148339 20250116161254.0 doi 10.1039/c9tc00747d sideral 112534 ART-2019-112534 eng Sicilia Martínez, María Violeta Universidad de Zaragoza (orcid)0000-0002-0257-0483 Highly efficient platinum-based emitters for warm white light emitting diodes 2019 New cycloplatinated N-heterocyclic carbene (NHC) compounds with chelate diphosphines (P^P) as ancillary ligands, [Pt(R-C^C*)(P^P)]PF6 (R-C = Naph, P^P = dppm 1A, dppe 2A, dppbz 3A; R = CO2Et, P^P = dppm 1B, dppe 2B, dppbz 3B), have been prepared. Their photophysical properties have been extensively studied and supported by the time-dependent-density functional theory (TD-DFT). These compounds show a great thermal stability and a very efficient blue (CO2Et-C^C*) or cyan (Naph^C*) emission in PMMA films (5 wt%), with photoluminescence quantum yield (PLQY) ranging from 53% to 95%. In the solid state, the emission of the Naph^C* derivatives becomes orange (1A, 2A) or white (3A, dual blue and yellow emission) due to the operating p–p intermolecular interactions. We have investigated the potential use of these materials for solid-state lighting (SSL) applications. OLEDs with different architectures containing mixtures of 1B and 3A in different ratios as dopants were fabricated. In addition, two-component white light remote phosphors were obtained by stacking different combinations of 1B or 3B as the blue emitter with [Pt(bzq)(CN)(CNXyl)] (R) (bzq = benzoquinolate, Xyl = 2,6-dimethylphenyl) as the red emitter using a 365 nm LED as pumping source. By changing the blue : red ratio, warm white light with optimal CRI and Duv values and a great range of nominal CCT (4000–2000 K) was obtained. Access copy available to the general public Unrestricted info:eu-repo/grantAgreement/ES/DGA-FSE/E17-17R info:eu-repo/grantAgreement/ES/MINECO-FEDER/CTQ2015-67461-P info:eu-repo/semantics/openAccess by-nc http://creativecommons.org/licenses/by-nc/3.0/es/ 7.059 2019 PHYSICS, APPLIED 21 / 154 = 0.136 2019 Q1 T1 MATERIALS SCIENCE, MULTIDISCIPLINARY 47 / 314 = 0.15 2019 Q1 T1 1.934 2019 Materials Chemistry 2019 Q1 Chemistry (miscellaneous) 2019 Q1 info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion Fuertes, Sara (orcid)0000-0003-1812-3175 Chueca, Andrés J. (orcid)0000-0001-7891-8506 Arnal, Lorenzo Universidad de Zaragoza (orcid)0000-0002-0283-9307 Martín, Antonio Universidad de Zaragoza (orcid)0000-0002-4808-574X Perálvarez, Mariano Botta, Chiara Giovanella, Umberto 2010 760 Universidad de Zaragoza Dpto. Química Inorgánica Área Química Inorgánica 7, 15 (2019), 4509-4516 J. mater. chem. C JOURNAL OF MATERIALS CHEMISTRY C 2050-7526 1788182 http://zaguan.unizar.es/record/148339/files/texto_completo.pdf Postprint 2859853 http://zaguan.unizar.es/record/148339/files/texto_completo.jpg?subformat=icon icon Postprint oai:zaguan.unizar.es:148339 articulos driver 2025-01-16-14:31:35 ARTICLE