ãSynthesis and optoelectronic properties of novel fluorene-bridged dinuclear cyclometalated iridium (III) complex with A-D-A framework in the single-emissive-layer WOLEDsã?was written by He, Keqi; Wang, Xiangdong; Yu, Junting; Jiang, Haigang; Xie, Guangshan; Tan, Hua; Liu, Yu; Ma, Dongge; Wang, Yafei; Zhu, Weiguo. Product Details of 29682-15-3This research focused onWOLED SEL framework fluorine bridged dinuclear cyclometalated iridium complex; complex optoelectronic property Suzuki coupling reaction. The article conveys some information:
To explore the influence of push-pull chromophores on properties of emitter in organic light-emitting devices (OLEDs), an acceptor-donor-acceptor (A-D-A)-based dinuclear iridium (III) complex of (dfppy)4Ir2(dipic-FL) was synthesized via Suzuki coupling reaction, in which dfppy is 2-(2,4-difluorophenyl)pyridine and dipic-FL is 2,7-di(5-pyridyl-2-carboxyl)-9,9-dioctyl-9H-fluorene. An intense emission peak at about 480 nm resulting from the (dfppy)2Ir(pic) chromophore and a weak long-wavelength emission band at 580-660 nm attributed to intramol. charge transfer transition were exhibited for (dfppy)4Ir2(dipic-FL) in dichloromethane solution But a remarkably hypsochromic photoluminescence profile with an intense characteristic emission peak at 422 nm was observed, which is attributed to the intraligand (IL) π-π* excited states in its thin film. White emission with a maximum luminance of 1040 cd/m2 and current efficiency of 1.2 cd/A was obtained in its single-emissive-layer (SEL) OLEDs with a configuration of ITO/PEDOT:PSS/(dfppy)4Ir2(dipic-FL) (10 wt%):TCTA/TPBi/LiF/Al. To our knowledge, this is one of the best examples in term of dinuclear iridium complex as single dopant in the high-performance white-emitting SEL-OLEDs.Methyl 5-bromopicolinate(cas: 29682-15-3Product Details of 29682-15-3) was used in this study.
Methyl 5-bromopicolinate(cas: 29682-15-3) belongs to pyridine. Pyridine-based materials are valued for their optical and physical properties as well as their medical potential. Additionally, pyridine-based natural products continue to be discovered and studied for their properties and to understand their biosynthesis.Product Details of 29682-15-3