title: Synthesis of alkyl sulfonate/alcohol-protected gamma-Fe(2)O(3) nanocrystals with narrow size distributions.
abstract: Highly crystalline gamma-Fe(2)O(3) nanoparticles with narrow size distributions that are coated with 1-undecanesulfonic acid were synthesized via two distinct approaches using oxidation and site-exchange reactions. However, similar nanocrystals protected with 1-octanol could only be achieved via the site-exchange method, while the oxidation approach led to Fe(2)O(3) nanoparticles of poor crystallinity and size uniformity. Our magnetization measurements confirmed the superparamagnetic nature of our Fe(2)O(3) nanoparticle products and the effects of the coating materials on magnetization properties.
authors.affiliation: Department of Chemistry and Biochemistry, Southern Illinois University, Carbondale, IL 62901-4409, USA.
authors.forename: Junge
authors.initials: J
authors.lastname: Lu
authors.forename: Jinda
authors.initials: J
authors.lastname: Fan
authors.forename: Ruisong
authors.initials: R
authors.lastname: Xu
authors.forename: Sujoy
authors.initials: S
authors.lastname: Roy
authors.forename: Naushad
authors.initials: N
authors.lastname: Ali
authors.forename: Yong
authors.initials: Y
authors.lastname: Gao