期刊
ADVANCED SCIENCE
卷 6, 期 2, 页码 -出版社
WILEY
DOI: 10.1002/advs.201801304
关键词
aggregation-induced emission; cluster compounds; crystal transformation; host-guest chemistry; metal-organic frameworks
资金
- National Science Fund for Distinguished Young Scholars [21825106]
- National Natural Science Foundation of China [21671175, 21501150, 21371153, 51502079]
- Research Grants Council of Hong Kong [16301614, 16305015, N_HKUST604/14]
- Innovation and Technology Commission [ITC-CNERC14SC01]
Utilizing aggregation-induced emission luminogens (AIEgens) as ligands has proven to be an effective strategy for constructing metal-organic frameworks (MOFs) with intense luminescent properties. However, highly luminescent AIEgen-based MOFs with adjustable emission properties are rarely achieved because of the rigid conformation of AIEgens in the crystalline state. Here, a dual-node 3D silver chalcogenolate cluster MOF (1) is designed and synthesized, where the AIE ligand shows relatively flexible and rotatable conformations. The conformations of AIE ligands in 1 are switchable by the absorption/desorption of guest molecules. As a result, 1 exhibited not only intense but also guest molecule switched luminescent properties. More importantly, the switching rate is tunable by using different guest molecules. 1 provides a unique visualized prototype to understand the mechanism of guest-triggered aggregation-induced emission in MOFs.
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