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Title: Electrical properties of R-phycoerythrin containing Ag{sup 0} nanoparticles in its channels

Abstract

The electrical properties of R-phycoerythrin modified with Ag{sup 0} nanoparticles (Ag{sup 0} • R-PE) as a candidate material for biosensors were studied were studied. Modification was ensured by a known procedure: synthesis of Ag{sup 0} nanoparticles in R-phycoerythrin channels through the addition of AgNO{sub 3} to an aqueous R-phycoerythrin solution. According to electron microscopy results, the Ag{sup 0} • R-PE contains predominantly elongated Ag{sup 0} nanoparticles 6.2 ± 0.5 nm in length, which form structures similar to rows 20–60 nm in length. The electrical conductivity, dielectric permittivity, and dielectric loss of the Ag{sup 0} • R-PE have been measured in the frequency range from 0.01 Hz to 1 MHz. Filling the channels in R-phycoerythrin molecules with Ag{sup 0} nanoparticles has been shown to increase the alternating current electrical conductivity and dielectric loss of the material at low frequencies by more than 200 times and its dielectric permittivity by 40 times. Ag{sup 0} nanoparticles increase the direct current conductivity of R-phycoerythrin from 5 × 10{sup –14} to 2.5 × 10{sup –11} S/cm. The electrical properties of Ag • R-PE are comparable to those of conductive polymer composites that contain metallic nanowires and are used in designing multifunctional films and smart materials.

Authors:
 [1];  [2]; ;  [3]
  1. Russian Academy of Sciences, Semenov Institute of Chemical Physics (Russian Federation)
  2. JSC Technopark Slava, Technological Center of Collective Use (Russian Federation)
  3. Russian Academy of Sciences, Bach Institute of Biochemistry, Fundamentals of Biotechnology Federal Research Centre (Russian Federation)
Publication Date:
OSTI Identifier:
22788339
Resource Type:
Journal Article
Journal Name:
Inorganic Materials
Additional Journal Information:
Journal Volume: 53; Journal Issue: 12; Other Information: Copyright (c) 2017 Pleiades Publishing, Ltd.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0020-1685
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY; ALTERNATING CURRENT; AQUEOUS SOLUTIONS; DIELECTRIC MATERIALS; DIRECT CURRENT; ELECTRIC CONDUCTIVITY; ELECTRON MICROSCOPY; MHZ RANGE; NANOPARTICLES; NANOWIRES; PERMITTIVITY; POLYMERS; SILVER; SILVER NITRATES; SYNTHESIS; THIN FILMS

Citation Formats

Bekasova, O. D., E-mail: bekasova@inbi.ras.ru, Ryvkina, N. G., Chmutin, I. A., Shtein-Margolina, V. A., and Kurganov, B. I. Electrical properties of R-phycoerythrin containing Ag{sup 0} nanoparticles in its channels. United States: N. p., 2017. Web. doi:10.1134/S0020168517120032.
Bekasova, O. D., E-mail: bekasova@inbi.ras.ru, Ryvkina, N. G., Chmutin, I. A., Shtein-Margolina, V. A., & Kurganov, B. I. Electrical properties of R-phycoerythrin containing Ag{sup 0} nanoparticles in its channels. United States. https://doi.org/10.1134/S0020168517120032
Bekasova, O. D., E-mail: bekasova@inbi.ras.ru, Ryvkina, N. G., Chmutin, I. A., Shtein-Margolina, V. A., and Kurganov, B. I. 2017. "Electrical properties of R-phycoerythrin containing Ag{sup 0} nanoparticles in its channels". United States. https://doi.org/10.1134/S0020168517120032.
@article{osti_22788339,
title = {Electrical properties of R-phycoerythrin containing Ag{sup 0} nanoparticles in its channels},
author = {Bekasova, O. D., E-mail: bekasova@inbi.ras.ru and Ryvkina, N. G. and Chmutin, I. A. and Shtein-Margolina, V. A. and Kurganov, B. I.},
abstractNote = {The electrical properties of R-phycoerythrin modified with Ag{sup 0} nanoparticles (Ag{sup 0} • R-PE) as a candidate material for biosensors were studied were studied. Modification was ensured by a known procedure: synthesis of Ag{sup 0} nanoparticles in R-phycoerythrin channels through the addition of AgNO{sub 3} to an aqueous R-phycoerythrin solution. According to electron microscopy results, the Ag{sup 0} • R-PE contains predominantly elongated Ag{sup 0} nanoparticles 6.2 ± 0.5 nm in length, which form structures similar to rows 20–60 nm in length. The electrical conductivity, dielectric permittivity, and dielectric loss of the Ag{sup 0} • R-PE have been measured in the frequency range from 0.01 Hz to 1 MHz. Filling the channels in R-phycoerythrin molecules with Ag{sup 0} nanoparticles has been shown to increase the alternating current electrical conductivity and dielectric loss of the material at low frequencies by more than 200 times and its dielectric permittivity by 40 times. Ag{sup 0} nanoparticles increase the direct current conductivity of R-phycoerythrin from 5 × 10{sup –14} to 2.5 × 10{sup –11} S/cm. The electrical properties of Ag • R-PE are comparable to those of conductive polymer composites that contain metallic nanowires and are used in designing multifunctional films and smart materials.},
doi = {10.1134/S0020168517120032},
url = {https://www.osti.gov/biblio/22788339}, journal = {Inorganic Materials},
issn = {0020-1685},
number = 12,
volume = 53,
place = {United States},
year = {Fri Dec 15 00:00:00 EST 2017},
month = {Fri Dec 15 00:00:00 EST 2017}
}