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Optics and Spectroscopy, 2018, Volume 125, Issue 2, Pages 234–239
DOI: https://doi.org/10.21883/OS.2018.08.46366.86-18
(Mi os937)
 

This article is cited in 5 scientific papers (total in 5 papers)

Optics of low-dimensional structures, mesostructures, and metamaterials

Surface plasmon resonance and aggregate stability of silver nanoparticle complexes with chemotripsin

A. V. Plyushchenkoab, K. A. Mitusovab, L. N. Borovikovaa, A. I. Kippera, O. A. Pisarevab

a Institute of Macromolecular Compounds, Russian Academy of Sciences, St. Petersburg, 199004, Russia
b Peter the Great St. Petersburg Polytechnic University, St. Petersburg, 195251, Russia
Full-text PDF (588 kB) Citations (5)
Abstract: Extinction spectra, effective sizes, and aggregate stability of silver nanoparticles and nanocomplexes of silver nanoparticles with chymotrypsin obtained by the reactions of chemical reduction of silver nitrate using sodium borohydride as a reducing agent are studied. It is shown that silver nanoparticles obtained in the absence of chymotrypsin are aggregatively stable only at pH values immediately after synthesis. The placement of the synthesized silver nanoparticles in buffer solutions with pH values from 3.0 to 12.0 resulted in the appearance of a wide absorption band in the visible region of the spectrum, which is due to the agglomeration of silver nanoparticles, which appears to be the result of the destruction of the double electric layer formed by the ions making up sodium borohydride. The presence of chymotrypsin in the reaction medium resulted in significant spectral changes. Unlike silver nanoparticles synthesized in the absence of chymotrypsin, for nanocomplexes of silver nanoparticles with chymotrypsin with a change in pH, the shape of the extinction spectra and the position of the surface plasmon resonance band were preserved, while nanocomplexes of silver nanoparticles with chymotrypsin retained the aggregative stability in solutions in the pH range from 3.0 to 12.0 within a month. The observed stabilization effect of silver nanoparticles over a wide pH range induced by the presence of chymotrypsin in the reaction medium can be used further to develop methods for immobilizing enzymes on nanoparticles of biogenic elements and for creating polyfunctional pharmaceuticals, in which the components of nanocomplexes have different biological activity.
Received: 23.03.2018
English version:
Optics and Spectroscopy, 2018, Volume 125, Issue 2, Pages 243–248
DOI: https://doi.org/10.1134/S0030400X18080192
Bibliographic databases:
Document Type: Article
Language: Russian
Citation: A. V. Plyushchenko, K. A. Mitusova, L. N. Borovikova, A. I. Kipper, O. A. Pisarev, “Surface plasmon resonance and aggregate stability of silver nanoparticle complexes with chemotripsin”, Optics and Spectroscopy, 125:2 (2018), 234–239; Optics and Spectroscopy, 125:2 (2018), 243–248
Citation in format AMSBIB
\Bibitem{PlyMitBor18}
\by A.~V.~Plyushchenko, K.~A.~Mitusova, L.~N.~Borovikova, A.~I.~Kipper, O.~A.~Pisarev
\paper Surface plasmon resonance and aggregate stability of silver nanoparticle complexes with chemotripsin
\jour Optics and Spectroscopy
\yr 2018
\vol 125
\issue 2
\pages 234--239
\mathnet{http://mi.mathnet.ru/os937}
\crossref{https://doi.org/10.21883/OS.2018.08.46366.86-18}
\elib{https://elibrary.ru/item.asp?id=35270069}
\transl
\jour Optics and Spectroscopy
\yr 2018
\vol 125
\issue 2
\pages 243--248
\crossref{https://doi.org/10.1134/S0030400X18080192}
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  • https://www.mathnet.ru/eng/os/v125/i2/p234
  • This publication is cited in the following 5 articles:
    Citing articles in Google Scholar: Russian citations, English citations
    Related articles in Google Scholar: Russian articles, English articles
    Optics and Spectroscopy Optics and Spectroscopy
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