title: Monitoring the growth of polyoxomolybdate nanoparticles in suspension by flow field-flow fractionation.
abstract: We follow the evolution of polyoxomolybdate nanoparticles in suspensions derived from the keplerate (NH4)42[MoVI72MoV60O372(CH3CO2)30(H2O)72].ca..300H2O.ca..10CH3CO2NH4 ({Mo132}) by flow field-flow fractionation (FlFFF) to monitor the particle-size distribution in situ, atomic force and high-resolution transmission electron microscopy (AFM, SEM, and HRTEM) to confirm particle sizes, inductively coupled plasma-optical emission spectrometry (ICP-OES) to determine the Mo content of the FlFFF-separated fractions, and UV/visible spectroscopy to confirm the identity of the species in suspension. We observe the formation of 3-75-nm polyoxomolybdate particles in suspension and the dynamic growth of {Mo132} crystals.
authors.affiliation: Department of Chemistry, University of Kentucky, Lexington, Kentucky 40506, USA.
authors.forename: Bailin
authors.initials: B
authors.lastname: Chen
authors.forename: Huijian
authors.initials: H
authors.lastname: Jiang
authors.forename: Yan
authors.initials: Y
authors.lastname: Zhu
authors.forename: Arthur
authors.initials: A
authors.lastname: Cammers
authors.forename: John P
authors.initials: JP
authors.lastname: Selegue