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1INTRODUCTIONCoppercomplexeshavealargevarietyofstericstructuresandplayanimportantroleincatalysingtheenzymaticactivities,which... 相似文献
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IntroductionYttriumtantalatescanexistinfourformsYTaO4,YTa7O19,Y3TaO7andYTa3O9,amongwhichyttriumorthotantalatehasrecievedmoreattention.RareearthorthotantalatesareakindofpromisinghostmaterialsfornewX-rayphosphorssincetheycontainelementsofhighatomicnumb… 相似文献
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ZHAO Bo a CAO Yang b LANG Jian Ping c 《结构化学》1999,18(5)
1 INTRODUCTIONCurrently,consistenteffortshavebeenmadetotheinvestigationoforganicnonlinearoptical(NLO)materials〔1〕.Someofcinnamylideneacetophenonederivativeshavefairlystrongsecondharmonicgeneration(SHG)andthereforearepotentialusefulinNLOfields.Durin… 相似文献
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1INTRODUCTION1,5 benzothiazepinesposespotentialbiologicalactivities〔1〕.CycloadditionreactionsattheirC=Ndoublebondhavearousedc... 相似文献
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1 INTRODUCTIONSolid stateboratesexhibitavarietyofphysicalandchemicalfeatures,rangingfromnonlinearopticalpropertiesof β BaB2 O4(β BBO) [1 ] tothecatalyticactivityofCu2 Al6B4O1 7[2 ] ,whichhaveattractedgreatattentionofmanyscientificresearchers.Aspartofourefforttosynt… 相似文献
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FENG Ji kang WANG Hai chuan WEI Jia you XIAO Chang yong XU Wen guo SUN Chia chung 《高等学校化学研究》1997,(1)
ATheoreticalStudyofNonlinearSecond┐OrderOpticalPropertiesofSubstitutedSilanes*SupportedbytheNationalNaturalScienceFoundationo... 相似文献
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1INTRODUCTIONMacrocyclicdioxotetramineswithvariousfunctionalpendantshavereceivedmuchat tention,theintroductionofvariousadditi... 相似文献
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StudiesofLaser-induced-MOCVDZincOxideFilmsRENPeng-cheng,TANZhong-keandLUOWen-xiu(CeiiterforFunctionalMaterialsResearch,Qingda... 相似文献
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Traditionally ,thehydrothermalsynthesisofti taniumsilicalite 1 (TS 1 )needsalargeamountoftetrapropylammoniumhydroxide (TPAOH)asatemplate ( n(TPAOH) n(SiO2 ) =0 4~ 1 0 ) ,andthecrystallizationtimetakes 10~ 30d[1] .Recently ,muchattentionhasbeenpaidtothemodificationofsynthesi… 相似文献
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Horseradishperoxidase(HRP)canstronglycatalyzethereactionofH2O2oxidizingophenylenediamine(OPD),thechromaticproductofwhichcanbedetectedinenzymelinkedimmunosorbentassay(ELISA)withspectrophotometry[1].Involtammetricenzymelinkedimmunoassay[2—4],OPDH2O2HRPsystemhasf… 相似文献
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1INTRODUCTIONMacrocyclicdioxotetramineswithvariousfunctionalpendantshavereceivedmuchattention,theintroductionofvariousadditi... 相似文献
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IntroductionThediscoveryofthesuperconductivityoftheBa-La-Cu-Osystemathightemperatureshasgreatlystimulatedtheinvestigationofcuprates[1].Cuprateshavebeenfoundtobeactivecatalystsforseveralreactions,includingthereductionanddecompositionofN2O,NOandNO2,the… 相似文献
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1INTRODUCTION1,5benzothiazepinesposespotentialbiologicalactivities〔1〕.CycloadditionreactionsattheirC=Ndoublebondhavearousedc... 相似文献
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Synthesis and characterization of thermally crosslinked polyimide with second-order nonlinear optical chromophore 总被引:2,自引:0,他引:2
Incomparisonwithinorganicnonlinearoptic(NLO)materials,organicpolymericNLOmaterialshavemanyadvantages,suchasliablemoleculardesignandoptimization,largernonresonanceNLOcoefficiency,lowerdielectricconstant,goodworkingability,opticaltransparencyandresistancea… 相似文献
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《中国化学快报》1996,(10)
Co ̄ndenceauthor.Oaf((k6<l)adspeciesPeakswerefoundtodisappearat573'K.Duringthetemperatureelevation,theCeOZFZgandO2-Peakswerefoundtobroadenandshifttolowerwavenumbers.ThefhaluencyshiftwilhresecttotemperatureisawellknownphenomenoninRamanspectroscopyofsolidsanditisrelatedtothetherma]expansionoflatticeparameters.At1023'K,theO2-adspecies(at1159cm-l)andCeOZF2,(at449cm-l)peakswerefoundtoremainexistingonthesurfaceofceriumoalde.WhentheOZ-pretreatedCeOZsamplewaswarmedsuccessivelyinaflowofCd,thereachonsofCabwithlaniceo 相似文献
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1INTRODUCTIONEventhoughthestructureofparadodecatungstatepolyanion,〔H2W12O42〕10-,(Paradodecatungstate B)hasbenverywelestablish... 相似文献
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TheN2Omoleculeplaysaveryimportantroleinozonechemistryintheatomosphere.Itsrovibrationalspectracanprovideusefulinformationabouttheintramoleculardynamicproperties.N2Oisalinearmoleculeattheequilibriumgeometryfortheelectronicgroundstate.Numerousinvestigatio… 相似文献
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EffectofSubstitutingGroupontheCalculatedNonlinearSecond-OrderOpticalSusceptibilitiesofSubstitutedThiopheneDerivativeswithQuin... 相似文献