title: Mechanochemical surface functionalisation of superparamagnetic microparticles with in situ formed crystalline metal-complexes: a fast novel core-shell particle formation method.
abstract: An innovative mechanochemical method is reported for the in situ formation of crystalline metal-complexes on the surface of superparamagnetic nanocomposite microparticles. The process is demonstrated for coating Fe3O4 multicore-silica matrix particles with the 1,2,4-1H-triazole complex [ZnCl2(TzH)2]. The use of mechanochemistry demonstrates a flexible process to obtain functional shells on magnetic particle cores without the need for complicated surface-functionalisation reactions in solution. Simple mixing of the desired shell-precursors ZnCl2 and 1,2,4-1H-triazole (TzH) with the magnetic particles in a ball mill is sufficient to tailor the particle surfaces with novel functionalities while retaining the superparamagnetic behaviour.
authors.affiliation: Institute for Inorganic Chemistry, Am Hubland, 97074 Wuerzburg, Germany. k.mueller-buschbaum@uni-wuerzburg.de.
authors.forename: F A
authors.initials: FA
authors.lastname: Brede
authors.forename: K
authors.initials: K
authors.lastname: Mandel
authors.forename: M
authors.initials: M
authors.lastname: Schneider
authors.forename: G
authors.initials: G
authors.lastname: Sextl
authors.forename: K
authors.initials: K
authors.lastname: Müller-Buschbaum
mesh_terms: D003460:Crystallization; D058185:Magnetite Nanoparticles / Q000737:chemistry*; D015394:Molecular Structure; D009942:Organometallic Compounds / Q000138:chemical synthesis / Q000737:chemistry*; D010316:Particle Size; D012822:Silicon Dioxide / Q000737:chemistry; D013499:Surface Properties; D014230:Triazoles / Q000737:chemistry; D015032:Zinc / Q000737:chemistry
chemical_list: D058185:Magnetite Nanoparticles; D009942:Organometallic Compounds; D014230:Triazoles; C045575:1,2,4-triazole; D012822:Silicon Dioxide; D015032:Zinc