Luminescence ligands

Cross J-P, Lauz M, Badger PD et al (2004) Polymetallic lanthanide complexes with PAMAM-naphthalimide dendritic ligands luminescent lanthanide complexes formed in solution. J Am Chem Soc 126 16278-16279... 

A new probe of solvent accessibility of bound sensitizers has been described and tested for the particular case of a series of Ru" and Os photosensitizers bound to sodium lauryl sulphate micelles. The method depends upon the large solvent deuterium effect on excited-state lifetimes, and a correlation has been established between accessibility of bound complexes and hydrophobicity of the ligands. Luminescence properties of amphiphilic annelide-type complexes of ruthenium in micellar phases have been described. In the case of [4,4 -bis(nonadecyl)-2,2 -bipyridyl]bis-[4,4 -di-(10,13,16-trioxaundecyl)-2,2 -bipyridyl]ruthenium dichloride, intramicellar self-quenching effects have an influence on the excited-state lifetime, and the mechanism of self-quenching has been determined. Deactivation of [Ru(bipy)3] by [Co(EDTA)] has been studied in a micellar environment and found to occur by electron transfer at diffusion-controlled rates a stereoselective effect has been observed. ... 

Lanthanides, Ln(III), are capable of displaying luminescence in solutions of inorganic salts, crystallophosphors, and complexes with organic ligands. Luminescence of inorganic salts of Ln(III) is characteristic of elements from Ce to Dy. Luminescence spectra of Ce(III), Pr(III), and Nd(III) salts are broad diffusion bands associated with transitions... 

Stufkens has reviewed the photochemistry and photophysics of zerovalent (f complexes of diimine ligands luminescence is observed from [(CO)4M(LL)] (M = Mo , W and LL = diimine). Other examples of zerovalent d complexes exhibiting MLCT emission include the bimetallic complexes (/x.-bpym) Mo(CO)4]2, which exhibits weak emission with an onset at 700 nm in CH2CI2. and [W(C0)5]2L (L = 2,l,3-benzothiadiazole, 2,1, 3-benzoselenadiazole) that shows weak near-IR (>750 mn) MLCT emission... 

Figs. 7 and 8. Notably, the collection includes chiral ligands, a catalytically active ligand, luminescent ligands, and ligands with selective metal-ion sequestering... 

Ulrich, G., Asfari, Z., and Lehn, J.-M. (1995) Lanthanide complexes of encapsulating ligands luminescent devices at the molecular level. Pure Appl. Chem., 67 (1), 135-140. 

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