doi:10.1039/c8nr10464fengHerrer, LGonzalez-Orive, AMarques-Gonzalez, SMartin, SNichols, R.JSerrano, J.LLow, P.JCea, P.Electrically transmissive alkyne-anchored monolayers on goldART-2019-112225Well-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 1.2019http://zaguan.unizar.es/record/14798510.1039/c8nr10464fhttp://zaguan.unizar.es/record/147985oai:zaguan.unizar.es:147985info:eu-repo/grantAgreement/ES/DGA/E31-17Rinfo:eu-repo/grantAgreement/ES/DGA/E47-17Rinfo:eu-repo/grantAgreement/EC/FP7/607602/EU/Hierarchical Self Assembly of Polymeric Soft Systems/SASSYPOLinfo:eu-repo/grantAgreement/ES/MINECO-FEDER/MAT2016-78257-RNanoscale 11, 16 (2019), 7976-7985All rights reservedhttp://www.europeana.eu/rights/rr-f/info:eu-repo/semantics/openAccess