Two alkynyl functionalized Co(Ⅱ)-MOFs as fluorescent sensors exhibiting selectivity and sensitivity for Fe3+ and nitroaromatic compounds

作者：Yue Li; Xia Wang; Chengyong Xing; Xiurong Zhang; Zelong Liang; Xiaokang Wang; Kai Zhang; Yutong Wang; Di Liu; Weidong Fan^*; Fangna Dai^*

来源：Chinese Chemical Letters, 2019, 30(07): 1440-1444.

Two Co(Ⅱ)-MOFs with diffe re nt structures were successfully synthesized under the pre mise of designing two ligands containing alkynyl functional groups.Complexes 1([Co(TEPA)(TPT)2/3].2 DMF.H2 O)and 2([Co(EPA)(TPT)]·1.5 DMF-1.5 H2 O)show excellent luminescence properties.Meanwhile,as fluorescent sensors,complexes 1 and 2 exhibit selectivity and sensitivity for Fe3+with the Ksv of 1.520 × 104 L/mol and3.543 × 104 L/mol,which can rapidly detect nitroaromatic compounds in methanol and ethanol,especially for 2,4-NPH through fluo rescence que nching with high quenching efficiency.In particula r,the Ksv value of complexes 1 and 2 towards 2,4-NPH can reach up to 1.627 × 105 L/mol and 9.600 × 104 L/mol,demonstrating that complexes 1 and 2 are good candidates for the identification and detection of Fe3+and nitroaromatic compounds.

• 单位
  中国石油大学（华东）; 山东科技大学