学科分类
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33 个结果
  • 简介:Anon-linearoptical(NLO)materialwassynthesizedbymeansofasimplemethod.Thismaterialcanbeappliedinelectro-optical(EO)devices,suchasEOswitchesandmodulators.TheDisperseRed1(DR1)wasdopedinpolymethyl-methacrylate-co-glycidylmethacrylate(PMMA-co-GMA)astheNLOactivechromophore.Thesynthesisprocessandmaterialstructurewereexpressed.Thethermalproperties,surfacemorphologyandopticalcharacteristicsofthematerialwereinvestigatedbymeansofdifferentialscanningcalorimetry(DSC),thermogravimetricanalysis(TGA),atomicforcemicroscopy(AFM),andm-linestechnique.Usingthereflectiontechnique,thevalueoftheelectro-opticalcoefficientγ33wasmeasuredas11pm/Vatawavelengthof1310nm.AnEOswitchwithnanosecondresponsebasedonthismaterialhasbeenfabricated.

  • 标签: 开关性能 电光 聚甲基丙烯酸甲酯 甲基丙烯酸缩水甘油酯 非线性光学活性 差示扫描量热法
  • 简介:[Hmim]3PW12O40wasdevelopedandusedintheacetalizationofcarbonylcompoundsinexcellentyields.Theionicliquid-heteropolyacidhybridcompoundandreactionmediumformedtemperature-dependentphase-separationsystemwiththeeaseofproductaswellascatalystseparation.Thecatalystwasrecycledmorethan10timeswithoutanyapparentlossofcatalyticactivity.

  • 标签: CARBONYL COMPOUNDS reaction MEDIUM used in
  • 简介:由有固有的技巧此处,在房间膜上与高度选择的离子隧道和泵在液体从盐内容产生可观的bioelectricity的生物系统启发了一只充分不能生活的、单个杯子圆锥形的nanopores收获精力被表明。圆锥形的nanopores被显示出被取决于离子散开的方向的电解质集中坡度控制的否定地控告的玻璃里的离子当前的校正(ICR)。ICR的度与向前增加被提高集中差别。当集中坡度相对地被使用时,不平常的校正倒置被观察。有单个nanopore的最大的力量产量接近104 pW。这个灵巧、成本效率的收获精力的系统有潜力驱动干净精力的恢复种的微小的生物医学的设备或构造未来。

  • 标签: 浓度梯度 能量输出 离子电流 离子通道 纳米孔 锥形
  • 简介:FlavonolswereextractedfromAcanthopanaxSenticosusHarmsbySoxhletextraction(SE),atmosphericpressuremicrowave-assistedextraction(AMAE)andpressurizedmicrowave-assistedextraction(PMAE).Theinfluencesofexperimentalconditions,suchasconcentrationofethanolintheeluent,microwaveirradiationtime,etc.ontheextractionyieldwerestudied.Fourflavonols(hyperin,rutin,quercitrinandquercetin)intheextractsweredeterminedquantitativelybyHPLCmethod.TheexperimentalresultsdemonstratetheadvantagesofPMAEandAMAEoverthoseofconventionalSE,thatistheextractiontimeisdramaticallyreduced,andtheyieldsofflavonolsareeffectiveimproved.AlthoughtheyieldofflavonolsishigherandtheextractiontimeisshorterbyPMAEthanthoseofAMAE,flavonolsareeasytobedecomposedoveracertaintime.

  • 标签: 微波辅助提取 高效液相色谱分析 黄酮醇 刺五加 微波辅助萃取 高效液相色谱法
  • 简介:为拳头预定准备一主要固态包括1-methyl-3-propylimidazolium碘化物(MPII)的高有效的电镀物品传导性的材料,benzimidazole(双性人),碘和锂碘化物被报导。在这电解质,双性人充当不仅添加剂而且gelators。与它的重要电气化学的性质,3.07%的全面效率不到AM1.5被完成(100mW/cm2)。

  • 标签: 染料敏化 太阳能电池 离子性液体 固体状态 电解液
  • 简介:Amantadine(AMA)是在养蜂过去常保护蜜蜂免于sacbrood病毒(Moratoraetatulae)的抗病毒的药。这研究描述了可靠高效的液体色析法(HPLC)为用稳固阶段的抽取(SPE)在蜂蜜分析AMA的方法为纯化的子弹(PlexaPCX),4-fluoro-7-nitro-2,1,3-benzoxadiazole(NBD-F)作为一个列前derivatization代理人,和fluorometric察觉(ex=470nm,em=530nm)。色析法的分离在XDBC18列上被执行(150

  • 标签: 高效液相色谱法 固相萃取 金刚烷胺 荧光检测 柱前衍生 蜂蜜
  • 简介:Thesynthesisandcharacterizationoffournewsilicon-linkedlanthanocenecomplexeswithpendantphenylgroupsoncyclopentadienewerereported.Basedonthedataofelementalanalyses,MSandIR,thecomplexeswerepresumedtobeunsolvatedanddimericcomplexes[Me2Si(C5H3CMe2C6H5)2LnC1]2[Ln=Er(1),Gd(2),Sm(3),Dy(4)].InconjunctionwithAlEt3orsodiumhydrideastheco-catalyst,thesecomplexescouldefficientlycatalyzethepolymerizationofmethylmethacrylate(MMA).Whenthenanometricsodiumhydridewasusedasaco-catalyst,thecomplexeswerehighlyeffectiveforthepolymerizationofMMA.Atlowtemperatureandinshorttime,in[MeESi(C5H3CMe2C6H5)2LnC1]2/NaH(nanometric)system,thepolymerwasobtainedinmorethan80%yieldandthemolecularweightwasgreaterthan105.Theactivityreachedthatoforganolanthanidehydrideasasingle-componentcatalyst.In]MeESi(C5H3CMe2C6H5)2ErC1]2/Nail(nanometric)system,theeffectsofthemolarratioofMMA/catalystandcatalyst/co-catalyst,andthetemperatureonpolymerizationwerestudied.

  • 标签: 合成 表征 硅链镧配合物 催化活性 甲基异丁烯酸酯 聚合反应