Near-infrared Fourier transform room-temperature photoluminescence of erbium complexes

A modified Fourier transform (FT) Raman bench spectrometer designed for the detection of weak light emission in the 800-1700 nm wavelength region has been used to demonstrate the advantages of FT spectroscopy for measuring near-infrared photoluminescence spectra of lanthanide complexes with a good resolution and very good sensitivity. This apparatus has been tested with an ultraviolet laser source (325 nm) on three standard erbium complexes. The I-4(13/2)-->I-4(15/2) emission of tris-(acetylacetonato) (1,10 phenanthroline) erbium [Er(acac)(3)(phen)], tris-(4,4,4,-trifluoro-1-(2 thenoyl)-1,3-butenedione) (1,10 phenanthroline) erbium [Er(TTFA)(3)(phen)] and tris(8-hydroxyquinolinato) erbium [Erq(3)] has thus been recorded in solution and in the solid state and compared with literature. (C) 2003 American Institute of Physics.