000118871 001__ 118871 000118871 005__ 20240319081027.0 000118871 0247_ $$2doi$$a10.1016/j.mtchem.2022.101067 000118871 0248_ $$2sideral$$a130271 000118871 037__ $$aART-2022-130271 000118871 041__ $$aeng 000118871 100__ $$0(orcid)0000-0001-6189-1642$$aEscorihuela, E.$$uUniversidad de Zaragoza 000118871 245__ $$aBuilding large-scale unimolecular scaffolding for electronic devices 000118871 260__ $$c2022 000118871 5060_ $$aAccess copy available to the general public$$fUnrestricted 000118871 5203_ $$aThe fabrication of a future generation of (opto)electronic devices based on molecular components and materials will require careful chemical design, coupled with assembly methods that permit precise spatial orientation and arrangement of the functional molecules within device structures. Although unimolecular electronics are already a laboratory reality, the variation in the arrangement of the molecule within a molecular junction from measurement to measurement is considerable. Consequently, controlling the precise geometry at the molecule–metal contacts is a long-standing and largely unresolved challenge. Here, a strategy to fabricate uniform unimolecular junctions distributed in a regular pattern is reported. A monolayer of zinc metalloporphyrins, peripherally functionalised by bulky dendrons, is used to provide a well-defined array of molecular binding sites with precise spatial distribution. The dendrons are then photochemically cross-linked to form a robust base-layer. Parallel, uniformly-spaced unimolecular structures are subsequently assembled on these binding sites through a layer-by-layer (LbL) strategy. This LbL strategy proceeds through coordination of an α,ω-amino functionalised oligo(phenylene)ethynylene (OPE) molecule to the zinc ions of the metalloporphyrin template base-layer. The structure is then extended through alternating self-assembled layers of (cross-linked) zinc porphyrin and OPE. The coordination interaction between the zinc(II) sites and the bifunctional OPE wire ensures a high degree of registry between the layers and good electrical contact through the extended arrays and offer fine control over the chemical composition. 000118871 536__ $$9info:eu-repo/grantAgreement/ES/DGA/E31-20R$$9info:eu-repo/grantAgreement/ES/DGA/E47-20R$$9info:eu-repo/grantAgreement/ES/MICINN-FEDER/PGC2018-097583-B-I00$$9info:eu-repo/grantAgreement/ES/MICINN/PID2019-105881RB-I00$$9info:eu-repo/grantAgreement/ES/UZ-IBERCAJA-CAI/CB7-21 000118871 540__ $$9info:eu-repo/semantics/openAccess$$aby-nc-nd$$uhttp://creativecommons.org/licenses/by-nc-nd/3.0/es/ 000118871 590__ $$a7.3$$b2022 000118871 592__ $$a1.229$$b2022 000118871 591__ $$aCHEMISTRY, MULTIDISCIPLINARY$$b40 / 178 = 0.225$$c2022$$dQ1$$eT1 000118871 591__ $$aMATERIALS SCIENCE, MULTIDISCIPLINARY$$b76 / 343 = 0.222$$c2022$$dQ1$$eT1 000118871 593__ $$aBiomaterials$$c2022$$dQ1 000118871 593__ $$aCatalysis$$c2022$$dQ1 000118871 593__ $$aPolymers and Plastics$$c2022$$dQ1 000118871 593__ $$aElectronic, Optical and Magnetic Materials$$c2022$$dQ1 000118871 593__ $$aMaterials Chemistry$$c2022$$dQ1 000118871 593__ $$aColloid and Surface Chemistry$$c2022$$dQ1 000118871 594__ $$a7.6$$b2022 000118871 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion 000118871 700__ $$0(orcid)0000-0002-8932-9085$$aConcellón, A.$$uUniversidad de Zaragoza 000118871 700__ $$aMarín, I.$$uUniversidad de Zaragoza 000118871 700__ $$aKumar, V.J. 000118871 700__ $$0(orcid)0000-0002-3576-5156$$aHerrer, L. 000118871 700__ $$aMoggach, S.A. 000118871 700__ $$aVezzoli, A. 000118871 700__ $$aNichols, R.J. 000118871 700__ $$aLow, P.J. 000118871 700__ $$0(orcid)0000-0002-4729-9578$$aCea, P.$$uUniversidad de Zaragoza 000118871 700__ $$0(orcid)0000-0001-9866-6633$$aSerrano, J.L.$$uUniversidad de Zaragoza 000118871 700__ $$0(orcid)0000-0001-9193-3874$$aMartín, S.$$uUniversidad de Zaragoza 000118871 7102_ $$12013$$2765$$aUniversidad de Zaragoza$$bDpto. Química Orgánica$$cÁrea Química Orgánica 000118871 7102_ $$12012$$2755$$aUniversidad de Zaragoza$$bDpto. Química Física$$cÁrea Química Física 000118871 773__ $$g26 (2022), 101067 [8 pp.]$$tMaterials Today Chemistry$$x2468-5194 000118871 8564_ $$s1711495$$uhttps://zaguan.unizar.es/record/118871/files/texto_completo.pdf$$yVersión publicada 000118871 8564_ $$s2723265$$uhttps://zaguan.unizar.es/record/118871/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada 000118871 909CO $$ooai:zaguan.unizar.es:118871$$particulos$$pdriver 000118871 951__ $$a2024-03-18-16:49:54 000118871 980__ $$aARTICLE