α-Cyanostilbene-based sensor with “AIE and ESIPT” features emitting long-wavelength intense red-fluorescence for highly selective and sensitive detection of Cu2+

Cu2+ catalyzed benzoxazole formation from Schiff base: Reactive organic chemosensors and effect of hydroxyl position

“…It is unusual because paramagnetic Cu 2+ coordination is expected to quench the fluorescence. 39,40 Although aldehyde precursor exhibits fluorescence in solution, it showed weak fluorescence at 456 nm in CH 3 CN (Figure S4). This indicates that Cu 2+ might not have induced hydrolysis of imine.…”

Interrogating the nature of aggregates formed in a model azine based ESIPT coupled AIE active probe: stark differences in photodynamics in the solid state and aggregates in water

“…Quite surprisingly, although the coupling of ESIPT with other interesting photoprocesses has been investigated thoroughly over the years, 14–18 the same has not been done for the coupling of AIE with ESIPT apart from basic steady state spectral studies. 19–23 Although sophisticated steady-state spectroscopic experiments (evolution of the steady state spectrum upon varying the percentage of water in a binary solvent system) as well as other characterization type experiments (DLS, SEM, etc. ) have been conducted to prove the AIE processes in many reports, 7,24,25 no spectrodynamic studies have been conducted to identify how the ESIPT process is modulated in the aggregated form.…”