Thermodynamically stable dispersions of quantum dots in a nematic liquid crystal.
Fiche publication
Date publication
juillet 2013
Auteurs
Membres identifiés du Cancéropôle Est :
Pr MELY Yves
Tous les auteurs :
Prodanov MF, Pogorelova NV, Kryshtal AP, Klymchenko AS, Mely Y, Semynozhenko VP, Krivoshey AI, Reznikov YA, Yarmolenko SN, Goodby JW, Vashchenko VV
Lien Pubmed
Résumé
Using transmittance electron microscopy, fluorescence and polarizing optical microscopy, optical spectroscopy, and fluorescent correlation spectroscopy, it was shown that CdSe/ZnS quantum dots coated with a specifically designed surfactant were readily dispersed in nematic liquid crystal (LC) to form stable colloids. The mixture of an alkyl phosphonate and a dendritic surfactant, where the constituent molecules contain promesogenic units, enabled the formation of thermodynamically stable colloids that were stable for at least 1 year. Stable colloids are formed due to minimization of the distortion of the LC ordering around the quantum dots.
Référence
Langmuir. 2013 Jul 30;29(30):9301-9