ERDF Post Doc project No. Novel nanosized upconverting oxide materials for practical applications

Main scope:

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.

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UPDATES for ERDF Post Doc project No. Novel nanosized upconverting oxide materials for practical applications

We are happy to announce that significant progress has been recently accomplished and four different methods for preparation of phosphors based on phosphate and vanadate host were developed and optimized: high temperature solid-state, co-precipitation, reverse micelle and colloidal route.
Samples with particles of different morphology and size with satisfactory luminescent intensity were obtained. At this moment, some of them incorporated in silica waveguides could find potential
pplication for enhancement of 1.3 μm photoluminescence.
The work investigating luminescent lanthanum nanoparticles was presented at international conference ‘’Spectral shaping for biomedical and energy applications’’, SHIFT 2017, 13-17 November, Tenerife, Spain.
The article, with detailed study of nanoparticle’s size effect on structural and optical properties of doped lanthanum and europium phosphate has been accepted for publication, which can be found online. Also, very proud to report that a joint manuscript between our team and researchers from Italy, Vietnam, Poland and Serbia studying phosphors based on vanadate host has been submitted and accepted for publication.
We will continue our work, hopefully acquiring materials with improved performances, and attractive practical applications.

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