Spectral behavior and computational studies of fuchsin in various solvents

J. P. Graham, M. A. Rauf, S. Hisaindee, A. Alzamly

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

Absorption spectra of fuchsin were measured in various solvents. Two solvent-dependent absorption maxima were observed between 511 and 538 nm and 552–567 nm. Time-dependent density functional theoretical calculations assigned the transitions between the 510–540 nm and 540–557 nm to π-π* transitions between the HOMO-1 to LUMO and HOMO to LUMO respectively. The absorption data were analyzed using the Kamlet-Aboud-Taft, Catalan and Katritzky models of solvatochromic behavior. The Catalan model was found to provide the best correlation with the experimental absorption maxima, followed by the Katritzky model. Both the Catalan and Katritzky models suggest that polarizability of the solvent is the primary factor affecting the transition energy.

Original languageEnglish
Pages (from-to)193-197
Number of pages5
JournalJournal of Molecular Liquids
Volume238
DOIs
Publication statusPublished - Jul 1 2017

Keywords

  • DFT
  • Fuchsin
  • Multivariate analysis
  • Spectroscopy
  • UV/Vis

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Spectroscopy
  • Physical and Theoretical Chemistry
  • Materials Chemistry

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