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These luminescent complexes have been fully characterized through optical and electrochemical studies. In solution, the C4\u20136 series exhibits quantum yields (\u0424) twice as high as the C1\u20133 series, exceeding 60% in dichloromethane and where 3MLCT\/3LLCT and 3LC emissions participate in the phenomenon. These complexes were employed in the active layer of light-emitting electrochemical cells (LECs). Device performance of maximum luminance values of up to 21.7 Lx at 14.7 V were observed for the C2 complex and long lifetimes for the C1\u20133 series. These values are counterintuitive to the quantum yields observed in solution. Thus, we established that the rigidity of the system and the structure of the solid matrix dramatically affect the electronic properties of the complex. This research contributes to understanding the effects of the modifications in the ancillary and cyclometalating ligands, the photophysics of the complexes, and their performance in LEC devices.<\/jats:p>","DOI":"10.3390\/molecules29010053","type":"journal-article","created":{"date-parts":[[2023,12,21]],"date-time":"2023-12-21T03:36:17Z","timestamp":1703129777000},"page":"53","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":9,"title":["Synthesis and Characterization of Iridium(III) Complexes with Substituted Phenylimidazo(4,5-f)1,10-phenanthroline Ancillary Ligands and Their Application in LEC Devices"],"prefix":"10.3390","volume":"29","author":[{"given":"B\u00e1rbara","family":"V\u00e1squez","sequence":"first","affiliation":[{"name":"Departamento de Qu\u00edmica F\u00edsica, Facultad de Qu\u00edmica y de Farmacia, Pontifica Universidad Cat\u00f3lica de Chile, Av. Vicu\u00f1a Mackenna 4860, Macul 7820436, Chile"},{"name":"Departamento de Qu\u00edmica, Facultad de Ciencias Naturales, Matem\u00e1tica y del Medio Ambiente, Universidad Tecnol\u00f3gica Metropolitana, Las Palmeras 3360, \u00d1u\u00f1oa, Santiago 7800003, Chile"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Max","family":"Bayas","sequence":"additional","affiliation":[{"name":"Departamento de Qu\u00edmica Inorg\u00e1nica, Facultad de Qu\u00edmica y de Farmacia, Pontificia Universidad Cat\u00f3lica de Chile, Av. Vicu\u00f1a Mackenna 4860, Macul 7820436, Chile"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Paulina","family":"Dreyse","sequence":"additional","affiliation":[{"name":"Department of Chemistry, Faculty of Science, Universidad de Chile, Las Palmeras 3425, \u00d1u\u00f1oa, Santiago 7800003, Chile"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2068-174X","authenticated-orcid":false,"given":"Juan Luis","family":"Palma","sequence":"additional","affiliation":[{"name":"Engineering School, Universidad Central de Chile, Santa Isabel 1186, Santiago 8330601, Chile"},{"name":"Center for the Development of Nanoscience and Nanotechnology (CEDENNA), Santiago 9170124, Chile"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4620-6974","authenticated-orcid":false,"given":"Alan R.","family":"Cabrera","sequence":"additional","affiliation":[{"name":"Departamento de Qu\u00edmica Inorg\u00e1nica, Facultad de Qu\u00edmica y de Farmacia, Pontificia Universidad Cat\u00f3lica de Chile, Av. Vicu\u00f1a Mackenna 4860, Macul 7820436, Chile"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Elena","family":"Rossin","sequence":"additional","affiliation":[{"name":"Dipartimento di Scienze Chimiche, Farmaceutiche ed Agrarie, Universit\u00e0 degli Studi di Ferrara, Via L. Borsari 46, 44121 Ferrara, Italy"},{"name":"Dipartimento di Scienze Chimiche, Universit\u00e0 degli Studi di Padova, Via F. Marzolo 1, 35131 Padova, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6638-978X","authenticated-orcid":false,"given":"Mirco","family":"Natali","sequence":"additional","affiliation":[{"name":"Dipartimento di Scienze Chimiche, Farmaceutiche ed Agrarie, Universit\u00e0 degli Studi di Ferrara, Via L. Borsari 46, 44121 Ferrara, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6124-6205","authenticated-orcid":false,"given":"Cesar","family":"Saldias","sequence":"additional","affiliation":[{"name":"Departamento de Qu\u00edmica F\u00edsica, Facultad de Qu\u00edmica y de Farmacia, Pontifica Universidad Cat\u00f3lica de Chile, Av. Vicu\u00f1a Mackenna 4860, Macul 7820436, Chile"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5942-7696","authenticated-orcid":false,"given":"Iv\u00e1n","family":"Gonz\u00e1lez-Pavez","sequence":"additional","affiliation":[{"name":"Departamento de Qu\u00edmica, Facultad de Ciencias Naturales, Matem\u00e1tica y del Medio Ambiente, Universidad Tecnol\u00f3gica Metropolitana, Las Palmeras 3360, \u00d1u\u00f1oa, Santiago 7800003, Chile"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2023,12,21]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"49","DOI":"10.1016\/j.ccr.2017.09.011","article-title":"Sustainable Metal Complexes for Organic Light-Emitting Diodes (OLEDs)","volume":"373","author":"Bizzarri","year":"2018","journal-title":"Coord. Chem. 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