Hexaphenylbenzene-Based Deep Blue-Emissive Metallacages as Donors for Light-Harvesting Systems

摘要

We herein report the preparation of a series of hexaphenylbenzene(HPB)-based deep blue-emissive metallacages via multicomponent coordination-driven self-assembly.These metallacages feature prismatic structures with HPB derivatives as the faces and tetracarboxyhc ligands as the pillars,as evidenced by NMR,mass spectrometry and X-ray diffraction analysis.Light-harvesting systems were further constructed by employing the metallacages as the donor and a naph-thalimide derivative(NAP)as the acceptor,owing to their good spectral overlap.The judiciously chosen metallacage serves as the antenna,providing the suitable energy to excite the non-emissive NAP,and thus resulting in bright emission for NAP in the solid state.This study provides a type of HPB-based multicomponent emissive metallacage and explores their applications as energy donors to light up non-emissive fluoro-phores in the solid state,which will advance the development of emissive metallacages as useful luminescent materials.