| Title: | Hypersensitive dual-function luminescence switching of a silver-chalcogenolate cluster-based metal-organic framework |
| Author(s): | Huang RW; Wei YS; Dong XY; Wu XH; Du CX; Zang SQ; Mak TCW; |
| Address: | "College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450001, China. Department of Chemistry and Center of Novel Functional Molecules, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR. China" |
| ISSN/ISBN: | 1755-4349 (Electronic) 1755-4330 (Linking) |
| Abstract: | "Silver(i) chalcogenide/chalcogenolate clusters are promising photofunctional materials for sensing, optoelectronics and solar energy harvesting applications. However, their instability and poor room-temperature luminescent quantum yields have hampered more extensive study. Here, we graft such clusters to adaptable bridging ligands, enabling their interconnection and the formation of rigid metal-organic frameworks. By controlling the spatial separation and orientation of the clusters, they then exhibit enhanced stability (over one year) and quantum yield (12.1%). Ultrafast dual-function fluorescence switching (<1 s) is also achieved, with turn-off triggered by O(2) and multicoloured turn-on by volatile organic compounds. Single-crystal X-ray diffraction of the inclusion materials, obtained by single-crystal-to-single-crystal transformation, enables precise determination of the position of the small molecules within the framework, elucidating the switching mechanism. The work enriches the cluster-based metal-organic framework portfolio, bridges the gap between silver chalcogenide/chalcogenolate clusters and metal-organic frameworks, and provides a foundation for further development of functional silver-cluster-based materials" |
| Notes: | "PubMed-not-MEDLINEHuang, Ren-Wu Wei, Yong-Sheng Dong, Xi-Yan Wu, Xiao-Hui Du, Chen-Xia Zang, Shuang-Quan Mak, Thomas C W eng Research Support, Non-U.S. Gov't England 2017/06/24 Nat Chem. 2017 Jul; 9(7):689-697. doi: 10.1038/nchem.2718. Epub 2017 Feb 13" |
