Abstract
Based on H4TPTC and 1,2-bimb/1,3-bimb ligands, four novel complexes, namely, {[Cu(TPTC)(1,2-bimb)2]·4.5(H2O)}n (1), [Cu(TPTC)0.5(1,3-bimb)]n (2), {[Eu2(TPTC)1.5(H2O)4]·4.5(H2O)·2(1,4–DOX)}n (3) and {[Ce(TPTC)(H2O)4]·0.5(H2O)·0.5(1,4–DOX)}n (4) have been constructed under solvothermal conditions [H4TPTC = terphenyl-3,3″,5,5″-tetracarboxylic acid, 1,3-bimb = 1,3-bis (imidazol-1-ylmethyl) benzene, 1,2-bimb = 1,2-bis (imidazol-1-ylmethyl) benzene]. Complexes 1 and 2 are 4-connected 2D networks with the topological types of sql (1) and kgm (2). Complex 3 exhibits a 4, 4, 12-connected network with the point symbol of {432.634}{44.62}{46}2. Complex 4 presents a 3D supramolecular network through hydrogen bonds. The fluorescent properties of complexes 1 and 3 showed that 1 has good fluorescence sensitivity for Cr2O72− and Fe3+ ions in aqueous solutions, and 3 can selectively detect NDVs. Furthermore, possible mechanism for luminescence quenching was also investigated.
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