简介：6,9,11-Trihydroxy-6a,12a-dehydrorotenoid1(coccineoneB)wassynthesizedfrom2-hydroxybenzaldehyde2andphloroglucinol.

简介：ElectrochemicalBettednotonlycanobtaintheconductingfilmofpolyanilineonaglasscarbonelectrode,butalsocanimobilizePMo12O403-inthefilmtoformaorganicconductingfilmelectrodemodifiedbyheteropolyanion.ThepaperherereportselectrochemicalchangesinthepreparationofPMo12O403--polyanilinemodifiedelectrode,theelectrochemicalreactionmechanismofthemodifiedelectrodewasobtainedfromthestudyonitsredoxproperties.Moreover,theaboveelectrodeshowedmarkedelectrocatalysisforthereductionreactionofCIO?-.

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简介：Li4Ti5O12（LTO）/carbonnanotubes（CNTs）compositematerialissynthesizedbasedonasolid-statemethodbysand-milling,spray-dryingandcalciningat8508CunderN2flow.TheLTO/CNTssampleswith1wt%and3wt%weightratioofCNTsadditionandthepristineLTOsampleareprepared.TherateperformanceandthethermalstabilityofthesesamplesareinvestigatedbasedonLiMn2O4（LMO）/LTOfull-cell.TheresultsshowthattheweightratioofCNTsadditionhasdistincteffectonLTOperformances.ThecompositematerialsofLTOcompositedCNTshavebetterperformanceathigh-rateduetotheintercalationenhancementbyconductivenetworkofCNTs.Atsecond,theoverchargingtemperatureresponseofthecell’ssurfacewith1wt%CNTsadditionisthelowest.Theparticlesizedistributionismeasuredandthemostuniformparticlesareobtainedwith1wt%CNTsaddition.ThistrendcouldexplainthatthemediumquantityofCNTsisoptimaltoimprovetheheatandmasstransferandpreventtheproblemsofcrystallitegrowinginterferenceandaggregationduringthecalcinationprocess.

简介：[Hmim]3PW12O40wasdevelopedandusedintheacetalizationofcarbonylcompoundsinexcellentyields.Theionicliquid-heteropolyacidhybridcompoundandreactionmediumformedtemperature-dependentphase-separationsystemwiththeeaseofproductaswellascatalystseparation.Thecatalystwasrecycledmorethan10timeswithoutanyapparentlossofcatalyticactivity.

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简介：Oximeswereoxidizedtothecorrespondingcarbonylcompoundsingoodtohighyieldsbyenvironmentallyfriendlyandgreenoxidant,H_2O_2catalyzedbymontmorilloniteK-10supportedcobalt(Ⅱ)chloride.

简介：Thethree-phasesbehaviorinthequaternarystsemofn-dodecylpolyglucosideC12G1.46/1-butanol/cyclohexane/waterhasbeenstudiedat40℃intermsofthevariablesγandδ.Increasingδatconstantγcausesaphaseinversionfromanoil-in-watermicroemulsionincontactwithexcessoil(winsorIor2)toawater-in-oilmicroemulsionincontactwithexcesswater(winsorⅡor2)viaamiddle-phasemicroemulsionincontactwithexcessoilandwater(winsorⅢor3).Bytakingintoaccountthedifferentsolubilitiesofalkylpolyglucosideand1-butanolintheoilphase,thecompositionofthehydrophile-lipophilebalancedinterfacialfilminthemiddleofthethree-phasebodycanbecalculated.Theeffectsofdifferentoilsandaqueousmediaonthephasebehaviorandonthecompositionoftheinterfacialfilmandtheefficiencyforalkylpolyglucosidetomakeequalweightsofwaterandoiltoasinglephasewereinvestigated.Itwasfoundthattheoilmoleculeswithsmallmolecularvolumescanimprovethesolubilizingefficiencyofthesurfactanttoformsingle-phasemicroemulsion.Ininorganicsalt(NaCl)andacid(HCl)solutions,less1-butanolisneededthanthatinalkali(NaOH)solutiontoformmiddle-phasemicroemulsion.

简介：ＩｎｔｒｏｄｕｃｔｉｏｎＡｃｏｎｓｉｄｅｒａｂｌｅｉｎｔｅｒｅｓｔｈａｓｂｅｅｎｓｈｏｗｎｉｎｔｈｅｉｎｖｅｓｔｉｇａｔｉｏｎｏｆｍｉｘｅｄ－ｄｏｎｏｒｍａｃｒｏｍｏｌｅｃ－ｕｌａｒｌｉｇａｎｄｓｃｏｍｐｌｅｘｉｎｇｔｒａｎｓｉｔｉｏｎｉｏｎｓ［１］...

简介：HeteroatomM-ZSM-12zeolites(M=B,Al,Ge,Ga,Fe)arehydrothermallysynthesizedanditisprovedthattheheteroatomMisinvolvedintheframeworkofsynthesizedmolecularsievesbymeansofXRD,IRspectra.TheresultsofadsorptionanddiffusionexperimentsindicatethattheheteroatomMmodifiestheporevolume,specificsurfacearea,andthechannelofZSM-12molecularsieves.

简介：ＡＣＩＤＩＴＹ　ＡＮＤ　ＣＡＴＡＬＹＴＩＣ　ＡＣＴＩＶＩＴＹ　ＯＦ　ＫＥＧＧＩＭ　ＳＴＲＵＣＴＵＲＥ　ＨＥＴＥＲＯＰＯＬＹＡＣＩＤＳ　──ＥＦＦＥＣＴ　ＯＦ　ＣＥＮＴＲＡＬ　ＡＴＯＭ　ＩＮ　Ｈ＿α　ＸＷ＿（１２）　Ｏ＿（４０）ＡＣＩＤＩＴＹＡＮＤＣＡ...

简介：采用密度泛函理论（DFT）的B3PW91方法,在混合基组水平上对Al掺杂Sn12-团簇几何结构和电子结构进行了计算分析.结果表明,Al内掺杂Sn12-团簇能量更低更稳定,但LU-MO-HOMO能隙较小.外掺杂多面体簇中,电荷从Al原子移向Sn12-笼,趋向形成[Al＋Sn122-]结构;内掺杂多面体簇中,电荷从Sn12-笼移向Al原子,趋向形成[Al-@Sn12]结构.

简介：对化合物[Na_2（H_2O）_（10）][Cu_4（H_2O）_（12）（H_2W_（12）O_（42））]·15H_2O（简称Na_2Cu_4W_（12））进行了体外抗肿瘤活性研究.应用四甲基偶氮唑盐（3-[4,5-dimethylthiazo-2-y]-2,5-diphenyltetrazoliumbromide,MTT）比色法分析Na_2Cu_4W_（12）对人肝癌细胞（HepG2）、人神经母细胞瘤细胞（SHY5Y）增殖抑制活性.采用光学显微镜观察肿瘤细胞的凋亡形态变化,用流式细胞术分析细胞周期和细胞凋亡,计算各期细胞比例及细胞凋亡率.结果表明,Na_2Cu_4W_（12）对HepG2和SHY5Y2种肿瘤细胞增殖半数抑制浓度IC_（50）值分别为5.3和10.2μmol·L~（-1）,且呈剂量依赖性.光学显微镜下处理组细胞出现皱缩、变圆、缩小等形态变化,不同浓度Na_2Cu_4W_（12）处理12h早期凋亡细胞所占的百分比显著增加且呈剂量依赖性.综上所述,Na_2Cu_4W_（12）能够抑制胞瘤细胞增殖,诱导细胞凋亡.

简介：将磷钼杂多酸聚吡咯（PMo12-PPY）用电聚合法沉积在载有多孔阳极氧化铝（AAO）的玻碳电极表面（AGCE）,制备了PMo12-PPY/AGCE纳米复合材料修饰电极,并通过循环伏安（CVs）、电化学阻抗谱（EIS）方法表征了PMo-PPY/AGCE和PMo-PPY/GCE的电化学性质及电极界面反应特征.结果表明,AAO膜使电极表面粗糙度降低,电子传输的能力增强,并使氧化还原反应速度加快.

简介：采用密度泛函理论方法(DFT)计算讨论了系列含苯咔唑基的碳硼烷衍生物的电子结构及其二阶非线性光学(NLO)性质.结果表明,化合物中共轭桥的长度对其偶极矩和极化率影响较小,而对其第一超极化率影响较大.随着分子共轭桥的增长,其二阶NLO响应逐渐增大.用氟取代碳硼烷的氢对邻位碳硼烷体系影响较大,氟代邻位碳硼烷体系的偶极矩、极化率和第一超极化率都有显著提升,其中氟代邻位碳硼烷分子的第一超极化率是未取代分子的8倍,因此氟代邻位碳硼烷可以有效地调节分子的二阶NLO响应.

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简介：Athree-dimensionalfew-layerreducedgrapheneoxide-wrappedmesoporousLi4Ti5O12（m-LTO@FLRGO）electrodeisproducedusingasimplesolutionfabricationprocess.WhentestedasananodeforLiionbatteries,them-LTO@FL-RGOcompositeexhibitsexcellentratecapabilityandsuperiorcyclelife.Thecapacityofm-LTO@FL-RGOreaches165.4mAhg-1after100cyclesbetween1and2.5Vatarateof1C.Evenatarateof30C,ahighdischargecapacityof115.1mAhg-1isstillobtained,whichisthreetimeshigherthanthepristinemesoporousLi4Ti5O12（m-LTO）.Thegraphenenanosheetsareincorporatedintothem-LTOmicrosphereshomogenously,whichprovideahighconductivenetworkforelectrontransportation.

简介：利用水热技术合成了一个以Keggin型多金属氧酸盐和柔性有机配体为建筑块的三维超分子化合物[H2bbi]3[α-PMo12O40]2（1）（bbi=1,4-双-（咪唑-1-基）丁烷）,用X-射线单晶衍射、元素分析、红外光谱和X-射线粉末衍射对晶体结构进行了表征.X-射线单晶衍射显示,该晶体属于三斜晶系,P-1空间群,a=1.18360（9）nm,b=1.20932（10）nm,c=1.77728（15）nm,α=74.0890（10）°,β=70.9490（10）°,γ=71.8160（10）°,V=2.2421（3）nm3,Z=2,Dc=3.109g/cm3,F（000）=2300,μ=3.39mm-1,S=1.047,R1=0.0350,wR2=0.0776[I〉2σ（I）].

简介：利用水热合成方法合成了1个新的Keggin基质的超分子化合物（H2bimb）2（SiW12O40）,并通过元素分析、红外光谱、热重分析和X射线单晶衍射方法确定了该化合物的晶体结构.结构分析表明该化合物属于三斜晶系,P-1空间群,晶胞参数a=1.1226（5）nm,b=1.5635（5）nm,c=1.8927（5）nm,α=90.957（5）°,β=93.269（5）°,γ=104.534（5）°,V=3.209（2）nm3,Z=2,R1=0.0679,ωR2=0.1712.