Abstract
AbstractHerein, we have designed and synthesized a series of MeO‐rofecoxib based fluorophore (MORF1–6) for exploiting new promising mechanochromic luminescent (MCL) materials. Among them, MORF1 and MORF3 exhibit aggregation‐induced emission (AIE) effects when the substituent is located at the ortho‐position on the benzene ring of b. Meanwhile, by changing the type and position of the substituent, the corresponding compounds MORF2, MORF4, MORF5, MORF6 show aggregation caused‐quenching (ACQ) behavior. These results demonstrate that the position and type of the substituent have a great effect on their fluorescent properties. Furthermore, an X‐ray crystal structure analysis of MORF3 revealed that the intermolecular π‐π stacking was suppressed and intramolecular hydrogen bonding were formed, which could effectively restrict the molecular motions, thus causing typical AIE effect and mechanochromic property. Finally, a re‐writable data recording device was fabricated using MORF3 as the active material. Our molecular design strategy may provide a new avenue for achieving efficient MCL materials.
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