The effect of the position of the trimethoxy groups as distant substituents on the spectral and acid sensing properties of phthalocyanines
POLYHEDRON, cilt.222, 2022 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 222
- Basım Tarihi: 2022
- Doi Numarası: 10.1016/j.poly.2022.115929
- Dergi Adı: POLYHEDRON
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Chemical Abstracts Core
- Anahtar Kelimeler: Acid sensing, Characterization, Distant substituents, Phthalocyanines, Synthesis, Trimethoxy, ASCORBIC-ACID
- Marmara Üniversitesi Adresli: Evet
Özet
In this study, alpha and beta substituted phthalonitrile derivatives were obtained by using 3,4,5-trimethoxyphenol and 2,4,6-trimethoxyphenol, and metal-free and Co2+ phthalocyanine molecules were synthesized using these starting compounds. After the phthalocyanine compounds were purified and characterized by classical methods, their detailed solubility, UV-Vis and FT-IR spectroscopy studies were performed and it was revealed how the positions of methoxy groups changed the spectroscopic properties of phthalocyanines. In addition, during detailed UV-Vis studies of Pcs, it was determined that alpha-substituted Pcs gave an extra peak in 1 x 10(-5) M dichloromethane solution. It was determined that this peak was caused by acid impurities in dichloromethane in trace amounts and UV-Vis spectra in DCM solutions with different trifluoroacetic acid(TFA) concentrations for alpha substituted Pcs (5-8) were studied and their protonation behaviour was examined. It was determined that H2Pc(6) was sensitive to acid even at 1.8 x 10(-3) mM concentration. Thus, acid sensor device can be developed by using this Pc molecule, if desired.