Microwave Assisted Synthesis of Furan/Triazole Substituted Cobalt(II) phthalocyanine and investigation of electrochromic properties

Akyuz D., AKÇAY H. T., Bektas Y. S., MENTEŞE E.

DYES AND PIGMENTS, vol.249, 2026 (SCI-Expanded, Scopus) identifier

  • Publication Type: Article / Article
  • Volume: 249
  • Publication Date: 2026
  • Doi Number: 10.1016/j.dyepig.2026.113580
  • Journal Name: DYES AND PIGMENTS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Chemical Abstracts Core, Chimica, Compendex, INSPEC
  • Recep Tayyip Erdoğan University Affiliated: Yes

Abstract

In this study, tetra 4-(4-fluorophenyl)-5-(furan-2-yl)-4H-1,2,4-triazole-3-thio substituted Co(II) phthalocyanine was synthesized from novel, 4-((4-(4-fluorophenyl)-5-(furan-2-yl)-4H-1,2,4-triazol-3-yl)thio)phthalonitrile, compound by microwave irradiation. The novel compounds were characterized by FT-IR, 1H NMR, 13C NMR, mass spectrometric and elemental analysis methods. The electrochemical and in-situ spectroelectrochemical properties of CoPc are determined. During the reduction process, one quasi reversible metal-based and one reversible phthalocyanine-based redox couple were observed. 4-(4-fluorophenyl)-5-(furan-2-yl)-4H-1,2,4-tri-azole-3-thio-substituent included CoPc electropolymerized on indium tin oxide (ITO) glass electrode. Electrochromic performance of Poly(CoPc) film was recorded with in-situ spectroelectrochemical measurements. The effect on optical contrast thickness of film, solvent and supporting electrolyte was investigated. The color of Poly (CoPc) film changed from green to brown color at 1.40 V and optical contrast was recorded as 34 % at 690 nm in DCM/TBAPF6 electrolyte. In addition, coloring/bleaching time was recorded as about 10 s.