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l-Histidine coated iron oxide nanoparticles: Synthesis, structural and conductivity characterization.(Report)

To link to full-text access for this article, visit this link: http://dx.doi.org/10.1016/j.jallcom.2010.06.022 Byline: B. Anal (a), Z. Durmus (b), A. Baykal (b), H. Sozeri (c), M.S. Toprak (d), L. Alpsoy (e) Keywords: l-Histidine; Magnetic nanoparticles; Surface modification; Magnetic property condu... Full description

Journal Title: Journal of Alloys and Compounds August 27, 2010, Vol.505(1), p.172(7)
Main Author: Anal, B.
Other Authors: Durmus, Z. , Baykal, A. , Sozeri, H. , Toprak, M. S. , Alpsoy, L.
Format: Electronic Article Electronic Article
Language: English
Subjects:
Quelle: Cengage Learning, Inc.
ID: ISSN: 0925-8388
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recordid: gale_ofa233982277
title: l-Histidine coated iron oxide nanoparticles: Synthesis, structural and conductivity characterization.(Report)
format: Article
creator:
  • Anal, B.
  • Durmus, Z.
  • Baykal, A.
  • Sozeri, H.
  • Toprak, M. S.
  • Alpsoy, L.
subjects:
  • Nanoparticles -- Analysis
  • Magnetite -- Analysis
  • Iron Compounds -- Analysis
  • Ferric Oxide -- Analysis
ispartof: Journal of Alloys and Compounds, August 27, 2010, Vol.505(1), p.172(7)
description: To link to full-text access for this article, visit this link: http://dx.doi.org/10.1016/j.jallcom.2010.06.022 Byline: B. Anal (a), Z. Durmus (b), A. Baykal (b), H. Sozeri (c), M.S. Toprak (d), L. Alpsoy (e) Keywords: l-Histidine; Magnetic nanoparticles; Surface modification; Magnetic property conductivity Abstract: l-Histidine capped iron oxide nanoparticles (HCIO) have been synthesized in one pot in the presence of l-histidine. The final product was analyzed for composition, microstructure, ac-dc conductivity performance as well as dielectric permittivity. Results revealed that magnetic nanoparticles are maghemite (or magnetite) and l-histidine is covalently bonded to the nanoparticle surface via carboxyl groups. Thermal analysis revealed that magnetic nanoparticles showed catalytic effect that caused an early degradation/decomposition of the l-histidine capping. Near spherical morphology was assessed by TEM and particle size calculated from TEM analysis and crystallite size calculated from XRD analysis reveal single crystalline nature of iron oxide NPs. Magnetic measurements reveal the superparamagnetic character of the nanoparticles, hence the nanocomposite. The ac conductivity showed a temperature-dependent behavior at low frequencies and temperature independent behavior at high frequencies which is an indication of ionic conductivity. The dc conductivity of the nanocomposites is found to obey the Arrhenius plot with activation energy of 0.934eV. Analysis of electrical modulus and dielectric permittivity functions suggest that ionic and polymer segmental motions are strongly coupled in the nanocomposite. Author Affiliation: (a) Department of Physics, Fatih University, B. Cekmece, 34500 Istanbul, Turkey (b) Department of Chemistry, Fatih University, B. Cekmece, 34500 Istanbul, Turkey (c) TUBITAK-UME, National Metrology Institute, PO Box 54, 41470, Gebze-Kocaeli, Turkey (d) Department of Functional Materials, Royal Institute of Technology, SE16440 Stockholm, Sweden (e) Department of Biology, Fatih University, B. Cekmece, 34500 Istanbul, Turkey Article History: Received 5 February 2010; Accepted 5 June 2010
language: English
source: Cengage Learning, Inc.
identifier: ISSN: 0925-8388
fulltext: fulltext
issn:
  • 0925-8388
  • 09258388
url: Link


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titlel-Histidine coated iron oxide nanoparticles: Synthesis, structural and conductivity characterization.(Report)
creatorAnal, B. ; Durmus, Z. ; Baykal, A. ; Sozeri, H. ; Toprak, M. S. ; Alpsoy, L.
ispartofJournal of Alloys and Compounds, August 27, 2010, Vol.505(1), p.172(7)
identifierISSN: 0925-8388
subjectNanoparticles -- Analysis ; Magnetite -- Analysis ; Iron Compounds -- Analysis ; Ferric Oxide -- Analysis
descriptionTo link to full-text access for this article, visit this link: http://dx.doi.org/10.1016/j.jallcom.2010.06.022 Byline: B. Anal (a), Z. Durmus (b), A. Baykal (b), H. Sozeri (c), M.S. Toprak (d), L. Alpsoy (e) Keywords: l-Histidine; Magnetic nanoparticles; Surface modification; Magnetic property conductivity Abstract: l-Histidine capped iron oxide nanoparticles (HCIO) have been synthesized in one pot in the presence of l-histidine. The final product was analyzed for composition, microstructure, ac-dc conductivity performance as well as dielectric permittivity. Results revealed that magnetic nanoparticles are maghemite (or magnetite) and l-histidine is covalently bonded to the nanoparticle surface via carboxyl groups. Thermal analysis revealed that magnetic nanoparticles showed catalytic effect that caused an early degradation/decomposition of the l-histidine capping. Near spherical morphology was assessed by TEM and particle size calculated from TEM analysis and crystallite size calculated from XRD analysis reveal single crystalline nature of iron oxide NPs. Magnetic measurements reveal the superparamagnetic character of the nanoparticles, hence the nanocomposite. The ac conductivity showed a temperature-dependent behavior at low frequencies and temperature independent behavior at high frequencies which is an indication of ionic conductivity. The dc conductivity of the nanocomposites is found to obey the Arrhenius plot with activation energy of 0.934eV. Analysis of electrical modulus and dielectric permittivity functions suggest that ionic and polymer segmental motions are strongly coupled in the nanocomposite. Author Affiliation: (a) Department of Physics, Fatih University, B. Cekmece, 34500 Istanbul, Turkey (b) Department of Chemistry, Fatih University, B. Cekmece, 34500 Istanbul, Turkey (c) TUBITAK-UME, National Metrology Institute, PO Box 54, 41470, Gebze-Kocaeli, Turkey (d) Department of Functional Materials, Royal Institute of Technology, SE16440 Stockholm, Sweden (e) Department of Biology, Fatih University, B. Cekmece, 34500 Istanbul, Turkey Article History: Received 5 February 2010; Accepted 5 June 2010
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descriptionTo link to full-text access for this article, visit this link: http://dx.doi.org/10.1016/j.jallcom.2010.06.022 Byline: B. Anal (a), Z. Durmus (b), A. Baykal (b), H. Sozeri (c), M.S. Toprak (d), L. Alpsoy (e) Keywords: l-Histidine; Magnetic nanoparticles; Surface modification; Magnetic property conductivity Abstract: l-Histidine capped iron oxide nanoparticles (HCIO) have been synthesized in one pot in the presence of l-histidine. The final product was analyzed for composition, microstructure, ac-dc conductivity performance as well as dielectric permittivity. Results revealed that magnetic nanoparticles are maghemite (or magnetite) and l-histidine is covalently bonded to the nanoparticle surface via carboxyl groups. Thermal analysis revealed that magnetic nanoparticles showed catalytic effect that caused an early degradation/decomposition of the l-histidine capping. Near spherical morphology was assessed by TEM and particle size calculated from TEM analysis and crystallite size calculated from XRD analysis reveal single crystalline nature of iron oxide NPs. Magnetic measurements reveal the superparamagnetic character of the nanoparticles, hence the nanocomposite. The ac conductivity showed a temperature-dependent behavior at low frequencies and temperature independent behavior at high frequencies which is an indication of ionic conductivity. The dc conductivity of the nanocomposites is found to obey the Arrhenius plot with activation energy of 0.934eV. Analysis of electrical modulus and dielectric permittivity functions suggest that ionic and polymer segmental motions are strongly coupled in the nanocomposite. Author Affiliation: (a) Department of Physics, Fatih University, B. Cekmece, 34500 Istanbul, Turkey (b) Department of Chemistry, Fatih University, B. Cekmece, 34500 Istanbul, Turkey (c) TUBITAK-UME, National Metrology Institute, PO Box 54, 41470, Gebze-Kocaeli, Turkey (d) Department of Functional Materials, Royal Institute of Technology, SE16440 Stockholm, Sweden (e) Department of Biology, Fatih University, B. Cekmece, 34500 Istanbul, Turkey Article History: Received 5 February 2010; Accepted 5 June 2010
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abstractTo link to full-text access for this article, visit this link: http://dx.doi.org/10.1016/j.jallcom.2010.06.022 Byline: B. Anal (a), Z. Durmus (b), A. Baykal (b), H. Sozeri (c), M.S. Toprak (d), L. Alpsoy (e) Keywords: l-Histidine; Magnetic nanoparticles; Surface modification; Magnetic property conductivity Abstract: l-Histidine capped iron oxide nanoparticles (HCIO) have been synthesized in one pot in the presence of l-histidine. The final product was analyzed for composition, microstructure, ac-dc conductivity performance as well as dielectric permittivity. Results revealed that magnetic nanoparticles are maghemite (or magnetite) and l-histidine is covalently bonded to the nanoparticle surface via carboxyl groups. Thermal analysis revealed that magnetic nanoparticles showed catalytic effect that caused an early degradation/decomposition of the l-histidine capping. Near spherical morphology was assessed by TEM and particle size calculated from TEM analysis and crystallite size calculated from XRD analysis reveal single crystalline nature of iron oxide NPs. Magnetic measurements reveal the superparamagnetic character of the nanoparticles, hence the nanocomposite. The ac conductivity showed a temperature-dependent behavior at low frequencies and temperature independent behavior at high frequencies which is an indication of ionic conductivity. The dc conductivity of the nanocomposites is found to obey the Arrhenius plot with activation energy of 0.934eV. Analysis of electrical modulus and dielectric permittivity functions suggest that ionic and polymer segmental motions are strongly coupled in the nanocomposite. Author Affiliation: (a) Department of Physics, Fatih University, B. Cekmece, 34500 Istanbul, Turkey (b) Department of Chemistry, Fatih University, B. Cekmece, 34500 Istanbul, Turkey (c) TUBITAK-UME, National Metrology Institute, PO Box 54, 41470, Gebze-Kocaeli, Turkey (d) Department of Functional Materials, Royal Institute of Technology, SE16440 Stockholm, Sweden (e) Department of Biology, Fatih University, B. Cekmece, 34500 Istanbul, Turkey Article History: Received 5 February 2010; Accepted 5 June 2010
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