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dc.contributor.authorGülmez, Asuman Dakoğlu
dc.contributor.authorPolyakov, Maxim S.
dc.contributor.authorVolchek, Victoria V.
dc.contributor.authorKostakoğlu, Sinem Tuncel
dc.contributor.authorEsenpınar, Aliye Aslı
dc.contributor.authorBasova, Tamara V.
dc.contributor.authorHassan, Aseel K.
dc.description.abstractCopper phthalocyanines (CuPc) containing alkylthio (-S(CH2)(n)CH3, n = 7 and 15), alkyloxy- (-O(CH2)(n)CH3, n = 7 and 15) and polyoxo [-O(CH2CH2O)(3)CH3 and S(CH2CH2O)(3)CH3] substituents were synthesized and investigated to reveal the effects of substituents type (alkylthio, alkyloxy and polyoxo) and the type of the connecting heteroatom (oxygen or sulphur) on the mesogenic properties, films alignment and sensing behaviour. The liquid crystalline properties of these phthalocyanines were investigated by differential scanning calorimetry, polarizing optical microscopy and X-ray diffraction techniques. The structure and morphology of spun thin films of copper phthalocyanine derivatives were studied by the UV-vis and Raman spectroscopies as well atomic force microscopy. The sensing properties of CuPc films were studied by the measurement of conductivity change upon interaction with ammonia in the range 10-50 ppm. All investigated films of CuPc derivatives display thermotropic columnar mesomorphism. It was shown that the films with polyoxo- [-O(CH2CH2O)(3)CH3 and S(CH2CH2O)(3)CH3]substituents as well as with alkylthio -S(CH2)(n) CH3 (n = 7) substituents, which are liquid crystalline at room temperature, form ordered films with a random planar alignment of columns. Their films exhibit the better sensor performance with the maximal sensor response for the films of CuPc containing (-S(CH2CH2O)(3)CH3) substituents. (C) 2016 Elsevier B.V. All rights reserved.en_US
dc.description.sponsorshipScientific and Technological Research Council of Turkey (TUBITAK)Turkiye Bilimsel ve Teknolojik Arastirma Kurumu (TUBITAK) [108M384]; Russian Science FoundationRussian Science Foundation (RSF) [N 15-13-10014]; Russian Science FoundationRussian Science Foundation (RSF) [15-13-10014] Funding Source: Russian Science Foundationen_US
dc.description.sponsorshipSynthesis of metal phthalocyanine derivatives was carried out under the financial support of the Scientific and Technological Research Council of Turkey (TUBITAK, Project number: 108M384). Development of the technique for investigation of the sensor properties of the films was carried out under the financial support of the Russian Science Foundation (project N 15-13-10014).en_US
dc.publisherElsevier Science Saen_US
dc.relation.ispartofSensors and Actuators B-Chemicalen_US
dc.subjectCopper phthalocyaninesen_US
dc.subjectChemical sensorsen_US
dc.subjectAmmonia sensorsen_US
dc.subjectLiquid crystalsen_US
dc.subjectFilm alignmenten_US
dc.titleTetrasubstituted copper phthalocyanines: Correlation between liquid crystalline properties, films alignment and sensing propertiesen_US
dc.authoridGurek, Ayse Gul/0000-0002-8565-2424
dc.authoridPolyakov, Maxim Sergeevich/0000-0002-5053-4997
dc.authoridBasova, Tamara/0000-0003-4001-8371
dc.authoridVolchek, Victoria V/0000-0003-1693-2323
dc.authoridBanimuslem, Hikmat Adnan/0000-0002-6512-7251
dc.departmentFakülteler, Fen-Edebiyat Fakültesi, Kimya Bölümü
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.authorwosidGurek, Ayse Gul/AAG-5919-2019
dc.authorwosidDurmus, Mahmut/AAG-3377-2019
dc.authorwosidPolyakov, Maxim Sergeevich/O-3708-2017
dc.authorwosidBasova, Tamara/T-5149-2017
dc.authorwosidVolchek, Victoria V/C-7282-2018
dc.authorwosidBanimuslem, Hikmat Adnan/U-2916-2017

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