Electrical properties of nanocomposites based on comb-shaped nematic polymer and silver nanoparticles

Nikonorova, NA; Barmatov, EB; Pebalk, DA; Barmatova, MV; Dominguez-Espinosa, G; Diaz-Calleja, R; Pissis, P

dc.contributor.author	Nikonorova, NA	en
dc.contributor.author	Barmatov, EB	en
dc.contributor.author	Pebalk, DA	en
dc.contributor.author	Barmatova, MV	en
dc.contributor.author	Dominguez-Espinosa, G	en
dc.contributor.author	Diaz-Calleja, R	en
dc.contributor.author	Pissis, P	en
dc.date.accessioned	2014-03-01T01:26:17Z
dc.date.available	2014-03-01T01:26:17Z
dc.date.issued	2007	en
dc.identifier.issn	1932-7447	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/17981
dc.subject	Electrical Properties	en
dc.subject	Silver Nanoparticle	en
dc.subject.classification	Chemistry, Physical	en
dc.subject.classification	Nanoscience & Nanotechnology	en
dc.subject.classification	Materials Science, Multidisciplinary	en
dc.subject.other	Copolymers	en
dc.subject.other	Dielectric spectroscopy	en
dc.subject.other	Glass transition	en
dc.subject.other	Nematic liquid crystals	en
dc.subject.other	Permittivity	en
dc.subject.other	Conducting channels	en
dc.subject.other	Frequency dependence	en
dc.subject.other	Temperature frequency intervals	en
dc.subject.other	Nanocomposites	en
dc.title	Electrical properties of nanocomposites based on comb-shaped nematic polymer and silver nanoparticles	en
heal.type	journalArticle	en
heal.identifier.primary	10.1021/jp068688a	en
heal.identifier.secondary	http://dx.doi.org/10.1021/jp068688a	en
heal.language	English	en
heal.publicationDate	2007	en
heal.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). © 2007 American Chemical Society.	en
heal.publisher	AMER CHEMICAL SOC	en
heal.journalName	Journal of Physical Chemistry C	en
dc.identifier.doi	10.1021/jp068688a	en
dc.identifier.isi	ISI:000247215200010	en
dc.identifier.volume	111	en
dc.identifier.issue	24	en
dc.identifier.spage	8451	en
dc.identifier.epage	8458	en