3508-78-9Relevant articles and documents
Synthesis and photo- and electro-luminescent properties of Ir(III) complexes attached to polyhedral oligomeric silsesquioxane materials
Yu, Tianzhi,Wang, Xin,Su, Wenming,Zhang, Chengcheng,Zhao, Yuling,Zhang, Hui,Xu, Zixuan
, p. 80572 - 80582 (2015)
This paper describes synthesis, photophysical, electrochemical characterizations of two new polyhedral oligomeric silsesquioxane (POSS)-based green-light phosphorescent materials, consisting of an emissive Ir(iii) complex and carbazole moieties covalently attached to a polyhedral oligomeric silsesquioxane (POSS) core. These phosphorescent POSS materials offer many advantages including amorphous properties, good thermal stabilities, and good solubility in common solvents, and high purity via column chromatography. The photoluminescence spectra of the POSS materials in solutions and in the solid state indicate a reduction in the degrees of interactions among Ir(iii) complex units and concentration quenching due to the bulky POSS core. Solution processed light-emitting devices with a configuration of ITO/PEDOT:PSS (45 nm)/CBP:POSS materials (50 nm)/TPBi (50 nm)/Liq (2 nm)/Al (150 nm) were fabricated. The devices based on these POSS materials exhibit a maximum external quantum efficiency (EQE) of 7.82% and a maximum luminance of 21:285 cd m-2.
gem-dichlorocyclopropanes containing acetylacetone fragment in the side chain
Borisova, Yu. G.,Raskildina,Zlotskii
, (2016)
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The bidirectional total synthesis of sampsonione P and hyperibone i
Lindermayr, Katharina,Plietker, Bernd
, p. 12183 - 12186 (2013)
Make it simple: The separation of framework-decorating from framework-constructing steps facilitated the selective introduction of one prenyl group next to allyl groups. The selective epoxidation of the more electron-rich prenyl group led to the efficient formation of the tetrahydrofuran moiety in the title compounds. Spectroscopic analysis of hyperiboneI and comparison with literature data led to a revision of the original structure. Copyright
Electrochemical oxidative cyclization of olefinic carbonyls with diselenides
Guan, Zhipeng,Wang, Yunkun,Wang, Huamin,Huang, Yange,Wang, Siyuan,Tang, Hongding,Zhang, Heng,Lei, Aiwen
supporting information, p. 4976 - 4980 (2019/09/30)
The tandem cyclization of olefinic carbonyls with easily accessible diselenides facilitated by electrochemical oxidation has been successfully developed, which provides an environmentally friendly method for the construction of C-Se and C-O bonds simultaneously. A series of seleno dihydrofurans and seleno oxazolines, bearing fragile heterocycles, subtle C-I bonds and supernumerary vinyl groups, were forged using this elegant chelation strategy. Neither metal catalysts nor external chemical oxidants are required to promote this transformation.
Highly efficient Tsuji-Trost allylation in water catalyzed by Pd-nanoparticles
Llevot,Monney,Sehlinger,Behrens,Meier
supporting information, p. 5175 - 5178 (2017/07/12)
Palladium nanoparticles stabilized by poly(vinylpyrrolidone) catalyze Tsuji-Trost allylations in water with very high turnover numbers. The di-allylation of methylene active compounds and the allylation of bio-based phenols was performed in high yield. The allylation of lignin showed a high selectivity towards the phenolic OH groups.
