Syntheses And Luminescent Properties Of Coordination Polymers Constructed Bythe Derivatives Of Calix[4]arene And Thiacalix[4]arene

In this paper,through different modification methods to p-tert-butylcalix[4]arene and p-tert-butythialcalix[4]arene,three ligands were obtained:H4L,L2 and L4.Further,six new coordination polymers were synthesized respectively using these ligands:{[Cd2L1(H2O)4]?Me OH?DMF}n(1),{[Mn2L1(H2O)3(Me O)]?(CH3)2NH2?3Me OH·H2O}n(2),{[Zn2L3Cl2]}n(3),{[Zn2L3(IPA)(H2O)]·2DMF·2Me OH·3H2O}n(4),{[Zn2(L4)Cl4]}n(5)and{[Zn2(L4)0.5(bpydc)2]}n(6)[H2IPA=isophthalicacid,H2bpydc=2,2'-bipyridine-4,4'-dicarboxylic acid].It's a remarkable fact that two bonds of L2 were broken during the solvothermal reaction,resulting in ligand H2L3.Among them,CP1,CP2and CP4 are two-dimensional planar structures,and CP3 and CP5 are one-dimensional chain structures,and CP6 is a three-dimensional structure.CP1,CP4 and CP6 exhibit excellent solid-state luminescence characteristics at RT.CP1 was selected to detect the anions and cations in the aqueous solution.Systemic luminescent sensing study reveals that CP1 displays high sensitiverecognition effects for Fe³⁺ion and MnO4^–anion.We selected CP4 to detect nitroarenes in the water,and experimental results show that CP4 has obvious responses to4-nitrophenol and 2,4-dinitrophenol the aqueous solution.Finally,we detect polyoxometalate anions in water by CP6.When[P₅W₃₀O₁₁₀]^14–and[P₂W₁₈O₆₂]^6–ions exist in the aqueous solution,CP6 will produce obvious luminescent quenching phenomenon.Through the research of CP1,CP4 and CP6,we found thatthese coordination polymers have potential application for fluorescence sensingand fluorescence detection.