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

Beitrag in einer Fachzeitschrift
(Originalarbeit)


Details zur Publikation

Autor(en): Milde M, Dembski S, Osvet A, Batentschuk M, Winnacker A, Sextl G
Zeitschrift: Materials Chemistry and Physics
Verlag: Elsevier Ltd
Jahr der Veröffentlichung: 2014
Band: 148
Heftnummer: 3
Seitenbereich: 1055-1063
ISSN: 0254-0584
Sprache: Englisch


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-Autoren / FAU-Herausgeber

Batentschuk, Miroslaw PD Dr.-Ing.
Lehrstuhl für Werkstoffwissenschaften (Materialien der Elektronik und der Energietechnologie)
Osvet, Andres Dr.
Lehrstuhl für Werkstoffwissenschaften (Materialien der Elektronik und der Energietechnologie)
Winnacker, Albrecht Prof. Dr.
Technische Fakultät


Autor(en) der externen Einrichtung(en)
Fraunhofer Institut für Silicatforschung (ISC)
Julius-Maximilians-Universität Würzburg


Zitierweisen

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.

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