Mesoporous silica encapsulating upconversion luminescence rare-earth fluoride nanorods for secondary excitation

Langmuir : the ACS Journal of Surfaces and Colloids
Jianping YangDongyuan Zhao

Abstract

Mesoporous silica encapsulating upconversion luminescence NaYF(4) nanorods with uniform core-shell structures have been successfully synthesized by the surfactant-assistant sol-gel process. The thickness of ordered mesoporous silica shells can be adjusted from 50 to 95 nm by varying the amount of hydrolyzed silicate oligomer precursors from tetraethyl orthosilicate (TEOS), which further influences the BET surface area, pore volume, and the luminescence intensity. After coated with mesoporous silica shells, the hydrophobic nanorods is rendered to hydropholic simultaneously. The obtained beta-NaYF(4)@SiO(2)@mSiO(2) core-shell nanorods possess high surface area (71.2-196 m(2) g(-1)), pore volume (0.07-0.17 cm(3) g(-1)), uniform pore size distribution (2.3 nm), and accessible channels. Furthermore, the uniform core-shell nanorods show strong upconversion luminescence property similar to the hexagonal upconversion cores. The open mesopores can not only provide convenient transmission channels but also offer the huge location for accommodation of large molecules, such as fluorescent dyes and quantum dots. The secondary-excitation fluorescence of Rhodamine B is generated from the upconversion rare-earth fluoride nanorods cores to the ...Continue Reading

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Citations

Oct 5, 2011·Chemical Communications : Chem Comm·Jianping YangDongyuan Zhao
Apr 12, 2013·Nanoscale Research Letters·Anees A AnsariMahmoud Hezam
May 22, 2013·Dalton Transactions : an International Journal of Inorganic Chemistry·Yuan WuJun Lin
May 30, 2013·Dalton Transactions : an International Journal of Inorganic Chemistry·Fei HePiaoping Yang
Jan 9, 2016·Analytical Chemistry·Yong-Xiang WuWeihong Tan
Jan 21, 2014·Academic Radiology·Sheng-Min LanRuey-Mo Lin
Mar 13, 2014·Chemical Reviews·Guanying ChenXiaoyuan Chen
Jul 31, 2013·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·Jin ZhangLigong Zhang
Oct 23, 2012·Chemistry, an Asian Journal·Tatsuo Kimura, Yusuke Yamauchi
Sep 22, 2012·Chemistry : a European Journal·Jianping YangDongyuan Zhao
Oct 20, 2011·Chemical Society Reviews·Jing ZhouFuyou Li
Jul 17, 2013·Langmuir : the ACS Journal of Surfaces and Colloids·Zhiyao HouJun Lin
Dec 17, 2016·Accounts of Chemical Research·Qianqian SuFuyou Li
Jun 28, 2012·Sensors·Jiao Chen, Julia Xiaojun Zhao
Feb 7, 2014·Journal of Materials Chemistry. B, Materials for Biology and Medicine·J Cichos, M Karbowiak
Apr 28, 2014·Journal of Materials Chemistry. B, Materials for Biology and Medicine·Xiaoqing HuNengqin Jia
Nov 8, 2016·Nanotechnology·Masfer H AlkahtaniPhilip R Hemmer
Aug 5, 2014·Science and Technology of Advanced Materials·Xiaohong WangSheng Han
Apr 30, 2021·Pharmacology & Therapeutics·Pooja JainMunira Momin
Jun 5, 2020·Langmuir : the ACS Journal of Surfaces and Colloids·Vaidas KlimkeviciusArturas Katelnikovas

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