From Molecular Motion to Macroscopic Function: Tailoring Tetraarylethylene Supramolecular Architectures for Aggregation‐Induced Emission and Wave Absorption

ABSTRACT Integrating light emission and electromagnetic wave (EMW) absorption into a single material opens up possibilities for multienvironmental applications. Herein, we propose a novel “molecular engineering‐pyrolysis conversion” strategy to construct a bifunctional system with tunable photoluminescence and efficient EMW absorption performance. A custom‐designed aggregation‐induced emission (AIE)‐active architecture ([TAE‐IP‐2Q + Zn 2+ ]) was used as a single‐source precursor and converted via controlled pyrolysis into a TAE‐ZnS/NC architecture composed of uniformly embedded N‐doped carbon nanosheets coupled with ZnS nanoparticles. The precursor exhibits exceptional optical properties, including a Zn 2+ coordination‐induced red shift, extended fluorescence lifetime, and distinct AIE behavior. Notably, through controlled thermal treatment, the derived TAE‐ZnS/NC architecture enables enhanced interface polarization and optimized impedance matching, resulting in excellent low‐medium‐frequency EMW absorption performance, achieving a minimum reflection loss ( R L ) of −51.86 dB at a low frequency of 6 GHz and a broad effective absorption bandwidth (EAB) of 4.24 GHz. This work establishes a bridge between molecular‐scale photophysics and macroscopic electromagnetic dissipation, going beyond the traditional single‐function material design and offering a new paradigm for developing next‐generation intelligent materials with integrated sensing and electromagnetic functions.