Two-Dimensional Metal-Polyphthalocyanine Conjugated Porous Frameworks as Promising Optical Limiting Materials
Tingfeng Wang, Wenbo Huang, Tao Sun, Wenxiang Zhang, Wei Tang, Lihe Yan, Jinhai Si, Heping Ma
Abstract
Two-dimensional transition-metal-containing polyphthalocyanine conjugated porous frameworks are synthesized, and transition-metal (TM) ions ranging from Fe, Co, Ni, Cu to In are chosen to combine in phthalocyanine centers to tune their delocalized electronic structure. The fully closed planar delocalized π-conjugated frameworks exhibit efficient nonlinear optical absorption and excellent optical limiting performance under ns pulsed laser. The metal ion (Co, Ni) with ferromagnetism in phthalocyanine center manifests its contribution in enhanced nonlinear optical response through resonance enhancement of the nonlinear excited-state absorption.
Topics & Concepts
Delocalized electronMaterials sciencePhthalocyanineConjugated systemAbsorption (acoustics)Excited stateIonOptoelectronicsPhotochemistryChemical physicsNanotechnologyPolymerAtomic physicsOrganic chemistryComposite materialPhysicsChemistryPorphyrin and Phthalocyanine ChemistryNonlinear Optical Materials StudiesLuminescence and Fluorescent Materials