One new chiral zeolitic rho-type metal-organic framework [Cd（L-ala）2]n（1） has been successfully synthesized based on L-alanine chiral ligand, which demonstrates the feasibility of fabricating MOF that integrates t...One new chiral zeolitic rho-type metal-organic framework [Cd（L-ala）2]n（1） has been successfully synthesized based on L-alanine chiral ligand, which demonstrates the feasibility of fabricating MOF that integrates the 4-connected zeotype topology by the employment of L-alanine. To the best of knowledge, it’s the first report that metal-organic framework based on amino acid features the chiral zeolitic rho-type structure. Compound 1 was characterized by X-ray powder diffraction, elemental analysis and single-crystal X-ray diffraction. Crystal data: C6 H9 CdN2 O4, Mr = 285.55, cubic system, space group I432, a = 24.0795（6）, V = 13961.9（10） ?3, Z = 48, Dc = 1.630 Mg/m3, F（000） = 6672, μ（Mo Kα） = 1.865 mm-1, S = 1.058, R = 0.0271 and wR = 0.0312 for 1870 observed reflections with I > 2σ（I）. The circular dichroism（CD） property of compound 1 was also investigated.展开更多
A microporous and robust bimetal-organic framework[Cd_(2)Ba(NH_(2)-BTB)_(2)]·2(DMA)·2(H_(2)O)(1)was constructed by mixing the heterometallic nodes and an tridentate carboxyl ligand with amino group,benefitin...A microporous and robust bimetal-organic framework[Cd_(2)Ba(NH_(2)-BTB)_(2)]·2(DMA)·2(H_(2)O)(1)was constructed by mixing the heterometallic nodes and an tridentate carboxyl ligand with amino group,benefiting from the synergistic effect of active sites,exposed amino groups and ultramicroporous structure.This compound displays an extraordinary selectivity of CO_(2)/CH4 and C_(2)H_(2)/CH_(4)(16.7 and 146.3)at 298 K and 1 atm,which can exceed those of many reported MOFs under the same conditions.This work provides an important model to design metal-organic frameworks for the adsorption and separation of small gas molecules.展开更多
A water-stable porous anionic metal-organic framework(MOF),[(CH3)2NH2][In(TCPP)4/3]n·(2DMF)n(3H2O)n(1,TCPP=1,1,2,2-tetra(4-carboxylbiphenyl)ethylene),was synthesized.Here,compound 1 showed extremely high sensitiv...A water-stable porous anionic metal-organic framework(MOF),[(CH3)2NH2][In(TCPP)4/3]n·(2DMF)n(3H2O)n(1,TCPP=1,1,2,2-tetra(4-carboxylbiphenyl)ethylene),was synthesized.Here,compound 1 showed extremely high sensitivity and selectivity to current general-purpose pesticide 2,6-dichloro-4-nitroaniline(DCN)in aqueous solution.The fluorescence intensity of compound 1 could be decreased as much as 80%by 6 mL DCN,and it was almost completely quenched only with 20 mL DCN.The results indicate that compound 1 can act as a fluorescent probe for DCN.展开更多
基金supported financially by National Natural Science Foundation of China(No.21601080)
文摘One new chiral zeolitic rho-type metal-organic framework [Cd（L-ala）2]n（1） has been successfully synthesized based on L-alanine chiral ligand, which demonstrates the feasibility of fabricating MOF that integrates the 4-connected zeotype topology by the employment of L-alanine. To the best of knowledge, it’s the first report that metal-organic framework based on amino acid features the chiral zeolitic rho-type structure. Compound 1 was characterized by X-ray powder diffraction, elemental analysis and single-crystal X-ray diffraction. Crystal data: C6 H9 CdN2 O4, Mr = 285.55, cubic system, space group I432, a = 24.0795（6）, V = 13961.9（10） ?3, Z = 48, Dc = 1.630 Mg/m3, F（000） = 6672, μ（Mo Kα） = 1.865 mm-1, S = 1.058, R = 0.0271 and wR = 0.0312 for 1870 observed reflections with I > 2σ（I）. The circular dichroism（CD） property of compound 1 was also investigated.
基金supported financially by National Natural Science Foundation of China (No. U1904183)Science Foundation for Excellent Youth Scholars of Henan (212300410061, 20HASTIT006)
文摘A microporous and robust bimetal-organic framework[Cd_(2)Ba(NH_(2)-BTB)_(2)]·2(DMA)·2(H_(2)O)(1)was constructed by mixing the heterometallic nodes and an tridentate carboxyl ligand with amino group,benefiting from the synergistic effect of active sites,exposed amino groups and ultramicroporous structure.This compound displays an extraordinary selectivity of CO_(2)/CH4 and C_(2)H_(2)/CH_(4)(16.7 and 146.3)at 298 K and 1 atm,which can exceed those of many reported MOFs under the same conditions.This work provides an important model to design metal-organic frameworks for the adsorption and separation of small gas molecules.
基金Supported by Supporting Plan for Scientific and Technological Innovative Talents in Universities of Henan Province(No.20HASTIT006)。
文摘A water-stable porous anionic metal-organic framework(MOF),[(CH3)2NH2][In(TCPP)4/3]n·(2DMF)n(3H2O)n(1,TCPP=1,1,2,2-tetra(4-carboxylbiphenyl)ethylene),was synthesized.Here,compound 1 showed extremely high sensitivity and selectivity to current general-purpose pesticide 2,6-dichloro-4-nitroaniline(DCN)in aqueous solution.The fluorescence intensity of compound 1 could be decreased as much as 80%by 6 mL DCN,and it was almost completely quenched only with 20 mL DCN.The results indicate that compound 1 can act as a fluorescent probe for DCN.
