Journal
CHEMICAL COMMUNICATIONS
Volume -, Issue 29, Pages 4332-4353Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/b904665h
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Funding
- Research Grants Council of Hong Kong
- Ministry of Science and Technology of China
- National Science Foundation of China
- Cao Guangbiao Foundation of Zhejiang University
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It is textbook knowledge that chromophore aggregation generally quenches light emission. In this feature article, we give an account on how we observed an opposite phenomenon termed aggregation-induced emission (AIE) and identified the restriction of intramolecular rotation as a main cause for the AIE effect. Based on the mechanistic understanding, we developed a series of new fluorescent and phosphorescent AIE systems with emission colours covering the entire visible spectral region and luminescence quantum yields up to unity. We explored high-tech applications of the AIE luminogens as, for example, fluorescence sensors (for explosive, ion, pH, temperature, viscosity, pressure, etc.), biological probes (for protein, DNA, RNA, sugar, phospholipid, etc.), immunoassay markers, PAGE visualization agents, polarized light emitters, monitors for layer-by-layer assembly, reporters for micelle formation, multistimuli-responsive nanomaterials, and active layers in the fabrication of organic light-emitting diodes.
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