title: Calix[4]arene nitroxide tetraradical and octaradical.
abstract: 1,3-Alternate calix[4]arene with para-phenylene spacers connecting nitroxide monoradicals and high-spin (S = 1) diradicals provides tetraradical and octaradical scaffolds that possess conformations with slow electron spin relaxation rates (1/T(1)). Such scaffolds may facilitate tuning of relaxation rates that are more favorable for MRI or DNP applications.
authors.affiliation: Department of Chemistry, University of Nebraska, Lincoln, Nebraska 68588-0304, USA.
authors.forename: Arnon
authors.initials: A
authors.lastname: Olankitwanit
authors.forename: Velavan
authors.initials: V
authors.lastname: Kathirvelu
authors.forename: Suchada
authors.initials: S
authors.lastname: Rajca
authors.forename: Gareth R
authors.initials: GR
authors.lastname: Eaton
authors.forename: Sandra S
authors.initials: SS
authors.lastname: Eaton
authors.forename: Andrzej
authors.initials: A
authors.lastname: Rajca
mesh_terms: D047250:Calixarenes / Q000138:chemical synthesis / Q000737:chemistry*; D004578:Electron Spin Resonance Spectroscopy; D009682:Magnetic Resonance Spectroscopy; D009569:Nitric Oxide / Q000737:chemistry; D010636:Phenols / Q000138:chemical synthesis / Q000737:chemistry*; D011789:Quantum Theory
chemical_list: D010636:Phenols; C121325:calix(4)arene; D047250:Calixarenes; D009569:Nitric Oxide