Laboratory of Optics and Spectroscopy, Georgi Nadjakov Institute of Solid State Physics, Bulgarian Academy of Sciences, Sofia, Bulgaria.
Spectrochim Acta A Mol Biomol Spectrosc. 2010 Jan;75(1):448-52. doi: 10.1016/j.saa.2009.11.005. Epub 2009 Nov 13.
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.
本文研究了三价铕离子（Eu(III)）的三氟乙酰丙酮（TTA）配位配合物在水溶液和固态聚合薄膜中的荧光，通过钛宝石飞秒激光的单光子和双光子预共振激发进行探测。特别地，考察了二胺配体的 Eu(III)(TTA)(3)和聚（氧乙烯磷酸）三（β-二酮）Eu(III)配合物，因为它们可能作为生物分子传感和成像的荧光标记物。即使在预共振时，用中心波长为 400nm 的钛宝石飞秒激光的高强度、宽带倍频光激发这些化合物，也会产生适合荧光应用的发光响应。
