Redox-switchable carboranes for uranium capture and release

Keener, Megan; Hunt, C.E.L.; Carroll, Timothy G.; Kampel, V. Ts.; Dobrovetsky, Roman; Hayton, Trevor W.; Ménard, Gabriel

doi:10.1038/s41586-019-1926-4

Cited by 148 publications

(115 citation statements)

References 39 publications

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“…As the fuel of the nuclear power industry, the uranium resource in the terrestrial uranium ore is estimated to only feed the nuclear power plant for less than one century, without taking into account the ever-increasing consumption of energy 3 . The seawater, with a total amounts of about 4.5 billion tons uranium reserve, is estimated to contain 1000 times more uranium than that in terrestrial uranium ore and can ensure the sustainable nuclear energy generation for thousands of years 4,5 . Thus, the highly efficient utilization of ocean uranium resource is a promising approach to meet the growth demands of uranium.…”

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confidence: 99%

DNA nano-pocket for ultra-selective uranyl extraction from seawater

et al. 2020

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Extraction of uranium from seawater is critical for the sustainable development of nuclear energy. However, the currently available uranium adsorbents are hampered by co-existing metal ion interference. DNAzymes exhibit high selectivity to specific metal ions, yet there is no DNA-based adsorbent for extraction of soluble minerals from seawater. Herein, the uranyl-binding DNA strand from the DNAzyme is polymerized into DNA-based uranium extraction hydrogel (DNA-UEH) that exhibits a high uranium adsorption capacity of 6.06 mg g−1 with 18.95 times high selectivity for uranium against vanadium in natural seawater. The uranium is found to be bound by oxygen atoms from the phosphate groups and the carbonyl groups, which formed the specific nano-pocket that empowers DNA-UEH with high selectivity and high binding affinity. This study both provides an adsorbent for uranium extraction from seawater and broadens the application of DNA for being used in recovery of high-value soluble minerals from seawater.

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confidence: 99%

DNA nano-pocket for ultra-selective uranyl extraction from seawater

et al. 2020

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“…Following this strategy, if silyl groups would be introduced to cage boron atoms, it is anticipated that carboranes with 17 vertices or more would be prepared in the future as they are calculated to be thermodynamically more stable than 13-and 15-vertex closocarboranes 37 . On the other hand, it is further anticipated that these superclusters may find applications in coordination chemistry/materials science in view of the recent development in this field [45][46][47][48] .…”

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confidence: 99%

Synthesis and X-ray characterization of 15- and 16-vertex closo-carboranes

et al. 2020

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Carboranes are a class of carbon-boron molecular clusters with three-dimensional aromaticity, and inherent robustness. These endowments enable carboranes as valuable building blocks for applications ranging from functional materials to pharmaceuticals. Thus, the chemistry of carboranes has received tremendous research interest, and significant progress has been made in the past decades. However, many attempts to the synthesis of carboranes with more than 14 vertices had been unsuccessful since the report of a 14-vertex carborane in 2005. The question arises as to whether these long sought-after molecules exist. We describe in this article the synthesis and structural characterization of 15- and 16-vertex closo-carboranes as well as 16-vertex ruthenacarborane. Such a success relies on the introduction of silyl groups to both cage carbons, stabilizing the corresponding nido-carborane dianions and promoting the capitation reaction with HBBr2·SMe2. This work would shed some light on the preparation of carboranes with 17 vertices or more, and open the door for studying supercarborane chemistry.

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“…This work further highlights the potential promise of boron cluster-containing materials as unique building blocks for the next generation of energy storage and conversion materials and devices. [47][48][49][50][51][52][53][54][55][56][57][58][59][60][61][62][63][64][65] Conflicts of interest Please do not adjust margins There are no conflicts to declare.…”

Section: Discussionmentioning

confidence: 99%