Polymer-assisted sol–gel process for the preparation of photostimulable core/shell structured SiO2/Zn2SiO4:Mn2+ particles
Polymer-assisted sol–gel process for the preparation of photostimulable core/shell structured SiO2/Zn2SiO4:Mn2+ particles
复制标题
聚合物辅助溶胶法制备光激励核/壳结构SiO2/Zn2SiO4:Mn2颗粒
DOI:
10.1016/j.matchemphys.2014.09.017
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发表时间:
2014
影响因子:
4.6
通讯作者:
Gerhard Sextl
中科院分区:
文献类型:
--
作者:
Moritz Milde;Sofia Dembski;Andre Osvet;Miroslaw Batentschuk;Albrecht Winnacker;Gerhard Sextl
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.
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DOI:
10.1107/s0365110x6500244x
发表时间:
1965-01-01
期刊:
ACTA CRYSTALLOGRAPHICA
影响因子:
--
作者:
JOHNSON, CK
通讯作者:
JOHNSON, CK
DOI:
--
发表时间:
2005
期刊:
影响因子:
--
作者:
A. Patra;G. Baker;Sheila N. Baker
通讯作者:
Sheila N. Baker
DOI:
--
发表时间:
1992
期刊:
影响因子:
--
作者:
Å. Wendsjö;J. Lindgren;C. Paluszkiewicz
通讯作者:
C. Paluszkiewicz
DOI:
--
发表时间:
2007
期刊:
影响因子:
--
作者:
A. Manavbasi;J. Lacombe
通讯作者:
J. Lacombe
影响因子:
9.9
作者:
Dembski, Sofia;Rupp, Sabine;Winnacker, Albrecht
通讯作者:
Winnacker, Albrecht