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The metal complexes of the ligand containing carbazolide and pyridyl ligating groups possess high photoluminescence quantum yields (up to 65% in solution) and emission properties consistent with thermally\u2010activated delayed fluorescence (TADF). Bimetallic Cu(I) complexes of similar ligands containing benzannulated donor (benzo[a]carbazolide) or acceptor (isoquinoline) moieties demonstrate that absorption\/emission properties are tunable by modification of D\/A groups. Single\u2010crystal x\u2010ray diffraction of the bimetallic complexes reveals metal\u2013metal distances shorter than the sum of their van der Waals radii, suggesting metallophilic interactions between the d\n                    <jats:sup>10<\/jats:sup>\n                    metal centers. Ultrafast excited\u2010state kinetic analysis reveals nearly equal exergonic intersystem crossing rates between Cu(I) and Au(I) complexes, contrary to what is expected from each metal's spin\u2013orbit coupling contributions. These findings are corroborated with theoretical modeling, which suggests that the optical transitions of these bimetallic complexes are characterized as metal\u2013ligand\u2010to\u2010ligand charge transfer (MLLCT) states.\n                  <\/jats:p>","DOI":"10.1002\/anie.2267892","type":"journal-article","created":{"date-parts":[[2026,10,17]],"date-time":"2026-10-17T16:10:42Z","timestamp":1792253442000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Bimetallic Coinage Metal Complexes of Tetradentate\n                    <i>ortho<\/i>\n                    \u2010Ter\u2010arylene Ligands"],"prefix":"10.1002","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-5267-4865","authenticated-orcid":false,"given":"Darius A.","family":"Shariaty","sequence":"first","affiliation":[{"name":"Department of Chemistry University of Southern California  Los Angeles California USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7077-3437","authenticated-orcid":false,"given":"Thabassum A.","family":"Nattikallungal","sequence":"additional","affiliation":[{"name":"Department of Chemistry University of Southern California  Los Angeles California USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1566-2173","authenticated-orcid":false,"given":"Yi\u2010Jyun","family":"Lien","sequence":"additional","affiliation":[{"name":"Department of Chemistry University of Southern California  Los Angeles California USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6716-389X","authenticated-orcid":false,"given":"Peter I.","family":"Djurovich","sequence":"additional","affiliation":[{"name":"Department of Chemistry University of Southern California  Los Angeles California USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6164-3347","authenticated-orcid":false,"given":"Stephen E.","family":"Bradforth","sequence":"additional","affiliation":[{"name":"Department of Chemistry University of Southern California  Los Angeles California USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7764-4096","authenticated-orcid":false,"given":"Mark E.","family":"Thompson","sequence":"additional","affiliation":[{"name":"Department of Chemistry University of Southern California  Los Angeles California USA"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2026,10,17]]},"reference":[{"key":"e_1_2_9_2_1","doi-asserted-by":"publisher","DOI":"10.1002\/anie.198710981"},{"key":"e_1_2_9_3_1","doi-asserted-by":"crossref","first-page":"397","DOI":"10.1002\/9783527673353.ch11","volume-title":"Molecular Metal\u2010Metal Bonds","author":"Gray T. 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