Akademik Veri Yönetim Sistemi
Tezin Türü: Doktora
Tezin Yürütüldüğü Kurum: Orta Doğu Teknik Üniversitesi, Fen Edebiyat Fakültesi, Kimya Bölümü, Türkiye
Tezin Onay Tarihi: 2004
Tezin Dili: İngilizce
Öğrenci: Atilla Cihaner
Danışman: AHMET MUHTAR ÖNAL
Özet:Poly(dibenzo-18-crown-6) (Poly(DB18C6)) was synthesized by electrochemical oxidation of dibenzo-18-crown-6 (DB18C6) using a mixture of acetonitrile and dichloromethane as solvent and tetrabutylammonium tetrafluoroborate (TBABF4) or tetrabutylammonium hexafluorophosphate (TBAPF6) as supporting electrolyte. The anodic polymerization of DB18C6 was investigated using in-situ ESR and in-situ UV-VIS spectroscopic techniques. Spectroelectrochemical (SPEL) properties and thermal analysis of the resulting polymers have been investigated using UV-VIS, Differential Scanning Calorimetry (DSC), and Thermogravimetric Analysis (TGA). Furthermore, new compounds consisting of bis(2-thienyl) methyl (I and II) and bis(2-thienyl) ethyl (III) units linked by polyether bridges have been synthesized and their electrochemical polymerization was performed via constant potential electrolysis (CPE) in an electrolytic solution containing 0.1 M TBAPF6 dissolved in CH3CN. Also, I and II were polymerized via chemical oxidation which yielded broken ?-conjugated polymers except for III. The polymers were characterized using 1H-NMR and FT-IR spectroscopic techniques. In addition, copolymers of III with thiophene (Th) and pyrrole (Py) were studied with cyclic voltammetry (CV). SPEL behaviors of the products were investigated using UV-VIS spectroscopic technique.