Nonlinear optical properties of metal free and nickel binuclear phthalocyanines

This work employs the open and closed Z-scan aperture technique to comparatively study the nonlinear optical (NLO)properties of nickel and metal free 4-tert-butylphenoxy phthalocyanine, biphenyl bridged bis-4-tert-butylphenoxy phthalocyanine and naphthalene bridged bis-4-tert-butylphenoxy phthalocyanine. Density functional theory (DFT)calculations of dipolar and octupolar (ΦJ=1 and ΦJ=3)contribution were determined theoretically from hyper-Rayleigh scattering (HRS)response (βHRS)values.