Micelle-encapsulated fullerenes in aqueous electrolytes

Autor: Keijo Haapakka, A. Kopperoinen, Timo Ala-Kleme, R. Mäki, M. Heikkinen, A. Mäki
Rok vydání: 2013
Předmět:
Zdroj: Journal of Luminescence. 135:221-226
ISSN: 0022-2313
DOI: 10.1016/j.jlumin.2012.10.012
Popis: Different micellar particles Mi(M + ) (Mi=Triton X-100, Triton N-101 R, Triton CF-10, Brij-35, M + =Na + , K + , Cs + ) have been prepared in different aqueous H 3 BO 3 /MOH background electrolytes. It has been observed that these particles can be used to disperse the highly hydrophobic spherical [60]fullerene ( 1 ) and ellipsoidal [70]fullerene ( 2 ). This dispersion is realised as either micelle-encapsulated monomers Mi(M + ) 1 m and Mi(M + ) 2 m or water-soluble micelle-bound aggregates Mi(M + ) 1 agg and Mi(M + ) 2 agg , where especially the hydration degree and polyoxyethylene (POE) thickness of the micellar particle seems to play a role of vital importance. Further, the encapsulation microenvironment of 1 m was found to depend strongly on the selected monovalent electrolyte cation, i.e ., the encapsulated 1 m is accommodated in the more hydrophobic microenvironment the higher the cationic solvation number is.
Databáze: OpenAIRE