简介:Variousmethodsforsynthesisof2-methyl-5,6-(1,4,7,10,13-pentaoxatridecamethyl-ene)benzotellurazole(8)aredescribed.Underdifferentconditions,alkylationofcompound8withmethyliodidegavetelluroniumsalt1,2-dimethyl-5,6-(1,4,7,10,13-pentaoxatridecamethylene)benzo-tellurazoliumiodide(15)orquaternaryammoniumsalt2,3-dimethyl-5,6-(1,4,7,10,13-pentaoxatri-decamethylene)benzotellurazoliumiodide(14)inhighyields,repectively.Thecyaninedye3,3’-dimethyl-5,6,5’,6’-bis(1,4,7,10,13-pentaoxatridecamethylene)telluracarbocyanineiodide(16)isobtainedbycondensationof14withethylorthoformateinaceticanhydride.Thevisibleabsorptionofthecyaninedyeisalsodiscussed.
简介:Thetitlecopolymer(PDEBO)wassynthesized.ThethermalcharacteristicsofthepolymerweredeterminedbymeansofDSCandTGA,revealingthatthepolymerhasagoodthermalstability.TheX-raydiffractionmeasurementsofthethinfilmsshowedthatthepolymerisdisorder.Electroluminescence(EL)inthegreenregionofthespectrumwithamaximumat500nmwasobservedfromthepolymerfilmssandwichedbetweenindium-tin-oxideandanAlelectrode.
简介:这份报纸的目的是提供基于carbazole的蓝轻射出的dendrimers的二个系列的电子、光的性质的深入的调查,包括16六oligomers。这些材料作为有效在器官的轻射出的二极管为申请显示出大潜力蓝光并且由于由不同电子施主(D)和电子领受人(A)的使用调节光、电子的性质射出材料的红灯。处于扎根的状态的这些混合物的几何、电子的结构用密度被计算功能的理论(DFT)和abinitioHF,而最低汗衫使状态激动被abinitiosingle刺激配置相互作用(CIS)优化。所有DFT计算用在6-31G*基础集合上功能的B3LYP被执行。结果证明最高占据的分子的orbitals(人),最低占据分子的orbitals(LUMO),精力差距,电离潜力,电子亲密关系和各个的重组精力分子被不同D和A一半和不同代用品位置影响。
简介:到目前为止它是不清楚的是否演变氧的建筑群(OEC)的版本包括PsbO,PsbP,和PsbQ蛋白质的子单元被photosystemII(PSII)膜的phosphorylation在轻应力下面影响。在这个工作,不同phosphorylatedPSII膜从菠菜被获得。Phosphorylation部分在轻应力下面从PSII膜压制了PsbO,PsbP,和PsbQ蛋白质的版本。反应的氧种类包括superoxide阴离子,氢过氧化物和氢氧根基,在non-phosphorylated和phosphorylatedPSII膜涉及PsbO蛋白质的小部分的版本,然而并非在PsbP和PsbQ蛋白质的版本。建议的结果,PsbO,PsbP,和PsbQ蛋白质的版本部分是,这phosphorylation在PSII膜调整的所有,和在在non-phosphorylatedPSII膜的OEC子单元的版本的反应的氧种类的角色与在phosphorylatedPSII膜一样。
简介:Inthispaper,athiol-functionalizednanophotocatalystMPTES/TiO_2wasfirstsynthesizedbyone-potmethodusingP123asatemplate.X-raydiffractionconfirmsthecompleteanatasecrystallineofthiol-functionalizedTiO_2,N_2adsorption-desorptionisothermdemonstratedthatthesematerialspossesshighsurfaceareaandmesoporousstructure.TheresultsofXPSshowthatMPTEShasbeensuccessfullypolymerizedinmesoporousstructuredTiO_2.Thephotodegradationofphenanthrene(PHE)wasinvestigatedundervisiblelightirradiation(λ>420nm)toevaluatethephotocatalyticactivityofthesematerials.BasedtheexperimentresultsofGC-Massanalysis,apossiblemechanismwasproposed.