Effect of Substituents at Imide Positions on the Laser Performance of 1,7-Bay-Substituted Perylenediimide Dyes
| Autor: | Džiugas Litvinas, Ángela Sastre-Santos, Fernando Fenández-Lázaro, José A. Quintana, Saulius Juršėnas, Paulius Baronas, Nathalie Zink-Lorre, José M. Villalvilla, Enrique Ortí, Pedro G. Boj, Juan Aragó, María A. Díaz-García, Rafael Muñoz-Mármol |
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| Přispěvatelé: | Universidad de Alicante. Departamento de Óptica, Farmacología y Anatomía, Universidad de Alicante. Departamento de Física Aplicada, Universidad de Alicante. Instituto Universitario de Materiales, Física de la Materia Condensada |
| Rok vydání: | 2021 |
| Předmět: |
Física de la Materia Condensada
Substituents Surfaces Coatings and Films Electronic Optical and Magnetic Materials chemistry.chemical_compound General Energy chemistry Física Aplicada Political science Laser performance Christian ministry Physical and Theoretical Chemistry Imide positions Perylenediimide dyes Imide Humanities 1 7-bay-substituted Óptica |
| Zdroj: | RUA. Repositorio Institucional de la Universidad de Alicante Universidad de Alicante (UA) |
| ISSN: | 1932-7455 1932-7447 |
| DOI: | 10.1021/acs.jpcc.1c00833 |
| Popis: | Perylenediimide (PDI) compounds with no substituents in their core are widely used as the active units of thin-film organic lasers. Recently, bay-substituted PDIs (b-PDIs) bearing two sterically hindering diphenylphenoxy groups at the 1,7-bay positions have received great attention because they show red-shifted emission with respect to bay-unsubstituted PDIs, while maintaining high photoluminescence (PL) quantum yields and low amplified spontaneous emission (ASE) thresholds even at high doping rates. However, their ASE photostability is relatively low compared to that of state-of-the-art PDIs. Thus, the design of b-PDIs with improved ASE photostability remains a challenge. Here, the synthesis of two b-PDIs with phenyl-type substituents at the imide positions is reported. Complete characterization of their optical properties, including absorption, PL, ASE, and transient spectroscopy, supported also by quantum chemical calculations, is performed with the dyes diluted in either a liquid solvent or a polystyrene film. Film experiments were accomplished at very low doping rates, to resemble the isolated molecule behavior, and also in a range of increasing doping rates, to investigate concentration quenching effects. The reported b-PDIs show improved ASE photostability (3-fold) with respect to b-PDIs with aliphatic-type substituents at the imide positions, whilst they show more propensity toward aggregation. The authors thank the Spanish Ministry of Economy and Competitiveness MINECO and the European Social Funds (project MAT2015-66586-R and FPI fellowship BES-2016-077681), the Ministry of Science and Innovation (MICINN) and the European FEDER funds (CTQ2016-77039-R, PGC2018-099568-B-I00, and PID2019-109200GB-I00, and Unidad de Excelencia María de Maeztu CEX2019-000919-M), and the Generalitat Valenciana (PROMETEO/2020/077 and SEJI/2018/035). J.A. acknowledges the MICINN for the “Ramón-y-Cajal” Fellowship (RyC-2017-23500). |
| Databáze: | OpenAIRE |
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