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Surface‐Functionalized Nanoparticles with Liquid‐Like Behavior
Author(s) -
Bourlinos A. B.,
Herrera R.,
Chalkias N.,
Jiang D. D.,
Zhang Q.,
Archer L. A.,
Giannelis E. P.
Publication year - 2005
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.200401060
Subject(s) - maghemite , materials science , nanoparticle , surface modification , counterion , solvent , chemical engineering , ferrofluid , polymerization , nanomaterials , nanotechnology , organic chemistry , polymer , chemistry , composite material , ion , physics , quantum mechanics , magnetic field , engineering
Surface functionalization of silica or maghemite (γ‐Fe 2 O 3 ) nanoparticles with a quaternary ammonium organosilane leads to ionically modified nanoparticles that, depending on the nature of the counterion, exhibit liquid‐like behavior in the absence of solvents. Solvent‐free nanosalts composed of modified silica nanoparticles (Figure, left) can be used to dissolve and polymerize pyrrole, while nanosalts composed of maghemite nanoparticles (right) can form solvent‐free ferrofluids.