{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,13]],"date-time":"2026-10-13T20:45:12Z","timestamp":1791924312649,"version":"4.3.4"},"reference-count":47,"publisher":"American Chemical Society (ACS)","issue":"40","license":[{"start":{"date-parts":[[2026,9,28]],"date-time":"2026-09-28T00:00:00Z","timestamp":1790553600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001665","name":"Agence Nationale de la Recherche","doi-asserted-by":"publisher","award":["ANR-10-LABX-0096"],"award-info":[{"award-number":["ANR-10-LABX-0096"]}],"id":[{"id":"10.13039\/501100001665","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001665","name":"Agence Nationale de la Recherche","doi-asserted-by":"publisher","award":["ANR-15-CE09 0001-01"],"award-info":[{"award-number":["ANR-15-CE09 0001-01"]}],"id":[{"id":"10.13039\/501100001665","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001665","name":"Agence Nationale de la Recherche","doi-asserted-by":"publisher","award":["ANR-18-IDEX-0001"],"award-info":[{"award-number":["ANR-18-IDEX-0001"]}],"id":[{"id":"10.13039\/501100001665","id-type":"DOI","asserted-by":"publisher"}]},{"name":"R?gion ?le-de-France"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2026,10,13]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>Counterions are ubiquitous in charged molecular films, yet their influence on charge transport in solid-state molecular junctions (MJs) remains insufficiently understood. Here, we investigate how embedded counterions regulate conductance in MJs based on ultrathin molecular films (2\u20139 nm) of 4,4\u2032-Diamino-2,2\u2032-stilbenedisulfonic acid (DAS). These DAS films were electrochemically grafted onto Au electrodes via in situ generated diazonium precursors. During film growth, cations from the supporting electrolyte are incorporated into the molecular network through electrostatic interactions with the sulfonate groups. The dense structure of the electro-grafted films enables direct deposition of Ti\/Au top contacts, yielding robust large-area junctions with well-defined thicknesses. By varying the incorporated counterions (H+, Li+, Na+, or K+), we show that junction conductance is strongly counterion dependent, whereas the transport attenuation factor remains nearly unchanged. This behavior indicates that counterions primarily affect the prefactor J0, consistent with a counterion-dependent change in interfacial coupling. Na+- and K+-containing films favor a large population of strongly coupled sulfonate-metal pathways, leading to markedly higher conductance than H+- and Li+-containing MJs. These results identify embedded ionic species as active chemical regulators of molecule-electrode coupling and provide a practical strategy for tuning charge transport in molecular electronic devices.<\/jats:p>","DOI":"10.1021\/acsomega.6c08118","type":"journal-article","created":{"date-parts":[[2026,9,28]],"date-time":"2026-09-28T09:01:38Z","timestamp":1790586098000},"page":"61984-61991","source":"Crossref","is-referenced-by-count":0,"title":["Counterion-Dependent\nCharge Transport in Ultrathin-Film\nMolecular Junctions"],"prefix":"10.1021","volume":"11","author":[{"given":"Rui","family":"Li","sequence":"first","affiliation":[{"name":"Universite\u0301 Paris Cite\u0301, CNRS ITODYS , ,","place":["Paris, France, F-75006"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Philippe","family":"Decorse","sequence":"additional","affiliation":[{"name":"Universite\u0301 Paris Cite\u0301, CNRS ITODYS , ,","place":["Paris, France, F-75006"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jean Christophe","family":"Lacroix","sequence":"additional","affiliation":[{"name":"Universite\u0301 Paris Cite\u0301, CNRS ITODYS , ,","place":["Paris, France, F-75006"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1010-8421","authenticated-orcid":true,"given":"Pascal","family":"Martin","sequence":"additional","affiliation":[{"name":"Universite\u0301 Paris Cite\u0301, CNRS ITODYS , ,","place":["Paris, France, F-75006"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"316","published-online":{"date-parts":[[2026,9,28]]},"reference":[{"issue":"23","key":"2026101315065032900_cit1","doi-asserted-by":"publisher","first-page":"4477","DOI":"10.1021\/cm049517q","article-title":"Molecular\nElectronic Junctions","volume":"16","author":"McCreery","year":"2004","journal-title":"Chem. 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Application to the Protection of Iron\nagainst Corrosion","volume":"17","author":"Combellas","year":"2005","journal-title":"Chem. Mater."},{"issue":"20","key":"2026101315065032900_cit35","doi-asserted-by":"publisher","first-page":"4811","DOI":"10.1021\/jp027223r","article-title":"Stability\nof Substituted Phenyl Groups Electrochemically\nGrafted at Carbon Electrode Surface","volume":"107","author":"D\u2019Amours","year":"2003","journal-title":"J. Phys.\nChem. B"},{"issue":"18","key":"2026101315065032900_cit36","doi-asserted-by":"publisher","first-page":"4570","DOI":"10.1021\/cm0700551","article-title":"Surface Modification of Conducting\nSubstrates. Existence\nof Azo Bonds in the Structure of Organic Layers Obtained from Diazonium\nSalts","volume":"19","author":"Doppelt","year":"2007","journal-title":"Chem. 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