[EN] PHOTOALIGNING MATERIALS<br/>[FR] MATÉRIAUX DE PHOTOALIGNEMENT
申请人:ROLIC AG
公开号:WO2013050121A1
公开(公告)日:2013-04-11
The present invention relates to polymer, homo- or copolymer or oligomer for the photoalignment of liquid crystals, especially for the planar orientation of liquid crystals, comprising a main chain and a side chain, wherein the side chain and/or main chain comprises a polar group, compositions thereof, and its use for optical and electro optical devices, especially liquid crystal devices (LCDs).
Benzimidazoles and benzoxazoles via the nucleophilic addition of anilines to nitroalkanes
作者:Alexander V. Aksenov、Alexander N. Smirnov、Nicolai A. Aksenov、Asiyat S. Bijieva、Inna V. Aksenova、Michael Rubin
DOI:10.1039/c5ob00131e
日期:——
PPA-induced umpolung triggers efficient nucleophilic addition of unactivated anilines to nitroalkanes to afford benzoxazoles and benzimidazoles.
PPA诱导的极性反转触发了对未活化苯胺与硝基烷烃的高效亲核加成,生成苯并噁唑和苯并咪唑。
Syntheses and reactivity of bisflavins. Oxidation of N-benzyl-1,4-dihydronicotinamide by flavins in aqueous solution
作者:Yumihiko Yano、Eiichi Ohya
DOI:10.1039/p29840001227
日期:——
Several bisflavins linked at the 10,10′-positions of isoalloxazine rings have been synthesized. The kinetics of the oxidation of N-benzyl-1,4-dihydronicotinamide in aqueoussolution have been examined. It has been found that each flavin of a bisflavin is considerably influenced by another intramolecular flavin moiety due to the formation of a charge-transfer complex between intramolecularly reduced
UNUSUAL KINETIC BEHAVIOR OF BIS-FLAVIN FOR<i>N</i>-BENZYL-1,4-DIHYDRONICOTINAMIDE (BNAH) REDUCTION IN AN AQUEOUS SOLUTION
作者:Yumihiko Yano、Eiichi Ohya
DOI:10.1246/cl.1983.1281
日期:1983.8.5
Several bis-flavins linked at 10,10′-positions of isoalloxazine rings were synthesized. The reactivity of each flavin of a bis-flavin was found to be considerably influenced by another intramolecular flavin moiety, depending on the conformation of the bis-flavin.
Non-template synthesis of new tetra-aza macrocyclic ligands and their cobalt, nickel, and copper complexes: X-ray structure of (5,14,15,16,17,18-hexahydro-7-methyldibenzo[b,i][1,4,8,11]tetra-azacyclotetradecinato) nickel(II) monoperchlorate
作者:Christopher W. G. Ansell、M. F. H. Y. J. Chung、Mary McPartlin、Peter A. Tasker
DOI:10.1039/dt9820002113
日期:——
ion. Treatment of [NiL1][ClO4] with NEt3 in air results in oxidative dehydrogenation of the ligand and the isolation of [Ni(C19H16N4)]. Crystals of (1) are triclinic, space group P, with a= 12.351(3), b= 10.596(3), c= 7.841(3)Å, α= 91.971(3), β= 92.654(3), γ= 108.978(3)°, and Z= 2.
开链四胺1,3-双(的反应ö -aminophenylamino)丙烷(L)或1,3-双(ø氨基p -methylphenylamino)丙烷(L')与3-乙氧基-2-甲基丙烯醛给出标题大环HL 1或其甲基取代的衍生物HL 2的收率为40%左右,而无需使用高稀释度或金属模板技术。HL 1或HL 2与Co II,Ni II或Cu II盐的反应伴随有配体的去质子化以及其与作为单阴离子物质的金属离子的配位。[NiL 1 ] [ClO的X射线结构4 ](1)确定了去质子的位置,并确定了金属离子的正方形平面几何形状。在空气中用NEt 3处理[NiL 1 ] [ClO 4 ]会导致配体的氧化脱氢和[Ni(C 19 H 16 N 4)]的分离。(1)的晶体是三斜晶系,空间群P, a = 12.351(3), b = 10.596(3), c = 7.841(3)Å,α= 91.971(3),β= 92.654(3),γ