Lanthanide anthracene complexes: slow magnetic relaxation and luminescence in DyIII, ErIII and YbIII based materials. Issue 8 (6th February 2019)

• Record Type: Journal Article
• Authors: Zou, Qian; Huang, Xin-Da; Liu, Jing-Cui; Bao, Song-Song; Zheng, Li-Min
• Is Part Of: Dalton transactions. Volume 48:Issue 8(2019)
• Page Start: 2735
• Page End: 2740
• Publication Date: 2019-02-06
• Subjects: Chemistry, Inorganic -- Periodicals; Chemistry, Physical and theoretical -- Periodicals; Chemistry, Inorganic -- Periodicals; 546.05
• DOI: 10.1039/c9dt00073a
• Languages: English
• ISSNs: 1477-9226

Abstract

Abstract : [Ln(depma)2 (H2 O)6 ]Cl3 · x H2 O· y CH3 OH [Ln = Dy, Gd, Er, Yb; depma = 9-diethylphosphono-methylanthracene] show photoluminescence at room temperature, and all except the Gd analogue also show field-induced single ion magnet behavior at low temperature. Abstract : Four mononuclear lanthanide complexes, [Ln(depma)2 (H2 O)6 ]Cl3 · x H2 O· y CH3 OH [Ln = Dy (1Dy ), x = 6, y = 0; Gd (2Gd ), x = 3, y = 1; Er (3Er ), x = 6, y = 0; Yb (4Yb ), x = 3, y = 1; depma = 9-diethylphosphono-methylanthracene], are reported and structurally characterized. The octa-coordinated environment of Ln III is composed of two oxygen atoms from two different depma ligands and six oxygen atoms from each bound water molecule. All four complexes show photoluminescence in the solid state at room temperature, originating from the ligand-centered emissions of depma. Furthermore, slow magnetization relaxation is found in1Dy, 3Er and4Yb with the energy barriers ( U eff ) of 40.5 K (1 kOe), 9.8 K (1 kOe) and 28.9 K (0.75 kOe), respectively.