Facile preparation of quantum cutting GdF₃ : Eu3+nanoparticles from ionic liquids

Abstract

Microwave reaction of Ln(OAc) 3 ÁxH 2 O, Ln = Gd, Eu; OAc = acetate) with and in the ionic liquid [C 4 mim][BF 4 ] (C 4 mim = 1-butyl-3-methylimidazolium) allows the fast and efficient synthesis of small, uniform, oxygen-free lanthanide nanofluorides with excellent photophysical behaviour. For GdF 3 : Eu 3+ nanoparticles a quantum efficiency of up to 145% was determined.Energy-efficient lighting is a prevailing topic. It is estimated that remarkable amounts electricity can be saved when more energy-efficient light sources are used.

Lanthanide‐Doped Multicolor GdF3 Nanocrystals for Time‐Resolved Photoluminescent Biodetection

“…The as-prepared solution remains very stable in air for more than a month and no precipitate or aggregate was observed. Moreover, the NC solution is also very stable in NaCl solution ( 300 mm) and under different pH conditions (5)(6)(7)(8)(9)(10)(11)(12), showing that the GdF 3 :Ln 3 + NC solution could withstand various biological conditions.…”

“…[10] Consequently, Ln 3 + -doped Gd 3 + -containing NCs can serve as both multicolor luminescent biolabels and Ln 3 + -doped GdF 3 NCs were synthesized through a modified one-step solvothermal route. [7c,11] Poly(acrylic acid) (PAA, MW = 1800) was chosen as the capping agent to control the growth of NCs, and endow these NCs with watersolubility and biocompatibility ( Figure S1 in the Supporting Information).…”

Ionic Liquid‐based Synthesis—A Low‐Temperature Route to Nanophosphates

“…The difference was most obvious for nano-GdPO 4 which also was the least crystalline sample judging from TEM and PXRD. Here, the 5 D 0 ! 7 F 2 emission also gives rise to the intense orange-red emission of high color purity, as shown in the color coordinates diagram (Figure 2 b).…”

Charge compensation in RE3+ (RE = Eu, Gd) and M+ (M = Li, Na, K) co-doped alkaline earth nanofluorides obtained by microwave reaction with reactive ionic liquids leading to improved optical properties

“…A fast and facile reaction procedure to impurity-free lanthanide uorides in the microwave oven taking advantage of the extraordinary microwave susceptibility of ILs was developed by us. 22 The ionic liquid not only acts as a solvent and stabilizer, but also as a reactant providing the uoride ion under decomposition at elevated temperatures. The universal application of this method was proven with the preparation of highly doped alkaline earth nanouorides.…”