Face‐Capped M4L4 Tetrahedral Metal–Organic Cage: Iodine Capture and Release,Ion Exchange,and Electrical Conductivity |
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| Authors: | Wei‐Qin Xu Yu‐Hao Li Dr. Hai‐Ping Wang Dr. Ji‐Jun Jiang Prof. Dr. Dieter Fenske Prof. Dr. Cheng‐Yong Su |
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| Affiliation: | 1. Lehn Institute of Functional Materials, School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou, China;2. Karlsruher Institut für Technologie (KIT), Institut für Anorganische Chemie, Karlsruhe, Germany;3. State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, China |
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| Abstract: | An M4L4 type metal–organic cage (MOC‐19) has been synthesized from the one‐pot reaction of tri(pyridinylmethylene)phenylbenzeneamine (TPBA) with hydrated Zn(ClO4)2 under mild conditions and characterized by single‐crystal X‐Ray diffraction. Iodine capture studies show that the porous crystals of MOC‐19 exhibit a versatile behavior to accumulate iodine species not only in vapor (for I2) but also in solution (for I2 and I3?), and anion‐exchange experiments indicate the capacity to extract IO3? anions from aqueous solution. Enrichment of iodine species from KI/I2 aqueous solution proceeds facilely, revealing a pseudo‐second‐order kinetics of I3? adsorption. Furthermore, the electrical conductivity of MOC‐19 single crystals could be significantly altered by I2 inclusion. |
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| Keywords: | cage compounds conductivity iodine capture ion exchange metal– organic cages |
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