Luminescent lanthanide-containing

Figure 4.15 The structure of (a) complex [Gd(13)(N03)3 /2CH3CN /2H20 and (b) the head-to-tail stacking [29]. (Reprinted with permission from E. Terazzi, et al., Molecular control of macroscopic cubic, columnar, and lamellar organizations in luminescent lanthanide-containing thermotropic hquid crystals, Journal of the American Chemical Society, 127, no. 3, 888-903, 2005. 2005 American Chemical Society.)...

Bernardinelli, G, Biinzli, J.C.G., Deschenaux, R., and Guillon, D. (1998) Bent tridentate receptors in calamitic mesophases with predetermined photophysical properties new luminescent lanthanide-containing materials. Journal of the American Chemical Society, 120, 12274. 

Figure 13.4 Typical design principle of lanthanide complex-based chemosensors based on binding of an analyte (an) (a) directly influencing the Ln(III) luminescence, (b) influencing photophysical properties of the ligand, and (c) addition of a sensitizing analyte onto a poorly luminescent lanthanide-containing sensor [1]. (Reproduced from J.C.G. Bunzli and C. Piguet, Taking advantage of luminescent lanthanide ions, Chemical Society Reviews, 34, 1048-1077, 2005, by permission of The Royal Society of Chemistry.)...

Another approach to obtain luminescent lanthanide-containing liquid crystals is by dissolving a luminescent lanthanide complex in a suitable liquid crystal host matrix. The advantage of this method is that the luminescence and mesomorphic properties can independently be optimised. This allows easier access to nematic lanthanide-containing liquid... 

TaqMan probe that is annealed to the PCR target, and thus the luminescence from the cleaved luminophore comes to be observed. SNP typing is also possible using TaqMan probes which are designed to contain the SNP site of interest. Some modifications using luminescent lanthanide complexes have been reported by groups at the University of Turku and PerkinElmer, Inc as described below. 

In addition to the features relevant to energy-transfer processes and minimization of nonradia-tive deactivation discussed above, the Lnm environment in a lanthanide-containing luminescent probe must also fulfill several other requirements high thermodynamic stability, kinetic inertness, and a saturated coordination sphere. Furthermore, in case of bio-analyses, the luminescent probe has to comply with biochemical aspects as well, especially if the probe is to be... 

Fig. 4.53. Substituted calixarenes for lanthanide-containing luminescent probes.

Faulkner, S., Natrajan, L.S., Perry, W.S., and Sykes D. (2009) Sensitized luminescence in lanthanide containing arrays and d-f hybrids. Dalton Transactions, 20, 3890-3899. 

Dendrimer-type ligand (32) serves as a lanthanide container to exhibit on-off switchable luminescence upon lanthanide complexation in response to external anions [56]. Because of the presence of two classes of coordination sites for the lanthanide cations at the inner and outer spheres, the dendrimer 32 exhibits two different binding modes to afford on-off lanthanide luminescence, in which outer complexation at the tetradentate tripod site offers the on luminescence state upon quinoline excitation whereas, inner complexation at the multidentate core site corresponds to the off luminescence state. Upon complexation of 32 with Yb(CF3 SO3 )3, the quite weak NIR luminescence from the Yb(III) center suggests that the Yb(III) ion is most probably located at the inner coordination sites and apart from the excited quinoline moieties. Nevertheless, addition of SCN anion to the 32-Yb(CF3803)3 system induced remarkable spectral changes around the quinoline absorption band and about ninefold enhancement in luminescence intensity at around 980 nm. As the intense Yb luminescence appeared upon quinoline excitation, the employed SCN anion promoted the tripod-Yb +... 

Silva, E.R.G, Malta, O.L., Reinhard, C., et al (2002) Visible and near-infrared luminescence of lanthanide-containing dimetallic triple-stranded helicates energy transfer mechanisms in the Sm and Yb molecular edifices. Journal of Physical Chemistry, 106, 1670. 

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