Ko Ju Hong, Lee Sang Moon, Kim Hae Jin, Ko Yoon-Joo, Son Seung Uk
Department of Chemistry, Sungkyunkwan University, Suwon 16419, Korea.
Korea Basic Science Institute, Daejeon 34133, Korea.
ACS Macro Lett. 2018 Nov 20;7(11):1353-1358. doi: 10.1021/acsmacrolett.8b00617. Epub 2018 Oct 26.
This work introduces a new efficient method for the postsynthetic modification of conjugated microporous polymers (CMPs). Osmium catalysis of hollow CMP (H-CMP) in the presence of NaClO resulted in the conversion of alkynes in the skeleton of CMPs to dicarbonyl groups to form H-CMP-DC. Through controlling the reaction time, the carbonylation degree of H-CMP could be managed, maintaining hollow morphology. We verified the benefits of carbonyl groups in H-CMP-DC in the removal of Cr(VI) from water. Imination of H-CMP-DC resulted in amine-rich H-CMP (H-CMP-A), which showed enhanced adsorption performance toward Cr(VI) in water with up to 73 mg/g, compared with the H-CMP and H-CMP-DC. The H-CMP-A could be recycled at least five times, maintaining its original adsorption ability.
这项工作介绍了一种用于共轭微孔聚合物（CMPs）后合成修饰的新型高效方法。在NaClO存在下，锇催化中空CMP（H-CMP），使CMP骨架中的炔烃转化为二羰基基团，形成H-CMP-DC。通过控制反应时间，可以控制H-CMP的羰基化程度，同时保持中空形态。我们验证了H-CMP-DC中羰基基团在从水中去除Cr(VI)方面的优势。H-CMP-DC的亚胺化产生了富含胺的H-CMP（H-CMP-A），与H-CMP和H-CMP-DC相比，其对水中Cr(VI)的吸附性能增强，高达73 mg/g。H-CMP-A可以至少循环使用五次，保持其原始吸附能力。
