Ho, Cheuk-Lam published the artcilePhosphorescence color tuning by ligand, and substituent effects of multifunctional iridium(III) cyclometalates with 9-arylcarbazole moieties, Recommanded Product: 9-(4-Fluorophenyl)-9H-carbazole, the publication is Chemistry – An Asian Journal (2009), 4(1), 89-103, database is CAplus and MEDLINE.
The synthesis, isomeric studies, and photophys. characterization of multifunctional cyclometalated Ir(III) complexes containing a fluoro- or Me-substituted 2-[3-(N-phenylcarbazolyl)]pyridine mol. framework are presented. All of the complexes are thermally stable solids and highly efficient electrophosphors. The optical, electrochem., photo-, and electrophosphorescence traits of these Ir phosphors were studied in terms of the electronic nature and coordinating site of the aryl or pyridyl ring substituents. The correlation between the functional properties of these phosphors and the results of d. functional theory calculations was made. Arising from the propensity of the electron-rich carbazolyl group to facilitate hole injection/transport, the presence of such a moiety can increase the highest-occupied MO levels and improve the charge balance in the resulting complexes relative to the parent phosphor with 2-phenylpyridine ligands. Remarkably, the excited-state properties can be manipulated through ligand and substituent effects that allow the tuning of phosphorescence energies from bluish green to deep red. Electrophosphorescent organic light-emitting diodes (OLEDs) with outstanding device performance can be fabricated based on these materials, which show a maximum current efficiency of â?3.4 cd A-1, corresponding to an external quantum efficiency of â?2.9% ph/el (photons per electron) and a power efficiency of â?3.4 Lm W-1 for the best device. The present work provides a new avenue for the rational design of multifunctional Ir-carbazolyl electrophosphors, by synthetically tailoring the carbazolyl pyridine ring that can reveal a superior device performance coupled with good color-tuning versatility, suitable for multicolor-display technol.
Chemistry – An Asian Journal published new progress about 57103-14-7. 57103-14-7 belongs to isoxazole, auxiliary class Fused Tricycles,Carbazoles, name is 9-(4-Fluorophenyl)-9H-carbazole, and the molecular formula is C18H12FN, Recommanded Product: 9-(4-Fluorophenyl)-9H-carbazole.
Referemce:
https://en.wikipedia.org/wiki/Isoxazole,
Isoxazole | C3H3NO – PubChem