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Effect of crystallinity on UV degradability of poly[methyl(phenyl)silane] by energy-resolved electrochemical impedance spectroscopy

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dc.title Effect of crystallinity on UV degradability of poly[methyl(phenyl)silane] by energy-resolved electrochemical impedance spectroscopy en
dc.contributor.author Schauer, František
dc.contributor.author Tkáč, Lukáš
dc.contributor.author Ožvoldová, Miroslava
dc.contributor.author Nádaždy, Vojtech
dc.contributor.author Gmucová, Katarína
dc.contributor.author Jergel, Matej
dc.contributor.author Šiffalovič, Peter
dc.relation.ispartof AIP Advances
dc.identifier.issn 2158-3226 Scopus Sources, Sherpa/RoMEO, JCR
dc.date.issued 2017
utb.relation.volume 7
utb.relation.issue 5
dc.type article
dc.language.iso en
dc.publisher American Institute of Physics (AIP)
dc.identifier.doi 10.1063/1.4983215
dc.relation.uri http://aip.scitation.org/doi/abs/10.1063/1.4983215
dc.description.abstract Low stability and degradability of polymers by ambient air, UV irradiation or charge transport are major problems of molecular electronics devices. Recent research tentatively suggests that the presence of a crystalline phase may increase polymer stability due to an intensive energy trapping in the ordered phase. Using the UV degradability, we demonstrate this effect on an archetypal model σ bonded polymer - poly[methyl(phenyl)silane] (PMPSi) - with partially crystalline and amorphous-like layers. UV degradation with 345 nm, derived from the branching state generation rate, was inversely proportional to the crystalline phase content, changing from 4.8x1011 s-1 (partially crystalline phase) to 1.8x1013 s-1 (amorphous-like phase). A model is proposed where crystallites formed by molecular packing act as effective excitation energy traps with a suppressed nonradiative recombination improving thus PMPSi film stability. The molecular packing and higher crystalline phase proportion may be a general approach for stability and degradability improvement of polymers in molecular electronics. © 2017 Author(s). en
utb.faculty Faculty of Applied Informatics
dc.identifier.uri http://hdl.handle.net/10563/1007360
utb.identifier.rivid RIV/70883521:28140/17:63517978!RIV18-GA0-28140___
utb.identifier.obdid 43877629
utb.identifier.obdid 43877811
utb.identifier.scopus 2-s2.0-85018759200
utb.identifier.wok 000402797100002
utb.source j-scopus
dc.date.accessioned 2017-09-08T12:14:45Z
dc.date.available 2017-09-08T12:14:45Z
dc.description.sponsorship 0096-11, APVV, Agentúra na Podporu Výskumu a Vývoja; 1/0501/15, VEGA, Vedecká Grantová Agentúra MŠVVaŠ SR a SAV; 2/0163/17, VEGA, Vedecká Grantová Agentúra MŠVVaŠ SR a SAV
dc.description.sponsorship Slovak Research and Development Agency [APVV-0096-11]; Scientific Grant Agency (VEGA) [1/0501/15, 2/0163/17]
utb.contributor.internalauthor Schauer, František
utb.fulltext.affiliation F. Schauer 1,2,a, L. Tkáč 2, M. Ožvoldová 2, V. Nadáždy 3, K. Gmucová 3, M. Jergel 3, P. Šiffalovič 3 1 Faculty of Applied Informatics, Tomas Bata University in Zlín, 760 05 Zlín, Czech Republic 2 Faculty of Education, Trnava University in Trnava, 918 43 Trnava, Slovak Republic 3 Institute of Physics, SAS, Dubravská cesta 9, 845 11 Bratislava, Slovak Republic
utb.fulltext.dates Received 5 February 2017 accepted 25 April 2017 published online 4 May 2017
utb.fulltext.faculty Faculty of Applied Informatics
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