Materials Today
Volume 18, Issue 7, September 2015, Pages 365-377
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Research
Review
AIE luminogens: emission brightened by aggregation

https://doi.org/10.1016/j.mattod.2015.03.004Get rights and content
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Luminogens with the feature of aggregation-induced emission (AIE) are a class of ‘heterodox’ molecules, whose emissions are brightened by aggregate formation. The restriction of their intramolecular motions in an aggregate state is the main cause of the AIE process. In this account, we summarize recent progress in exploring high-tech applications of AIE luminogens (AIEgens) as biological sensors, chemical probes, optoelectronic devices, and intelligent materials. Our discussion is focused on mechanistic analysis, classifying the electronic interactions involved into three categories: (a) through-bond, (b) through-space, and (c) through-bond and -space conjugations. Such a mechanistic understanding will help guide further development of new AIEgens and their applications.

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These authors contributed equally to this work.