基于 Naphthalene-1,8-dicarboxylate 配位容器的多孔分子固体吸附碘,Crystal Growth & Design

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基于 Naphthalene-1,8-dicarboxylate 配位容器的多孔分子固体吸附碘
Crystal Growth & Design ( IF 3.2 ) Pub Date : 2022-04-13 , DOI: 10.1021/acs.cgd.2c00039
Jin-Yan Liu _{1,

2} , Tian-Pu Sheng ₂ , Chang Li ₂ , Zhenqiang Wang ₃ , Feng-Rong Dai ₂ , Zhong-Ning Chen _{1,

2}

Affiliation

核工业和环境工业迫切需要有效的方法来隔离放射性碘元素。基于容器分子的纳米多孔固体吸附剂因其独特的可调节内在和外在多孔结构而特别适用于实现碘螯合。在目前的工作中，我们描述了两种基于磺酰基杯芳烃前体和萘-1,8-二羧酸酯接头的新型配位容器的设计和合成，并展示了它们在碘吸附和释放方面的广阔应用前景。我们表明，除了更常见的 C-H···π 氢键和疏水相互作用外，另一种不太受欢迎的非共价相互作用类型，即双 Br···π 结合基序，可以通过用溴取代基修饰二羧酸酯接头来引入，以加强晶体堆积并保持分子容器的固态孔隙率。这些合成配位容器不仅在固-气界面表现出优异的碘蒸气吸附能力，而且还表现出从己烷溶液通过固-液界面的有效碘捕获能力。重要的是，这些多孔分子固体对碘的吸附表现出显着的可逆性和可回收性，表明它们在碘捕获和释放方面很有前景。这些合成配位容器不仅在固-气界面表现出优异的碘蒸气吸附能力，而且还表现出从己烷溶液通过固-液界面的有效碘捕获能力。重要的是，这些多孔分子固体对碘的吸附表现出显着的可逆性和可回收性，表明它们在碘捕获和释放方面很有前景。这些合成配位容器不仅在固-气界面表现出优异的碘蒸气吸附能力，而且还表现出通过固-液界面从己烷溶液中有效捕获碘的能力。重要的是，这些多孔分子固体对碘的吸附表现出显着的可逆性和可回收性，表明它们在碘捕获和释放方面很有前景。

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Iodine Adsorption via Porous Molecular Solids Based on Coordination Containers Derived from Naphthalene-1,8-dicarboxylate

Efficient methods to sequester the radioactive iodine element are urgently needed in the nuclear and environmental industries. Nanoporous solid adsorbents based on container molecules are particularly suited for achieving iodine sequestration due to their uniquely tunable intrinsic and extrinsic porous structure. In the present work, we describe the design and synthesis of two new coordination containers based on a sulfonylcalixarene precursor and naphthalene-1,8-dicarboxylate linker and demonstrate their promising application for iodine adsorption and release. We show that, in addition to the more common C–H···π hydrogen bonding and hydrophobic interactions, another less appreciated type of noncovalent interaction, namely, a dual Br···π binding motif, can be introduced through the modification of the dicarboxylate linker with a bromine substituent to strengthen the crystal packing and maintain the solid-state porosity of the molecular containers. These synthetic coordination containers not only exhibit an excellent adsorption capacity for iodine vapor at a solid–gas interface but also show an effective iodine capture ability from a hexane solution through a solid–liquid interface. Importantly, the adsorption of iodine by these porous molecular solids displays remarkable reversibility and recyclability, indicating their promising practical utility for iodine capture and release.

更新日期：2022-04-13

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