Synthesis,structure, and host-guest chemistry of a pair of isomeric selenanthrene-bridged molecular cages |
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| Institution: | 1. School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China;2. School of Innovation and Entrepreneurship, Shaoguan University, Shaoguan 512005, China;1. School of Pharmacy, Shanxi Medical University, Taiyuan 030001, China;2. National Center for Nanoscience and Technology, Beijing 100190, China;3. Artemisinin Research Center, Institute of Chinese Materia Medica, Beijing 100700, China;1. New Cornerstone Science Laboratory, MOE Key Laboratory for Analytical Science of Food Safety and Biology, College of Chemistry, Fuzhou University, Fuzhou 350108, China;2. School of Public Health, Fujian Medical University, Fuzhou, China;3. Joint School of National University of Singapore and Tianjin University, Fuzhou International Campus of Tianjin University, Fuzhou 350207, China;4. Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China;1. Institute of Green Chemistry and Chemical Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China;2. School of the Environment and Safety, Jiangsu University, Zhenjiang 212013, China;1. College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University, Hangzhou 311121, China;2. College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China;3. Shanghai Key Laboratory of Functional Materials Chemistry, Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry & Molecular Engineering, East China University of Science & Technology, Shanghai 200237, China;1. Institute of Environmental Research at Greater Bay Area; Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education; Guangzhou Key Laboratory for Clean Energy and Materials, Guangzhou University, Guangzhou 510006, China;2. Department of Organic and Polymer Chemistry; Hunan Key Laboratory of Micro & Nano Materials Interface Science, College of Chemistry and Chemical Engineering; Central South University, Changsha 410083, China;3. College of Chemistry and Chemical Engineering, Qiannan Normal University for Nationalities, Duyun 558000, China;4. Materials Chemistry & Engineering Laboratory, Department of Polymer Science & Engineering, Dankook University, Yongin, Gyeonggi-do 16890, Republic of Korea |
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| Abstract: | A pair of selenanthrene-bridged molecular cages have been constructed through a one-step cyclization reaction of a tetrakis(iodo) crown ether with selenium powder. The tubular belt-shaped cage has an intrinsic cavity which can adaptively transform to accommodate electron-deficient guests forming 2]pseudorotaxane complexes. The other product was determined to be an isomeric cage featuring a Möbius strip structure, which exhibits slower twist-migration dynamics than its thianthrene counterpart. The success of using selenanthrene as joints enables an alternative way to structural design and property regulation of molecular cages. |
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