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- Title
Cadmium(II)-Triazole Framework as a Luminescent Probe for Ca<sup>2+</sup> and Cyano Complexes.
- Authors
Wang, Ying; Xu, Ping; Xie, Qiong; Ma, Qing ‐ Qing; Meng, Yan ‐ Hui; Wang, Zi ‐ Wen; Zhang, Shaowei; Zhao, Xiao ‐ Jun; Chen, Jun; Wang, Zhong ‐ Liang
- Abstract
A bidentate ligand, 1-{4-[4-(1 H-1,2,4-triazol-1-yl)phenoxy]phenyl}-1 H-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.
- Subjects
CADMIUM; TRIAZOLES; CYANIDES; METAL-organic frameworks; CRYSTALS
- Publication
Chemistry - A European Journal, 2016, Vol 22, Issue 30, p10459
- ISSN
0947-6539
- Publication type
Article
- DOI
10.1002/chem.201600209