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Phosphonic acid\/phosphonate derivatized ruthenium(II) polypyridyl complexes are shown to be capable of acting as ligands for a dinuclear cobalt complex as well as serving to anchor the ruthenium(II) polypyridyl species on metal oxide substrates. The relative surface concentrations of the species can be controlled via the protonation state of the phosphonic acid functional groups. This strategy enables the formation of complex molecular architectures by the formation of coordinate covalent bonds to join synthetically accessible components. The resulting functional assemblies on semiconductor substrates offer spatial control over the relative positions of electron transfer partners for photoinduced electron transfer reactivity. These assemblies have been investigated spectroscopically and electrochemically; their electron transfer dynamics following photoexcitation have been investigated by optical transient absorption spectroscopy, and their activity as photoanodes has been investigated.<\/jats:p>","DOI":"10.1002\/chem.71477","type":"journal-article","created":{"date-parts":[[2026,7,25]],"date-time":"2026-07-25T14:43:16Z","timestamp":1784990596000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Assembly of Molecular Chromophore\u2013Catalyst Assemblies on Metal Oxide Semiconductors by Metal\u2013Ligand Coordination Chemistry"],"prefix":"10.1002","volume":"32","author":[{"given":"Giang T.","family":"Ly","sequence":"first","affiliation":[{"name":"Department of Chemistry and Environmental Science New Jersey Institute of Technology Newark New Jersey USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Annie","family":"Shen","sequence":"additional","affiliation":[{"name":"Department of Chemistry and Environmental Science New Jersey Institute of Technology Newark New Jersey USA"},{"name":"Department of Chemistry Bryn Mawr College Bryn Mawr Pennsylvania USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Benjamin J.","family":"Cripe","sequence":"additional","affiliation":[{"name":"Department of Chemistry and Environmental Science New Jersey Institute of Technology Newark New Jersey USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6261-5727","authenticated-orcid":false,"given":"Michael S.","family":"Eberhart","sequence":"additional","affiliation":[{"name":"Department of Chemistry and Environmental Science New Jersey Institute of Technology Newark New Jersey USA"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2026,7,25]]},"reference":[{"key":"e_1_2_8_2_1","doi-asserted-by":"publisher","DOI":"10.1021\/ja3084362"},{"key":"e_1_2_8_3_1","doi-asserted-by":"publisher","DOI":"10.1039\/D2SC06966K"},{"key":"e_1_2_8_4_1","doi-asserted-by":"publisher","DOI":"10.1021\/jacs.8b03453"},{"key":"e_1_2_8_5_1","doi-asserted-by":"publisher","DOI":"10.1021\/acs.jpcc.5b01442"},{"key":"e_1_2_8_6_1","doi-asserted-by":"publisher","DOI":"10.1039\/C8CS00897C"},{"key":"e_1_2_8_7_1","doi-asserted-by":"publisher","DOI":"10.1039\/D0CS01336F"},{"key":"e_1_2_8_8_1","doi-asserted-by":"publisher","DOI":"10.1021\/acs.chemrev.5b00229"},{"key":"e_1_2_8_9_1","doi-asserted-by":"publisher","DOI":"10.1039\/D3SC03780K"},{"key":"e_1_2_8_10_1","doi-asserted-by":"publisher","DOI":"10.1002\/anie.201305951"},{"key":"e_1_2_8_11_1","doi-asserted-by":"publisher","DOI":"10.1021\/ic5011488"},{"key":"e_1_2_8_12_1","doi-asserted-by":"publisher","DOI":"10.1021\/acsenergylett.6b00661"},{"key":"e_1_2_8_13_1","doi-asserted-by":"publisher","DOI":"10.1073\/pnas.1506111112"},{"key":"e_1_2_8_14_1","doi-asserted-by":"publisher","DOI":"10.1021\/ic990466m"},{"key":"e_1_2_8_15_1","doi-asserted-by":"publisher","DOI":"10.1002\/anie.200901279"},{"key":"e_1_2_8_16_1","doi-asserted-by":"publisher","DOI":"10.1021\/ja809108y"},{"key":"e_1_2_8_17_1","doi-asserted-by":"publisher","DOI":"10.1038\/nchem.2536"},{"key":"e_1_2_8_18_1","doi-asserted-by":"publisher","DOI":"10.1021\/j100320a040"},{"key":"e_1_2_8_19_1","doi-asserted-by":"publisher","DOI":"10.1021\/ja00210a062"},{"key":"e_1_2_8_20_1","doi-asserted-by":"publisher","DOI":"10.1002\/anie.201206882"},{"key":"e_1_2_8_21_1","doi-asserted-by":"publisher","DOI":"10.1021\/acs.jpcc.6b11672"},{"key":"e_1_2_8_22_1","doi-asserted-by":"publisher","DOI":"10.1021\/acsami.7b11905"},{"key":"e_1_2_8_23_1","doi-asserted-by":"publisher","DOI":"10.1021\/jacs.7b07216"},{"key":"e_1_2_8_24_1","doi-asserted-by":"publisher","DOI":"10.1021\/jacs.6b10699"},{"key":"e_1_2_8_25_1","doi-asserted-by":"publisher","DOI":"10.1002\/anie.201410944"},{"key":"e_1_2_8_26_1","doi-asserted-by":"publisher","DOI":"10.1021\/acs.jpclett.5b01370"},{"key":"e_1_2_8_27_1","doi-asserted-by":"publisher","DOI":"10.1039\/c3cc45457f"},{"key":"e_1_2_8_28_1","doi-asserted-by":"publisher","DOI":"10.1039\/C8TA01304G"},{"key":"e_1_2_8_29_1","doi-asserted-by":"publisher","DOI":"10.1021\/jacs.6b00254"},{"key":"e_1_2_8_30_1","doi-asserted-by":"publisher","DOI":"10.1021\/ic50218a053"},{"key":"e_1_2_8_31_1","doi-asserted-by":"publisher","DOI":"10.1021\/ja9036127"},{"key":"e_1_2_8_32_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0020-1693(00)91701-8"},{"key":"e_1_2_8_33_1","doi-asserted-by":"publisher","DOI":"10.1071\/CH9702217c"},{"key":"e_1_2_8_34_1","first-page":"2225","article-title":"Complexes of Binucleating Ligands. 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