Optimisation of ligand exchange towards stable water suspensions of crystalline NaYF4: Er3+, Yb3+ nanoluminophors

NaYF4: 2%Er3+, 20%Yb3+ nanoparticles were synthesized through a wet chemical route. In order to transfer the nanoparticles from chloroform to aqueous solution an oleic acid to 3-mercaptopropionic acid ligand exchange process has been performed and optimized. The influence of temperature and atmosphe...

Full description

Saved in:
Bibliographic Details
Published inJournal of nanoscience and nanotechnology Vol. 12; no. 3; p. 1886
Main Authors Wawrzynczyk, D, Bednarkiewicz, A, Nyk, M, Cichos, J, Karbowiak, M, Hreniak, D, Strek, W, Samoc, M
Format Journal Article
LanguageEnglish
Published United States 01.03.2012
Online AccessGet more information

Cover

More Information
Summary:NaYF4: 2%Er3+, 20%Yb3+ nanoparticles were synthesized through a wet chemical route. In order to transfer the nanoparticles from chloroform to aqueous solution an oleic acid to 3-mercaptopropionic acid ligand exchange process has been performed and optimized. The influence of temperature and atmosphere onto the NaYF4:2%Er3+, 20%Yb3+ nanoparticles water suspensions dispersibility and stability after replacing oleic acid with 3-mercaptopropionic acid ligands has been investigated. The results revealed an improvement of nanoparticles water suspension transparency and luminescence yield after ligand exchange process performed under inert atmosphere and at elevated temperature.
ISSN:1533-4880
DOI:10.1166/jnn.2012.5202