The proposed interdisciplinary project perceive the resolution of problems widely investigated in the field of luminescent up-converting nanomaterials, such as stabilization, modification, (bio)functionalization of the surface and toxicity of materials which will result in design and preparation of multifunctional nanomaterials with improved performance.
Nowadays, the optimization and development of synthetic methods which provide materials of high phase purity, crystallinity, uniformity of size, morphology, and composition are one of the most challenging problems in materials science. In order to obtain this kind of inorganic up-converting luminescent nanoparticles, several distinct methods of synthesis will be used: methods of colloidal chemistry, inverse micelle technique, co-precipitation, microwave hydrothermal, sol-gel, molten salt and solid-state route.
During the research project, various groups of luminescent up-converting nanomaterials will be produced, coated and modified. Among them are: metal oxides (TiO2, ZnO, ZrO2, HfO2), aluminates (SrAlO4), silicates (SrSiO4), phosphates (APO4, A = La, Y, Gd,Lu), vanadates (e.g. GdVO4), fluorides (NaYF4, LaF4), and oxysulphides (e.g. Gd2O2S). Additionally, proposed structures might be employed as solid-state laser amplifiers, counterfeiting labels, as well as a contrast agent for multimodal imaging, cancer detection, photodynamic therapy and drug delivery.
Teksts latviešu valodā pieejams šeit: http://www.lum.lv/jauni-nanoizmeru-oksidu-materiali-ar-upconversion-luminiscenci/