| Title | Facile one-step solvothermal synthesis of a luminescent europium metal-organic framework for rapid and selective sensing of uranyl ions |
| Authors | Li, Linnan Shen, Sensen Su, Jie Ai, Wanpeng Bai, Yu Liu, Huwei |
| Affiliation | Peking Univ, Beijing Natl Lab Mol Sci, Key Lab Bioorgan Chem & Mol Engn, Minist Educ,Inst Analyt Chem,Coll Chem & Mol Engn, Beijing 100871, Peoples R China Shanghai Univ Tradit Chinese Med, Inst Chinese Materia Med, SATCM Key Lab New Resources & Qual Evaluat Chines, MOE Key Lab Standardizat Chinese Med, Shanghai 201203, Peoples R China Peking Univ, Analyt Instrumentat Ctr, Beijing 100871, Peoples R China |
| Keywords | Metal-organic framework Europium Luminescent sensing Uranyl ions |
| Issue Date | 2019 |
| Publisher | ANALYTICAL AND BIOANALYTICAL CHEMISTRY |
| Abstract | A simple, cost-effective, and portable uranium sensory material with adequate selectivity is increasingly urgent and would be of great importance in environmental monitoring of radionuclides. Herein, we report a novel luminescent europium metal-organic framework (Eu-MOF) with plenty of Lewis basic sites for binding uranyl ions (UO2 (2+)), the most common form of uranium in solution, through a facile one-step solvothermal synthetic route. The mesoporous structure consists of europium nodes and flexible nitrogen-containing ligands with a 29.2 x 20.5 (2) channel along the c-axis. Furthermore, the obtained material displays characteristic fluorescence of trivalent Eu3+ and could be applied as a turn-off sensory probe targeting UO2 (2+) in solution. Differential fluorescent quenching occurred upon a series of potential interfering ions compared to UO2 (2+) and the detection limit as low as 0.9 mu M was achieved with a rapid response. |
| URI | http://hdl.handle.net/20.500.11897/547113 |
| ISSN | 1618-2642 |
| DOI | 10.1007/s00216-019-01875-2 |
| Indexed | SCI(E) EI |
| Appears in Collections: | å å¦ä¸ å å å·¥ç¨ å¦é ¢ 生物有机与分子工程教育部重点实验室 |
