The new soluble tetra-substituted oxo-titanium phthalocyanines: Synthesis, characterization, spectral and colorimetric pH sensing properties

YABAŞ E.

Journal of Molecular Structure, cilt.1284, 2023 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 1284
  • Basım Tarihi: 2023
  • Doi Numarası: 10.1016/j.molstruc.2023.135435
  • Dergi Adı: Journal of Molecular Structure
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Chemical Abstracts Core, INSPEC
  • Anahtar Kelimeler: Phthalocyanine, Titanium, UV-Vis, pH sensor, Fluorescence, SEM
  • Sivas Cumhuriyet Üniversitesi Adresli: Evet

Özet

New imidazole tetrasubstituted oxo-titanium phthalocyanine 1 was synthesized by tetramerization reaction of imidazole substituted phthalonitrile in the presence of titanium(IV) butoxide. N-alkylated imidazole tetrasubstituted oxo-titanium phthalocyanine 2 was prepared by N-alkylation reaction of compound 1 with iodomethane in basic medium. Afterwards, as a result of the quaternization reaction of compound 2, water-soluble oxo-titanium phthalocyanine 3 was prepared. The synthesized compounds were characterized by UV-Vis, FT-IR, 1H-NMR, MALDI-TOF MS and elemental analysis. The spectral properties, surface morphologies in powder form and thin films, colorimetric pH sensing properties and aggregation behaviors of the synthesized compounds were investigated. We also used the UV-Vis spectroscopy technique to experimentally find the optical band gap of compound 1 with the best thin-film surface properties. In this context, transmittance, absorption and band gap energy of compound 1 thin film were investigated.