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IntroductionAggregationisacommonphenomenonformanysim pleorganicmoleculesaswellascomplexmoleculeswithimportantbiologicalactivity .Formationofaggregatesmaybedrivenbydifferentnon covalentinteractions ,suchashydrogenbonding ,1electrostaticinteraction ,2 orhy dr… 相似文献
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Introduction Non covalentinteractionshaveabiginfluenceontheconformationalorganizationofthebiomoleculeswhichisresponsiblefortheregio andstereo specificityofvariousbiologicalprocesses .1Amongtheseinteractions ,thein tramolecularstackinginteractionbetweens… 相似文献
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IntroductionCyclicpeptides ,whichareconstrainedconforma tionallyandmoreresistanttoproteasedigestionsthantheirlinearprecursors ,havebeenofgreatinterestassynthetictargetsbothaspotentialdrugleadsandasmodelsforcon formationalanalysis .1 4 Currentmethodsforsynt… 相似文献
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IntroductionThekineticfeatureofligandinteractionswithmacro moleculeplaysasignificantroleinbiologicalregula tion .1,2 Multisubunitproteinssuchashumanhemoglobinfrequentlyexhibitcooperativity ,3 6whicharisesfromacouplingbetweentheeffectsofligandbindingatthein… 相似文献
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Silyleneisthesimilarityofsilicontocarbene,and,likecarbeneinorganicreactions,itplaysaveryimportantroleinorganosiliconreactions.Inrecentyears,therehavebeenmanyreportsonsilylenesinquantumchemicalresearches[1—3].Investigationonitsorganicreactionshowsthatreali… 相似文献
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IntroductionFreeradicalformationfromhalogenatedhydrocarbonshasreceivedconsiderableattentionbecauseofitsscientif icandenvironmentalrelevance .1 6 Thisreactionseemstoplayanimportantroleinvariousprocesses .Bond break ingreactionisapowerfulsynthetictooltoprov… 相似文献
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JIAO Qing ze ZHAO Yun LI Xiao dan EVANS D. G. DUAN Xue * Key Laboratory of Science Technology of Controllable Chemical Reactions Ministry of Education Beijing University of Chemical Technology Beijing P. R. China 《高等学校化学研究》2002,18(2)
IntroductionGlycolethersareimportantindustrialderivativesofepoxides .Polyethylene glycolethylethersandpolypropyleneglycolethylethersaretwoimportantseriesofproducts .Glycolethersaregoodsolventsduetothepresenceof—O—and—OH groups.Asare sult ,theyarewidelyuse… 相似文献
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Phycobiliproteinsarethelightharvestingpigmentsforphotosynthesisinalgaeandincludephycoerythrin,phycocyaninandallophycocyanin.Inredandbluealgae,differentkindsofphycobiliproteinsaswellaslinkerpolypeptidesformawellorgnizedsystemwithefficientfunctionsoflig… 相似文献
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IntroductionOwingtotheformationofstableanddeeplycoloredcomplexeswithheavymetalions(suchaslead(Ⅱ)etc),theferrocenylaroylhydrazonesarenotonlypotentiallyusefulasspe-cificreagentsinanalyticalandextractivechemistry[1]butalsostronglyactivebiologically,andc… 相似文献
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IntroductionAntimony freePb Caalloyshavecommonlybeenusedinthemanufactureofgridsinordertominimizegassingineitherlow maintenanceorvalve regulatedleadacidbatteries .However ,thesealloyscancauseotherproblemssuchasprematurecapacityloss ,lowcharge ac ceptanceand… 相似文献
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IntroductionCopper(Ⅱ)complexeswithorganicacidsandotherdonorligandsexistextensivelywithinhumanbodies,andplayanimportantroleinavastrangeofchemicalandbiochemicalcatalyticsystems[1].Muchattentionhasbeenpaidtowhattheymayrevealtothestructuresandtheprobable… 相似文献
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IntroductionComputersimulationapproacheshavebeenprovedtobepowerfultoolstodetermineandcharacterizedynamicsofproteinsandnucleic... 相似文献
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Inrecentyearstherehasbeeninterestinthepropertiesofenzymes[1,2]inorganicsolvents.Anumberofadvantageshavebeenreportedforenzymes’catalysisinorganicsolvent:enzymeshavebeenreportedtobemorethermostableinorganicsolvent,tocatalyzethereactionswhicharekineticallyo… 相似文献
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IntroductionSinceSchifbaseanditsmetalcomplexesareofantibacterialandanticancerbioactivities,theyhavebeenaresearchsubjectofmuch... 相似文献
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IntroductionOrderedfilmsofwater insolublesurfactantscanbepreparedbycastingtheirsolutionsordispersionsontoasolidsupport .1Evaporationofthesolventaftercastingleavesthinfilmself assembledintoorderedstackofbi layer ,whichissimilartobiologicalmembraneformedby… 相似文献
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Synthesis and Structure of Inclusion Complex of Cyclomaltoheptaose(β—Cyclodextrin)with m—Aminophenol
IntroductionSupramoleculeisakindofsystemwithspecialstruc turedependingontheweakmolecularinteractions (suchasvanderWaals ,hydrogenbond ,electrostaticandhy drophobicinteractions) .Theweakinteractionsarerelatedtobiologicalprocesses ,forexample ,thecatalyticrea… 相似文献
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IntroductionAmongtheinteractionsbetweenporphyrinsandfunctionalmoleculessuchasaminoacids ,ubiquinoneplaysimportantbiologicalfunctions .Themolecularrecognitionofaminoacidsandtheirderivativesisanimportanttopicforbothunderstandingthemechanismofaminoacyl tr… 相似文献
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IntroductionMicellarelectrokineticchromatography (MEKC)wasinventedtoextendtheutilityofcapillaryelectrophoresis(CE)andpermittedtheseparationandanalysisofneutralcompounds .ButjustlikeothermodesofCE ,MEKCarehamperedbythelowconcentrationsensitivityoftheultra … 相似文献
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Wenfeng Lin ** Jiamei Jin Paul A. ChristensenDepartment of Chemistry Bedson Building The University Newcastle upon Tyne NE RU UK 《高等学校化学研究》2002,(2)
IntroductionTheelectrochemicaloxidationofsmall,oxy genatedorganicmoleculeson platinumandrelatedelectrodematerialshasbeenextensivelystudiedoverthepastthreedecades ,mainlyinsupportoffuelcellresearches[1— 4 ] .Thesereactionsarecomplicated ,asseveralelementarys… 相似文献