Constructing "breathing" dynamic skeletons with extra π-conjugated adsorption sites for iodine capture.

ABSTRACT: Radioiodine (¹²⁹I and ¹³¹I) emission from the nuclear waste stream has aroused enormous apprehension because of its quick diffusion and radiological contamination. Conventional porous adsorbents such as zeolites and carbon with rigid skeletons and constant pore volumes reveal a limited performance for reliable storage. Here, a series of soft porous aromatic frameworks (PAFs) with additional π-conjugated fragments is disclosed to serve as physicochemical stable media. Due to the flexibility of the tertiary amine center, the PAF products provide sufficient space for the binding sites, and thus exhibit a considerable capability for iodine capture from both gaseous and soluble environments. The obtained capacity of PAFs is ca. 1.6 times higher than that of PAF-1 wh

SUBMITTER: Xia L 

PROVIDER: S-EPMC9066021 | biostudies-literature | 2019 Jul

REPOSITORIES: biostudies-literature