Near-Infrared Magnetic Circularly Polarized Luminescence and Slow Magnetic Relaxation in a Tetrazinyl-Bridged Erbium Metallocene
Niki Mavragani, Diogo A. Gálico, Alexandros A. Kitos, Muralee Murugesu
Abstract
The magnetic and magneto-optical properties of a tetrazinyl radical-bridged Er III metallocene, [(Cp* 2 Er III ) 2 (bpytz •– )][BPh 4 ] ( 1; Cp* = pentamethylcyclopentadienyl, bpytz = 3,6-bis(3,5-dimethyl-pyrazolyl)-1,2,4,5-tetrazine), are reported. As confirmed by these studies strong Ln-rad coupling is achieved, with 1 exhibiting slow magnetic relaxation under a 1000 Oe dc field. The optical and magneto-optical profile of 1 is completed by both near-infrared (NIR) luminescence and magnetic circularly polarized luminescence (MCPL), representing the first example of NIR MCPL with Er III .
Topics & Concepts
ChemistryErbiumMagnetic relaxationLuminescenceMetalloceneInfraredRelaxation (psychology)Nuclear magnetic resonancePhotochemistryCondensed matter physicsDopingOptoelectronicsMagnetic fieldPolymerOpticsOrganic chemistryPolymerizationMagnetizationPsychologyPhysicsSocial psychologyQuantum mechanicsMagnetism in coordination complexesLanthanide and Transition Metal ComplexesElectron Spin Resonance Studies