Electrical Properties of Nanocomposites Based on Comb-Shaped Nematic Polymer and Silver Nanoparticles Full article
Journal |
The Journal of Physical Chemistry C
ISSN: 1932-7447 , E-ISSN: 1932-7455 |
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Output data | Year: 2007, Volume: 111, Number: 24, Pages: 8451-8458 Pages count : 8 DOI: 10.1021/jp068688a | ||||||||||||
Tags | Copolymers; Dielectric spectroscopy; Glass transition; Nematic liquid crystals; Permittivity | ||||||||||||
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Abstract:
A nematic comb-shaped copolymer and its nanocomposites containing 0.063−0.54 in vol % of silver nanoparticles were studied by broadband dielectric spectroscopy. The frequency dependence of specific alternating current (ac) conductivity was used to estimate the temperature-frequency intervals of charge transfer by long and short distances, respectively. With increasing the concentration of nanoparticles, specific ac conductivity increases. The concentration dependence of dielectric permittivity suggests that distribution of nanoparticles is homogeneous, and conducting channels are not formed. With increasing the concentration of silver nanoparticles, the glass transition temperature of the nanocomposites, described in terms of the strength/fragility concept, increases, whereas the strength parameter D decreases (i.e., “fragility” increases).
Cite:
Nikonorova N.A.
, Barmatov E.B.
, Pebalk D.A.
, Barmatova M.V.
, Domínguez-Espinosa G.
, Diaz-Calleja R.
, Pissis P.
Electrical Properties of Nanocomposites Based on Comb-Shaped Nematic Polymer and Silver Nanoparticles
The Journal of Physical Chemistry C. 2007. V.111. N24. P.8451-8458. DOI: 10.1021/jp068688a WOS Scopus РИНЦ
Electrical Properties of Nanocomposites Based on Comb-Shaped Nematic Polymer and Silver Nanoparticles
The Journal of Physical Chemistry C. 2007. V.111. N24. P.8451-8458. DOI: 10.1021/jp068688a WOS Scopus РИНЦ
Dates:
Submitted: | Dec 18, 2006 |
Accepted: | Apr 23, 2007 |
Published online: | May 31, 2007 |
Published print: | Jun 1, 2007 |
Identifiers:
Web of science | WOS:000247215200010 |
Scopus | 2-s2.0-34547353316 |
Elibrary | 13554998 |
Chemical Abstracts | 2007:583655 |
Chemical Abstracts (print) | 147:177865 |
OpenAlex | W2137668947 |