| Coordination polymer as a new type of metal-organic compound has been developed rapidly in the recent years due to their potential applications in catalyst,ion exchange,dye degradation,magnetism and gas storage.Moreover,the coordination polymers have been a hot research topic due to their sizes can be adjusted in the field of material chemistry.At present,there have been many attractive topology structures of coordination polymers in the previous reported.However,there are still many unkown fields in this aspect need to be explored.Aromatic carboxylic acid is a kind of common multifunctional ligand in construction of metal-organic frameworks of with variety site coordination models,and many different structures of coordination polymers can be designed.Aromatic carboxylic acid ligands with strong plane rigid,has the unique advantages in the control the process of building target structures,and target coordination compounds with high rigidity and good thermal stabilities.In this paper,the 4,4',4"-(1,3,5-triazine-2,4,6-triyl)tribenzoic acid and 1,4,5,8-Naphthalenetetracarboxylic dianhydride have been selected.The N-donor ligands with bridging abilities are also wide used in constructing metal-organic coordination polymers and supramolecular self-assembly chemistry by hydrogen bonding,?-? and intermolecular interactions.In this study,the bis-and tri-multidentates N-donor ligands are employed.In this paper,the 4,4',4"-(1,3,5-triazine-2,4,6-triyl)tribenzoic acid,1,4,5,8-Naphthal-enetetracarboxylic dianhydride and six N-donor neutral ligands of biim=1,1'-(1,4-butanediyl)bis(imidazole),Tipa=tris(4-(1H-imidazol-1-yl)phenyl)amine,o-bix=1,2-bis(imidazol-1-ylmethyl)-benzene),m-bix=1,3-bis(imidazol-1-ylmethyl)-benzene),p-bix=1,4-bis(imidazol-1-ylmethyl)-benzene),bid=1,10-bis-(imidazole-1-yl)decane))are selected as organic building units,the transition metal ions of Zn??Cd??Co??Mn?were selected as the inorganic building units to synthesize the metal-organic coordination polymers by adjusting the ratio of the solvent,temperature and reaction time.Finally,eleven metal-organic coordination polymers,namely[Cd(tatb)(biim)](1),[Cd(tatb)3(bid)](2),[Zn2(tatb)(o-bix)](3),[Co(tatb)(o-bix)](4),[Mn(tatb)(p-bix)](5),[Co(tatb)(m-bix)](6),[Co(tatb)(m-bix)](7),[Cd(tatb)(Tipa)](8),[Mn(tatb)(Tipa)(H2O)](9),[Cd(tcda)(Tipa)Cl](10),[Cd4(tcda)4(Tipa)2(H2O)](11)(H3tatb=4,4',4"-(1,3,5-triazine-2,4,6-triyl)tribenzoic acid,Ntcda=1,4,5,8-Naphthalenetetracarboxylic dianhydride,biim=1,1'-(1,4-butanediyl)bis(imidazole),Tipa=tris(4-(1H-imidazol-1-yl)phenyl)amine,o-bix=1,2-bis(imidazol-1-ylmethyl)-benzene),m-bix=1,3-bis(imidazol-1-ylmethyl)-benzene),p-bix=1,4-bis(imidazol-1-ylmethyl)-benzene),bid=1,10-bis-(imidazole-1-yl)decane))have been synthesized by solvent hydrothermal method.The compounds 1-11 have been characterised by X-ray diffractions,infrared spectroscopy and thermal gravity analyses.The dye absorption properties of 1-11 have been also investigated.The X-ray diffractions show that the compound 1 is a supermolecular 3D framework,the compound 2 is a 3D network with a 103 topology,the compound 3 is 2D+2D?2D layer framework,the compound 4 is 2D+2D?3D framework,the compound 5 is 2D+2D?3D framework,the compound 6 is a 1D chain framework,the compound 7 is a 2D layer framework,the compound 8 is a 3D two-fold interpenetrated network with(3,5)-connected(63·68·8·10)topology,the compound 9 is a two-fold interpenetrated 3D network with(3,5)-connected(52·6·53·6·74·8·9)topology,the compound 10 is 2D+2D?3D framework with a 63 topology,and the compound 11 is a 2D layer framework with(3,6)-connected(43·46·66·83)topology.The TG properties of compounds 1-9 have observed.Further,the absorption experiment demonstrated that the compounds 1-9 can absorb the CR with short time and high effectivity. |
PDF Full Text Request