【摘要】 选择刚性的2,6-双(苯并咪唑基)吡啶(H2BBP)作为配体,以对苯二甲酸(BDC)作为第二配体,通过自组装的方法与过渡金属形成了2种新型的1D链状金属-有机配位聚合物[Zn(H2BBP)(BDC)]n(1)和{[Cd2(H2BBP)2(BDC)2]·3H2O}n(2)。利用单晶X射线衍射、热重等表征方法对化合物1、2进行了结构分析。由于化合物1中金属离子与BDC配体羧基都是通过单齿配位,而化合物2中的金属离子是单双齿杂合配位,导致化合物1与化合物2中的一维zigzag链夹角不同。利用荧光光谱法对化合物1、2进行了4-硝基苯酚(4-NP)检测研究,结果表明4-NP对化合物1、2均有较强的荧光淬灭作用,且化合物1的检测限可低至30.96μg·L-1。更多还原

【Abstract】 Two new 1 D chain luminescence metal-organic coordination polymers [Zn(H2 BBP)(BDC)]n(1) and {[Cd2(H2 BBP)2(BDC)2]·3 H2 O}n(2) were prepared by hydrothermal method using the rigid 2,6-bis(benzimidazolyl)pyridine(H2 BBP) and ancillary ligand terephthalic acid(BDC) as the ligands. The metal ion in compound 1 was coordinated with the carboxyl group of the BDC ligand by the monodentate mode, while the metal ion in the compound 2 was monodentate-bidentate heterozygous coordination, which results in the different angles of 1 D zigzag chain in compound 1 and compound 2. 4-Nitrophenol(4-NP) detection of compounds 1 and 2 was carried out by fluorescence spectroscopy. The results show that 4-NP has strong fluorescence quenching effect on compounds 1 and 2, and the detection limit of compound 1 could be as low as 30.96 μg·L-1. CCDC: 1906736, 1; 1906737, 2.更多还原