title: Exploring the magnetic behavior of nickel-coordinated pyrogallol[4]arene nanocapsules.
abstract: The magnetic behavior of nickel-seamed C-propylpyrogallol[4]arene dimeric and hexameric nanocapsular assemblies has been investigated in the solid state using a SQUID magnetometer. These dimeric and hexameric capsular entities show magnetic differentiation both in terms of moment per nanocapsule and potential antiferromagnetic interactions within individual nanocapsules. The weak antiferromagnetic behavior observed at low temperatures indicates dipolar interactions between neighboring nickel atoms; however, this effect is higher in the hexameric nickel-seamed assembly. The differences in magnetic behavior of dimer versus hexamer can be attributed to different coordination environments and metal arrangements in the two nanocapsular assemblies.
authors.affiliation: Department of Chemistry, University of Missouri-Columbia, 601 South College Avenue, Columbia, Missouri 65211, USA.
authors.forename: Harshita
authors.initials: H
authors.lastname: Kumari
authors.forename: Cindi L
authors.initials: CL
authors.lastname: Dennis
authors.forename: Andrew V
authors.initials: AV
authors.lastname: Mossine
authors.forename: Carol A
authors.initials: CA
authors.lastname: Deakyne
authors.forename: Jerry L
authors.initials: JL
authors.lastname: Atwood
mesh_terms: D047250:Calixarenes / Q000737:chemistry* / Q000528:radiation effects; D003460:Crystallization / Q000379:methods*; D060526:Magnetic Fields; D008422:Materials Testing; D053769:Nanocapsules / Q000737:chemistry* / Q000528:radiation effects*; D009532:Nickel / Q000737:chemistry* / Q000528:radiation effects; D010316:Particle Size; D011748:Pyrogallol / Q000031:analogs & derivatives* / Q000737:chemistry / Q000528:radiation effects
chemical_list: D053769:Nanocapsules; C522570:pyrogallol(4)arene; D011748:Pyrogallol; D047250:Calixarenes; D009532:Nickel