The luminescence response of Eu(III)-thenoyltrifluoroacetonate complexes upon preresonant excitation with femtosecond laser pulses

作者：Hadjichristov Georgi B^*; Stefanov Ivan L; Stanimirov Stanislav S; Petkov Ivan K

来源：Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy , 2010, 75(1): 448-452.

DOI：10.1016/j.saa.2009.11.005

• Europium complexes
• Thenoyltrifluoroacetonates (TTA)
• Polymer Eu(III) complexes
• Photon excitation
• Femtosecond laser
• Fluorophotometry

The luminescence of thenoyltrifluoroacetonate (TTA) coordination complexes of trivalent europium ion (Eu(III)) in aqueous solutions and in solid-state polymeric films is probed upon single- and two-photon preresonant excitation with Ti:sapphire femtosecond laser. Particularly, diamine-liganded Eu(III)(TTA)(3) and poly(oxyethylene phosphate)tris(beta-diketonate)Eu(III) complexes are examined aiming their possible applications as luminescent labels for sensing and imaging of biological molecules. Even at a pre-resonance, the excitation of these compounds with high-intensity, broadband light of frequency-doubled Ti:sapphire femtosecond laser centered around 400 nm results in a luminescence response suitable for fluorometric applications.

• 出版日期2010-1