Fully Chelating N<sub>3</sub>O<sub>2</sub>-Pentadentate Planar Ligands Designed for the Strongest and Selective Capture of Uranium from Seawater
作者:Takumi Mizumachi、Minami Sato、Masashi Kaneko、Tomoyuki Takeyama、Satoru Tsushima、Koichiro Takao
DOI:10.1021/acs.inorgchem.2c00306
日期:2022.4.25
pentadentate planar ligands, H2saldian and its derivatives, were designed for the strong and selective capture of UO22+ in seawater. In the simulated seawater condition (0.5 M NaCl + 2.3 mM HCO3–/CO32–, pH 8), saldian2– shows the strongest complexation with UO22+ to form UO2(saldian) (log β11 = 28.05 ± 0.07), which is more than 10 order of magnitude greater than amidoxime-based or -inspired ligand systems most
基于UO 2 2+独特的五重赤道配位,设计了水溶性五齿平面配体H 2 saldian 及其衍生物,用于在海水中强选择性捕获UO 2 2+ 。在模拟海水条件下(0.5 M NaCl + 2.3 mM HCO 3 – /CO 3 2–,pH 8),saldian 2–与 UO 2 2+形成最强的络合形成 UO 2 (saldian) (log β 11= 28.05 ± 0.07),比最常用于从海水中捕获 U 的基于偕胺肟或受启发的配体系统大 10 个数量级以上。还证明了对海水中共存的其他金属离子对 UO 2 2+的良好选择性。