Synthesis and characterization of nanostructured europium(III) complexes containing gold nanoparticles

Sol–Gel Processed Lasers and Related Optical Materials

“…An example of increase of Eu complex luminescence by silver NPs has been recently described in Reisfeld et al (2009aReisfeld et al ( , b, 2011and Reisfeld (2010). The increase of Eu complex with gold NPs is reported in (Levchenko et al 2011) and recently was shown that inexpensive copper NPs (CuNPs) have the same effect of increase of luminescence (Reisfeld et al 2007(Reisfeld et al , 2014(Reisfeld et al , 2016aGerasymchuk et al 2015;Kaczmarek et al 2001;Khuyen et al 2015).…”

“…Therefore, in order to overcome this difficulty, there is a need to use systems in which the absorption and emissions arise from different levels. This can be achieved either using proton transfer compounds (Kaczmarek et al 2001;Huskowska et al 2002;Khuyen et al 2015;Reisfeld et al 2016aReisfeld et al , b, 2007Saraidarov et al 2010) or using the specific properties of luminescence of lanthanide complexes (Reisfeld 2004c;Enami et al 2007;Lehn 1987;Comes 1990).…”

Optimization of Tb3+/Gd3+ Molar Ratio for Rapid Detection of Naja Atra Cobra Venom by Immunoglobulin G-Conjugated GdPO4·nH2O : Tb3+ Nanorods

“…Rare earth-containing luminescent nanomaterials have drawn a special interest for telecommunication, imaging, lightning, fluorescent security labelling, and biomedical applications due to their attractive physical and optical properties, biocompatibility, environmentally friendly characteristics, and nontoxicity and especially due to their high efficiency [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18]. These materials exhibited outstanding performances such as strong, stable luminescent intensity with a large Stock shift, narrow peak width, and long luminescent lifetime [6]. This luminescent lifetime of these materials is significantly longer, up to milliseconds, in comparison to that of quantum dots or organic luminescent materials.…”

“…Many targeted applications such as fluorescent labelling [19], drug delivery [20], and imaging for detecting biological species like virus, bacteria, cell, DNA, RNA molecules, or proteins [15,18,19] of new hybrid nanophosphors containing rare-earth elements (Eu, Tb, and Er) with various host materials (GdPO 4 , Gd 2 O 3 , YVO 4 , and NaYF 4 ) have been carried out so far [20][21][22][23][24][25]. For the synthesis of these materials, numerous chemical methods of luminescent nanomaterials containing rare earth elements have been used such as coprecipitation [5], sol-gel Pechini [6], and hydrothermal/solvothermal method [26][27][28][29]. Among these hybrid nanophosphors, Tb 3+ -doped GdPO 4 •nH 2 O nanomaterials are found to be one of the most promising candidates for these abovementioned applications due to these nanomaterials that exhibit strong luminescent intensity, paramagnetic behavior, no toxicity, and ability to minimize photobleaching and photochemical decomposition [22,23,[30][31][32][33].…”