Thermodynamically stable dispersions of quantum dots in a nematic liquid crystal.

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

https://www.ncbi.nlm.nih.gov/pubmed/23808380

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