[1][2][3] This counterintuitive behavior contrasts with most organic compounds, which typically show reduced photoemission in the solid state due to processes like aggregation-caused quenching.
AIE is primarily attributed to restricted molecular motion in the aggregated state (decreased flexibility), which suppresses nonradiative energy dissipation and enhances fluorescence efficiency.
[4] The phenomenon in which organic luminophores show higher photoluminescence efficiency in the aggregated state than in solution is called aggregation-induced emission enhancement (AIEE).
[5][6] Luminophores such as noble metallic nanoclusters show higher photoluminescence efficiency in the aggregated state than homogenous dispersion in solution.
And polymers with property of aggregation-induced emission can also help to protect the healthy tissues from the harm of the medicines.