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Cucurbiturils-Based Supramolecular Host-Guest Complexes: Singe-Crystal Structures and Fluorescence Enhancement
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  • Hui Wang,
  • Hui Liu,
  • Mingsen Wang,
  • Jiaheng Hou,
  • Yongjun Li,
  • Yuancheng Wang,
  • Yingjie Zhao
Hui Wang
Qingdao University of Science and Technology
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Hui Liu
Qingdao University of Science and Technology
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Mingsen Wang
Qingdao University of Science and Technology
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Jiaheng Hou
Qingdao University of Science and Technology
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Yongjun Li
Institute of Chemistry Chinese Academy of Sciences
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Yuancheng Wang
Qingdao University of Science and Technology
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Yingjie Zhao
Qingdao University of Science and Technology

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Abstract

Two supramolecular complexes were prepared using cucurbiturils [CBs] as hosts and a four-armed p-xylene derivative (M1) as a guest molecule. The single crystals of these two complexes were obtained and successfully analyzed by single-crystal X-ray diffraction (SCXRD). An unexpected and intriguing 1:2 self-assembly arrangement between the M1 and CB[8] was notably uncovered, marking its first-time observation. These host-guest complexes exhibit distinctive photophysical properties, especially emission behaviors. The invaluable insights derived from these precious single-crystal structures provide both precise structural information regarding the supramolecular complexes and a deeper understanding of the intricate mechanisms governing their photophysical properties.