Synthesis and Luminescence Properties of Core-Shell-Shell Composites: SiO2 @PMDA-Si-Tb@SiO2 and SiO2@PMDA-Si-Tb-phen@SiO2

被引：12

作者：

Feng, Lina ^{[1
]}

Li, Wenxian ^{[1
]}

Bao, Jinrong ^{[1
]}

Zheng, Yushan ^{[2
]}

Li, Yilian ^{[1
]}

Ma, Yangyang ^{[1
]}

Yang, Kuisuo ^{[1
]}

Qiao, Yan ^{[1
]}

Wu, Anping ^{[1
]}

机构：

[1] Inner Mongolia Univ, Inner Mongolia Key Lab Chem & Phys Rare Earth Mat, Sch Chem & Chem Engn, Hohhot 010021, Peoples R China

[2] Inner Mongolia Autonomous Reg Food Inspect Test C, Hohhot 010010, Peoples R China

来源：

NANOMATERIALS | 2019年 / 9卷 / 02期

关键词：

2,5-bis((3-(triethoxysilyl)propyl)carbamoyl)terephthalic acid (PMDA-Si); core-shell composite; core-shel-shell composite; silica shell; photoluminescence; lifetime; IRON-OXIDE NANOPARTICLES; PHOTOLUMINESCENCE PROPERTIES; MABA-SI; FABRICATION; DESIGN; FUNCTIONALIZATION; NANOCOMPOSITES; MICROSPHERES; NANOCATALYST; PERCHLORATE;

D O I：

10.3390/nano9020189

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Two novel core-shell composites SiO2@PMDA-Si-Tb, SiO2@PMDA-Si-Tb-phen with SiO2 as the core and terbium organic complex as the shell, were successfully synthesized. The terbium ion was coordinated with organic ligand forming terbium organic complex in the shell layer. The bi-functional organosilane ((HOOC)(2)C6H2(CONH(CH2)(3)Si(OCH2CH3)(3))(2) (abbreviated as PMDA-Si) was used as the first ligand and phen as the second ligand. Furthermore, the silica-modified SiO2@PMDA-Si-Tb@SiO2 and SiO2@PMDA-Si-Tb-phen@SiO2 core-shell-shell composites were also synthesized by sol-gel chemical route. An amorphous silica shell was coated around the SiO2@PMDA-Si-Tb and SiO2@PMDA-Si-Tb-phen core-shell composites. The core-shell and core-shell-shell composites both exhibited excellent luminescence in solid state. The luminescence of core-shell-shell composites was stronger than that of core-shell composites. Meanwhile, an improved luminescence stability property for the core-shell-shell composites was found in the aqueous solution. The core-shell-shell composites exhibited bright luminescence, high stability, long lifetime, and good solubility, which may present potential applications in the bio-medical field.

引用

页数：18