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IntroductionInthepastdecades ,considerableresearchworkhasbeenfocusedonthefluorinatedionomers1 4 whichhaveexceptionalthermalandchemicalstabilities .5Thereforetheyhaveshownspecialapplications ,suchasmembraneseparationintheelectrochemicalprocessesandsuperaci… 相似文献
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IntroductionIsonitrosoketonesandrelatedligandssuchasni trosophenolesareusedasanalyticalreagents .1Complexesofcobaltmetals2 ,3withisonitrosoketoneiminesarerelevanttothechemistryandbiochemistryofthevitaminB12 coen zymes .Isonitroso(oximino)groupofthoseligandsc… 相似文献
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IntroductionFrontalchromatography (FC) ,anoldbranchinliquidchromatography (LC) ,1hasbeensuccessfullyem ployedinthesolutionofmanytheoreticalaswellasap pliedproblems—suchasmeasuringbindingconstantbe tweencomponents2 andkineticparametersofchemicalreactions ,3 ads… 相似文献
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E mail:zhenchuc@mail.hz .zj.cnThechemistryoforganoseleniumcompoundshasbeengrowinginrecentyears ,becauseofthemanysyn theticapplicationsoforganoseleniumcompounds .1Alotofmethodsforthesynthesisofselenideshavebeenreport ed ,2a isuchasthereactionoflithiummethylsel… 相似文献
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SynthesisandStructureof 1-Cyclopentylindenyl Lanthanide(II) Complexes and Their Catalytic Behavior for Polymerization of Acrylonitrile 总被引:3,自引:0,他引:3
IntroductionGreatprogresshasbeenmadeinthechemistryofdi valentorganolanthanidecomplexes .Avarietyofnewclassesofcomplexeshavebeensynthesizedandwidelyusedinorganicsynthesisandpolymerchemistry .1 6 Itwasnoticedthatmostoftheworkpublishedisfocusedonthecomplexe… 相似文献
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Analysis of PAHs in air-borne particulates in Hong Kong City by heuristic evolving latent projections 总被引:3,自引:0,他引:3
Theanalysisofunknowncomplexrealsamples,suchasbiologicalproducts,naturalmedicines,environmentalsamples,etc.,playsanimportantroleinbiochemistry,pharmaceuticalchemistry,environmentalchemistryandotherfields.Ithasbecomeoneofthehotspotsanddifficultpointsinmode… 相似文献
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IntroductionReducedheteropolyanions(heteropolyblue)areofcontinuinginterestinsomeimpor-tantareasofchemistry,suchasanalyticalan... 相似文献
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IntroductionLithiumionconductorsarepromisingmaterialsformanykindsofelectrochemicalapplication ,suchaselec trolytesforhigh energydensitybatteries .1Thepropertiesofhighionicconductivity ,highdecompositionpotential,stabilityandcompatibilityagainstelectrodess… 相似文献
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Theformationofmanycomplexesoccurinthesolutiontostudytheinteractionbetweenthesoluteandsolventmoleculeisinterestingnotonlyforthesolutionchemistrybutalsoforthecoor-dinationchemistryoftheelements.Becausetheinorganicsaltsofsomemaingroupelementssuchasantim… 相似文献
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1 INTRODUCTIONCertaincoppercomplexeshavebeenshowntohaveunusualchemicalpropertiessuchasoxygentransfer,oxidativeadditionandhomogenouscatalytichydrogenation[1].Oxidativeadditionreactionsarekeystepsintheactivationofσbondsinagreatnumberofcatalyticprocess.Cop… 相似文献
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IntroductionMolecularpolymerswithonedimensionalormulti dimensionalstructureassembledthroughhydrogenbondsisanimportantresearchcontentinthesupra molecularchemistryandcrystalengineering .1,2 Withthedevelop mentofnewtypefunctionalmaterialssuchasmolecularmagn… 相似文献
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L. X. Yang *Department of Chemical Processing Engineering University of Newcastle Merz Court Newcastle upon Tyne NE RUJ. P. G. FarrSchool of Metallurgy Materials The University of Birmingham Edgbaston Birmingham B TT UK 《高等学校化学研究》2002,18(2):133-138
IntroductionThereactionofchlorineevolutionisoneofthemostsignificantareasunderinvestigationinthefieldofelectrocatalysisduetoitsdirectimpactinelectro chemicaltechnology .Historically ,theconsumablean odessuchasgraphite ,sinteredFe3O4 orPbO2 activat edgraphite… 相似文献
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IntroductionRecently ,theBaylis Hillmanreactionhasbecomeaveryhotfieldforsyntheticchemists ,1 12 witharecentexampleofacatalyticasymmetricversion .13 IthasbeendisclosedthatthecombinationofaLewisbasesuchaschalcogenides ,amines ,phosphinesorquaternaryammo niumhali… 相似文献
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1 INTRODUCTIONTheinvestigationofthestructuresoforganolanthanidecomplexeshasbeenofinterestformanyyearsbecauseitisimportanttointerpretthebondnatureandchemicalpropertiesofthesecomplexes〔1〕.Crystalstructuresoftris(indenyl)lanthanidecomplexes,suchas(C9H… 相似文献
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1 INTRODUCTIONInrecentyears ,triazolo[3,4, b] 1 ,3,4 thiadiazolederivativeshavebeenat tractingmuchattentionfromchemistsandpharmacologistsbecausetheyshowbroadspectraofbiologicalactivities,suchasinsecticidal[1 ] ,antifungal[2 ] ,herbicidal[3] ,an tibacterial[4] ,hypotensiv… 相似文献
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β (1→ 3) Linkedglucansoccurinavarietyofbio logicallyimportantnaturalproducts ,suchasantitumorschizophyllan ,sceroglucanandlentinan ,1whileα (1→3) linkedglucansexistinsomemedicallyimportantfungisuchasCryphonectriniparasiticaandGanodermalu cidum .2 Forastudyonthe… 相似文献
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ExtensivestudiesofradiationorchemicalinjuryofbiologicaltargetmoleculesdemonstratethatOHradical,themostreactiveoxygenspecies,reactswithbiologicalmacromolecules,suchasDNA,inducingbasealterations,basicsites,andstrandbreaks,resultedinvariouspathogenesis,such… 相似文献
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IntroductionOwingtotheformationofstableanddeeplycoloredcomplexeswithheavymetalions(suchaslead(Ⅱ)etc),theferrocenylaroylhydrazonesarenotonlypotentiallyusefulasspe-cificreagentsinanalyticalandextractivechemistry[1]butalsostronglyactivebiologically,andc… 相似文献