Multifunctional amino-decorated metal-organic frameworks: nonlinear-optic, ferroelectric, fluorescence sensing and photocatalytic properties

作者：Wen, Lili^*; Zhou, Li; Zhang, Bingguang; Meng, Xianggao; Qu, Hua; Li, Dongfeng

来源：Journal of Materials Chemistry, 2012, 22(42): 22603-22609.

DOI：10.1039/c2jm34349e

• SELECTIVE GAS SORPTION
• SINGLE-CRYSTAL
• COORDINATION POLYMER
• TEMPERATURE
• SEPARATION
• CO2
• MOFS
• TRANSFORMATION
• FUNCTIONALITY
• SUBSTITUTION

Solvothermal reactions of 2-amino-1,4-benzene dicarboxylic acid (NH(2)bdcH(2)) and N-auxiliary ligands in the presence of manganese(II), zinc(II) and cobalt(II) salts have given rise to four new metal-organic frameworks, namely, [Mn-5(NH(2)bdc)(5)(bimb)(5)center dot(H2O)(0.5)](n) (bimb = 4,4'-bis(1-imidazolyl)biphenyl) (1), [Zn(NH(2)bdc)(bix)center dot(DMF)(2)](n) (bix = 1,4-bis(imidazol-1-ylmethyl)benzene) (2), [Co(NH(2)bdc)(bix)center dot(DMF)center dot(CH3CH2OH)](n) (3) and [Co(NH(2)bdc)(bpp)](n) (4) (bpp = 1,3-bis(4-pyridyl) propane). Single-crystal X-ray diffraction analyses revealed that MOF 1 displays 5-fold interpenetrating 4-connected dia 3D net; MOFs 2 and 3 are isomorphic, which possess 3-fold interpenetrating dia 3D nets; MOF 4 exhibits 4-connected sql 2D net. Noncentrosymmetric structures and multifunctionality in 1-3 are established by varying ligands and metal centers. In the solid state, polar MOFs 1-3 exhibit nonlinear-optic (NLO) and MOF 1 demonstrates typical ferroelectric behaviour with a remnant electric polarization (P-r) of 1.2 mu C cm(-2) and an electric coercive field (E-c) of 0.35 kV cm(-1). In addition, MOF 2 could be a potential luminescent probe for detecting nitrobenzene or 2-nitrotoluene via fluorescence enhancement and has been evaluated as a promising visible-light-driven photocatalyst for degradation of organic pollutants.

• 出版日期2012-11-14
• 单位华中师范大学; 中南民族大学