Peripherally octamethyl zinc(II) phthalocyanines with various axial substituents

The role of peripheral F-/H-atoms and tert-butyl substituents in charge transfer of axially substituted titanium phthalocyanines

A poor charge transfer (CT) characteristic between F16TiOPc and axial ligand C60 is observed due to the attraction of the C-F bonds to the electron cloud. In addition, the CT characteristic can be effectively improved by peripheral substitution of H-atoms or tetra-tert-butyl groups, and superior one-/two-photon absorption properties can also be achieved owing to the σ-π hyperconjugation effect in tetra-tert-butyl groups.

Quantum Chemical Stability Analysis of Phthalocyanine Metal One-Dimensional Polymers with Bidentate Ligands

The combination of metal-phthalocyanine complexes and axially coordinated organic molecules into polymer chains presents a significant challenge in the synthesis of hybrid materials. A calculated structure for one-dimensional coordinate polymers with N-donor ligands using ab initio (PM6) and DFT (LanL2Dz) methods is presented. DFT methods have shown that there is a linear, one-dimensional structure without distorted geometry for the two bipyridine ligands. The components of the proposed polymers consist of square-planar Zn complexes of phthalocyanine (PcZn) connected via bridging ligands (L). Electronic properties of the monomer PcZnL of zinc phthalocyanine with bidentate ligands have been analyzed using calculations based on density functional theory (B3LYP6-31G(d,p)). Molecular orbital calculations show that this connection between the metallomacrocycle and the conjugated ligand results in a small energy gap, promising molecularly active materials as conductors. The crystallographic reports indicate that obtaining this kind of polymer with the participation of Pc Zn and bidentate ligands is possible.