Detection of NO_2 Based on 4-Carboxyl-4′-hydroxy Azobenzene and Its Cu(II) Complex  

作　　者：李建 龚云 秦建波 林建华 

机构地区：[1]Department of Chemistry, College of Chemistry and Chemical Engineering, Chongqing University

出　　处：《Chinese Journal of Structural Chemistry》2013年第2期252-260,共9页结构化学（英文）

基　　金：Supported by Chongqing Postdoctoral Science Foundation (No. XM2012002)

摘　　要：An organic ligand and its Cu（II） complex formulated as （C13HloN203）·5H2O （H2L·5H2O, 1） and Cu（HL）2（phen）·0.125H2O （2, H2L = 4-carboxyl-4′-hydroxy azobenzene, phen = 1,10-phenanthroline） have been synthesized and structurally characterized by single-crystal X-ray diffraction. In the two compounds, H2L and HL exhibit a trans-conformation. Complex 2 shows a mononuclear Cu（Ⅱ） structure with the hydroxyl group of HL uncoordinated. Complex 2 is assembled into a three-dimensional （3D） supramolecular architecture by hydrogen bonds and π-π stacking interactions. H2L and compound 2 can detect NO2 via reversible and irreversible color changes, respectively. The mechanism for the color changes is investigated.An organic ligand and its Cu（II） complex formulated as （C13HloN203）·5H2O （H2L·5H2O, 1） and Cu（HL）2（phen）·0.125H2O （2, H2L = 4-carboxyl-4′-hydroxy azobenzene, phen = 1,10-phenanthroline） have been synthesized and structurally characterized by single-crystal X-ray diffraction. In the two compounds, H2L and HL exhibit a trans-conformation. Complex 2 shows a mononuclear Cu（Ⅱ） structure with the hydroxyl group of HL uncoordinated. Complex 2 is assembled into a three-dimensional （3D） supramolecular architecture by hydrogen bonds and π-π stacking interactions. H2L and compound 2 can detect NO2 via reversible and irreversible color changes, respectively. The mechanism for the color changes is investigated.

关 键 词：4-carboxyl-4′-hydroxy azobenzene COMPLEX SYNTHESIS structure color change 

分 类 号：O627.12[理学—有机化学]