Abstract
Host—guest complexation with cucurbit[7]uril of anthocyanin model compounds in which acid—base equilibria are blocked resulted in essentially complete stabilization of their color. The color protection is a thermodynamic effect and establishes a strategy to stabilize these colored compounds at pH values of interest for practical applications.
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Electronic supplementary information (ESI) available: Synthesis of B-TMF and CB[7], fitting methods, determination of the apparent hydration constant, stabilization of flavylium cation and binding isotherms. See DOI: 10.1039/c6pp00060f
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Held, B., Tang, H., Natarajan, P. et al. Cucurbit[7]uril inclusion complexation as a supramolecular strategy for color stabilization of anthocyanin model compounds. Photochem Photobiol Sci 15, 752–757 (2016). https://doi.org/10.1039/c6pp00060f
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DOI: https://doi.org/10.1039/c6pp00060f