Syntheses and characterization of Schiff base ligands and their Ir(III) complexes as coating for phosphor-converted LEDs

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual Paulista (Unesp)-
Autor(es): dc.creatorCanisares, Felipe S.M. [UNESP]-
Autor(es): dc.creatorBispo-Jr, Airton G. [UNESP]-
Autor(es): dc.creatorPires, Ana M. [UNESP]-
Autor(es): dc.creatorLima, Sergio A.M. [UNESP]-
Data de aceite: dc.date.accessioned2022-02-22T00:26:39Z-
Data de disponibilização: dc.date.available2022-02-22T00:26:39Z-
Data de envio: dc.date.issued2020-12-11-
Data de envio: dc.date.issued2020-12-11-
Data de envio: dc.date.issued2020-10-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/j.ijleo.2020.164995-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/199169-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/199169-
Descrição: dc.descriptionIr(III) complexes find several applications in light conversion molecular devices (LCMD) such as in solid-state lighting (SSL). Although, a couple of blue or green-emitting Ir(III) complexes are found so far, there is a lack of near-UV-to-red downshifting converter Ir(III) complexes to be used as coatings of near-UV-excited white-light-emitting diodes (WLEDs). Thus, in this study, we introduce the syntheses of two ligands named as 2-(((3-methyl-1-phenyl-1H-pyrazol-5-yl)imino)methyl)phenol (BS1) and 5-(diethylamino)-2-(((3-methyl-1-phenyl-1H-pyrazol-5-yl)imino)methyl)phenol (BS2) and their use to synthesize two new red-emitting iridium complexes, Ag[Ir(ppz)2(BS1)] and Ag[Ir(ppz)2(BS2)]. BS1 and BS2 structures were deeply investigated theoretically and experimentally, and they display emission in the yellow and green spectral region under UV excitation, respectively. Ag[Ir(ppz)2(BS1)] and Ag[Ir(ppz)2(BS2)] features emission characterized by a broadband centered with color coordinates of (0.659;0.337) and (0.612;0.380), respectively, both in the red spectral region, with 100 % of color purity. To demonstrate their application in SSL, BS1 and Ag[Ir(ppz)2(BS1)] were used to coat commercial near-UV-emitting LEDs (395 nm). The radiant stability of the prototypes overseen for 24 h attests that the emission intensity of the Ag[Ir(ppz)2(BS1)]-LED prototype decreases only 10 %, confirming that the complex matches with the desired photostability and qualifying this complex to be used as coatings of near-UV excited white-light-emitting diodes.-
Descrição: dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)-
Descrição: dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
Descrição: dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)-
Descrição: dc.descriptionSão Paulo State University (Unesp) School of Technology and Sciences-
Descrição: dc.descriptionSão Paulo State University (Unesp) Institute of Chemistry-
Descrição: dc.descriptionSão Paulo State University (Unesp) Institute of Biosciences Humanities and Exact Sciences, São José Do Rio Preto-
Descrição: dc.descriptionSão Paulo State University (Unesp) School of Technology and Sciences-
Descrição: dc.descriptionSão Paulo State University (Unesp) Institute of Chemistry-
Descrição: dc.descriptionSão Paulo State University (Unesp) Institute of Biosciences Humanities and Exact Sciences, São José Do Rio Preto-
Descrição: dc.descriptionFAPESP: 2012/13876-9-
Descrição: dc.descriptionFAPESP: 2015/03400-5-
Descrição: dc.descriptionFAPESP: 2015/10394-1-
Descrição: dc.descriptionFAPESP: 2016/20421-9-
Descrição: dc.descriptionCAPES: 88887.341772/2019-00-
Idioma: dc.languageen-
Relação: dc.relationOptik-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectDownshifting converter-
Palavras-chave: dc.subjectIridium(III)-
Palavras-chave: dc.subjectLight conversion molecular devices (LCMD)-
Palavras-chave: dc.subjectPhotoluminescence-
Palavras-chave: dc.subjectRed emitter-
Palavras-chave: dc.subjectSolid-state lighting (SSL)-
Palavras-chave: dc.subjectUV-LED-
Palavras-chave: dc.subjectWLEDs-
Título: dc.titleSyntheses and characterization of Schiff base ligands and their Ir(III) complexes as coating for phosphor-converted LEDs-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

Não existem arquivos associados a este item.