Akademik Veri Yönetim Sistemi
7th European Symposium of Photopolymer Science, İstanbul, Türkiye, 19 - 22 Eylül 2022, ss.76
In the studies carried out to understand the interaction between gold nanoparticles (AuNps) and rare earth element salts, it has been revealed that there is an aurophilic interaction between the surface of gold nanoclusters and lanthanides [1]. Using this aurophilic interaction, Scaiano et al. showed that thiol coated AuNps perform ligand displacement in the presence of rare earth salts such as YCl₃, YbCl₃, or TmCl₃, and that as a result of the displacement, agglomeration occurs because of the molecular interactions between AuNps. It was also reported that the Surface Plasmon Resonance (SPR) band observed in the presence of AuNps-Thiol shifted to the NIR region with the added salt [2].
In this study, the AuNps were synthesized by a photochemical reduction method using a thioxanthone derivative photoinitiator followed by addition of EuCl₃, GdCl₃ and TbCl₃ salt solutions to form the AuNp-lanthanide complexes. After each addition of lanthanide, the change in the SPR band of the AuNps was recorded with a UV-vis spectrophotometer and the change in luminescence intensity of the photoinitiator and rare earth elements was examined using a fluorescence spectrophotometer.
In order to investigate the effect of rare earth elements on nanoparticle size and stability, ZETA potential measurements, DLS measurements and SEM analysis were performed.
Studies on the use of nanoparticles that are loaded with rare earth elements for drug delivery and imaging are in progress.
This work was supported by Yildiz Technical University research fund for Multidisciplinary Research Project. Project ID: FCD-2021-4484.