Uranium extraction from seawater (UES) efficiency is limited by the material design, such as U-selective binding sites, their uniform distribution, surface area exposure, diffusivity, and stability. Herein, we report a U-selective single-component hydrogen-bonded organic framework (^CSMCRIHOF-1) of phenoxy-imine synthons conjugated to pyridyl tectons with varied pore dimensions of ∼3.6—∼3.8 Å, resulting in flow-through channels and 328 m²/g BET surface area. The ^CSMCRIHOF-1 shows a 3D robust network of hydrogen bonds (O−H···O, C−H···O, and O−H···N) supported by π-π stacking, exhibiting excellent hydrolytic stability under broad pH range (pH 1–10). Relative to other framework materials, the ^CSMCRIHOF-1 is easily processable and regenerable. Further processing of ^CSMCRIHOF-1 yields large-area free-standing thin films (TFCHs) of tunable thickness from 40 to 500 nm with enhanced surface area (550 m²/g). TFCH shows significant UES capacities of ∼11 mg/g within 5 days and 17.9 mg/g in 30 days from natural seawater.

从海水中提取铀 (UES) 的效率受到材料设计的限制，例如 U 选择性结合位点、它们的均匀分布、表面积暴露、扩散性和稳定性。在这里，我们报告了一种 U 选择性单组分氢键有机骨架 ( ^CSMCRI HOF-1)，它由苯氧亚胺合成子与不同孔径为 ∼3.6-∼3.8 Å 的吡啶基结构共轭，从而形成流通通道和328 m ² /g BET 表面积。CSMCRI HOF-1 显示出由 π-π 堆叠支持的 3D 稳健的^氢键网络（O-H···O、C-H···O 和 O-H···N），表现出优异的水解稳定性在较宽的 pH 范围（pH 1-10）下。相对于其他框架材料，^CSMCRIHOF-1 易于加工和再生。^CSMCRI HOF-1的进一步加工产生大面积的自支撑薄膜 (TFCH)，其厚度从 40 到 500 nm 可调，具有增强的表面积 (550 m ² /g)。TFCH 在 5 天内显示出显着的 UES 容量，在 5 天内达到 11 mg/g，在 30 天内从天然海水中达到 17.9 mg/g。