本工作采用刚性单体1,3,5-三(4-甲酰基苯基)-三嗪(TFPT)调控COFs的拓扑结构,同时引入柔性单体1,10-邻菲罗啉-2,9-二酰肼(D)或吡啶-2,6-二酰肼(P),构筑出对TRUs具有特异性识别能力的两种COFs:DAPhen-COF和Py-COF。其中,DAPhen-COF在0.5 M HNO₃中对Np(V)、 Pu(IV)和Am(III)的去除率分别高达99.1%和95.8%。在0.01M HNO₃中对Am(III)的去除率高达98.6%。此外,其Np/Gd的分离因子超过5000,显著优于其他以报道的固相材料。
文章信息:Run-Jian Cao,# Heng-Yi Zhou,# Qun-Yan Wu,# Zhe Xiao, Tao-Yuan Xiu, Jie Li, Hong-Bin Tang, Li-Yong Yuan*, Wang-Suo Wu, and Wei-Qun Shi*. Rigidity-Flexibility Regulation and Hard-Soft Donor Combination: Dual Strategies in Covalent Organic Frameworks Construction for Actinides/lanthanides Separation. Adv. Mater. 2024, accepted. (The first three authors contributed equally to this work)