Li Lin, Yu Ting, Qian Zhenghua, Wu Xiaoling, He Hui, Ye Guoan, Qiao Yanbo
Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, People's Republic of China.
University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China.
R Soc Open Sci. 2022 Aug 31;9(8):220525. doi: 10.1098/rsos.220525. eCollection 2022 Aug.
Two new metal-organic frameworks (MOFs) (Th/ Ce -TCPE) based on 1,2,4,5-tetrakis(4-carboxyphenyl)ethylene were obtained using a straightforward reaction under moderate conditions. Th and Ce formed the central units of this MOF in the mononuclear and in the unusual trinuclear cluster configurations, respectively. The resulting MOFs were analysed by fluorescence spectroscopy to understand their luminescence. The obtained data revealed that benzene's electron cloud density and torsion angle on the ligand were affected by the acetic acid molecule and Th(IV), which caused Th-TCPE to irradiate stronger blue emission, but Ce-TCPE showed no fluorescence due to the self-quenching. Such a unique luminescence property could be used for fluorescence or radiopharmaceutical sensing.
通过在温和条件下进行的直接反应，制备了两种基于1,2,4,5-四（4-羧基苯基）乙烯的新型金属有机框架材料（MOFs）（Th/Ce -TCPE）。Th和Ce分别以单核和不寻常的三核簇构型形成了该MOF的中心单元。通过荧光光谱对所得的MOFs进行分析以了解其发光情况。获得的数据表明，配体上苯的电子云密度和扭转角受到乙酸分子和Th(IV)的影响，这使得Th-TCPE发出更强的蓝色发射光，但Ce-TCPE由于自猝灭而无荧光。这种独特的发光性质可用于荧光或放射性药物传感。
