Abstract
A bromophenylpyridine derivative (BH-PY) was designed and synthesized as the guest molecule included in the cavity of cucurbit[8]uril (CB[8]) to form a 2:1 host–guest complex, which displays good room-temperature phosphorescence (RTP) in aqueous solutions. The interaction and optical properties of CB[8] with a guest in aqueous solution were investigated using 1H NMR spectroscopy, UV–Vis absorbance spectra, fluorescence and phosphorescence spectra and X-ray diffraction analysis in detail. The result showed that the bromophenyl moieties of the two guest molecules are included in the cavity of the CB[8] in a ‘head-to-tail’ stacking way, whereas the other part of BH-PY remains outside the portal to form a 2:1 supramolecular structurce, and supramolecular assemblies were applied for targeted phosphorescent imaging of mitochondria.
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Acknowledgements
This work was supported by the National Natural Science Foundation of China (Grant No. 21001040), and the projects of the Science and Technology Support of Guizhou province (Grant No. QKHZC[2020]4Y161).
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Chen, Y., Yang, J., Zhang, S. et al. Construction of a room-temperature phosphorescence system by cucurbit[8]uril-based supramolecular assembly. J Incl Phenom Macrocycl Chem 102, 429–437 (2022). https://doi.org/10.1007/s10847-022-01129-2
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DOI: https://doi.org/10.1007/s10847-022-01129-2