Ultrafast Size Expansion and Turn-on Luminescence of Atomically Precise Silver Clusters by Hydrogen Sulfide.

Ultrafast Size Expansion and Turn-on Luminescence of Atomically Precise Silver Clusters by Hydrogen Sulfide.
Angew Chem Int Ed Engl. 2021 Jan 23;:
Authors: Zang SQ, He WM, Zhou Z, Han Z, Li S, Zhou Z, Ma LF
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(StBu)10(NO3)8(CH3CN)2(H2O)2]·[Ag18(StBu)10(NO3)8(CH3CN)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(StBu)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 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.
PMID: 33484217 [PubMed - as supplied by publisher]

Source: Angewandte Chemie - January 23, 2021 Category: Chemistry Authors: Zang SQ, He WM, Zhou Z, Han Z, Li S, Zhou Z, Ma LF Tags: Angew Chem Int Ed Engl Source Type: research