Jump to main content
Jump to site search


Phase separation strategy to facilely form fluorescent [Ag2]2+/[Agm]n+ quantum clusters in boro-alumino-silicate multiphase glasses

Author affiliations

Abstract

By adjusting the content of ZnF2–SrF2/ZnO–SrO, a series of SiO2–Al2O3–B2O3–Na2O–ZnO/ZnF2–SrO/SrF2–Ag multiphase glasses was designed and prepared via a melt-quenching method. Under a phase separation strategy, negatively charged tetrahedrons ([BO4], [ZnO4]2−, and [AlO4]) can be generated to stabilize different silver species (Ag+ ions; [Ag2]2+ pairs; [Agm]n+ quantum clusters ([Agm]n+ QCs)) in B2O3-rich and ZnO–Al2O3 rich sub-phases. The B2O3-rich sub-phase has a high solubility for Ag+ ions and [Agm]n+ QCs. The fluoride-rich phase shows a good ability to extract Na+ from the B2O3-rich sub-phase, significantly affects the solubility of Ag+ in the B2O3-rich sub-phase, and eventually determines the aggregation from Ag+ ions and Ag0 atom to [Agm]n+ QCs. The ZnO–Al2O3-rich or ZnO–SiO2-rich (i.e. SiO2-rich in GZnOSrO) phase has a relatively high solubility for [Ag2]2+ pairs. The Ag+/[Ag2]2+/[Agm]n+ QC fluorescent centers were identified by spectroscopic analysis, where the fluorescence bands are located in the ultraviolet, green-white and orange spectral regions, respectively. The fluorescent quantum yield (QY) of the [Agm]n+ QCs can be improved to 55.7%, and the combination of these three luminescent centers can achieve white light emission.

Graphical abstract: Phase separation strategy to facilely form fluorescent [Ag2]2+/[Agm]n+ quantum clusters in boro-alumino-silicate multiphase glasses

Back to tab navigation

Supplementary files

Publication details

The article was received on 17 Jul 2018, accepted on 29 Aug 2018 and first published on 29 Aug 2018


Article type: Paper
DOI: 10.1039/C8CP04536D
Citation: Phys. Chem. Chem. Phys., 2018, Advance Article
  •   Request permissions

    Phase separation strategy to facilely form fluorescent [Ag2]2+/[Agm]n+ quantum clusters in boro-alumino-silicate multiphase glasses

    X. Chen, J. Zhao, X. Xu, K. Ren, X. Luo, X. Sun, X. Qiao, X. Fan, G. Qian and G. Han, Phys. Chem. Chem. Phys., 2018, Advance Article , DOI: 10.1039/C8CP04536D

Search articles by author

Spotlight

Advertisements