Міжвідомчий Науково-методичний збірник
"Криміналістика і судова експертиза"
ISSN: 0130-2655
PDF Верстка Криміналістика 2019 6.05. 521 528 Завантажень: 1, розмiр: 343.8 KB

DOI: https://doi.org/10.33994/kndise.2019.64.47

P. Teselko; V. Shevchenko

In the work, the modification of photoluminescence spectra in the processing of porous silicon in aqueous solutions with different oxygen contents and aqueous solutions of amino acids was studied in order to further create a sensor sensitive to chemically active oxygen near the surface of porous silicon in the presence of various amino acids. he growth of the photoluminescence intensity at the processing of porous silicon in distilled water and the sensitivity of the intensity of photoluminescence to the oxygen content in water are revealed. It is proposed to use a change in the intensity of luminescence to study the properties of biomolecules, namely the determination of the amount of chemically active oxygen near the surface of porous silicon in the presence of various amino acids.

Changing the sizes of nanocrystals is the main reason for increasing the intensity of photoluminescence when processing porous silicon in aqueous solutions. After applying to the surface of samples of porous silicon aqueous solutions of glycine, alanine, phenylalanine, the intensity of photoluminescence varies for all samples. Changing the sizes of nanocrystals is the main reason for increasing the intensity of photoluminescence when processing porous silicon in aqueous solutions. After applying to the surface of samples of porous silicon aqueous solutions of glycine, alanine, phenylalanine, the intensity of photoluminescence varies for all samples.

Key words: photoluminescence, nanostructured porous silicon, biosensors.