Third-order nonlinear optical properties of highly electron deficient, nonplanar push–pull porphyrins: β-nitro-hexa-substituted porphyrins bearing bromo, phenyl, and phenylethynyl groups

Abstract

β-Heptasubstituted porphyrins [MTPP(NO2)X6; M = 2H, Ni(II), Cu(II), and ZnII; X = Br, Ph, and PE] were synthesized and explored their third-order nonlinear optical (NLO) properties using single-beam Z-scan technique...