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Issue 29, 2009
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Aggregation-induced emission: phenomenon, mechanism and applications

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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.

Graphical abstract: Aggregation-induced emission: phenomenon, mechanism and applications

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The article was received on 06 Mar 2009, accepted on 21 Apr 2009 and first published on 13 May 2009

Article type: Feature Article
DOI: 10.1039/B904665H
Chem. Commun., 2009, 4332-4353

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    Aggregation-induced emission: phenomenon, mechanism and applications

    Y. Hong, J. W. Y. Lam and B. Z. Tang, Chem. Commun., 2009, 4332
    DOI: 10.1039/B904665H

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