Abstract
Two novel two-dimensional Ln coordination polymers (CPs) [Ln3 (μ3-OH)(IN)3(HIDA) (IDA)2]n (Ln = Eu, 1; Sm, 2; HIN = isonicotinic acid, and H2IDA = iminodiacetic acid) have been successfully synthesized under solvothermal conditions and characterized by IR, TG, and elemental analyses. The structures of 1 and 2 were determined by single-crystal X-ray structural analysis, which shows that LnIII ions interconnect through HIN and H2IDA molecules to generate a 1D chain, and the adjacent chains are joined together by the same form to form the 2D zonary plane of 1 and 2. Meanwhile, We also studied luminescence properties of 1 and 2. The luminescence lifetime and quantum yield of 1 are 1.32 ms and 25.30%, which are significantly longer and higher than the values obtained for reported Eu3+ coordination polymers in the solid state at room temperature.
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