2020
DOI: 10.1007/s12274-020-3217-7
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Abstract: This work reports a de novo synthesis of novel bifunctional conjugated microporous polymers (CMPs) exhibiting a synergistic-effect involved coordination behavior to uranium. It is highlighted that the synthetic strategy enables the engineering of the coordination environment within amidoxime functionalized CMP frameworks by specifically introducing ortho-substituted amino functionalities, enhancing the affinity to uranyl ions via forming synergistic complexes. The CMPs exhibit high Brunauer-Emmett-Teller (BET)… Show more

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Cited by 20 publications
(17 citation statements)
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“…amine moieties [101][102][103] adjacent to the amidoxime. Likewise, coordinating bonds have been formed to adsorb Hg(II) (e.g., coordinating sulfur and triazole moieties), [104][105][106][107] and form chelating bonds with Pb(II) (chelating bonds between lead and amine, hydroxyl or sulfur groups).…”
Section: Polymeric Designs To Enhance Selectivitymentioning
confidence: 99%
See 1 more Smart Citation
“…amine moieties [101][102][103] adjacent to the amidoxime. Likewise, coordinating bonds have been formed to adsorb Hg(II) (e.g., coordinating sulfur and triazole moieties), [104][105][106][107] and form chelating bonds with Pb(II) (chelating bonds between lead and amine, hydroxyl or sulfur groups).…”
Section: Polymeric Designs To Enhance Selectivitymentioning
confidence: 99%
“…Reducing the distance between the two moieties increased the separation factor for uranium by more than a factor of 6. Similarly, the affinity of amidoxime moieties for uranium can be enhanced with additional coordinating bonds from carboxylic acid [ 12 ] and amine moieties [ 101–103 ] adjacent to the amidoxime. Likewise, coordinating bonds have been formed to adsorb Hg(II) (e.g., coordinating sulfur and triazole moieties), [ 104–107 ] and form chelating bonds with Pb(II) (chelating bonds between lead and amine, hydroxyl or sulfur groups).…”
Section: Designing Selective Multifunctional Sorbentsmentioning
confidence: 99%
“…Therefore, approaches involving biomimetic designs have offered inspiration for designing sophisticated artificial materials. 30 36 Inspired by the preorganization of binding sites employed by nature, we previously demonstrated that the affinity of the chelating group in adsorbents toward uranium could be significantly improved by engineering their spatial distribution to facilitate cooperative binding. 37 Intrigued by this study, we sought to advance this strategy by creating uranyl-specific ligand “hooks” via precisely manipulating the relative distances and angles of chelators at the molecular level to alter the binding mode for enhanced metal selectivity.…”
Section: Introductionmentioning
confidence: 99%
“…Traditionally, the optimization of the selectivity of adsorbents has been mostly accomplished by designing new chelating sites, which are often accompanied by cumbersome synthetic procedures that hinder their practical application. The selective recognition and sequestration of specific ions occur efficiently in nature; this regulates the extreme selectivity for specific ions by manipulating the cooperation of binding sites. Therefore, approaches involving biomimetic designs have offered inspiration for designing sophisticated artificial materials. Inspired by the preorganization of binding sites employed by nature, we previously demonstrated that the affinity of the chelating group in adsorbents toward uranium could be significantly improved by engineering their spatial distribution to facilitate cooperative binding . Intrigued by this study, we sought to advance this strategy by creating uranyl-specific ligand “hooks” via precisely manipulating the relative distances and angles of chelators at the molecular level to alter the binding mode for enhanced metal selectivity.…”
Section: Introductionmentioning
confidence: 99%
“…Conjugated porous networks (CPNs) are a unique class of materials featuring by extended π-conjugation, permanent nanoporous skeletons, large surface area, diverse structures, and superb stability. [1][2][3][4][5] Taking advantage of widely available building blocks and various coupling strategies, since the discovery of Cooper's group in 2007 about the synthesis of microporous poly(aryleneethynylene) networks, [6] intensive studies have been conducted toward the design and fabrication of CPN architectures, and their applications in the fields of gas separation/purification, catalysis, ion extraction, and energy storage. [2,[7][8][9][10] Among the CPNs derived from homocoupling of a single monomer or reaction between two or more different monomers, those constructed via direct CC bond formation between aromatic rings demonstrated superior electronic conductivity and thermal stability compared with the counterparts involving vinyl, acetylenyl, imine, or amino functionalities.…”
Section: Introductionmentioning
confidence: 99%