Concurrent supramolecular gelation and fluorescence turn-on triggered by coordination of silver ion
2012
By adding silver ion to the non-fluorescent solution of a pyridine functionalized α-cyanostilbene derivative, an immediate gelation accompanying a high-contrast fluorescence turn-on was effectively generated. The silver ion-coordinated highly fluorescent gel underwent reverse gel-to-sol transition restoring the non-fluorescent sol state upon reaction with tetrabutylammonium fluoride. Silver nanoparticles embedded in the fluorescent gel film were fabricated by in situ UV-light irradiation, which induced the surface plasmon effect on the fluorescence emission.
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