Affiliation:
1. Institute of Advanced Materials and School of Chemistry and Chemical Engineering Southeast University Nanjing 211189 China
2. Instrumental Analytical Centre Shanghai Jiao Tong University Shanghai 201100 China
3. Materials Science Graduate Program Kent State University Kent, OH 44242 USA
Abstract
AbstractTo address key concerns on solid‐state pyrene‐based luminescent materials, we propose a novel and efficient mechanical bond strategy. This strategy results in a transformation from ACQ to AIE effect and a remarkable enhancement of pyrene emission in the solid state. Moreover, an unusual purification of emission is also achieved. Through computational calculation and experimental characterisation, finally determined by X‐ray diffraction analysis, we prove that the excellent emissions result from mechanical bond induced refinement of molecular arrangements, including reduced π‐π stacking, well‐ordered packing and enhanced structural stability. This work demonstrates the potential of mechanical bond in the field of organic luminescent molecules, providing a new avenue for developing high‐performance organic luminescent materials.