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Issue 29, 2009

Aggregation-induced emission: phenomenon, mechanism and applications

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Abstract

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

Article information


Submitted
06 Mar 2009
Accepted
21 Apr 2009
First published
13 May 2009

Chem. Commun., 2009, 4332-4353
Article type
Feature Article

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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