000149855 001__ 149855
000149855 005__ 20250128160610.0
000149855 0247_ $$2doi$$a10.1039/d0tc05658h
000149855 0248_ $$2sideral$$a124330
000149855 037__ $$aART-2021-124330
000149855 041__ $$aeng
000149855 100__ $$0(orcid)0000-0002-3576-5156$$aHerrer, L.$$uUniversidad de Zaragoza
000149855 245__ $$apH control of conductance in a pyrazolyl Langmuir-Blodgett monolayer
000149855 260__ $$c2021
000149855 5060_ $$aAccess copy available to the general public$$fUnrestricted
000149855 5203_ $$aIn this contribution, pyrazole is identified as an excellent anchoring group capable of forming well-ordered Langmuir-Blodgett (LB) monolayers onto gold substrates. In contrast, the formation of self-assembled (SA) monolayers is prevented due to the extraction of gold atoms from the surface upon the incubation process required for the formation of these films. The electronic coupling strength of pyrazole-gold junctions is explored through evaluation of the electrical properties of LB films incorporating a double pyrazole terminated molecular wire, namely 1, 4-bis(1H-pyrazol-4-ylethynyl)benzene, 1; these electrical properties are compared with those of molecules having a similar chemical structure, geometry and length. The conductance value for LB films of1is high when the monolayer is transferred from a Langmuir film prepared onto a basic subphase, 1.19 × 10-4G0, as it is more than four times larger than the conductance of the same compound incorporated on a LB film prepared from a water subphase, 0.27 × 10-4G0. These results are interpreted in terms of the deprotonation of the pyrazole group in a basic media that leads to the formation of the pyrazolate (deprotonated pyrazole) moiety. This results in a more efficient electronic coupling with the gold tip of the scanning tunnelling microscope used for film characterization.
000149855 536__ $$9info:eu-repo/grantAgreement/ES/DGA/E31-20R$$9info:eu-repo/grantAgreement/ES/DGA/LMP33-18$$9info:eu-repo/grantAgreement/ES/MICINN/MAT2016-78257-R$$9info:eu-repo/grantAgreement/ES/MICINN/PID2019-105881RB-I00
000149855 540__ $$9info:eu-repo/semantics/openAccess$$aAll rights reserved$$uhttp://www.europeana.eu/rights/rr-f/
000149855 590__ $$a8.067$$b2021
000149855 591__ $$aPHYSICS, APPLIED$$b24 / 161 = 0.149$$c2021$$dQ1$$eT1
000149855 591__ $$aMATERIALS SCIENCE, MULTIDISCIPLINARY$$b71 / 344 = 0.206$$c2021$$dQ1$$eT1
000149855 592__ $$a1.608$$b2021
000149855 593__ $$aMaterials Chemistry$$c2021$$dQ1
000149855 593__ $$aChemistry (miscellaneous)$$c2021$$dQ1
000149855 594__ $$a11.8$$b2021
000149855 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/acceptedVersion
000149855 700__ $$0(orcid)0000-0001-9193-3874$$aMartín, S.$$uUniversidad de Zaragoza
000149855 700__ $$aGonzález-Orive, A.
000149855 700__ $$aMilan, D.C.
000149855 700__ $$aVezzoli, A.
000149855 700__ $$aNichols, R.J.
000149855 700__ $$0(orcid)0000-0001-9866-6633$$aSerrano, J.L.$$uUniversidad de Zaragoza
000149855 700__ $$0(orcid)0000-0002-4729-9578$$aCea, P.$$uUniversidad de Zaragoza
000149855 7102_ $$12013$$2765$$aUniversidad de Zaragoza$$bDpto. Química Orgánica$$cÁrea Química Orgánica
000149855 7102_ $$12012$$2755$$aUniversidad de Zaragoza$$bDpto. Química Física$$cÁrea Química Física
000149855 773__ $$g9, 8 (2021), 2882-2889$$pJ. mater. chem. C$$tJOURNAL OF MATERIALS CHEMISTRY C$$x2050-7526
000149855 8564_ $$s562316$$uhttps://zaguan.unizar.es/record/149855/files/texto_completo.pdf$$yPostprint
000149855 8564_ $$s643217$$uhttps://zaguan.unizar.es/record/149855/files/texto_completo.jpg?subformat=icon$$xicon$$yPostprint
000149855 909CO $$ooai:zaguan.unizar.es:149855$$particulos$$pdriver
000149855 951__ $$a2025-01-28-14:57:21
000149855 980__ $$aARTICLE