Effect of silver nanoparticles on luminescent properties of europium complex in di-ureasil hybrid materials

Effects of Noble Metal Nanoparticles on the Luminescent Properties of Europium Complex

“…They also found that although there was no energy transfer from noble nanoparticles to Eu ion, the fluorescence intensity of Eu ion was enhanced by the intensified electromagnetic field around Eu ion, based on the SPR of noble nanoparticles. However, the enhancement factor (<10) reported in these works is far lower than the theoretic value (1 10 3 ) [21][22][23][24][25][26][27][28] With the desirability to improve the enhancement factor, the Eu complexes were coated on the surface of silver nanoparticles by the interaction between the Eu complexes and silver nanoparticles [29]. Although there was SEF based on SPR of silver nanoparticles, the fluorescence quenching was observed due to the condensed Jaggregation of Eu complexes and the energy transfer between Eu ion and silver nanoparticles [29][30][31].…”

“…Several points contribute to these lacks. Firstly, the distance between noble nanoparticles and Eu ion are difficult to be controlled according to the previous works [21][22][23][24][25][26][27][28][29][30][31][32][33][34][35][36][37]. Secondly, the absorption of noble nanoparticles is few discussions on improving fluorescence efficiency and intensity of Eu complexes.…”