Chinese Journal of Applied Chemistry ›› 2017, Vol. 34 ›› Issue (9): 1035-1045.DOI: 10.11944/j.issn.1000-0518.2017.09.170180

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Solvent-Dependent Synthesis and Fluorescent Properties of Cu(Ⅱ) Metal-Organic Frameworks

WANG Yutonga,FAN Weidonga,XIAO Zhenyua,HUANG Zhaodia,XU Lina,ZHANG Lianglianga,XING Lixueb,DAI Fangnaa*(),SUN Daofenga*()   

  1. aChina University of Petroleum(East China),Qingdao,Shandong 266580,China
    bHuangdao Entry -Exit Inspection and Quarantine Bureau,Qingdao,Shandong 266555,China
  • Received:2017-05-26 Accepted:2017-06-23 Published:2017-08-31 Online:2017-08-31
  • Contact: DAI Fangna,SUN Daofeng
  • Supported by:
    Supported by the National Natural Science Foundation of China(No.21571187)

Abstract:

Metal-organic frameworks have promising potentials of for applications in the areas of fluorescence recognition. To explore more accurate identification of synthetic substancess, we synthesized two copper metal-organic frameworks(MOFs), {[Cu(PAIA)(H2O)]·2H2O}(1) and {[Cu3(PAIA)2(DMSO)(Pyridine)1.5]}(2)(H2PAIA=5-(propionyl-λ2-azanyl)isophthalic acid; DMSO=dimethyl sulphoxide), by the solvothermal reaction in the presence of H2PAIA under different solvents(H2O and DMSO/H2O). Synthetic investigations and structural analyses reveal that both MOFs show distinct frameworks with remarkable solvent-directed feature, although they are assembled from the same starting materials, i.e., Cu(NO3)2·3H2O with H2PAIA for complexes 1 and 2. The topological structures and fluorescent properties of the two coordination compounds show a significant difference. Complex 1 is a three-dimensional NbO-type topology, while the complex 2 is a two-dimensional sql-type topology. Complex 1 exhibits fluorescent recognition to both Pb2+ and Ag+ ions, while complex 2 exhibits fluorescent recognition of Pb2+ ion. The water contact angle for complex 1 is 85.06°, while the water contact angle for complex 2 is 52.71°.

Key words: solvent control, metal-organic frameworks, topology analysis, fluorescence properties, hydrophobic properties