Cucurbituril-based supramolecular host-guest complexes: single-crystal structures and dual-state fluorescence enhancement

Two supramolecular complexes were prepared using cucurbiturils [CBs] as mediators 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 intrig...

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Veröffentlicht in:Chemical science (Cambridge) 2024-01, Vol.15 (2), p.458-465
Hauptverfasser: Wang, Hui, Liu, Hui, Wang, Mingsen, Hou, Jiaheng, Li, Yongjun, Wang, Yuancheng, Zhao, Yingjie
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Sprache:eng
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Zusammenfassung:Two supramolecular complexes were prepared using cucurbiturils [CBs] as mediators 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 M1 and CB[8] was notably uncovered, marking its first observation. These host-guest complexes exhibit distinctive photophysical properties, especially emission behaviors. Invaluable insights can be derived from these single-crystal structures. The 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. Two supramolecular complexes were prepared using cucurbiturils [CBs] as mediators and a four-armed p -xylene derivative ( M1 ) as a guest molecule.
ISSN:2041-6520
2041-6539
DOI:10.1039/d3sc04813f