Polymer-assisted solegel process for the preparation of photostimulable core/shell structured SiO2/Zn2SiO4:Mn2+ particles

Journal article
(Original article)


Publication Details

Author(s): Milde M, Dembski S, Osvet A, Batentschuk M, Winnacker A, Sextl G
Journal: Materials Chemistry and Physics
Publisher: Elsevier Ltd
Publication year: 2014
Volume: 148
Journal issue: 3
Pages range: 1055-1063
ISSN: 0254-0584
Language: English


Abstract

In this study the SiO2/Zn2SiO4:Mn2+ core/shell particles with diameters of about 200 nm were prepared by a modified Pechini sol–gel method. The focus of the study was on the investigation of the shell formation mechanism and on the determination of key synthesis parameters. A precise adjustment of the particle structure is crucial for optical properties. The influence of the organic additives, the pH value of the coating solution and the annealing temperature on the properties of the resulting particles was evaluated. The roles of the influential factors were studied in detail using transmission electron microscopy, X-ray diffraction, Fourier transform infrared and nuclear magnetic resonance spectroscopy. The most homogeneous coating was achieved by employing polyethylene glycol (PEG) at a pH value of 1. The application of citric acid in combination with PEG caused the formation of inhomogeneous shells. The particles showed photoluminescence and photostimulable luminescence of increasing intensities with rising annealing temperatures (1100 °C). These core/shell structured particles have the potential to serve as luminescent labeling agents for biomedical applications.


FAU Authors / FAU Editors

Batentschuk, Miroslaw PD Dr.-Ing.
Institute Materials for Electronics and Energy Technology (i-MEET)
Osvet, Andres Dr.
Institute Materials for Electronics and Energy Technology (i-MEET)
Winnacker, Albrecht Prof. Dr.
Technische Fakultät


External institutions with authors

Fraunhofer Institut für Silicatforschung (ISC)
Julius-Maximilians-Universität Würzburg


Research Fields

Neue Materialien und Prozesse
Research focus area of a faculty: Technische Fakultät


How to cite

APA:
Milde, M., Dembski, S., Osvet, A., Batentschuk, M., Winnacker, A., & Sextl, G. (2014). Polymer-assisted solegel process for the preparation of photostimulable core/shell structured SiO2/Zn2SiO4:Mn2+ particles. Materials Chemistry and Physics, 148(3), 1055-1063. https://dx.doi.org/10.1016/j.matchemphys.2014.09.017

MLA:
Milde, Moritz, et al. "Polymer-assisted solegel process for the preparation of photostimulable core/shell structured SiO2/Zn2SiO4:Mn2+ particles." Materials Chemistry and Physics 148.3 (2014): 1055-1063.

BibTeX: 

Last updated on 2018-12-11 at 08:36