Modulation of third-order nonlinear optical properties by backbone modification of polymeric pillared-layer heterometallic clusters

A study was conducted to demonstrate the synthesis of three structurally interesting polymeric heterothiometallic clusters with 3D pillar-layer- alternating honeycomb structure. The study observed that the connecting pillar ligands can modulate the NLO behavior of cluster polymers by π-electron delocalization. The study also used a density functional theory (DFT) calculations to determine the influence of bridging ligands on the electronic structure. It was observed during the study that the one-pot self-assembly can avoid the incorporation of terminal halogen atoms or large counter-ions. An infinite 3D honeycomb framework can be observed during crystallographic analysis. The UV-vis spectra also revealed that a low linear absorption took place in the visible and near-IR region.