Ultrafast Size Expansion and Turn‐On Luminescence of Atomically Precise Silver Clusters by Hydrogen Sulfide. (3rd March 2021)

• Record Type: Journal Article
• Authors: He, Wei‐Miao; Zhou, Zhe; Han, Zhen; Li, Si; Zhou, Zhan; Ma, Lu‐Fang; Zang, Shuang‐Quan
• Is Part Of: Angewandte Chemie. Volume 133:Number 15(2021)
• Page Start: 8586
• Page End: 8590
• Publication Date: 2021-03-03
• Subjects: cluster to cluster transformation -- fluorescent probe -- hydrogen sulfide -- silver(I) clusters; Chemistry -- Periodicals; 540
• DOI: 10.1002/ange.202100006
• Languages: English
• ISSNs: 0044-8249

Abstract

Abstract: 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 {[Ag18 (S t Bu)10 (NO3 )8 (CH3 CN)2 (H2 O)2 ] ⋅ [Ag18 (S t Bu)10 (NO3 )8 (CH3 CN)6 ]} n (abbreviated as Ag18 ) in which two similar Ag18 clusters are assembled by NO3 − anions. The solution containing Ag18 reacted with hydrogen sulfide with controlled concentration, promptly producing another identifiable and bright red‐emitting high‐nuclearity silver(I) cluster, Ag62 (S)13 (S t Bu)32 (NO3 )4 (abbreviated as Ag62 ). 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 H2 S 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. Abstract : Two similar Ag18 clusters are assembled via NO3 − anions to form a chain‐like thiolated Ag I complex (abbreviated as Ag18 ). The solution containing Ag18 reacted with H2 S with controlled concentration, promptly producing another identifiable and bright red‐emitting high‐nuclearity silver(I) cluster Ag62 . Based on this cluster transformation, an ultra‐sensitive turn‐on sensor was developed to the detection of H2 S gas with an ultrafast response time (30 s) at a low concentration (0.13 ppm).