000147986 001__ 147986
000147986 005__ 20250110163828.0
000147986 0247_ $$2doi$$a10.1039/c9nr05662a
000147986 0248_ $$2sideral$$a114002
000147986 037__ $$aART-2019-114002
000147986 041__ $$aeng
000147986 100__ $$0(orcid)0000-0002-3576-5156$$aHerrer, L.$$uUniversidad de Zaragoza
000147986 245__ $$aSingle molecule vs. large area design of molecular electronic devices incorporating an efficient 2-aminepyridine double anchoring group
000147986 260__ $$c2019
000147986 5060_ $$aAccess copy available to the general public$$fUnrestricted
000147986 5203_ $$aWhen a molecule is bound to external electrodes by terminal anchor groups, the latter are of paramount importance in determining the electrical conductance of the resulting molecular junction. Here we explore the electrical properties of a molecule with bidentate anchor groups, namely 4, 4'-(1, 4-phenylenebis(ethyne-2, 1-diyl))bis(pyridin-2-amine), in both large area devices and at the single molecule level. We find an electrical conductance of 0.6 × 10-4G0 and 1.2 × 10-4G0 for the monolayer and for the single molecule, respectively. These values are approximately one order of magnitude higher than those reported for monodentate materials having the same molecular skeleton. A combination of theory and experiments is employed to understand the conductance of monolayer and single molecule electrical junctions featuring this new multidentate anchor group. Our results demonstrate that the molecule has a tilt angle of 30° with respect to the normal to the surface in the monolayer, while the break-off length in the single molecule junction occurs for molecules having a tilt angle estimated as 40°, which would account for the difference in their conductance values per molecule. The bidentate 2-aminepyridine anchor is of general interest as a contact group, since this terminal functionalized aromatic ring favours binding of the adsorbate to the metal contact resulting in enhanced conductance values. © 2019 The Royal Society of Chemistry.
000147986 536__ $$9info:eu-repo/grantAgreement/ES/DGA/E31-17R$$9info:eu-repo/grantAgreement/ES/DGA/E47-17R$$9info:eu-repo/grantAgreement/EC/FP7/607602/EU/Hierarchical Self Assembly of Polymeric Soft Systems/SASSYPOL$$9info:eu-repo/grantAgreement/EC/H2020/767187/EU/Quantum Interference Enhanced Thermoelectricity/QuIET$$9This project has received funding from the European Union’s Horizon 2020 research and innovation program under grant agreement No H2020 767187-QuIET$$9info:eu-repo/grantAgreement/ES/MINECO/CTQ2015-70174-P$$9info:eu-repo/grantAgreement/ES/MINECO/MAT2016-78257-R$$9info:eu-repo/grantAgreement/ES/MINECO/PGC2018-097583-B-I00
000147986 540__ $$9info:eu-repo/semantics/openAccess$$aby$$uhttp://creativecommons.org/licenses/by/3.0/es/
000147986 590__ $$a6.895$$b2019
000147986 591__ $$aMATERIALS SCIENCE, MULTIDISCIPLINARY$$b50 / 314 = 0.159$$c2019$$dQ1$$eT1
000147986 591__ $$aNANOSCIENCE & NANOTECHNOLOGY$$b25 / 103 = 0.243$$c2019$$dQ1$$eT1
000147986 591__ $$aCHEMISTRY, MULTIDISCIPLINARY$$b28 / 176 = 0.159$$c2019$$dQ1$$eT1
000147986 591__ $$aPHYSICS, APPLIED$$b23 / 154 = 0.149$$c2019$$dQ1$$eT1
000147986 592__ $$a2.18$$b2019
000147986 593__ $$aNanoscience and Nanotechnology$$c2019$$dQ1
000147986 593__ $$aMaterials Science (miscellaneous)$$c2019$$dQ1
000147986 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000147986 700__ $$aIsmae, l A.
000147986 700__ $$0(orcid)0000-0001-9193-3874$$aMartín, S.$$uUniversidad de Zaragoza
000147986 700__ $$aMilan, D.C.
000147986 700__ $$0(orcid)0000-0001-9866-6633$$aSerrano, J.L.$$uUniversidad de Zaragoza
000147986 700__ $$aNichols, R.J.
000147986 700__ $$aLambert, C.
000147986 700__ $$0(orcid)0000-0002-4729-9578$$aCea, P.$$uUniversidad de Zaragoza
000147986 7102_ $$12013$$2765$$aUniversidad de Zaragoza$$bDpto. Química Orgánica$$cÁrea Química Orgánica
000147986 7102_ $$12012$$2755$$aUniversidad de Zaragoza$$bDpto. Química Física$$cÁrea Química Física
000147986 773__ $$g11, 34 (2019), 15871-15880$$pNanoscale$$tNanoscale$$x2040-3364
000147986 8564_ $$s1730939$$uhttps://zaguan.unizar.es/record/147986/files/texto_completo.pdf$$yVersión publicada
000147986 8564_ $$s2783100$$uhttps://zaguan.unizar.es/record/147986/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000147986 909CO $$ooai:zaguan.unizar.es:147986$$particulos$$pdriver
000147986 951__ $$a2025-01-10-14:24:32
000147986 980__ $$aARTICLE