Hu, Wei-Kang published the artcileBlue-to-green electrophosphorescence from iridium(III) complexes with cyclometalated pyrimidine ligands, Formula: C8H5F3N4, the publication is Dyes and Pigments (2018), 284-292, database is CAplus.
A series of 4, 6-disubstituted pyrimidine based iridium(III) complexes (1-5), has been synthesized with a simple method. Single X-ray structural analyses were conducted on 5 to reveal their coordination arrangement. These complexes exhibit almost single peak emission with the peak wavelength located in the range of 468-505 nm and quantum yields of over 75%. The relationship between photophys. properties and the substituent nature of the complexes was discussed by d. functional theory. Organic light-emitting diodes (OLEDs) were also fabricated using these complexes as dopants in 15 wt%. The green device based on 1 shows a maximum external quantum efficiency, current efficiency, and power efficiency of 9.7%, 46.5 cd A-1 and 29.0 lm W-1, resp., while the blue device based on 5 exhibits an external quantum efficiency of up to 14.5%, peak luminance efficiency of 28.0 cd A-1 and power efficiency of 19.5 lm W-1. Moreover, the Commission Internationale de L’Eclairage (CIE) coordinates of 5 are (0.15, 0.30) which is closer to blue emission than that of FIrpic.
Dyes and Pigments published new progress about 219508-27-7. 219508-27-7 belongs to triazoles, auxiliary class Trifluoromethylated Building Blocks, name is 2-[5-(Trifluoromethyl)-1H-1,2,4-triazol-3-yl]pyridine, and the molecular formula is C8H5F3N4, Formula: C8H5F3N4.
Referemce:
https://en.wikipedia.org/wiki/1,2,3-Triazole,
Triazoles – an overview | ScienceDirect Topics