Triazine-based new macromolecules: Synthesis, characterization and properties

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Tezin Türü: Doktora

Tezin Yürütüldüğü Kurum: Yıldız Teknik Üniversitesi, Fen Bilimleri Enstitüsü, Kimya, Türkiye

Tezin Onay Tarihi: 2019

Tezin Dili: İngilizce

Öğrenci: MOHAMMED HADI ALI ALJUMAILI

Danışman: Lokman Torun

Özet:

This thesis entitled “Triazine-Based New Macromolecules: Synthesis, Characterization, and Properties" presents the synthesis and characterization of four series of compounds. The synthesis protocols were carried out starting from cyanuric chloride as the starting material. Cyanuric chloride has a wide application in chemical industries, agriculture, polymer, dye and leather and it is commercially cheap. In this study (2-chloro-4,6-bis((2-ethylhexyl)oxy)-1,3,5-triazine)  and 2-chloro-4,6-bis((3,7-dimethyloct-6-en-1-yl)oxy)-1,3,5-triazine were used as intermediate compounds which were prepared from  2,4,6-trichloro-1,3,5-triazine and used further in substitution reactions. Triazine derivatives were successfully designed and synthesized. The synthesized compounds were characterized by differential scanning calorimetry (DSC), polarizing optical microscopy (POM) and confirmed by ¹H NMR, ¹³C NMR mass spectra, and FT-IR.

Equimolar mixtures of all synthesized compounds with the complementary 4-dodecyloxybenzoic acid, which already possessed liquid crystal property, resulted in the organic salts. The organic salts were confirmed by spectroscopic methods (¹H NMR, ¹³C NMR FT-IR and Mass spectrometry), and investigated for their phase transition changes by differential scanning calorimetry (DSC) and polarized optical microscope (POM).

Keywords: Triazine, liquid crystals, hydrogen bonding, synthesis and characterizations