Color-tunable light-emitting materials, especially in their aggregate state , are of increasing interest due to their potential in various applications including fluorescent sensing and imaging , multicolor displays , information encryption and data storage . Within the family of multicolor emissive materials, polymers offer highly flexible structural design and outstanding processability . Numerous efforts have been devoted to the development of color-tunable fluorescent polymers, typically by covalently linking multiple fluorophores to a polymer backbone .