4081-46-3Relevant articles and documents
Ultrafast Size Expansion and Turn-On Luminescence of Atomically Precise Silver Clusters by Hydrogen Sulfide
He, Wei-Miao,Zhou, Zhe,Han, Zhen,Li, Si,Zhou, Zhan,Ma, Lu-Fang,Zang, Shuang-Quan
, p. 8505 - 8509 (2021)
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 AgI 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.
Du, Shaowu,Zhu, Nianyong,Chen, Pencheng,Wu, Xintao
, p. 2489 - 2494 (1992)
Tandem Silver Cluster Isomerism and Mixed Linkers to Modulate the Photoluminescence of Cluster-Assembled Materials
Huang, Ren-Wu,Dong, Xi-Yan,Yan, Bing-Jie,Du, Xiang-Sha,Wei, Dong-Hui,Zang, Shuang-Quan,Mak, Thomas C. W.
, p. 8560 - 8566 (2018)
Silver chalcogenolate cluster assembled materials (SCAMs) are a category of promising light-emitting materials the luminescence of which can be modulated by variation of their building blocks (cluster nodes and organic linkers). The transformation of a singly emissive [Ag12(SBut)8(CF3COO)4(bpy)4]n (Ag12bpy, bpy=4,4′-bipyridine) into a dual-emissive [(Ag12(SBut)6(CF3COO)6(bpy)3)]n (Ag12bpy-2) via cluster-node isomerization, the critical importance of which was highlighted in dictating the photoluminescence properties of SCAMs. Moreover, the newly obtained Ag12bpy-2 served to construct visual thermochromic Ag12bpy-2/NH2 by a mixed-linker synthesis, together with dichromatic core–shell Ag12bpy-2@Ag12bpy-NH2-2 via solvent-assisted linker exchange. This work provides insight into the significance of metal arrangement on physical properties of nanoclusters.
Assembly of Atomically Precise Silver Nanoclusters into Nanocluster-Based Frameworks
Alhilaly, Mohammad J.,Huang, Ren-Wu,Naphade, Rounak,Alamer, Badriah,Hedhili, Mohamed Nejib,Emwas, Abdul-Hamid,Maity, Partha,Yin, Jun,Shkurenko, Aleksander,Mohammed, Omar F.,Eddaoudi, Mohamed,Bakr, Osman M.
, p. 9585 - 9592 (2019)
Here, we demonstrate an approach to synthesizing and structurally characterizing three atomically precise anion-templated silver thiolate nanoclusters, two of which form one- and two-dimensional structural frameworks composed of bipyridine-linked nanocluster nodes (referred to as nanocluster-based frameworks, NCFs). We describe the critical role of the chloride (Cl-) template in controlling the nanocluster's nuclearity with atomic precision and the effect of a single Ag atom difference in the nanocluster's size in controlling the NCF dimensionality, modulating the optical properties, and improving the thermal stability. With atomically precise assembly and size control, nanoclusters could be widely adopted as building blocks for the construction of tunable cluster-based framework materials.
