Cadmium(II)-Triazole Framework as a Luminescent Probe for Ca(2+) and Cyano Complexes.
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 H2 O and CdCl2 ⋅10.5 H2 O, novel 1D double-chain {[Cd(TPPT)(NO3 )2 ]⋅3 H2 O}n (1) and 2D (4,4) layer [Cd(TPPT)Cl2 (H2 O)]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 /C2 H5 OH/H2 O containing NaBr, NaI⋅2 H2 O, or NaOAc⋅3 H2 O, the crystals retained their crystalline appearances. A remarkable single crystal to single crystal transformation was observed and 1D double chains of {[Cd(TPPT)Br2 ]⋅C2 H5 OH}n (2 a) and {[Cd(TPPT)2 I2 ]⋅CHCl3 }n (2 b), and 1D single chains of [Cd(TPPT)(H2 O)2 (CH3 COO)2 ]n (2 c), can be obtained. Luminescent properties indicate that 1 shows excellent selectivity for Ca(2+) and cyano complexes. To the best of our knowledge, this is the first example of a luminescent probe for Ca(2+) based on triazole derivatives.
Key Laboratory of Inorganic-Organic, Hybrid Functional Material Chemistry, Ministry of Education, College of Chemistry, Tianjin Normal University, Tianjin, 300387, P.R. China. wangying790601@163.com.|Key Laboratory of Advanced Energy Materials Chemistry, Ministry of Education, Nankai University, Tianjin, 300071, P.R. China. wangying790601@163.com.
Ying
Y
Wang
Key Laboratory of Inorganic-Organic, Hybrid Functional Material Chemistry, Ministry of Education, College of Chemistry, Tianjin Normal University, Tianjin, 300387, P.R. China.
Ping
P
Xu
Key Laboratory of Inorganic-Organic, Hybrid Functional Material Chemistry, Ministry of Education, College of Chemistry, Tianjin Normal University, Tianjin, 300387, P.R. China.
Qiong
Q
Xie
Key Laboratory of Inorganic-Organic, Hybrid Functional Material Chemistry, Ministry of Education, College of Chemistry, Tianjin Normal University, Tianjin, 300387, P.R. China.
Qing-Qing
QQ
Ma
Key Laboratory of Inorganic-Organic, Hybrid Functional Material Chemistry, Ministry of Education, College of Chemistry, Tianjin Normal University, Tianjin, 300387, P.R. China.
Yan-Hui
YH
Meng
Key Laboratory of Inorganic-Organic, Hybrid Functional Material Chemistry, Ministry of Education, College of Chemistry, Tianjin Normal University, Tianjin, 300387, P.R. China.
Zi-Wen
ZW
Wang
Key Laboratory of Theoretical Organic Chemistry, and Functional Molecule of the Ministry of Education, School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan, 411201, P.R. China. swzhang@hnust.edu.cn.|Key Laboratory of Advanced Energy Materials Chemistry, Ministry of Education, Nankai University, Tianjin, 300071, P.R. China. swzhang@hnust.edu.cn.
Shaowei
S
Zhang
Key Laboratory of Inorganic-Organic, Hybrid Functional Material Chemistry, Ministry of Education, College of Chemistry, Tianjin Normal University, Tianjin, 300387, P.R. China. hxxyzxj@mail.tjnu.edu.cn.
Xiao-Jun
XJ
Zhao
Key Laboratory of Advanced Energy Materials Chemistry, Ministry of Education, Nankai University, Tianjin, 300071, P.R. China. chenabc@nankai.edu.cn.
Jun
J
Chen
Tianjin Key Laboratory of Water Resources and Environment, Tianjin Normal University, Tianjin, 300387, P.R. China. zhongliang_wang@163.com.
Zhong-Liang
ZL
Wang
crystal growth; fluorescence; metal-organic frameworks; self-assembly; sensors