Open AccessHigh-efficient fabrication of core-shell-shell structured SiO 2 @GdPO 4 :Tb@SiO 2 nanoparticles with improved luminescence
Author(s) -
He Bai,
Yunjiang Yang,
Jinrong Bao,
Anping Wu,
Yan Qiao,
Xueyuan Guo,
Mingyuan Wang,
Wenxian Li,
Ying Li,
Xiaowei Zhu
Publication year - 2020
Publication title -
royal society open science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.84
H-Index - 51
ISSN - 2054-5703
DOI - 10.1098/rsos.192235
Subject(s) - nanoparticle , luminescence , shell (structure) , materials science , quenching (fluorescence) , nanotechnology , fabrication , core (optical fiber) , chemical engineering , fluorescence , composite material , optoelectronics , optics , medicine , physics , alternative medicine , engineering , pathology
SiO 2 @GdPO 4 :Tb@SiO 2 nanoparticles with core-shell-shell structure were successfully synthesized by a cheap silane coupling agent grafting method at room temperature. This method not only homogeneously coated rare-earth phosphate nanoparticles on the surface of silica spheres but also saved the use of rare-earth resources. The obtained nanoparticles consisted of SiO 2 core with a diameter of approximately 210 nm, GdPO 4 :Tb intermediate shell with thickness of approximately 7 nm, and SiO 2 outer shell with thickness of approximately 20 nm. This unique core-shell-shell structured nanoparticles exhibited strong luminescence properties compared with GdPO 4 :Tb nanoparticles. The core-shell-shell structured nanoparticles can effectively quench the intrinsic fluorescence of bovine serum albumin through a static quenching mode. The as-synthesized nanoparticles show great potential in biological cell imaging and cancer treatment.