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Infinite coordination frameworks constructed from these motifs could inherit their unique electron delocalization and spectroscopic properties, allowing to systematically explore their correlation in the solid\u2010state. However, controlling the crystallization of Ru\u2010based frameworks continues to present a major hurdle. Herein, four nitrogen\u2010based heterocyclic ligands of different lengths were used to construct a series of metal\u2013organic frameworks (MOFs) with the general formula [Ru(L)\n                    <jats:sub>2<\/jats:sub>\n                    Cl\n                    <jats:sub>2<\/jats:sub>\n                    ], L = pyrazine (pz), 2,6\u2010naphthyridine (naph), 4,4\u2032\u2010bipyridine (bipy), and 1,4\u2010di(4\u2010pyridyl)\u2010benzene (bpbn). Structural analysis revealed two\u2010dimensional square grid connectivity with the ligand length governing layer packing and interpenetration. The existence of electronic delocalization through the framework backbones was confirmed using electrochemical and spectroscopic techniques. Mixed\u2010valent states of Ru\u2010MOFs were generated by controlled chemical oxidation using tris(4\u2010bromophenyl)ammoniumyl hexachloroantimonate. The resultant samples featured intervalence charge transfer (IVCT) bands, which were dependent on the oxidation state and were accompanied by 4\u2010orders\u2010of\u2010magnitude enhancement of conductivity. The mixed\u2010valent states of Ru\u2010naph and Ru\u2010bipy exhibited the highest conductivities, reaching 2.35 \u00d7 10\n                    <jats:sup>\u22125<\/jats:sup>\n                    and 5.91 \u00d7 10\n                    <jats:sup>\u22126<\/jats:sup>\n                    S\/cm, respectively. Interrogation of these frameworks offered valuable insights into the interplay between the IVCT transitions and the electronic conductivity.\n                  <\/jats:p>","DOI":"10.1002\/smll.74630","type":"journal-article","created":{"date-parts":[[2026,7,25]],"date-time":"2026-07-25T00:37:30Z","timestamp":1784939850000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Interplay Between Oxidation State, Intervalence Charge Transfer Transitions and Electronic Conductivity in a Series of Ru\u2010Based Metal\u2013Organic Frameworks"],"prefix":"10.1002","author":[{"given":"Wang","family":"Zhang","sequence":"first","affiliation":[{"name":"Department of Chemistry School of Science Institute of Science Tokyo  Meguro\u2010ku Tokyo Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chunyu","family":"Luo","sequence":"additional","affiliation":[{"name":"Department of Chemistry School of Science Institute 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