Visible-light-sensitized near-infrared luminescence from rare-earth complexes of the 9-hydroxyphenalen-1-one ligand

R. Van Deun, P. Fias, Peter Nockemann, K. Van Hecke, L. Van Meervelt, K. Binnemans

Research output: Contribution to journalArticlepeer-review

52 Citations (Scopus)

Abstract

The unique absorption properties of the 9-hydroxyphenalen-1-one (HPHN) ligand have been exploited to obtain visible-light-sensitizable rare-earth complexes in 1: 3 and 1: 4 metal-to-ligand ratios. In both stoichiometries (1:3,tris,Ln(PHN)3;1:4, tetrakis, A[ Ln( PHN)(4)], with Ln being a trivalent rare-earth ion and A being a monovalent cation), the complexes of Nd(III),Er( III), and Yb(III) show typical near-infrared luminescence upon excitation with visible light with wavelengths up to 475 nm. The X-ray crystal structures of the tris complexes show solvent coordination to the central rare-earth ion, whereas in the tetrakis complexes, the four PHN-ligands form a protective shield around the central ion, preventing small solvent molecules from coordinating to the rare-earth ion, at least in the solid state.
Original languageEnglish
Pages (from-to)10416-10418
Number of pages3
JournalInorganic Chemistry
Volume45
Issue number26
DOIs
Publication statusPublished - 25 Dec 2006

ASJC Scopus subject areas

  • Inorganic Chemistry

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