Volume 5, Issue 1, June 2019, Page: 11-15
Laser-Induced Fluorescence of Wet Porous Silicon as Laser-Induced Fluorescence of H3O+
Yuri Pivovarenko, Research and Training Centre ‘Physical and Chemical Materials Science’ Under Kyiv Taras Shevchenko University and NAS of Ukraine, Kiev, Ukraine
Received: Mar. 7, 2019;       Accepted: Apr. 12, 2019;       Published: May 20, 2019
DOI: 10.11648/j.jmpt.20190501.13      View  783      Downloads  86
Typically, the production of porous silicon is an electrochemical etching of monocrystalline silicon wafers, which are connected to the anode, in ethanol-aqueous HF solutions. In the process of etching, it turns out porous silicon, which is saturated with water, which is rich in protonated molecules H3O+, formed as a result of a number of well-known physicochemical processes. At the same time, the presence of molecules of such protonated water in the composition of freshly prepared porous silicon is usually ignored. At the same time, both the ability of protonated water to fluoresce under the action of laser radiation in the UV range, and the possible contribution of such fluorescence to the total fluorescence of porous silicon induced by a UV laser is ignored. Since such ignoring seems to be incorrect, the possible contribution of laser fluorescence of water enriched with its protonated molecules to the laser fluorescence of moistened porous silicon is discussed here. Since this may be important for the correct interpretation of the results obtained when studying the spectra of laser-induced fluorescence of porous silicon moistened with aqueous solutions, in particular – with aqueous solutions of biological substances, the unique properties of such water are also demonstrated. Thus, the exceptional penetrating ability of positively charged water is visualized, due to which it is able to transfer from the hydrated shells of biopolymers to porous silicon and enhance its laser-induced fluorescence. It also demonstrates the exceptional ability of positively charged water to evaporate; which makes it possible to explain the rapid disappearance of the fluorescence of porous silicon, which is observed during its drying.
Fluorescence, Porous Silicon, Positively Charged Water
To cite this article
Yuri Pivovarenko, Laser-Induced Fluorescence of Wet Porous Silicon as Laser-Induced Fluorescence of H3O+, Journal of Photonic Materials and Technology. Vol. 5, No. 1, 2019, pp. 11-15. doi: 10.11648/j.jmpt.20190501.13
Copyright © 2019 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Feng Z. and Tsu R. (1994) Porous Silicon. Singapore: World Scientific. ISBN 981-02-1634-1633
Zhou Z., Brus L. and Friesner R. (2003) Electronic Structure and Luminescence of 1.1- and 1.4-nm Silicon Nanocrystals:  Oxide Shell versus Hydrogen Passivation, Nano Lett, 3, 163-167
Sailor M. J. (2012) Porous Silicon in Practice: Preparation, Characterization and Applications. Weinheim: Wiley-VCH
Syshchyk O., Skryshevsky V. A., Soldatkin O. O. and Soldatkin A. P. (2015) Enzyme biosensor systems based on porous silicon photoluminescence for detection of glucose, urea and heavy metals // Biosensors and Bioelectronics, 66, 89-94
Nekrasov B. V. (1974) Bases general chemistry, 1. Moscow: Chemistry. In Russian
Lew H. (1976) Electronic spectrum of H2O+. Canadian Journal of Physics, 54(20), 2028-2049
Krasnogorskaya N. V. (1984) Electromagnetic fields in the atmosphere of the Earth and their biological significance, 1. Moscow: Nauka. In Russian
Pivovarenko Y. (2015) A Charge Distribution in the Earth’s Atmosphere. American Journal of Physics and Applications, 3(3), 67-68
Pivovarenko Y. (2017) Potential-Dependent Changes of the Surface Tension of Water. Fluid Mechanics, 3(4), 29-32
Pivovarenko Y. (2018) ±Water: Demonstration of water properties, depending on its electrical potential. World Journal of Applied Physics, 3(1), 13-18
Pivovarenko Y. (2017) The Electric Potential of the Tissue Liquids of Living Organisms as a Possible Epigenetic Factor. Chemical and Biomolecular Engineering, 2(3), 159-164
Spangenberg J. E. and Vennemann T. W. (2008) The stable hydrogen and oxygen isotope variation of water stored in polyethylene terephthalate (PET) bottles. Rapid Commun. Mass Spectrom, 22, 672-676
Shevchenko V. B., Datsenko A. I., Shablykin O. V., Osadchuk T. V., Lyakhov A M., Pivovarenko Yu. V. and Makara V. A. (2012) Determination of ROS in the presence of biologically active substances by fluorescence of porous silicon. Ukrainian Biochemical Journal, 84(4), 67-71. In Russian
Saenger V. (1987) Principles of structural organization of nucleic acids. Moscow: Mir. In Russian
Pivovarenko, Y. (2017) An alternative strategy in cancer chemotherapy, aimed not at killing cancer cells, but the recovery of their DNA, modified by active oxygen // Biomedical Sciences, 3(5), 94-98
Shpolsky, E. V. (1974) Atomic Physics, 1. Moscow: Nauka. In Russian.
Tsu R., Bablic D. and Ioriatti L. Jr. (1997) Simple model for the dielectric constant of nanoscale silicon particle. J. Aрpl. Phys, 82(3), 1327-1329.
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