Self-Assembly of Asymmetrically Functionalized Titania Nanoparticles into Nanoshells

被引：4
|
作者：
Svensson, Fredric G. [1 ]
Seisenbaeva, Gulaim A. [1 ]
Kotov, Nicholas A. [1 ,2 ,3 ]
Kessler, Vadim G. [1 ]
机构：
[1] Swedish Univ Agr Sci SLU, Dept Mol Sci, Box 7015, S-75007 Uppsala, Sweden
[2] Univ Michigan, Dept Chem Engn, Ann Arbor, MI 48109 USA
[3] Univ Michigan, Biointerfaces Inst, Ann Arbor, MI 48109 USA
来源：
MATERIALS | 2020年 / 13卷 / 21期
基金：
瑞典研究理事会;
关键词：
self-assembly; nanoshells (hollow spheres); janus particles; pickering emulsion; JANUS PARTICLES; TIO2; NANOSCALE; DFT;
D O I：
10.3390/ma13214856
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Titania (anatase) nanoparticles were anisotropically functionalized in water-toluene Pickering emulsions to self-assemble into nanoshells with diameters from 500 nm to 3 mu m as candidates for encapsulation of drugs and other compounds. The water-phase contained a hydrophilic ligand, glucose-6-phosphate, while the toluene-phase contained a hydrophobic ligand, n-dodecylphosphonic acid. The addition of a dilute sodium alginate suspension that provided electrostatic charge was essential for the self-limited assembly of the nanoshells. The self-assembled spheres were characterized by scanning electron microscopy, elemental mapping, and atomic force microscopy. Drug release studies using tetracycline suggest a rapid release dominated by surface desorption.
引用
收藏
页码：1 / 11
页数：11
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