Adaptive hydrogen-bonding strategy driven 0D manganese-based metal halides with multifunctional fluorescent applications

Herein, we designed organic cations with multiple donor and acceptor sites of hydrogen bonds and reported reversible luminescence modulation in 0D manganese-based metal halides via water-driven in situ structural transformations with the above adaptive hydrogen-bonding cation. The non-fluorescent-to-fluorescent transition at human body temperature highlights their high sensitivity and environmental adaptability as promising candidates for advanced fluorescence-based sensing and anti-counterfeiting applications. Besides, the high photoluminescence quantum yield  and great stability of fluorescent (BBD)MnBr4 provide a way to explore OIHMHs pumped by green light for white LEDs.