Role of structural factors in the nonlinear optical properties of phthalocyanines and related compounds

Nonlinear optics (NLO) have been drawing interest for a few decades because of their importance in the domains of photoelectronics and photonics. This review covers the important advances obtained to date in the field of the NLO properties phthalocyanines and analogues. Whereas for 1D systems such as polyenes the correlation between structure and NLO response is relatively well developed, much progress is recently being achieved for 2D systems such as Pcs and porphyrins. Such questions as the role of molecular symmetry and multipolar character, metal complexation, peripheral and axial substitution, and core modification are clarified..