Incorporation of fullerene derivatives into smectite clays: a new family of organic-inorganic nanocomposites.
Three fulleropyrrolidine derivatives, characterized by the presence of positive charges, were introduced in the interlayer space of montmorillonite. The composites were characterized by powder X-ray diffraction and differential thermal and thermogravimetric (DTA-TGA) analysis, in conjunction with FTIR, UV-Vis, Raman, and (57)Fe-Mössbauer spectroscopies. Organophilic derivatives were intercalated into organically modified clays, while water-soluble fulleropyrrolidines were introduced into the clay galleries through ion exchange. The experiments, complemented by computer simulations, show that not all the clay-clay platelets are intercalated by the fullerene derivatives and that a sizable amount of charge transfer takes place between the host and the guests.
Gournis
Dimitrios
D
Department of Materials Science and Engineering, University of Ioannina, 45110 Ioannina, Greece. dgourni@cc.uoi.gr
Georgakilas
Vasilios
V
Karakassides
Michael A
MA
Bakas
Thomas
T
Kordatos
Konstantinos
K
Prato
Maurizio
M
Fanti
Marianna
M
Zerbetto
Francesco
F