Mechanofluorochromic Luminescence, and Al³⁺Detection of an Aggregation-Induced Emission-Active Salicylaldehyde-Based Acylhydrazone Derivative

AIE-active non-planar phenothiazine-based derivatives with mechanical-induced emission enhancement characteristics

“…However, the diffraction peaks almost entirely disappeared for the ground powders, suggesting that the initial ordered packing was destroyed under external force stimuli. Accordingly, upon grinding, a phase transition from the ordered crystalline to the amorphous phase is shown to take place, 27,32,35,36 as also proved with the FESEM results of EPMBS and EPMMBS in their different solid states (Fig. 8).…”

“…That is to say, the weighted mean lifetimes of the ground solid were longer than those in the pristine solid state, which was caused by the change of molecular arrangement after grinding. 32,33 Furthermore, the emitting color and intensity of the ground solids could be fully restored upon fuming with DCM vapor for a few minutes, which can be repeated many times (Fig. S10, ESI†), indicating a reversible mechanofluorochromic process.…”