Issue 11, 2013

Oligomeric and polymeric surfactants for the transfer of luminescent ZnO nanocrystals to water

Abstract

The water dispersion of luminescent nanocrystals (NCs) synthesized in organic solvent by encapsulation in a surfactant bilayer is a promising strategy for preserving the optical properties of NCs. The phase transfer of highly monodispersed ZnO NCs using the monomer, dimer, trimer and polymer of a series of alkyl ammonium surfactants is compared. Transfer yields over 60% could be obtained with the oligomers and the polymer. In contrast, we observed no measurable transfer using the single chain surfactant. NMR spectroscopy, including DOSY and NOESY, demonstrated that increasing the oligomerization number ameliorates the stability within the coating bilayer. The NCs exhibit a strong luminescence in water and show long term chemical and photo-chemical stability.

Graphical abstract: Oligomeric and polymeric surfactants for the transfer of luminescent ZnO nanocrystals to water

Supplementary files

Article information

Article type
Paper
Submitted
18 Dec 2012
Accepted
18 Jan 2013
First published
21 Jan 2013

J. Mater. Chem. C, 2013,1, 2158-2165

Oligomeric and polymeric surfactants for the transfer of luminescent ZnO nanocrystals to water

A. Dazzazi, Y. Coppel, M. In, C. Chassenieux, P. Mascalchi, L. Salomé, A. Bouhaouss, M. L. Kahn and F. Gauffre, J. Mater. Chem. C, 2013, 1, 2158 DOI: 10.1039/C3TC00877K

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