Synthesis, nonlinear optical properties, photophysical, and theoretical studies of azo dye bearing coumarin-thiophene

Yahya M., SEFEROĞLU N., Kaplan G., Nural Y., Barsella A., SEFEROĞLU Z.

Journal of Molecular Structure, vol.1273, 2023 (SCI-Expanded) identifier

  • Publication Type: Article / Article
  • Volume: 1273
  • Publication Date: 2023
  • Doi Number: 10.1016/j.molstruc.2022.134257
  • Journal Name: Journal of Molecular Structure
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Chemical Abstracts Core, INSPEC
  • Keywords: Acidochromic, Azo dye, Coumarin-thiophene, DFT calculations, OH− sensor, Reusability
  • Gazi University Affiliated: Yes


© 2022In this study, three azo dyes bearing coumarin thiophene (6a-c) were synthesized, and their photophysical properties were studied via UV–vis spectroscopy in various solvents. Acidochromic properties were also investigated in DMSO/H2O, and all products showed acidochromic properties. The reversibility studies were carried out to investigate the reusability of the prepared compounds. Furthermore, products 6a-c were also investigated for their potential use as hydroxide sensors. The electric field-induced second harmonic generation (EFISH) technique was used to measure the second-order nonlinear optical properties. The thermal properties of the prepared compounds were investigated via thermogravimetric analysis (TGA). The results showed that the samples are thermally stable up to around 200 °C. The protonation of the compounds and their nonlinear optical (NLO) properties were investigated in the framework of Density Functional Theory (DFT) calculations.