Details

Autor(en) / Beteiligte

• Dazzazi, Anass
• Coppel, Yannick
• In, Martin
• Chassenieux, Christophe
• Mascalchi, Patrice
• Salomé, Laurence
• Bouhaouss, Ahmed
• Kahn, Myrtil L.
• Gauffre, Fabienne

Titel

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

Ist Teil von

• Journal of materials chemistry. C, Materials for optical and electronic devices, 2013-01, Vol.1 (11), p.2158-2165

Erscheinungsjahr

2013

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• 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.