dc.contributor.author | Yabas, Ebru | |
dc.contributor.author | Sulu, Mustafa | |
dc.contributor.author | Dumludag, Fatih | |
dc.contributor.author | Salih, B. | |
dc.contributor.author | Bekaroglu, Ozer | |
dc.date.accessioned | 2019-07-27T12:10:23Z | |
dc.date.accessioned | 2019-07-28T09:37:37Z | |
dc.date.available | 2019-07-27T12:10:23Z | |
dc.date.available | 2019-07-28T09:37:37Z | |
dc.date.issued | 2018 | |
dc.identifier.issn | 0277-5387 | |
dc.identifier.uri | https://dx.doi.org/10.1016/j.poly.2018.06.044 | |
dc.identifier.uri | https://hdl.handle.net/20.500.12418/6130 | |
dc.description | WOS: 000444358300005 | en_US |
dc.description.abstract | Imidazole 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.sponsorship | Scientific 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.sponsorship | The 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.iso | eng | en_US |
dc.publisher | PERGAMON-ELSEVIER SCIENCE LTD | en_US |
dc.relation.isversionof | 10.1016/j.poly.2018.06.044 | en_US |
dc.rights | info:eu-repo/semantics/closedAccess | en_US |
dc.subject | Octasubstituted phthalocyanines | en_US |
dc.subject | Imidazole | en_US |
dc.subject | Gas sensor | en_US |
dc.subject | Conductivity | en_US |
dc.subject | VOC | en_US |
dc.title | Imidazole octasubstituted novel mono and double-decker phthalocyanines: Synthesis, characterization, electrical and gas sensing properties | en_US |
dc.type | article | en_US |
dc.relation.journal | POLYHEDRON | en_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, Turkey | en_US |
dc.contributor.authorID | Bekaroglu, Ozer --- -- 0000-0002-9249-2385 | en_US |
dc.identifier.volume | 153 | en_US |
dc.identifier.endpage | 63 | en_US |
dc.identifier.startpage | 51 | en_US |
dc.relation.publicationcategory | Makale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı | en_US |