Li, Hui published the artcileDesign, synthesis, and optoelectronic properties of dendrimeric Pt(II) complexes and their ability to inhibit intermolecular interaction, Quality Control of 2622-67-5, the publication is Inorganic Chemistry (2014), 53(2), 810-821, database is CAplus and MEDLINE.
Dendrimeric Pt-(II) complexes [(CN̂)-Pt(dpm)] and [Pt(CN̂)2] (Hdpm = dipivaloylmethane, HCN̂ = 1,2-diphenylbenzoimidazole and its derivatives containing the carbazole dendrons) have been synthesized and characterized systematically. All of the complexes display green emission in the range of 495-535 nm that originated from the 360-440 nm absorption bands, which are assigned to dπ-(Pt)→π*-(L) metal-to-ligand charge transfer (MLCT) mixed with intraligand π-(L)→π*-(L) transition. Solution photoluminescence quantum yield (φp 0.26-0.31) of the heteroleptic complexes [(CdoldolanddoldolN)-Pt-(dpm)] obviously increases when compared with that of complex [(CdoldolanddoldolN)-Pt-(acac)]. Organic light-emitting diode devices based on these Pt-(II) complexes with a multilayer configuration were fabricated and gave desirable electroluminescent (EL) performances, such as non- or less red-shifted EL spectra, in comparison with the photoluminescence spectra and slow efficiency roll-off with increasing brightness or c.d. Complex [(t-BuCzCzPBI)-Pt-(dpm)] (where t-BuCzCzPBI = 1-(4-(3,6-di-(3,6-di-t-butyl-carbazol-9-yl))-carbazol-9-yl)-phenyl-2-phenylbenzoimidazole) showed the best performance, with a maximum current efficiency of 29.31 cd/A and a maximum external quantum efficiency (EQE) of 9.04% among the fabricated devices. Likewise, for homoleptic [Pt-(t-BuCzCzPBI)2] dendrimer, the powder φp (0.14) and maximum EQE (0.74%) improve by 7 and 7.4 times, resp., as high as they do for nondendrimeric [Pt-(1,2-diphenylbenzoimidazole)2] (0.02, 0.10%), although its efficiency is still lower than that of the heteroleptic counterpart due to the severely distorted square-planar geometry of the emitting core. These results reveal that large steric hindrance from ancillary ligand (dpm) or the homoleptic conformation can effectively inhibit intermol. interaction for these dendrimeric Pt-(II) complexes.
Inorganic Chemistry 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, Quality Control of 2622-67-5.
Referemce:
https://en.wikipedia.org/wiki/Imidazole,
Imidazole | C3H4N2 – PubChem