Dinuclear mono-bridged or polymeric lanthanide complexes from one ligand: structural transformation and chiral induction

Abstract

We designed and synthesized a semi-rigid bis-tridentate ligand L which could undergo trans-to-cis conformational transition when coordinated onto lanthanum ions through the rotation of the single bond on the central...

Recent advances in lanthanide-based POMs for photoluminescent applications

“…6,[16][17][18][19][20] Lanthanide (Ln)-based luminescent materials with the high color purity of the emitted light have attracted considerable attention in broad areas of sciences as potent candidates owing to their resistance to photobleaching, narrow f-f transitions, and long excited-state lifetimes. [21][22][23] Trivalent Ln III ions with many complicated 4f energy levels, known as the "vitamins of modern industry", feature fluorescence emission via intra-4f or 4f-5d transitions from visible (Eu III or Tb III ) to near-infrared (Nd III or Yb III ) light. 22,[24][25][26][27][28][29] This property can ensure the emergence of Ln ions with high color purity and Stokes shift, reducing excitation interference in the emission process.…”

Spectroscopic techniques to probe magnetic anisotropy and spin–phonon coupling in metal complexes

“…It should be pointed out that magnetic anisotropy of metal complexes has also been determined by cantilever torque magnetometry (CTM) 74,[80][81][82][83][84][85][86] which was recently reviewed by Perfetti, 87 angle-resolved magnetometry, [88][89][90][91] and μ-SQUID magnetometry used by, e.g., Wernsdorfer and coworkers. [92][93][94][95] In addition, electronic structures in metal complexes have been determined by spectroscopic techniques such as magnetic circular dichroism (MCD), 30,48,[96][97][98][99] luminescence, [100][101][102][103][104] and FIRMS. For us, finding spectroscopic methods to directly determine energies of magnetic excited states that are >33 cm −1 , i.e., large magnetic anisotropy, has been one goal of our recent research.…”

Crystal structure and cryomagnetic study of a mononuclear erbium(III) oxamate inclusion complex

“…Increasing efforts have been devoted to investigating SMMs and SIMs containing rare-earth elements, because these ions typically have practical functional applications with high values of spin-orbit coupling compared to first-row transition elements (Chen et al, 2023;Dey et al, 2018). Therefore, lanthanide ions may produce performant magnetic ions and magnetic molecules, with higher blocking temperatures, compatible with technological applications (Guo et al, 2018).…”