Bimetallic lanthanide complexes that display a ratiometric response to oxygen concentrations

A base-free synthetic route to anti-bimetallic lanthanide pentalene complexes.

We report the synthesis and structural characterisation of three homobimetallic complexes featuring divalent lanthanide metals (Ln = Yb, Eu and Sm) bridged by the silylated pentalene ligand [1,4-{SiiPr3}2C8H4]2- (= Pn†). Magnetic measurements and cyclic voltammetry have been used to investigate the extent of intermetallic communication in these systems, in the context of molecular models for or...

Bimetallic lanthanide complexes that display a ratiometric response to oxygen concentrations† †Electronic supplementary information (ESI) available: Synthetic procedures, luminescence and NMR spectra, photophysical considerations, time-resolved emission profiles and luminescence lifetimes. See DOI: 10.1039/c4sc03827d Click here for additional data file.

Neutral cuprous complexes as ratiometric oxygen gas sensors.

Four neutral mononuclear Cu(I) complexes, [Cu(pyin)(PPh(3))(2)] (1a), [Cu(pyin)(DPEphos)] (1b), [Cu(quin)(PPh(3))(2)] (2a) and [Cu(quin)(DPEphos)] (2b) (Hpyin = 2-(2-pyridyl)indole, Hquin = 2-(2-quinolyl)indole and DPEphos = bis(2-(diphenylphosphino)phenyl)ether) have been synthesized. X-Ray crystal structure analysis revealed that the central Cu(I) ion in all complexes is in a distorted tetrah...

Controlling energy transfer in ytterbium complexes: oxygen dependent lanthanide luminescence and singlet oxygen formation.

Pyrene-appended ytterbium complexes have been prepared using Ugi reactions to vary the chromophore-lanthanide separation. Formation of the ytterbium(iii) excited state is sensitised via both the singlet and triplet excited states of the chromophore. Energy transfer from the latter is relatively slow, and gives rise to oxygen-dependent luminescence.

Thermogravimetric Studies on Bimetallic Dithiocarbamate Complexes+

Thermogravimetric (TG) studies have been carried out for some bimetallic dithiocarbamate complexes o f the type ZnML4 and NiM 'L4 [M = Co(II), Cu(II); M' = Zn(II), Hg(II); L = N-methylcyclohexyldithiocarbamate; L' = N-ethylcyclohexyldithiocarbamate]. From TG curves, the order, apparent activation energy and apparent activation entropy for the thermal decomposition reaction have been calculated....