Incarceration of Iodine in a Pyrene-Based Metal-Organic Framework

被引：41
|
作者：
Gladysiak, Andrzej [1 ]
Nguyen, Tu N. [1 ]
Spodaryk, Mariana [2 ]
Lee, Jung-Hoon [3 ,4 ]
Neaton, Jeffrey B. [3 ,4 ,5 ]
Zuettel, Andreas [2 ]
Stylianou, Kyriakos C. [1 ]
机构：
[1] Ecole Polytech Fed Lausanne EPFL Valais, ISIC, Lab Mol Simulat LSMO, Rue Ind 17, CH-1951 Sion, Switzerland
[2] Ecole Polytech Fed Lausanne EPFL Valais, ISIC, Lab Mat Renewable Energy LMER, Rue Ind 17, CH-1951 Sion, Switzerland
[3] Lawrence Berkeley Natl Lab, Mol Foundry, Berkeley, CA 94720 USA
[4] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA
[5] Kavli Energy Nanosci Inst Berkeley, Berkeley, CA 94720 USA
来源：
CHEMISTRY-A EUROPEAN JOURNAL | 2019年 / 25卷 / 02期
基金：
瑞士国家科学基金会;
关键词：
charge transfer; conductivity; impedance spectroscopy; iodine capture; metal-organic frameworks; ELECTRICAL-CONDUCTIVITY; ENERGIES; CAPTURE; VISUALIZATION; CRYSTAL; BINDING; MOF;
D O I：
10.1002/chem.201805073
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
A pyrene-based metal-organic framework (MOF) SION-8 captured iodine (I-2) vapor with a capacity of 460 and 250 mg g(MOF)(-1) at room temperature and 75 degrees C, respectively. Single-crystal X-ray diffraction analysis and van-der-Waals-corrected density functional theory calculations confirmed the presence of I-2 molecules within the pores of SION-8 and their interaction with the pyrene-based ligands. The I-2-pyrene interactions in the I-2-loaded SION-8 led to a 10(4)-fold increase of its electrical conductivity compared to the bare SION-8. Upon adsorption, >= 95 % of I-2 molecules were incarcerated and could not be washed out, signifying the potential of SION-8 towards the permanent capture of radioactive I-2 at room temperature.
引用
收藏
页码：501 / 506
页数：6
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