| In this work,by using piperazine/morpholine as organic ligands,such as1-(2-[1,2,4]triazole-4-ethyl)piperazine(tep),4-(2-[1,2,3]triazole-4-ethyl)morph-oline(tem)and 4-(2-[1,2,4]triazole-4-propyl)morpholine(tpm),thirteen comp-ounds with different polyoxometalates were synthesized under hydrothermal conditions through changing reaction conditions.In terms of characterization,IR,PXRD and EDS are mainly used;in terms of properties,the magnetic,electrochemical,fluorescence sensing and photocatalytic properties of these compounds were tested.1.Using the organic molecule 1-(2-[1,2,4]triazole-4-ethyl)piperazine(tep)containing triazole and piperazine groups as a ligand and Cu,Co,Zn transition metals to modify polyoxometalate compounds,compounds 1-5 were successfully synthesized.1 and 2 have supramolecular 2D layer structures.There is no transition metals for construction of 3,in which the N donor of ligand to link polyoxoanions through Mo-N bonds,forming a supramolecular 1D chain structure.4 exhibits a 3D topological grid structure and 5 has a 2D layer structure.Compounds 1-5 show good photocatalytic properties for degradation of organic dye MB and own good electrochemical properties as ampere sensors to detect NO2-.[ZnII(tep)2]2[HPMo12O40]2(1)[CuII(tep)][HCr(OH)6Mo6O18]·H2O(2)(tep)2[H4(?-Mo8O26)](3)[CoII(tep)2][H4(?-Mo8O26)](4)[ZnII(tep)2(H2O)][H2(?-Mo8O26)]·H2O(5)tep=1-(2-[1,2,4]triazole-4-ethyl)piperazine2.Using the organic molecule 4-(2-[1,2,3]triazole-4-ethyl)morpholine(tem)containing triazole and morpholine groups as a ligand to modify polyoxometalate compounds with transition metals,compounds 6-11 were successfully synthesized.Among them,6 is a 1D supramolecular chain.7 has a 2D supramolecular layer structure.8 forms a 3D structure through dinuclear silver clusters.9-11 are isostructural compounds showing 3D structures.6-11 can selectively degrade organic dye MB,and their electrochemical properties have also been studied.6-11as ampere sensors show good current response.Compound 6 has fluorescence sensing property to Hg2+ions.[Ag2I(tem)4][H2PW12O40]2·2H2O(6)[ZnII(tem)2]2[HPMo12O40]2(7)[Ag2I(tem)2][H2(?-Mo8O26)]·H2O(8)[CuII(tem)2][H2(?-Mo8O26)](9)[CoII(tem)2][H2(?-Mo8O26)](10)[ZnII(tem)2][H2(?-Mo8O26)](11)tem=4-(2-[1,2,3]triazole-4-ethyl)morpholine3.Using the organic molecule 4-(2-[1,2,4]triazole-4-propyl)morpholine(tpm)containing triazole and morpholine groups as ligand,and transition metals to modify homopolymolybdates,two isomorphic compounds 12-13 were successfully synthesized.Although both the ligands tpm and tem contain triazole and morpholine groups,the alkyl chains between these groups are different,-(CH2)2-in tem and-(CH2)3-in tpm.Both 12 and 13 are 3D mesh topologies.[CuII(tpm)2][H2(?-Mo8O26)](12)[CoII(tpm)2][H2(?-Mo8O26)](13)tpm=4-(2-[1,2,4]triazole-4-propyl)morpholine... |
PDF Full Text Request