Cadmium(II)-Triazole Framework as a Luminescent Probe for Ca2+ and Cyano Complexes
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- 作者：Prof. Ying Wang ; Ping Xu ; Qiong Xie ; Qing-Qing Ma ; Yan-Hui Meng ; Dr. Zi-Wen Wang ; Dr. Shaowei Zhang ; Prof. Dr. Xiao-Jun Zhao ; Prof. Dr. Jun Chen and Prof. Dr. Zhong-Liang Wang
- 刊名：Chemistry - A European Journal
- 出版年：2016
- 出版时间：July 18, 2016
- 年：2016
- 卷：22
- 期：30
- 页码：10459-10474
- 全文大小：5409K
- ISSN：1521-3765
文摘
A bidentate ligand, 1-{4-[4-(1H-1,2,4-triazol-1-yl)phenoxy]phenyl}-1H-1,2,4-triazole (TPPT), has been designed and synthesized. By using TPPT as a building block for self-assembly with Cd(NO3)2⋅4 H2O and CdCl2⋅10.5 H2O, novel 1D double-chain {[Cd(TPPT)(NO3)2]⋅3 H2O}n (1) and 2D (4,4) layer [Cd(TPPT)Cl2(H2O)]n (2) have been constructed. When 1 was employed as a precursor and exposed to DMF or N,N′-dimethylacetamide (DMAC), the crystals of 1 dissolved and reassembled into two types of brown block-shaped crystals of 1D double chains: {[Cd(TPPT)2(NO3)2]⋅DMF}n (1 a) and {[Cd(TPPT)2(NO3)2]⋅DMAC}n (1 b). The anion-exchange reactions of complex 2 have also been investigated. After gently stirring crystals of 2 in CHCl3/C2H5OH/H2O containing NaBr, NaI⋅2 H2O, or NaOAc⋅3 H2O, the crystals retained their crystalline appearances. A remarkable single crystal to single crystal transformation was observed and 1D double chains of {[Cd(TPPT)Br2]⋅C2H5OH}n (2 a) and {[Cd(TPPT)2I2]⋅CHCl3}n (2 b), and 1D single chains of [Cd(TPPT)(H2O)2(CH3COO)2]n (2 c), can be obtained. Luminescent properties indicate that 1 shows excellent selectivity for Ca2+ and cyano complexes. To the best of our knowledge, this is the first example of a luminescent probe for Ca2+ based on triazole derivatives.