1. Department of Chemistry, Faculty of Arts and Sciences; Middle East Technical University; Ankara 06800 Turkey
2. Graduate Department of Polymer Science and Technology; Middle East Technical University; Ankara 06800 Turkey
3. BIOMATEN-Center of Excellence in Biomaterials and Tissue Engineering; Middle East Technical University; Ankara 06800 Turkey
4. Graduate Department of Biotechnology; Middle East Technical University; Ankara 06800 Turkey