaping ZangLatha Venkataraman
Apr 1, 2016·Chemical Science·Raúl Díaz-TorresNúria Aliaga-Alcalde

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Citations

Jan 17, 2020·Chemistry : a European Journal·Manon CatherinFrédéric Fages
Feb 5, 2021·Physical Chemistry Chemical Physics : PCCP·Kílian Jutglar LozanoStefan T Bromley
Nov 26, 2019·Journal of the American Chemical Society·Jérôme RobertAthanassios K Boudalis

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Methods Mentioned

BETA
chip
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Software Mentioned

MCBJ

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