Luminescent properties of europium carboxylates

Studies of Sol-Gel Evolution and Distribution of Eu3+ Ions in Glass–Ceramics Containing LaF3 Nanocrystals Depending on Initial Sols Composition

“…Hence, such a tendency clearly indicates a growing degree of asymmetry in the immediate vicinity of the Eu 3+ ions in sol-gel samples in the following direction: SG1 → SG2 → SG3. Indeed, besides H 2 O molecules and CF 3 COO − anions, Eu 3+ ions are able to coordinate NO 3 − anions and DMF molecules [69]. Thus, the presence of such additional ligands is responsible for disturbing the symmetry in the local framework of Eu 3+ , and thereby the probability of the 5 D 0 → 7 F 2 transition can be enhanced, causing an observable increase in R/O ratio values.…”

Crystalline-to-semicrystalline transition in lanthanide trifluoroacetates: implications for optical pressure and temperature sensing

“…By contrast, when it comes to their light-emitting properties, only a handful of studies have been reported. [14][15][16][17][18][19][20][21] These reports probed the room-temperature photoluminescence of Ln(tfa) 3 (H 2 O) 3 as a means of elucidating structural details 14,[16][17][18] or of understanding the impact of organic sensitizers on lanthanide emission. 15,[19][20][21] The temperature dependence of the luminescence response of these materials has not been studied.…”

“…[14][15][16][17][18][19][20][21] These reports probed the room-temperature photoluminescence of Ln(tfa) 3 (H 2 O) 3 as a means of elucidating structural details 14,[16][17][18] or of understanding the impact of organic sensitizers on lanthanide emission. 15,[19][20][21] The temperature dependence of the luminescence response of these materials has not been studied. This is remarkable considering the widespread interest in identifying hybrid organic-inorganic platforms amenable to the design of lanthanide-based luminescent thermometers.…”