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1Aggregation-induced barrier to oxygen——a new AIE mechanism for metal clusters with phosphorescence显示文摘Metal clusters are useful phosphors,but highly luminescent examples are quite rare.Usually,the phosphorescence of metal clusters is hindered by ambient O_(2) molecules.Transforming this disadvantage into an advantage for meaningful applications of metal clusters presents a formidable challenge.In this work,we used ligand engineering to judiciously prepare colour-tuneable and brightly emitting Cu(I)clusters that are ultrasensitive to O_(2) upon dispersion in a fluid solution or in a solid matrix.When the O_(2) scavenger dimethyl sulfoxide(DMSO)was used as the solvent,joint photo-and oxygen-controlled multicolour switches were achieved for the first time for metal cluster-based photopatterning and photo-anticounterfeiting.More importantly,an aggregation-induced barrier to oxygen,a new aggregation-induced emission mechanism for metal clusters,was proposed,providing a new pathway to realizing the intense emission of metal clusters in the aggregated state.These results are expected to promote the application of metal clusters and enrich the luminescence theory of metal cluster aggregates.Yan Jin Qiu-Chen Peng Si Li Hui-Fang Su Peng Luo Ming Yang Xin Zhang Kai Li Shuang-Quan Zang Ben Zhong Tang Thomas C.W.Mak 2022National Science Review2022,9,8:0
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