Jiang, Xi published the artcileSynthesis and blue electroluminescent properties of copolymers derived from silafluorene and thiophene, Application of 4-Chloro-2-methylphenylboronic acid, the publication is Gaodeng Xuexiao Huaxue Xuebao (2007), 28(8), 1586-1592, database is CAplus.
Two series of silafluorene based copolymers containing a small molar fraction (1%-3%) of thiophene derivatives moieties were synthesized with Yamamoto coupling reaction: poly {9,9-dihexyl-3,6-silafluorene-co-[2,5-di(phenylene-4-yl)-thiophene]} (PSiF-DPT) and poly {9,9-dihexyl-3,6-silafluorene-co-[2,5-di-((2-methylphenylene)-4-yl)-thiophene]} (PSiF-DMPT). These copolymers were characterized via UV-Vis absorption spectra and photoluminescence spectra. Polymer light-emitting diodes (PLED) were fabricated to investigate these electroluminescent properties. It was found that the thiophene derivatives moieties became the efficient blue emitter via efficient energy transfer from the polysilafluorene segments. With the decrease of the coplanarity of thiophene derivatives or its feed ratio, the PL and EL spectra can be blue shifted. The color purity can be adjusted to CIE (0.19, 0.16) with a EL quantum efficiency of 0.46%.
Gaodeng Xuexiao Huaxue Xuebao published new progress about 209919-30-2. 209919-30-2 belongs to chlorides-buliding-blocks, auxiliary class Chloride,Boronic acid and ester,Benzene,Boronic Acids,Boronic acid and ester, name is 4-Chloro-2-methylphenylboronic acid, and the molecular formula is C7H8BClO2, Application of 4-Chloro-2-methylphenylboronic acid.
Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics