Li, Maoqiu; Yu, Junting; Liu, Denghui; Tan, Shuai; Yang, Xiaoqin; Cao, Liqin; Tan, Yuna; Cao, Jiamin; Tan, Hua; Wang, Yafei; Zhu, Weiguo published an article in 2021. The article was titled ãEnhancing the efficiency of near-infrared iridium (III) complexes-based OLEDs by auxiliary ligand functionalizationã? and you may find the article in Synthetic Metals.SDS of cas: 29682-15-3 The information in the text is summarized as follows:
In order to enhance the charge balance of organic near IR (NIR) electroluminescent devices, an ancillary ligand of pic-SCz which was covalently linking the bipolar group SCz (composed of PS (S) and tBuCz (Cz)) to pic (SCz=3,6-di-tert-butyl-9-(4-(phenylsulfonyl)phenyl)-9H-carbazole; PS = Ph sulfone; tBuCz = 3,6-di-tert-butylcarbazole; pic= 2-picolinic acid) was developed for iridium (III) complex (TPA-BTz-Iq)2Ir(pic-SCz). Compared with parent complex (TPA-BTz-Iq)2Irpic, the photophys. and electroluminescent properties of (TPA-BTz-Iq)2Ir(pic-SCz) were improved by introducing Cz as hole transporting unit and PS as electron transporting unit. In phosphorescent organic light emitting devices (OLEDs), using (TPA-BTz-Iq)2Ir(pic-SCz) as the luminescent dopant, we obtained a maximum external quantum efficiency (EQEmax) of 0.95% at the wavelength of 712 nm. This is 3.28 times as much as that of (TPA-BTz-Iq)2Irpic (EQEmax is 0.29% at 712 nm). The experimental part of the paper was very detailed, including the reaction process of Methyl 5-bromopicolinate(cas: 29682-15-3SDS of cas: 29682-15-3)
Methyl 5-bromopicolinate(cas: 29682-15-3) belongs to pyridine. When pyridine is adsorbed on oxide surfaces or in porous materials, the following species are commonly observed: (i) pyridine coordinated to Lewis acid sites, (ii) pyridine H-bonded to weakly acidic hydroxyls, and (iii) protonated pyridine. At high coverage, physisorbed pyridine and protonated dimers can also be observed.SDS of cas: 29682-15-3