A triazine pyridinium derivative was encapsulated into a cucurbit[7]uril and assembled with sulfonatocalix[4]-arene, hyaluronic acid, and commercial dyes, achieving fluorescence cascade enhancement and effective FRET process for two-photon NIR targeted cell imaging.
A triazine pyridinium derivative (TAZpy) was encapsulated into the cavity of a cucurbit[7]uril and further assembled with sulfonatocalix[4]-arene, hyaluronic acid and commercial dyes, which not only achieved fluorescence cascade enhancement and an effective FRET process based on macrocyclic confinement, but was also applied in two-photon NIR targeted cell imaging. Supramolecular cascade assembly based on a triazine pyridinium derivative extended an efficient FRET process to achieve two-photon NIR targeted cell imaging.
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