Abstract: A series of IRMOF3-M_sal(M=Mg, Zn, Co, Cd, Ni, Eu, Nd, Pr and Tb) was prepared via capturing the metal ions by IRMOF3-sal prepared by postsynthetic modification(PSM) of the isoreticular metal-organic framework(IRMOF-3). We hope it can provide a new approach for the design and preparation of fluorescent porous metal organic frameworks(MOFs). An isoreticular metal-organic framework(IRMOF-3) modified with salicylaldehyde(sal) by postsynthetic modification(PSM) capturing metal ions to yield IRMOF3-M_sal(M=Mg, Zn, Co, Cd, Ni, Eu, Nd, Pr, Tb). Their structures were characterized by IR spectra, elemental analysis and  powder X-ray diffraction(XRD). The measurement and analysis of fluorescence spectra indicate that the emission peak of IRMOF3-M_sal is blue-shift and IRMOF3-Mg_sal displays the strongest relative fluorescence intensity.

Key words: Postsynthetic modification; , Metal-organic framework; , Fluorescence intensity