Linker-Induced Structural Diversity and Photophysical Property of MOFs for Selective and Sensitive Detection of Nitroaromatics
作者:Tapan K. Pal、Nabanita Chatterjee、Parimal K. Bharadwaj
DOI:10.1021/acs.inorgchem.5b02645
日期:2016.2.15
completely quenched in the presence of 2,4,6-trinitrophenol (TNP) allowing its detection in the presence of other nitroaromatic compounds. The quenching constant for TNP was found to be 3.89 × 104 M–1, which is 26 times higher than that of TNT demonstrating greater and selective quenching ability. The emission is restored to its original value when the sample after collected by filtration is dispersed
接头[1,1':3',1”-三联苯] -4,4',4”,6'-四羧酸(H 4 L)被用于构建两个三维(3D)金属-有机骨架(MOF),即[Cd 2(L)(L 1)(DMF)(H 2 O)](2DMF)(3H 2 O)} n(1)和[Cd 4(L)2(L 2)3(H 2 O)2 ](8DMF)(8H 2 O)} n(2)(DMF = N,N'-二甲基甲酰胺)在共交联剂4,4'-联吡啶存在下(L 1)和2-氨基-4,4'-联吡啶(L 2),分别在溶剂热条件下进行。共聚体的微小变化会导致MOF整体结构的显着差异。拓扑分析显示,框架1展示了6,4连接的禁止子配置(FSC)拓扑,而框架2展示了具有Schläfli点符号4.6 2 }的双重互穿和(3,4,4)连接的新网络拓扑。4.6 4 .8} 4 2 .6 2 .8 2 }。晶体学研究揭示了框架2具有单螺旋结构并且通过非共价相互作用进一步