Jiao, Yan’s team published research in Journal of Materials Chemistry C: Materials for Optical and Electronic Devices in 4 | CAS: 2622-67-5

Journal of Materials Chemistry C: Materials for Optical and Electronic Devices published new progress about 2622-67-5. 2622-67-5 belongs to imidazoles-derivatives, auxiliary class Benzimidazole,Benzene,Benzimidazole, name is 1,2-Diphenyl-1H-benzo[d]imidazole, and the molecular formula is C19H14N2, Safety of 1,2-Diphenyl-1H-benzo[d]imidazole.

Jiao, Yan published the artcileA facile color-tuning strategy for constructing a library of Ir(III) complexes with fine-tuned phosphorescence from bluish green to red using a synergetic substituent effect of -OCH3 and -CN at only the C-ring of CN̂ ligand, Safety of 1,2-Diphenyl-1H-benzo[d]imidazole, the publication is Journal of Materials Chemistry C: Materials for Optical and Electronic Devices (2016), 4(19), 4269-4277, database is CAplus.

By simply grafting a -CN group and/or a -OCH3 group onto the meta- and/or para-site of the C-ring, a series of Ir(III) complexes bearing a similar mol. platform of bis(1,2-diphenyl-1H-benzimidazolato-N,C2′)iridium(III)(acetylacetonate), but showing fine-tuned phosphorescence covering nearly the whole window of the visible spectrum with a wide color-tuning range of 109 nm was acquired. With the help of DFT calculations, it was revealed that if the C-related arene moiety of the CN̂ ligand (C-ring) contributes substantially to both the HOMO and LUMO of an Ir(III) complex, the concurrent introduction of an electron-donating -OCH3 and an electron-withdrawing -CN groups on the C-ring at the meta- and para-sites relative to the Ir atom may lead to a favorable synergetic substituent effect on the color-tuning direction. This may represent a facile yet effective mol. design strategy for Ir(III) complexes with a desirous emission color. A bluish green organic light-emitting diode (OLED) based on one of the objective complexes displayed a maximum current efficiency of 62.1 cd A-1, an external quantum efficiency of 19.8%, and a brightness of 48 040 cd m-2, implying that high-performance red and blue OLED phosphors as well as libraries of Ir(III) complexes bearing similar mol. platforms may be developed through this -OCH3 and -CN synergetic substitution strategy.

Journal of Materials Chemistry C: Materials for Optical and Electronic Devices published new progress about 2622-67-5. 2622-67-5 belongs to imidazoles-derivatives, auxiliary class Benzimidazole,Benzene,Benzimidazole, name is 1,2-Diphenyl-1H-benzo[d]imidazole, and the molecular formula is C19H14N2, Safety of 1,2-Diphenyl-1H-benzo[d]imidazole.

Referemce:
https://en.wikipedia.org/wiki/Imidazole,
Imidazole | C3H4N2 – PubChem