Front Cover: Effective Photosensitization in Excited‐State Equilibrium: Brilliant Luminescence of Tb^III Coordination Polymers Through Ancillary Ligand Modifications (ChemPlusChem 10/2022)

Abstract

The cover picture shows a photosensitizer that has a long excited‐state lifetime and provides strong emissions for TbIII coordination polymers. The coordination polymers are composed of TbIII ions (emission center), hexafluoroacetylacetonato (photosensitizer ligands), and phosphine oxide‐based bridges (ancillary ligands). The photosensitizer with a long excited‐triplet‐state lifetime (τ≥1120 μs) controls the excited state equilibrium between the photosensitizer and TbIII, allowing the construction of TbIII coordination polymer with high TbIII emission quantum yield. More information can be found in the Research Article by Y. Kitagawa, Y. Hasegawa, and co‐workers.