Luminescent lanthanide sensors for pH, pO2 and selected anions

Interpretation of europium(III) spectra

“…Molecular oxygen is an external triplet quencher. Quenching of the triplet state by dissolved oxygen in a solution is a competitive process with energy transfer from the triplet state to the lanthanide ion [97].…”

Slow Magnetic Relaxation in Chiral Helicene-Based Coordination Complex of Dysprosium

“…The versatility of ligand chemistry can be exploited in this sense and may offer the possibility to have in a single compound, for instance, a magnetic emitting nanodevice [13][14][15]. Indeed, lanthanides have been intensively studied for their peculiar luminescence that covers a broad range of frequencies (from visible to near IR) with sharp line shape emission bands and long lifetime of the excited states [16][17][18][19][20][21][22]. However, they show very low absorption coefficients, since the f-f transitions are indeed prohibited (Laporte rule) [23].…”

Exceptional Oxygen Sensing Properties of New Blue Light‐Excitable Highly Luminescent Europium(III) and Gadolinium(III) Complexes

“…[22] These complexes are widely applied as labels in various luminescence assays both as free dyes bearing a functional group for conjugation and in the form of dye-doped nanoparticles, [22,23] but application in optical sensors and analyte-sensitive probes is comparably rare. [24][25][26][27] For example, luminescent Eu(III) complexes were applied as optical temperature probes, [27][28][29][30][31] pH indicators, [32][33][34][35][36] fluoroionophores for bicarbonate, [37,38] citrate [39] and lactate [40] and as hydrogen peroxide [41] and nitrogen monooxide probes. [42] Several Eu(III) complexes were applied as luminescent oxygen indicators.…”