Aqueous Dispersions of Unmodified Y@C82 (C2v) Endohedral Metallofullereneстатья
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 26 февраля 2018 г.
Аннотация:Aqueous dispersions of unmodified (pristine) (AFD) nY@C82
(symmetry C2v) endofullerene were produced with a nearly
100% yield relative to the initial toluene solution of the endofullerene. To the best of our knowledge, this is the first report of this kind of endofullerene aqueous dispersions. The solvent-exchange ultrasound-assisted procedure requires no
modification of the endofullerene surface or addition of any
stabilizing agents into the aqueous phase. The procedure is
applicable to any endohedral metallofullerene aqueous dispersions
suitable for biomedical applications. The resulting
dispersions are stable for at least 6 months. For the produced
aqueous dispersions of Y@C82, the zeta potential of ca. –42 mV
shows good stability; the average diameter of clusters was as
small as ca. 120 nm. Techniques for purification and purity
control of nY@C82 and of the intermediate toluene solution of
Y@C82 were developed. The residual quantity of organic
compounds was less than 1 ppb after the purification. Based
on ICP–AES, headspace GC–MS, and MALDI–TOF, a procedure
to assess endofullerene concentrations in the aqueous phase
was proposed.