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A Uniform Sub-50 nm-Sized Magnetic/Upconversion Fluorescent Bimodal Imaging Agent Capable of Generating Singlet Oxygen by Using a 980 nm Laser.
MedLine Citation:
PMID:  22544381     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Upconverting nanoparticles (UCNPs) with fascinating properties hold great potential as nanotransducers for solving the problems that traditional photodynamic therapy (PDT) has been facing. In this report, by using well-selected bifunctional gadolinium (Gd)-ion-doped UCNPs and water-soluble methylene blue (MB) combined with the water-in-oil reverse microemulsion technique, we have succeeded in developing a new kind of UCNP/MB-based PDT drug, NaYF(4) :Er/Yb/Gd@SiO(2) (MB), with a particle diameter less than 50 nm. Great efforts have been made to investigate the drug-formation mechanism and provide detailed physical and photochemical characterizations and the potential structure optimization of the as-designed PDT drug. We envision that such a PDT drug will become a potential theranostic nanomedicine for future near-infrared laser-triggered photodynamic therapy and simultaneous magnetic/optical bimodal imaging.
Authors:
Feng Chen; Shengjian Zhang; Wenbo Bu; Yu Chen; Qingfeng Xiao; Jianan Liu; Huaiyong Xing; Liangping Zhou; Weijun Peng; Jianlin Shi
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-4-27
Journal Detail:
Title:  Chemistry (Weinheim an der Bergstrasse, Germany)     Volume:  -     ISSN:  1521-3765     ISO Abbreviation:  -     Publication Date:  2012 Apr 
Date Detail:
Created Date:  2012-4-30     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9513783     Medline TA:  Chemistry     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Affiliation:
Group of Mesoporous and Low-Dimensional Nano-Materials, State Key Laboratory of High-Performance, Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, Dingxi Road 1295 Shanghai (P.R. China), Fax: (+86) 5241-3122; F. Chen and S. J. Zhang contributed equally to this work.
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