147985 20250110163828.0 doi 10.1039/c8nr10464f sideral 112225 ART-2019-112225 eng Herrer, L Universidad de Zaragoza (orcid)0000-0002-3576-5156 Electrically transmissive alkyne-anchored monolayers on gold 2019 Well-ordered, tightly-packed (surface coverage 0.97 x 10(-9) mol cm(-2)) monolayer films of 1, 4-bis((4-ethynylphenyl)ethynyl)benzene (1) on gold are prepared via a simple self-assembly process, taking advantage of the ready formation of alkynyl C-Au sigma-bonds. Electrochemical measurements using [Ru(NH3)(6)](3+), [Fe(CN)(6)](3-), and ferrocenylmethanol [Fe((5)-C5H4CH2OH)((5)-C5H5)] redox probes indicate that the alkynyl C-Au contacted monolayer of 1 presents a relatively low barrier for electron transfer. This contrasts with monolayer films on gold of other oligo(phenylene ethynylene) derivatives of comparable length and surface coverage, but with different contacting groups. Additionally, a low voltage transition (V-trans = 0.51 V) from direct tunneling (rectangular barrier) to field emission (triangular barrier) is observed. This low transition voltage points to a low tunneling barrier, which is consistent with the facile electron transport observed through the C-Au contacted self-assembled monolayer of 1. Access copy available to the general public Unrestricted info:eu-repo/grantAgreement/ES/DGA/E31-17R info:eu-repo/grantAgreement/ES/DGA/E47-17R info:eu-repo/grantAgreement/EC/FP7/607602/EU/Hierarchical Self Assembly of Polymeric Soft Systems/SASSYPOL info:eu-repo/grantAgreement/ES/MINECO-FEDER/MAT2016-78257-R info:eu-repo/semantics/openAccess All rights reserved http://www.europeana.eu/rights/rr-f/ 6.895 2019 MATERIALS SCIENCE, MULTIDISCIPLINARY 50 / 314 = 0.159 2019 Q1 T1 NANOSCIENCE & NANOTECHNOLOGY 25 / 103 = 0.243 2019 Q1 T1 CHEMISTRY, MULTIDISCIPLINARY 28 / 176 = 0.159 2019 Q1 T1 PHYSICS, APPLIED 23 / 154 = 0.149 2019 Q1 T1 2.18 2019 Nanoscience and Nanotechnology 2019 Q1 Materials Science (miscellaneous) 2019 Q1 info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion Gonzalez-Orive, A Marques-Gonzalez, S Martin, S Universidad de Zaragoza (orcid)0000-0001-9193-3874 Nichols, R.J Serrano, J.L Universidad de Zaragoza (orcid)0000-0001-9866-6633 Low, P.J Cea, P. Universidad de Zaragoza (orcid)0000-0002-4729-9578 2013 765 Universidad de Zaragoza Dpto. Química Orgánica Área Química Orgánica 2012 755 Universidad de Zaragoza Dpto. Química Física Área Química Física 11, 16 (2019), 7976-7985 Nanoscale Nanoscale 2040-3364 1178166 http://zaguan.unizar.es/record/147985/files/texto_completo.pdf Postprint 1022701 http://zaguan.unizar.es/record/147985/files/texto_completo.jpg?subformat=icon icon Postprint oai:zaguan.unizar.es:147985 articulos driver 2025-01-10-14:24:30 ARTICLE