Chinese Journal of Applied Chemistry ›› 2017, Vol. 34 ›› Issue (9): 1052-1058.DOI: 10.11944/j.issn.1000-0518.2017.09.170170

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Cu(Ⅰ) Phosphorescence Doping of Zeolitic Zinc-Imidazolate Framework MAF-6

ZHANG Xuefeng,XU Yantong,LIU Siyang,YE Jiawen,ZHANG Jiepeng()   

  1. MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry,Sun Yat-Sen University,Guangzhou 510275,China
  • Received:2017-05-23 Accepted:2017-06-17 Published:2017-08-31 Online:2017-08-31
  • Contact: ZHANG Jiepeng
  • Supported by:
    Supported by the National Natural Science Foundation of China(No.91622109), Natural Science Foundation of Guangdong(No.S2012030006240)

Abstract:

For luminescence sensing, Cu(Ⅰ)-based coordination complexes have unique advantages such as low cost and long luminescence lifetime. However, Cu(Ⅰ) coordination complexes are generally unstable in air, easily oxidized by oxygen, or quite difficult to form porous frameworks. Among various zeolitic zinc-imidazolate porous coordination polymers, RHO-[Zn(eim)2] (MAF-6, Heim=2-ethylimidazole) has received considerable interest due to its large pore size and superior hydrophobicity. In this paper, by virtue of the similar coordination behaviors of Cu(Ⅰ) and Zn(Ⅱ) ions, an isomorphic phosphorescent porous coordination polymer, Cu:MAF-6, was obtained through partial substituting Zn(Ⅱ) ions of MAF-6 with Cu(Ⅰ) ions. The phosphorescence of Cu:MAF-6 exhibits very high oxygen sensitivity(Ksv=28.09 kPa-1; limit of detection=0.36 Pa) in the low oxygen concentration environment(<600 Pa).

Key words: copper(Ⅰ), oxygen sensing, zeolite, imidazole, porous coordination polymer, metal-organic framework