Citation: Ya-Ru Qu, Kai-Li Tian, Han-Jun Huang, Jia-Jun Tu, Ai-Hao Chen, Hai-Jun Sun, Maxim V. Bermeshev, Shao-Jie Wang, Wen-Bin Li, Xiang-Kui Ren. Fluorescence enhancement of perylene diimide: Design strategy and application[J]. Chinese Journal of Structural Chemistry, ;2025, 44(12): 100756. doi: 10.1016/j.cjsc.2025.100756 shu

Fluorescence enhancement of perylene diimide: Design strategy and application

Perylene diimide (PDI) derivatives have emerged as a class of important organic fluorescent materials owing to their high extinction coefficient, excellent thermal and photostability, and versatile structural tunability. However, due to its intrinsic rigid planar structure, π-π stacking is easy to occur, resulting in aggregation-caused quenching (ACQ). In recent years, extensive efforts have been devoted to overcome this challenge and enhance the fluorescence performance of PDIs. This review systematically summarizes representative strategies from three major perspectives: (i) Rational molecular design, including the introduction of bulky aromatic substituents, dendritic or polyhedral oligomeric silsesquioxane (POSS) units to provide steric hindrance, as well as the activation of aggregation-induced emission (AIE); (ii) Polymer-based regulation strategies, including physical blending with polymer hosts and covalent integration into polymer backbones, which provide spatial isolation and structural robustness; and (iii) Supramolecular assembly, where host-guest inclusion and self-assembly pathways precisely tune intermolecular packing and excitonic coupling. These strategies have enabled significant improvements in fluorescence quantum yield (FLQY) across solution, aggregate, and solid states. Furthermore, highly emissive perylene diimide (PDI) derivatives have demonstrated broad applicability in biomedicine, sensing and anti-counterfeiting, and optoelectronic devices such as organic light-emitting diodes (OLEDs). This review highlights the fundamental design principles, performance optimization strategies, and emerging application frontiers of PDI-based luminescent materials, providing guidance for their further development toward multifunctional and sustainable optoelectronic technologies.
- Perylene diimide,
- High fluorescence,
- Aggregation-caused quenching,
- Molecular design,
- Polymer regulation,
- Supramolecular assembly
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