Alexandra NefedovaUniversity of Tartu · Department of Material Scienses
Alexandra Nefedova
About
7
Publications
1,528
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
43
Citations
Citations since 2017
Introduction
Skills and Expertise
Education
September 1994 - May 1999
Publications
Publications (7)
Nanomaterials are prospective candidates for the elimination of viruses due to their multimodal mechanisms of action. Here, we tested the antiviral potential of a largely unexplored nanoparticle of cerium dioxide (CeO2). Two nano-CeO2 with opposing surface charge, (+) and (−), were assessed for their capability to decrease the plaque forming units...
Nanomaterials have been proposed as good candidates for the elimination of viruses due to their multimodal mechanisms of action. Here, we tested the antiviral potential of cerium dioxide (CeO2) nanoparticles which is largely unexplored.
Two types of nano-CeO2 particles with opposing surface charge, nano-CeO2(+) and nano-CeO2(-), were assessed for t...
We use two water based synthetic approaches to LaF3:Nd3+ nanoparticles (NPs), hydrothermal microwave treatment (HTMW) and co-precipitation (CO) technique, with different temperature of the reaction mixture to study the correlation between the degree of crystallinity of LaF3:Nd3+ NPs and their fluorescence properties. We showed that the fluorescence...
The fluorescence kinetics and spectral intensity ratio (FIR) methods for contactless optical temperature measurement in the NIR spectral range with Nd³⁺ doped YAG micro- and YPO4 nanocrystals are considered and the problems are revealed. The requirements for good temperature RE doped crystalline nanoparticles sensor are formulated.
Questions
Question (1)
Does anyone has an experience with sodium tert-butoxide? How dangerous it actually is?
Do I need to use a glovebox while weighting and handling it?
Do I have to dissolve it in THF at -30C or room temperature will also do?
How do you store it after the can is opened?
We have 100g of sodium tert-butoxide in total, the planned amount for my synthesis is ca. 1.5 g.
Projects
Project (1)
The idea is to understand how the real structure (I'm afraid the term is popular mostly in Russia and other former USSR states - the level from point defects to pores and surfaces) affects the luminescent properties of nanocrystalline materials. And to find the synthetic approaches that will allow to control the real structure in a way that desired luminescent characteristics (such as minimal quenching, position of absorbtion/emission bands and degree of their widening etc.) are achieved.
