Two porphyrin-based coordination frameworks,[Ag_(2)(TPyP)Sn(OH)_(2)](NO_(3))_(2)·(solv)x(1)and[Ag_(2)(TPyP)Sn(INA)_(2)](OTf)_(2)·(CH_(3)CN)_(2)(2)(INA=isonicotinato anion,OTf=CF_(3)SO_(3)^(−)),were construct...Two porphyrin-based coordination frameworks,[Ag_(2)(TPyP)Sn(OH)_(2)](NO_(3))_(2)·(solv)x(1)and[Ag_(2)(TPyP)Sn(INA)_(2)](OTf)_(2)·(CH_(3)CN)_(2)(2)(INA=isonicotinato anion,OTf=CF_(3)SO_(3)^(−)),were constructed by the selfassembly of hexacoordinated(meso-tetra-(4-pyridyl)porphyrinato)Sn(IV)building blocks with Ag(Ⅰ)ions.They were characterized using elemental analysis,UV-visible spectroscopy,fluorescence spectroscopy,FT-IR,field-emission scanning electron microscopy,and X-ray crystallography.The structural motifs of the framework materials vary from 2D to 3D,depending upon the axial ligation of the Sn(IV)porphyrin centers.Their photocatalytic performance was also investigated for the degradation of cationic methylene blue(MB),anionic amaranth dye(AM),and neutral bromocresol green(BCG)dyes in aqueous solutions under visible-light irradiation.The photocatalytic efficiency of 2 was higher than that of 1.The pseudofirst-order rate constants for the degradation of dyes by 1 were estimated to be 0.015 min^(−1)(MB),0.021 min^(−1)(AM),and 0.009 min^(−1)(BCG).In the case of 2,they were 0.020 min^(−1)(MB),0.031 min^(−1)(AM),and 0.011 min^(−1)(BCG).展开更多
基金supported by the National Research Foundation of Korea(NRF)grant(no.2017R1A2B2011585)funded by the Korea government(MSIT).
文摘Two porphyrin-based coordination frameworks,[Ag_(2)(TPyP)Sn(OH)_(2)](NO_(3))_(2)·(solv)x(1)and[Ag_(2)(TPyP)Sn(INA)_(2)](OTf)_(2)·(CH_(3)CN)_(2)(2)(INA=isonicotinato anion,OTf=CF_(3)SO_(3)^(−)),were constructed by the selfassembly of hexacoordinated(meso-tetra-(4-pyridyl)porphyrinato)Sn(IV)building blocks with Ag(Ⅰ)ions.They were characterized using elemental analysis,UV-visible spectroscopy,fluorescence spectroscopy,FT-IR,field-emission scanning electron microscopy,and X-ray crystallography.The structural motifs of the framework materials vary from 2D to 3D,depending upon the axial ligation of the Sn(IV)porphyrin centers.Their photocatalytic performance was also investigated for the degradation of cationic methylene blue(MB),anionic amaranth dye(AM),and neutral bromocresol green(BCG)dyes in aqueous solutions under visible-light irradiation.The photocatalytic efficiency of 2 was higher than that of 1.The pseudofirst-order rate constants for the degradation of dyes by 1 were estimated to be 0.015 min^(−1)(MB),0.021 min^(−1)(AM),and 0.009 min^(−1)(BCG).In the case of 2,they were 0.020 min^(−1)(MB),0.031 min^(−1)(AM),and 0.011 min^(−1)(BCG).
