Preparation and Characteristics of Core-Shell Structure Eu(DBM)3phen@SiO2 Micro-Sphere

被引：7

作者：

Yu, Mingguang ^{[1
]}

Chen, Guangxue ^{[1
]}

Liu, Jiangwen ^{[1
]}

Tang, Baoling ^{[1
]}

Huang, Wentao ^{[1
]}

机构：

[1] S China Univ Technol, State Key Lab Pulp & Papermaking Engn, Guangzhou 510640, Guangdong, Peoples R China

来源：

JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY | 2013年 / 29卷 / 09期

基金：

中国国家自然科学基金;

关键词：

Core-shell; Micro-sphere; Rare earth complex; SiO2; Luminescent; MODIFIED SPONTANEOUS EMISSION; LUMINESCENCE;

D O I：

10.1016/j.jmst.2013.04.023

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Sphere-shape Eu(DBM)(3)Phen@SiO2 nanoparticles were fabricated by employing a modified alkaline catalyzed hydrolysis and precipitation method. The silica coated on the particles surface was obtained by means of hydrolysis and condensation of tetraethyl orthosilicate (TEOS). In this study, the particles morphology was analyzed by scanning electron microscopy (SEM) and the surface composition of samples was characterized by X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FT-IR). It is confirmed that the SiO2 shell has been coated on the rare earth complexes successfully. Moreover, the near-infrared photoluminescence emission analysis on the nanoparticles showed that the SiO2 shell would increase the luminescence intensity of Eu(DBM)(3)Phen. This is primarily due to the reason that SiO2 shell with chemical inertness can effectively reduce the ion Eu3+ non-radiation transition probabilities, as well as the probability of rare earth luminescence quenching caused by the external medium.

引用

页码：801 / 805

页数：5

共 20 条

[1] Acid-based synthesis of monodisperse rare-earth-doped colloidal SiO2 spheres [J].