Formation of Light‐Emitting Ag₂ and Ag₃ Species in the Course of Condensation of Ag Atoms with Ar

Abstract

Fluorescent clusters: The agglomeration of Ag clusters resulting from the codeposition of Ag and Ar atoms onto a cold substrate is accompanied by light emission from deexcitation of intermediately formed electronically excited Ag2* and Ag3* species. The yield of chemiluminescence was investigated as a function of the deposition rates of Ag and Ar. The relative concentrations of Ag, Ag2, Ag3, and Ag8 species were monitored by means of their fluorescence spectra, and it is concluded that the light‐emitting species are created by aggregation of Agn clusters with n>8.

Fluorescent Au(i)@Ag2/Ag3giant cluster for selective sensing of mercury(ii) ion

“…54 Again, Hg(II) induced aggregation of silver particles is also found in the literature. With the increase of the n value in the Ag n (n = number of atoms), a red shift of emission maxima has already been documented.…”

“…10] to monitor the Hg(II) induced quenching of fluorescence. However, the red shift is observed due to the aggregation of emissive silver clusters 54 by Hg(II) present with the disintegrated particles. It is due to a heavy metal effect associated with spin-orbit coupling.…”

Water‐Soluble Fluorescent Silver Nanoclusters

“…[8] Chemiluminescence due to the formation of excited Ag Ar has also been reported. [9] Silver nanoclusters have also been observed in frozen solutions and zeolites. [10,11] These extreme conditions, however, are not amenable to real world applications.…”

Tunability of the optical absorption in small silver cluster-polymer hybrid systems

“…Experimentally these clusters have been studied in stabilizing rare-gas matrices, as free silver clusters in the gas phase dissociate by fragmentation. [12][13][14][15] Small silver clusters exhibit interesting luminescence and especially fluorescence properties that can be tuned by their size and chemical environment. [16][17][18] Interesting, but not very well understood, experimental observations on the tunability of their optical properties as a function of the chemical environment have been reported.…”