化学-文献汇报
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J. Mater. Chem., 2012, 22, 15939
文章亮点:
1.基于不同的溶剂来得到不同嵌套程度的晶体结构 2.对于检测硝基苯(NB)有着非常高的灵敏性
1.用不同的溶剂来合成两种嵌套程度不同的 MOF
(1)Zn3(L1)2(L2)3.6 DMF4.0 H2O-----Compound 1 Zn(NO3)2 6H2O (0.10 mmol)+L1 (0.05 mmol) + L2 (0.05mmol) in 8 mL of DMF (N,N-dimethylformamide) 130 0C for 72 h (2) Zn3(L1)2(L2)----compound 2 其他全相同,只是溶剂改为乙腈
3.热稳定性
Thermogravimetric analysis data for 1 (red) and 2 (green).
Compound 1失去H2O和DMF后为Compound 1’
Powder X-ray diffraction patterns of (a) 1 and (b) 2.
L1: 4-[3-(4-carboxyphenoxy)-2-[(4-carboxyphenoxy)methyl]-2methyl propoxy]benzoate L2: 1,4-bis(1-imidazolyl)benzene
2.结构描述
化合物1和2具有相同的空间群和构造单元也有相同的拓扑
学结构,但是嵌套程度不同
4.荧光性质
Solid-state emission spectra of 1’ (red, λ=246 nm) and 2 (green, λ=246).
将研磨好的样品浸入到不同的有机溶剂中超声30min, 放置三天使其形成一个稳定的乳浊液
其荧光性质主要取决于溶剂分子的种类
Emission intensities of 1’(a) and 2 (b) in different solvents when excited at 282nm(DMF=N,N-dimethylformamide,THF=tetrahydrofuran,NB=nitrobenzene).
Coordination environments in 1 giving One independent single net in the interpenetrating the trimetallic SBU (zinc,green; carbon, framework of 1 (zinc, green; carbon, gray; nitrogen, gray;nitrogen,blue;oxygen,red).Hydrog blue; oxygen, red). Hydrogen atoms are omitted en atoms are omitted for clarity. for clarity.
emission spectra were nearly completely quenched at a concentration of 500 ppm vol for 10 and 250 ppm vol for 2
Emission spectra of dispersed of 1’ (a) and 2 (b) different nitrobenzene concentration in DMF of 0 ppm (grey, DMF), 50 ppm (red), 150 ppm (green), 250 ppm (magenta), and 500 ppm (blue) when excited at 282 nm. Inset: corresponding emission intensities.
(a) The space-filling view of 1 along [010] direction; (b) the spacefilling view of 2 along [100] direction; (c) the simplified 2-fold interpenetrating networks of 1; (d) the simplified 3-fold interpenetrating networks of 2.
5.总结
(1)成功通过只改变溶剂的方法wenku.baidu.com得到不同嵌套程度的MOF.
(2)对于这一类无孔稳定分散性好的MOF,采用这种基于溶剂
的发光来用于荧光检测也是一个很方便,有效的方法.
文章亮点:
1.基于不同的溶剂来得到不同嵌套程度的晶体结构 2.对于检测硝基苯(NB)有着非常高的灵敏性
1.用不同的溶剂来合成两种嵌套程度不同的 MOF
(1)Zn3(L1)2(L2)3.6 DMF4.0 H2O-----Compound 1 Zn(NO3)2 6H2O (0.10 mmol)+L1 (0.05 mmol) + L2 (0.05mmol) in 8 mL of DMF (N,N-dimethylformamide) 130 0C for 72 h (2) Zn3(L1)2(L2)----compound 2 其他全相同,只是溶剂改为乙腈
3.热稳定性
Thermogravimetric analysis data for 1 (red) and 2 (green).
Compound 1失去H2O和DMF后为Compound 1’
Powder X-ray diffraction patterns of (a) 1 and (b) 2.
L1: 4-[3-(4-carboxyphenoxy)-2-[(4-carboxyphenoxy)methyl]-2methyl propoxy]benzoate L2: 1,4-bis(1-imidazolyl)benzene
2.结构描述
化合物1和2具有相同的空间群和构造单元也有相同的拓扑
学结构,但是嵌套程度不同
4.荧光性质
Solid-state emission spectra of 1’ (red, λ=246 nm) and 2 (green, λ=246).
将研磨好的样品浸入到不同的有机溶剂中超声30min, 放置三天使其形成一个稳定的乳浊液
其荧光性质主要取决于溶剂分子的种类
Emission intensities of 1’(a) and 2 (b) in different solvents when excited at 282nm(DMF=N,N-dimethylformamide,THF=tetrahydrofuran,NB=nitrobenzene).
Coordination environments in 1 giving One independent single net in the interpenetrating the trimetallic SBU (zinc,green; carbon, framework of 1 (zinc, green; carbon, gray; nitrogen, gray;nitrogen,blue;oxygen,red).Hydrog blue; oxygen, red). Hydrogen atoms are omitted en atoms are omitted for clarity. for clarity.
emission spectra were nearly completely quenched at a concentration of 500 ppm vol for 10 and 250 ppm vol for 2
Emission spectra of dispersed of 1’ (a) and 2 (b) different nitrobenzene concentration in DMF of 0 ppm (grey, DMF), 50 ppm (red), 150 ppm (green), 250 ppm (magenta), and 500 ppm (blue) when excited at 282 nm. Inset: corresponding emission intensities.
(a) The space-filling view of 1 along [010] direction; (b) the spacefilling view of 2 along [100] direction; (c) the simplified 2-fold interpenetrating networks of 1; (d) the simplified 3-fold interpenetrating networks of 2.
5.总结
(1)成功通过只改变溶剂的方法wenku.baidu.com得到不同嵌套程度的MOF.
(2)对于这一类无孔稳定分散性好的MOF,采用这种基于溶剂
的发光来用于荧光检测也是一个很方便,有效的方法.