Work

Near-Infrared Lanthanide-Based Emission from Fused Bis[Ln(III)/Zn(II) 14-metallacrown-5] Coordination Compounds

Year: 2022

Type: article

Abstract: A set of (Ln[14-MC Zn(II)N(quinHA) -5]) 2 Ln 2 Zn 2 (quinHA) 2 (ph) 2 (Hph) 4 (OH) 8 (H 2 O) 4 metallacrowns ( Ln-1, Ln = Tb, Gd, or Yb; H 2 quinHA = quinaldic hydroxamic acid, H 2 ph = phthalic acid) have been synthesized via solution-state self-assembly. The metallacrowns possess an uncommon topology within the metallacrown family where two rarely seen 14-metallacrown-5 moieties are fused by a Yb 2 Zn 2 (quinHA) 2 bridge. Moreover, Yb-1 analyzed in the solid state exhibits a characteristic near-infrared luminescence signal arising from Yb 3+ 2 F 5/2 → 2 F 7/2 transition despite the proximity of high energy O–H oscillators.

Source: Inorganic Chemistry

DOI: 10.1021/acs.inorgchem.2c00084

Authors: John P. Karns, Svetlana V. Eliseeva, Cassandra L. Ward, Matthew J. Allen, Stéphane Petoud, Jacob C. Lutter

Institutions: Wayne State University, Centre National de la Recherche Scientifique, Centre de Biophysique Moléculaire

Language: English

Topic: Lanthanide and Transition Metal Complexes

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

Open Access status: green

Funders: Wayne State University, Institut National de la Santé et de la Recherche Médicale, Ligue Contre le Cancer, National Institute of Biomedical Imaging and Bioengineering

Awards: G2094613296, Library Synthesis and Screening of Eu(II)-Based Contrast Agents