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dc.contributor.authorYabas, Ebru
dc.contributor.authorSulu, Mustafa
dc.contributor.authorDumludag, Fatih
dc.contributor.authorSalih, B.
dc.contributor.authorBekaroglu, Ozer
dc.date.accessioned2019-07-27T12:10:23Z
dc.date.accessioned2019-07-28T09:37:37Z
dc.date.available2019-07-27T12:10:23Z
dc.date.available2019-07-28T09:37:37Z
dc.date.issued2018
dc.identifier.issn0277-5387
dc.identifier.urihttps://dx.doi.org/10.1016/j.poly.2018.06.044
dc.identifier.urihttps://hdl.handle.net/20.500.12418/6130
dc.descriptionWOS: 000444358300005en_US
dc.description.abstractImidazole disubstituted phthalonitrile (1) was prepared by the reaction of 4,5-dichlorophthalonitrile with 4,5-diphenyl-1H-imidazolethiole. Imidazole octasubstituted metal free (2), zinc(II) (3), cobalt(II) (4) monophthalocyanines and lutetium(III) (5) and europium(III) (6) double-decker phthalocyanines were prepared by cyclotetramerization of compound 1. The new compounds were characterized by H-1 NMR, C-13 NMR, UV-vis, IR, MALDI-TOF mass, ESR spectra and elemental analysis. Dc and ac conductivity and gas sensing properties (at room temperature) of the compounds of 2-6 were studied between the temperatures of 295-523 K. Ac conductivity values of the films were measured in the frequency region of 40 Hz-100 kHz. The films were tested for the vapors of toluene, ethanol, THF, n-hexane, chloroform and xylene. DC conductivity results revealed that the compounds 2-6 show a semiconductor behavior. Results of ac measurements show dominant conduction mechanism can be modeled depending on temperature and frequency. The best sensitivity values were obtained for the xylene vapors. The sensor 3 showed best sensitivity among the other sensors for xylene vapor. Response times of the sensors were also determined. (C) 2018 Elsevier Ltd. All rights reserved.en_US
dc.description.sponsorshipScientific and Technical Research Council of Turkey (TUBITAK) [108 T140]; Scientific Research Council of Marmara University (BAPKO) the Commission of Scientific Research Projects [FEN-A-130711-0258]; Turkish Academy of Sciences (TUBA)en_US
dc.description.sponsorshipThe authors gratefully acknowledge the financial support by Scientific and Technical Research Council of Turkey (TUBITAK, Project No: 108 T140) and by The Scientific Research Council of Marmara University (BAPKO) the Commission of Scientific Research Projects (Project No: FEN-A-130711-0258) and partially supporting by Turkish Academy of Sciences (TUBA).en_US
dc.language.isoengen_US
dc.publisherPERGAMON-ELSEVIER SCIENCE LTDen_US
dc.relation.isversionof10.1016/j.poly.2018.06.044en_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectOctasubstituted phthalocyaninesen_US
dc.subjectImidazoleen_US
dc.subjectGas sensoren_US
dc.subjectConductivityen_US
dc.subjectVOCen_US
dc.titleImidazole octasubstituted novel mono and double-decker phthalocyanines: Synthesis, characterization, electrical and gas sensing propertiesen_US
dc.typearticleen_US
dc.relation.journalPOLYHEDRONen_US
dc.contributor.department[Yabas, Ebru] Cumhuriyet Univ, Adv Technol Res & Applicat Ctr, TR-58140 Sivas, Turkey -- [Sulu, Mustafa] Inonu Univ, Dept Chem, TR-44280 Malatya, Turkey -- [Dumludag, Fatih] Marmara Univ, Dept Phys, TR-34722 Istanbul, Turkey -- [Salih, B.] Hacettepe Univ, Dept Chem, TR-06800 Ankara, Turkey -- [Bekaroglu, Ozer] Tech Univ Istanbul, Dept Chem, TR-34469 Istanbul, Turkeyen_US
dc.contributor.authorIDBekaroglu, Ozer --- -- 0000-0002-9249-2385en_US
dc.identifier.volume153en_US
dc.identifier.endpage63en_US
dc.identifier.startpage51en_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US


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