Synthesis and two-photon absorption property of novel salen complexes incorporated with two pendant azo dyes

The synthesis and properties of novel, functional azobenzene based metal complexes

“…Azo transitional metal complexes represent an interesting field of azobenzene chemistry [5,6], as they combine the optical, redox, and magnetic properties of the metal complex with the photoisomerization properties of the azo functional group. The azobenzene group as a ligand can form metal complexes with transitional metals, such as Pt and Pd [7,8], as a consequence of bonding between the azo group and the transition metal, azobenzene photoisomerization no longer occurs, a feature that limits the variety of azobenzene functionality.…”

Two-photon absorption and two-photon-induced isomerization of azobenzene compounds

“…[83][84][85] There are two ways of introducing the metal atoms into the azo molecules: (i) metal is coordinated by the nitrogen coming from the azo moiety, [83][84][85][86] (ii) metal is coordinated by another part of the azo derivatives excluding -N]Nbond. [87][88][89] Enhancement of the third-order nonlinearity in the rst case (i) can be related to intramolecular electron delocalization coming from charge transfer from metal to ligand (MLCT transition) or from ligand to metal (LMCT transition). 84 Up to date, a few complexes of azo derivatives with metals like Cu, 86 Co, 84 Ni 86 have been successfully synthesized and their NLO properties have been measured.…”

“…Mendonça et al synthesized a series of salen complexes possessing two azo dye units and examined them in the context of their NLO properties. [87][88][89] They found no differences in TPA cross-section between the ligand and its complex with metal. Moreover, NLO responses of the investigated compounds indicated an additive effect of Fig.…”

“…87 chromophores showing nondetrimental dipole-dipole interaction between the chromophores. 88 The values of the two-photon absorption cross section as well as the structures of the AB derivatives studied in that respect are presented in Table S1. †…”

Preparation and Characterization of New Ligand Azo-Schiff-2- Naphthol and Mixed Complexes With Ortho- Aminophenol and Ortho-Aminobenzoic Acid

“…Azo-azomethine ligands and their metal complexes have attracted considerable attention due to their impressive and useful chemical and physical properties [1][2][3][4]. Apart from their purely chemical interest, azo-azomethine ligands have also received special attention because of their mixed soft hard donor characters (O, N and S donor sites), versatile coordination behavior [5][6][7], pharmacological properties [8,9] and optical and thermal properties [2,10,11]. Transition metal complexes of azo-azomethine ligands have also attracted special interest because of their optical and absorption properties and also high thermal stability [12].…”