SYNTHESIS AND CHARACTERIZATION OF BIPOLAR HOST MATERIALS FOR ORGANIC PHOTONIC SYSTEMS
Tez Türü: Bütünleşik Doktora
Tezin Yürütüldüğü Kurum: Orta Doğu Teknik Üniversitesi, Odtü Kuzey Kıbrıs Kampusu (Kktc-Güzelyurt), Kimya Mühendisliği Bölümü, Türkiye
Tez Danışmanı: Canan Varlikli
Tezin Onay Tarihi: 2014
Tezin Dili: Türkçe
Desteklendiği Program: Diğer
Özet:
In this thesis, four p-type host materials and four bipolar host materials were synthesized. The structural characterisations of the synthesized molecules were carried out by FTIR, H-NMR ve C-NMR spectroscopies. In the p-type host materials, electon donating carbazole (D) groups and bulky tetraphenysilane groups were used together. As a result, hole conducting p-type host materials with high glass transition temperatures (Tg ≥ 120 °C) were obtained. Bipolar host materials are composed of electron donating carbazole and electron accepting (A) triazine groups. Tetraphenylsilane groups were attached between the donor and acceptor groups, and high tiplet energy (ET ≥ 2.9 eV) bipolar host molecules were obtained because of the interruption of the conjugation by the tetraphenylsilane groups.
Tert-butyl groups were attached to the 3,6 positions of the carbazoles to increase the solubility of the molecules, and as a result, host materials which are soluble in most of the organic solvents (chloroform, toluene, EtOAc, etc.) were obtained.
The photophysical properties of the synthesized molecules were studied by UV-Vis absorption and photoluminescence (PL) spectroscopies and electrochemical properties were studied by cyclic voltammetry (CV) measurements.