Robust Organic Radical Molecular Junctions Using Acetylene Terminated Groups for C-Au Bond Formation.
Organic paramagnetic and electroactive molecules are attracting interest as core components of molecular electronic and spintronic devices. Currently, further progress is hindered by the modest stability and reproducibility of the molecule/electrode contact. We report the synthesis of a persistent o...
| Published in: | Journal of the American Chemical Society Vol. 140; no. 5; pp. 1691 - 1697 |
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| Main Authors: | , , , , , , , , , , , |
| Format: | Article |
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American Chemical Society
2/7/2018
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| Subjects: | |
| Online Access: | View this record in EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=hlh&AN=127956221&site=ehost-live header: @attributes: shortDbName: hlh uiTerm: 127956221 longDbName: Humanities International Complete uiTag: AN controlInfo: bkinfo: jinfo: jid: 00027863 ACS jtl: Journal of the American Chemical Society issn: 00027863 maglogo: N pubinfo: dt: 2/7/2018 vid: 140 iid: 5 pid: 997 pub: American Chemical Society artinfo: ui: 127956221 10.1021/jacs.7b10019 ppf: 1691 ppct: 6 formats: tig: atl: Robust Organic Radical Molecular Junctions Using Acetylene Terminated Groups for C-Au Bond Formation. aug: au: Bejarano, Francesc Olavarria-Contreras, Ignacio Jose Droghetti, Andrea Rungger, Ivan Rudnev, Alexander Gutiérrez, Diego Mas-Torrent, Marta Veciana, Jaume van der Zant, Herre S. J. Rovira, Concepció Burzurı, Enrique Crivillers, Núria affil: Department of Molecular Nanoscience and Organic Materials, Institut de Cie�ncia de Materials de Barcelona (ICMAB-CSIC) and CIBER-BBN, Campus de la Universitat Auto�noma de Barcelona (UAB), 08193 Bellaterra, Spain Kavli Institute of Nanoscience, Delft University of Technology, Lorentzweg 1, Delft 2628 CJ, The Netherlands Nano-Bio Spectroscopy Group and European Theoretical Spectroscopy Facility (ETSF), Universidad del País Vasco (UPV/EHU), Avenida Tolosa 72, 20018 San Sebastian, Spain National Physical Laboratory, Teddington TW11 0LW, United Kingdom Department of Chemistry and Biochemistry, University of Bern, Freiestrasse 3, 3012 Bern, Switzerland Russian Academy of Sciences A. N. Frumkin Institute of Physical Chemistry and Electrochemistry RAS, Leninskii pr. 31, Moscow, 119991, Russia IMDEA Nanoscience, Ciudad Universitaria de Cantoblanco, c/Faraday 9, 28049 Madrid, Spain su: Acetylene Alkynes Spintronics Covalent bonds Density functional theory sug: subj: Acetylene Alkynes Spintronics Covalent bonds Density functional theory ab: Organic paramagnetic and electroactive molecules are attracting interest as core components of molecular electronic and spintronic devices. Currently, further progress is hindered by the modest stability and reproducibility of the molecule/electrode contact. We report the synthesis of a persistent organic radical bearing one and two terminal alkyne groups to form Au-C s bonds. The formation and stability of self-assembled monolayers and the electron transport through single-molecule junctions at room temperature have been studied. The combined analysis of both systems demonstrates that this linker forms a robust covalent bond with gold and a better-defined contact when compared to traditional sulfur-based linkers. Density functional theory and quantum transport calculations support the experimental observation highlighting a reduced variability of conductance values for the C-Au based junction. Our findings advance the quest for robustness and reproducibility of devices based on electroactive molecules. pubtype: Academic Journal doctype: Article src: R language: English refInfo: copyright: @attributes: flag: Y dt: @attributes: year: 2018 holdings: @attributes: islocal: N |
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