7-(okso)-3-(2-kloro-4-florofenil) kumarin sübstitüentleri içeren metalli ve metalsiz ftalosiyanin bileşiklerinin sentezi ve karakterizasyonu Synthesis, characterization and examinations of electrochemical properties of metollo and metal free phthalocyanines with 7-oxo-3-(2-chloro-4-fluorophenyl)coumarin derivatives