ZIF合成后的共價修飾-合成方法

高的熱穩(wěn)定性和化學穩(wěn)定性whichhaveunusualthermalandchemicalstability合成方法：1、將H-ICA和Zn(NO3)2?4H2O(3:2molratio)混合到DMF中，在100°C下加熱18h。2、將三乙胺和己烷的混合液溶解到H-ICA和Zn(NO3)2?4H2O的DMF溶液中，在25°C反應24h。AnewcrystallineZIFstructure(termedZIF-90,Figure1)wassynthesizedbyheatingasolutionmixtureofH-ICAandZn(NO3)2?4H2O(3:2molratio)inN,N-dimethylformamide(DMF)at100°Cfor18h.ThesamematerialcanalsobeobtainedbydiffusionofatriethylamineandhexanesolutionintoaDMFmixtureofH-ICAandZn(NO3)2?4H2Oat25°Cfor24h.ThisleadstoanexpandedZIFstructurewithlargevoids(Figure1B)andoanextended3-DZIFstructurewithanapertureof3.5Aindiameterandaporesizeof11.2A(XRD)活化：將晶體浸入甲醇，然后在真空(0.01托)下加熱至25C(24h)Solventguestsintheas-synthesizedformofZIF-90wereremovedby

firstimmersingthecrystalsinmethanolthenevacuating(0.01Torr)at25°Cfor24hcZIF-90Figure1.CrystalstructureofZIF-90presentedas(A)acZIF-90Figure1.CrystalstructureofZIF-90presentedas(A)anet(bluelineandbJackdotdrawing).(B)atilingtoshowthesubdivisionofspace(turquoisepolyhedra)inthesodalitetopology,and(C)acutawayviewofoneoftheZIFcageswithZnN4tetrahedrainpinkpolyhedraandtheICAlinksinball-and-stickrepresentation(C,black;Ntgreen;O.red).TheyellowballrepresentsthelargestspheretofitintheporouscagewithoutcontactingthevanderWaalsspheresoftheframework.Hatomshavebeenomittedforclarity.Scheme化TransformationofZIF-90(A)byReductionwithNaBH41andReactionwithEthanotamineToGiveZIF-91(B)andZIF-92(C)PAeQH,&QyHOH2NCH2CH2OH八PAeQH,&QyHOH2NCH2CH2OH八化學穩(wěn)定性的測量:在水、甲苯、甲醇中煮沸，測量其X線粉末衍射。thehighchemicalstabilityofZIF-90wasevidencedbytheunalteredpowderX-ra