Lanthanide Complexes for Nonlinear Optics: From Fundamental Aspects to Applications

Abstract

International audienceMagnetic and luminescence properties of lanthanide complexes have been extensively studied; however, their potentialities in nonlinear optics (NLO) have been less explored. Since beginning of the 2000s, these properties have become an emerging field of research from the point of view of both fundamental aspects and bioimaging applications. In this microreview, we attempt to make an exhaustive compilation of about ten years of research endeavours in lanthanide coordination chemistry and crystal engineering for nonlinear optics.(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2009

Interpretation of europium(III) spectra

“…Otherwise the one-photon absorption process will occur and not the two-photon absorption. This requirement restricts the use of two-photon absorption mainly to systems in the middle of the lanthanide series compounds is a very active research field at the moment, but for biological studies rather than theoretical studies [27,33,85,[579][580][581][582][583][584][585][586]. Europium(III) complexes are very often used for in vitro and in vivo studies of cells, but ultraviolet excitation light has a very limited penetration depth in tissues and it can also damage living cells.…”

Bionanoprobes with Excellent Two‐Photon‐Sensitized Eu3+ Luminescence Properties for Live Cell Imaging

“…[2][3][4] Due to the characteristic luminescence properties of Eu 3 + complexes, such as the characteristic narrow-line emission in the red-light wavelength region with acceptable transparence for many biosamples, high luminescence quantum yields, large Stokes shifts, and long luminescence lifetime (millisecond order), the TPS Eu 3 + luminescence is of significance for developing bioanalysis or bioimaging technologies.…”

“…No apparent cytotoxicity was observed to HeLa and Lewis cells even when the concentration of EuLNPs was increased up to 100.0 mg mL À1 (7.4 mm [EuA C H T U N G T R E N N U N G (tta) 3 dpbt]) (see the Supporting Information, Figure S4). 2 Cldpbt] was 1.0 mg mL À1 (0.9 mm). [3] The high biocompatibility of PMMA-co-MAA and the efficient shielding of [EuA C H T U N G T R E N N U N G (tta) 3 dpbt] molecules by the matrix in EuLNPs may be a cause of the low cytotoxicity of EuLNPs to the cells.…”

Two-photon multiplexing bio-imaging using a combination of Eu- and Tb-bioprobes

“…1 Two-photon (2P) excitation allows a 3D resolution, with an excitation in the nearinfrared spectral range and results in reduced photo-bleaching and photo-damage and numerous organic dyes featuring optimized two-photon brightness have been reported for this application. 2 On the other hand, f-block elements are well known for their sharp emission bands characteristic of each element with long lifetime enabling time-resolved and multiplexing imaging.…”