2026-05-07T06:16:09Zhttps://riubu.ubu.es/oai/request

oai:riubu.ubu.es:10259/49392021-11-10T09:38:18Zcom_10259_3844com_10259_5086com_10259_2604col_10259_3845

Martínez Alonso, Marta 3d16abb7-f5d2-4ac6-8447-7ea80cfac961 500 Cerdá, Jesús . 81ad8c03-5eaf-4a0d-a130-a974bb6b4e06 500 Momblona, Cristina . 488e9025-4812-43a2-b3a3-db3ecb9493ad 500 Pertegás, Antonio . e20dbd07-d24d-4d72-ac5e-31ea3862fb17 500 Junquera Hernández, José M. . 54e1c787-dab8-4e91-9557-bbce60d60752 500 Heras, Aránzazu 273 500 Rodríguez, Ana M. . 64013be0-a1f8-4eba-8154-e6f7c49a9c55 500 Espino Ordóñez, Gustavo 162 500 Bolink, Henk . df479c6b-dd69-4889-a1d9-094d2cc69fff 500 Ortí, Enrique . ae054243-d1de-44f9-9c7f-d02346c90393 500 2018-09-12T11:40:07Z 2018-09-12T11:40:07Z 2017-09 0020-1669 http://hdl.handle.net/10259/4939 10.1021/acs.inorgchem.7b01167 A series of bis-cyclometalated iridium(III) complexes of general formula [Ir(ppy)2(N∧N)][PF6] (ppy− = 2-phenylpyridinate; N∧N = 2-(1H-imidazol-2-yl)pyridine (1), 2-(2-pyridyl)benzimidazole (2), 1-methyl-2-pyridin-2-yl- 1H-benzimidazole (3), 2-(4′-thiazolyl)benzimidazole (4), 1- methyl-2-(4′-thiazolyl)benzimidazole (5)) is reported, and their use as electroluminescent materials in light-emitting electrochemical cell (LEC) devices is investigated. [2][PF6] and [3][PF6] are orange emitters with intense unstructured emission around 590 nm in acetonitrile solution. [1][PF6], [4][PF6], and [5][PF6] are green weak emitters with structured emission bands peaking around 500 nm. The different photophysical properties are due to the effect that the chemical structure of the ancillary ligand has on the nature of the emitting triplet state. Whereas the benzimidazole unit stabilizes the LUMO and gives rise to a 3MLCT/3LLCT emitting triplet in [2][PF6] and [3][PF6], the presence of the thiazolyl ring produces the opposite effect in [4][PF6] and [5][PF6] and the emitting state has a predominant 3LC character. Complexes with 3MLCT/3LLCT emitting triplets give rise to LEC devices with luminance values 1 order higher than those of complexes with 3LC emitting states. Protecting the imidazole N−H bond with a methyl group, as in complexes [3][PF6] and [5][PF6], shows that the emissive properties become more stable. [3][PF6] leads to outstanding LECs with simultaneously high luminance (904 cd m−2), efficiency (9.15 cd A−1), and stability (lifetime over 2500 h). Spanish Ministry of Economy and Competitiveness (MINECO) of Spain (projects CTQ2014- 58812-C2-1-R, MAT2014-55200, CTQ2014-55583-R, CTQ2014-61914-EXP, CTQ2015-71955-REDT, CTQ2015- 70371-REDT, CTQ2015-71154-P, and Unidad de Excelencia Marıá de Maeztu MDM-2015-0538), European Feder funds (CTQ2015-71154-P), Obra Social “la Caixa” (OSLC-2012- 007), Junta de Castilla y León (BU033-U16), and Generalitat Valenciana (Prometeo2016/135) application/pdf eng American Chemical Society Inorganic Chemistry. 2017, V. 56, n. 17, p. 10298–10310 https://doi.org/10.1021/acs.inorgchem.7b01167 info:eu-repo/grantAgreement/MINECO/CTQ2014-58812-C2-1-R info:eu-repo/grantAgreement/MINECO/MAT2014-55200 info:eu-repo/grantAgreement/MINECO/CTQ2014-55583-R info:eu-repo/grantAgreement/MINECO/CTQ2014-61914-EXP info:eu-repo/grantAgreement/MINECO/CTQ2015-71955-REDT info:eu-repo/grantAgreement/MINECO/CTQ2015- 70371-REDT info:eu-repo/grantAgreement/MINECO/CTQ2015-71154-P info:eu-repo/grantAgreement/MICINN/MDM-2015-0538 info:eu-repo/grantAgreement/FEDER/CTQ2015-71154-P info:eu-repo/grantAgreement/FundaciónLaCaixa/OSLC-2012-007 info:eu-repo/grantAgreement/JCyL/BU033-U16 info:eu-repo/grantAgreement/GVA/Prometeo2016-135 Química analítica Chemistry, Analytic Highly stable and efficient light-emitting electrochemical cells based on cationic iridium complexes bearing arylazole ancillary ligands info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion info:eu-repo/semantics/openAccess THUMBNAIL InorgChem2017_.pdf.jpg InorgChem2017_.pdf.jpg IM Thumbnail image/jpeg 3970 https://riubu.ubu.es/bitstream/10259/4939/4/InorgChem2017_.pdf.jpg 1870a38bbcc1fac3093f575df48c1630 MD5 4 ORIGINAL InorgChem2017_.pdf InorgChem2017_.pdf application/pdf 964958 https://riubu.ubu.es/bitstream/10259/4939/1/InorgChem2017_.pdf 1185ab165a169b97d75f8c519e90e103 MD5 1 LICENSE license.txt license.txt text/plain; charset=utf-8 999 https://riubu.ubu.es/bitstream/10259/4939/2/license.txt b295bcbce42e2caabeb0c623d3860c06 MD5 2 TEXT InorgChem2017_.pdf.txt InorgChem2017_.pdf.txt Extracted text text/plain 78170 https://riubu.ubu.es/bitstream/10259/4939/3/InorgChem2017_.pdf.txt 33fb9c7fc48a782ae1c87e625c92f011 MD5 3 10259/4939 oai:riubu.ubu.es:10259/4939 2021-11-10 10:38:18.371 Repositorio Institucional de la Universidad de Burgos bubrep@ubu.es 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