We show that the optical properties of indigo carmine can be modulated by encapsulation within a coordination cage. Depending on the host/guest molar ratio, the cage can predominantly encapsulate either one or two dye molecules. The 1 : 1 complex is fluorescent, unique for an indigo dye in an aqueous solution. We have also found that binding two dye molecules stabilizes a previously unknown conformation of the cage.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8908503 | PMC |
| http://dx.doi.org/10.1039/d1cc07081a | DOI Listing |
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