Wu Xiren, Shen Xin, Fan Shuran, Trivedi Manoj, Li Boahong, Kumar Abhinav, Liu Jianqiang
Dongguan Key Laboratory of Drug Design and Formulation Technology, Key Laboratory of Research and Development of New Medical Materials of Guangdong Medical University, School of Pharmacy, Guangdong Medical University Dongguan 523808 P. R. China
Department of Chemistry, University of Delhi Delhi India.
RSC Adv. 2018 Jun 28;8(42):23529-23538. doi: 10.1039/c8ra04145h. eCollection 2018 Jun 27.
A new Pb(ii)-based 2D MOF comprising π-conjugated ligand 4'-(1-tetrazol-5-yl)-[1,1'-biphenyl]-3,5-dicarboxylic acid (TZBPDC) and having the formula {PbNa(TZBPDC)(DMF)} (1) has been synthesized. Structural characterization of 1 indicates that the MOF has a 4-connected (4,4) motif. The photoluminescent investigation indicates that 1 can behave as potential luminescent sensor for the detection of nitroaromatic compounds (NACs), especially 2,4-dinitrophenol (2,4-DNP) and ferric ions, through the decrease in its luminescence intensity. Additionally, 1 also displays excellent capacity for the photodegradation of methylene orange (MO), which is a constituent of wastewater discharge. The most plausible mechanisms for the decrease in the luminescent intensity of 1 in the presence of different NACs have been explored though theoretical calculations, and the photocatalysis of 1 for organic dyes has been addressed using density of states (DOS) and partial DOS calculations.
一种基于铅（II）的新型二维金属有机框架已被合成，它由π共轭配体4'-（1-四唑-5-基）-[1,1'-联苯]-3,5-二羧酸（TZBPDC）构成，化学式为{PbNa(TZBPDC)(DMF)} （1）。对化合物1的结构表征表明，该金属有机框架具有4连接的（4,4）拓扑结构。光致发光研究表明，化合物1可作为潜在的发光传感器，通过其发光强度的降低来检测硝基芳香族化合物（NACs），尤其是2,4-二硝基苯酚（2,4-DNP）和铁离子。此外，化合物1还对废水中的成分亚甲基橙（MO）表现出优异的光降解能力。通过理论计算探究了在不同NACs存在下化合物1发光强度降低的最合理机制，并利用态密度（DOS）和分态密度计算研究了化合物1对有机染料的光催化作用。
