基于羧酸配體的新型金屬有機骨架化合物的合成、表征、熒光性質及穩(wěn)定性研究.pdf

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3、tapplicationpotentialsinvariousfieldsincludinghydrogenstorageHowever，manyMOFmaterialsaresensitivetomoisturesintheair，andarenotsuitableforpracticaluseInchaptertwoof也isthesis1，4。phenylenediaceticacid(H2PDA)andtwocommonnitr

4、ogenligand44’bipyridyl(BIPY)or14di(pyridine一4y1)benzene(DPB)wereappliedasmixedligand，andfournovelcoordinationpolymers(Cu(HPDA)ffBIPY)1(1D)，Cu(PDA)(BIPY)2(H20)2(2D)，Cu2(PDA)2(DMF)2’2H203(2D)，Zn(PDA)(DPB)4(3D)andaknownMOFZ

5、n(PDA)5wereobtained1，2，and5arewaterstable3and4areairstableTheyareallmorestablethanMOF一5whichisbasedon14benzenedicarboxylicacid(H2BDC)5isbasedonfour—coordinatedZn(II)，andisverystabletowardsH20，whichiscontrarytothecommonvi

6、ewthat6coordiantedstructuresaremorestablethan4一coordinatedstructuresWefoundthatthewaterstabilitydependsonbondstrengthandalsobondpolarityIfthebondisnotverystrong，butquitepolar，itwillbemoresusceptibletotheattackofwaterthan

7、anotSOpolarbondTheeffectsofsyntheticconditionsonthestructuresofMOFswerestudiedAnionsofmetalsaltsandsolventpolaritywerefoundtohaveinfluenceonthestructureoftheproductsThepolarityofthesolventalsocontrolsthedegreeofdeprotona

8、tionofcarboxylicacidsThemolarratiosofthemetalionstoligandswerefoundlessimportantWedemonstratedthatbyreducingsolventpolarity，addingacidandternplatemoleculesorcoordinatingmolecules，singlecrystalsorlargesizeMOFscanbeobtaine

9、dThethermalstabilitiesof14andthefluorescencepropertiesof4werestudiedThisworkisbeneficialtosynthesizingwater。stableMOFsandgrowingsinglecrystalsInchapterthreeofthisthesis，wesynthesizedthreeknownMOFs(Zn2(FMA)2(BIPY)‘nDMF6Zn

10、2(BDC)2(BIPY)DMF7Zn3(BPDC)2(BIPY)3DMF’H208usingthreerigidearboxylicacids，fumaricacid(H2FMA)，1，4_benzenedicarboxylicacid(H2BDC)and14一biphenyldicarboxylicacid(H2BPDC)，4，4’bipyridyl(BIPY)andzinc(II)nitrateTheyareall2foldint