Search

Given the growing threat of antibiotic pollutants to the natural environment and human health, detecting nitrofuran antibiotics rapidly, selectively, and at trace levels is crucial but presents a challenging task. In this work, we synthesized a novel luminescent conjugated microporous polymer (AP-CMP) through the polycondensation of 9,10-bis(4-formylphenyl) anthracene with pyrrole to form porphyrinic linkages. The designed porphyrin-formed reaction successfully prevents unfavorable quenching due to the aggregation and π-π stacking of highly conjugated anthracene building blocks. The as-formed highly extended and conjugated structure endows AP-CMP with high fluorescence, porosity, and the ability to selectively and rapidly detect nitrofuran antibiotics through fluorescence quenching. AP-CMP has low detection limits of 0.62 ppm for Nitrofurazone (NFZ), 0.67 ppm for Nitrofurantoin (NFT), and 0.77 ppm for Furazolidone (FZD). Furthermore, owing to its inherent electron-donating capabilities, AP-CMP has remarkable ability to identify 2,4,6-trinitrophenol from other nitroaromatic compounds via a turn-off response with a 0.2 ppm limit of detection (LOD). With its anti-interference features, high stability, reusability, metal-free nature, and potential for large-scale production, AP-CMP provides a promising dual-functional sensor platform for practical applications. [Display omitted] • A novel luminescent conjugated microporous polymer, AP-CMP, was constructed by polycondensation of 9,10-bis(4-formylphenyl) anthracene with pyrrole. • The porphyrinic linkages formation overcomes π-π stacking of the conjugated structures, featuring amorphous and high porous frameworks with excellent luminescent properties. • AP-CMP exhibited selective detection of nitrofuran antibiotics, including Nitrofurazone, Nitrofurantoin and Furazolidone, as well as nitro explosive 2,4,6-trinitrophenol with excellent sensitivity. [ABSTRACT FROM AUTHOR]

The adsorption of iodine by porous organic polymers is an active research topic. Two new thiol-linked conjugated microporous polymers (SHCMPs) were successfully prepared by thioalkynes click polymerization. Lone pair electrons of heteroatoms can enhance the interaction between adsorbent and adsorbate, the ability of adsorbent to capture iodine can be improved by introducing electron-rich groups such as nitrogen, thiophene, fluorine, etc. The saturated iodine adsorption capacities of SHCMP-1 and SHCMP-2 are 590 and 495 wt.%, respectively. In addition, SHCMP-2 performs well in detecting Fe3+ in aqueous solution, which has potential importance for industrial application of water treatment. [Display omitted] • Two new thiol-linked conjugated microporous polymers (SHCMPs) was rationally synthesized. • SHCMPs containing abundant active sites, which exhibited good adsorption capacity for iodine. • The polymer SHCMP-2 could effectively detect Fe3+ ions. [ABSTRACT FROM AUTHOR]