Amino-substituted-1,1-dicyano-2,4-diaryl-1,3-butadiene chromophores: Synthesis and photophysical properties


Yahya M., SEFEROĞLU N., Barsella A., Achelle S., SEFEROĞLU Z.

Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy, vol.248, 2021 (Peer-Reviewed Journal) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 248
  • Publication Date: 2021
  • Doi Number: 10.1016/j.saa.2020.119178
  • Journal Name: Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy
  • Journal Indexes: Science Citation Index Expanded, Scopus, Academic Search Premier, BIOSIS, CAB Abstracts, Chemical Abstracts Core, Chimica, Compendex, EMBASE, INSPEC, MEDLINE, Veterinary Science Database
  • Keywords: Allylidenemalononitrile, NIR emission, Push-pull, Triphenylamine, Intramolecular charge transfer (ICT), DFT calculations, NONLINEAR-OPTICAL-MATERIALS, LIGHT, DYES, HYPERPOLARIZABILITIES, FLUORESCENCE, ELECTRONICS

Abstract

© 2020 Elsevier B.V.A series of D-π-A chromophores based on allylidenemalononitrile electron-withdrawing group was designed. The influence of the amino-electron-donating group on the photophysical properties was studied. These compounds, highly thermally stable, exhibit orange-red emission in solution and in solid state. The experimental results have been rationalized by theoretical DFT calculations. The second order nonlinear optical properties were also studied using the electric field induced second harmonic generation (EFISH) method.