Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 60, Issue 15, Pages 8505-8509Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.202100006
Keywords
cluster to cluster transformation; fluorescent probe; hydrogen sulfide; silver(I) clusters
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Funding
- National Natural Science Foundation of China [92061201, 21825106, 21801227]
- Program for Science & Technology Innovation Talents in Universities of Henan Province [164100510005]
- Program for Innovative Research Team (in Science and Technology) in Universities of Henan Province [19IRTSTHN022]
- Zhengzhou University
- Scientific Research Fund of Henan Provincial Education Department [21A150003]
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The study successfully prepared high-nuclearity silver(I) clusters Ag-18 and Ag-62, and developed a highly sensitive H2S gas sensor based on their transformation, providing insights into the growth of metal clusters and their luminescent sensing applications.
The formation of high-nuclearity silver(I) clusters remains elusive and their potential applications are still underdeveloped. Herein, we firstly prepared a chain-like thiolated Ag-I complex {[Ag-18((SBu)-Bu-t)(10)(NO3)(8)(CH3CN)(2)(H2O)(2)] . [Ag-18((SBu)-Bu-t)(10)(NO3)(8)(CH3CN)(6)]}(n) (abbreviated as Ag-18) in which two similar Ag-18 clusters are assembled by NO3- anions. The solution containing Ag-18 reacted with hydrogen sulfide with controlled concentration, promptly producing another identifiable and bright red-emitting high-nuclearity silver(I) cluster, Ag-62(S)(13)((SBu)-Bu-t)(32)(NO3)(4) (abbreviated as Ag-62). We tracked the transformation using time-dependent electrospray ionization mass spectrometry (ESI-MS), UV/Vis absorption and photoluminescence spectra. Based on this cluster transformation, we further developed an ultra-sensitive turn-on sensor detecting H2S gas with an ultrafast response time (30 s) at a low detection limit (0.13 ppm). This work opens a new way of understanding the growth of metal clusters and developing their luminescent sensing applications.
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