Fluorenyl-difluoroboron-β-diketonates with multi-stimuli fluorescent response behavior and their applications in a thermochromic logic gate device

Materials exhibiting multi-stimuli responsive luminescence are useful for applications in information encryption, fluorescence sensors, and optoelectronic devices. Herein, we report the development of fluorenyl-difluoroboron-beta-diketonates that provide multi-stimuli responsive fluorescence. These complexes exhibit weak fluorescence in a diluted solution and aggregation-induced emission in the solid state. The solid-state emission color of these complexes can be tuned by grinding-fuming and grinding-heating cycles. Our experimental data reveal that propeller-shaped donor-acceptor structure and loose molecular packing structure induced by long alkyl chains are the key factors related to the stimuli response sensitivity. Furthermore, we demonstrate the information process applications of these materials for use in a thermochromic logic gate device.

Automated summary

This study reports a type of fluorescent material displaying multi-stimuli responsive luminescence, with the emission color in the solid state tunable by grinding-fuming and grinding-heating cycles. The sensitivity of fluorescence response is attributed to the propeller-shaped donor-acceptor structure and loose molecular packing structure induced by long alkyl chains. Additionally, the materials demonstrate potential applications in thermochromic logic gate devices for information processing.