Exploring the fluorescence switching phenomenon of curcumin encapsulated niosomes: in vitro real time monitoring of curcumin release to cancer cells

This is the first report on the reversible fluorescence switching of curcumin encapsulated niosomes exhibiting a strong blue color excimer emission in the UV region and a green color luminescence of the excited state monomer form of curcumin that undergoes ESIPT in the visible region. The real time monitoring of the release of curcumin from niosomes is feasible through the change of fluorescence color from blue to green.