Thieno[3,2-b]phosphole-based AIEgens: facile preparation and dual modulation of solid-state luminescence

Abstract

Thieno[3,2-b]phosphole-based AIEgens (Aggregation-Induced Emission Luminogens) have gained significant attention due to their unique solid-state emission properties. Here, we present a facile and efficient method for the preparation of thieno[3,2-b]phosphole-based AIEgens with dual tunability of solid-state emission. The synthesis involves the modification of the thiophene core with different substituents and changing the environment of the phosphorus atom, leading to a library of AIEgens with diverse photophysical properties. By controlling the molecular packing, intermolecular interactions and electronic structures, we successfully tuned the emission color and efficiency of the molecules in the solid state. The results demonstrate the remarkable dual tunability of the thieno[3,2-b]phosphole-based scaffold and the importance of a three-dimensional fluorophore design, making them promising candidates for advanced luminescent materials and devices.