首页|Vapor-and temperature-triggered reversible optical switching for multi-response Cu8 cluster supercrystals
Vapor-and temperature-triggered reversible optical switching for multi-response Cu8 cluster supercrystals
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Multi-response metal cluster supercrystal materials,which can simultaneously display various such as color,photoluminescence,changes by bearing only one stimulus,have huge potential as stimuli-responsive intelligent material,but are rarely reported.Here,we report three Cu8 cluster supercrystals,Cu8-1,Cu8-2,and Cu8-3,with homologous cluster molecule units[Cu8(PNP)3(EPPTA)6](PF6)2 but distinct packing.These supercrystals display bright μs-long photoluminescence with a high quantum yield of up to 26.6％in solid-state at room temperature and aggregation-induced emission(AIE)characteristic.Supe-rior thermal stability and blue-excitable bright yellow emission make Cu8-3 serve as a yellow phosphor for white light-emitting diode.Furthermore,upon being stimulated by solvent vapor and temperature,re-versible supercrystal-to-supercrystal transformations can be witnessed accompanied by remarkable color and luminescence switching.This work not only provides a kind of Cu cluster supercrystal model but also motivates the further development of metal clusters in multi-response materials.
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