Coumarin-based benzilmonohydrazone as a new proton-sensitive fluorescence dye: synthesis and investigation of photophysical and acidochromic properties

AYDINER B.

TURKISH JOURNAL OF CHEMISTRY, vol.43, no.4, pp.1086-1097, 2019 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 43 Issue: 4
  • Publication Date: 2019
  • Doi Number: 10.3906/kim-1902-38
  • Journal Name: TURKISH JOURNAL OF CHEMISTRY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, TR DİZİN (ULAKBİM)
  • Page Numbers: pp.1086-1097
  • Gazi University Affiliated: Yes

Abstract

Coumarin-based chromogenic and fluorogenic dye 4 was designed and synthesized. The photophysical properties of 4 were determined in solvents with different polarities. Protonation affinity was determined by adding trifluoroacetic acid (TFA) to a dichloromethane solution of dye 4 utilizing the UV-Vis and fluorescence titration methods. The protonation region was investigated by using the H-1 NMR method. Additionally, DFT and TDDFT studies were performed to support the structural and absorption spectral properties of 4.