Synthesis, spectral and third-order nonlinear optical properties of terpyridine Zn(II) complexes based on carbazole derivative with polyether group

Spectrochim Acta A Mol Biomol Spectrosc. 2015 Jan 25:135:521-8. doi: 10.1016/j.saa.2014.07.039. Epub 2014 Jul 27.

Abstract

Four novel Zn(II) terpyridine complexes (ZnLCl2, ZnLBr2, ZnLI2, ZnL(SCN)2) based on carbazole derivative group were designed, synthesized and fully characterized. Their photophysical properties including absorption and one-photon excited fluorescence, two-photon absorption (TPA) and optical power limiting (OPL) were further investigated systematically and interpreted on the basis of theoretical calculations (TD-DFT). The influences of different solvents on the absorption and One-Photon Excited Fluorescence (OPEF) spectral behavior, quantum yields and the lifetime of the chromophores have been investigated in detail. The third-order nonlinear optical (NLO) properties were investigated by open/closed aperture Z-scan measurements using femtosecond pulse laser in the range from 680 to 1080 nm. These results revealed that ZnLCl2 and ZnLBr2 exhibited strong two-photon absorption and ZnLCl2 showed superior optical power limiting property.

Keywords: Carbazole derivative; Optical power limiting; Photophysical properties; TD-DFT calculation; Terpyridine; Third-order nonlinear optical (NLO).

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Carbazoles / chemistry*
  • Coordination Complexes / chemical synthesis*
  • Coordination Complexes / chemistry
  • Ether / chemistry*
  • Ligands
  • Models, Molecular
  • Nonlinear Dynamics*
  • Optical Phenomena*
  • Photons
  • Quantum Theory
  • Solvents
  • Spectrometry, Fluorescence
  • Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization
  • Zinc / chemistry*

Substances

  • Carbazoles
  • Coordination Complexes
  • Ligands
  • Solvents
  • Ether
  • carbazole
  • Zinc