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Issue 2, 2012
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Deciphering mechanism of aggregation-induced emission (AIE): Is EZisomerisation involved in an AIE process?

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Abstract

In this work, we address a mechanistic issue on AIE process and correct a long-held misconception on stilbene photoluminescence. EZisomerisation has been generally recognized as the cause of emission quenching in stilbene solutions. A natural question arisen from this common belief is whether suppression of EZisomerisation by aggregate formation in a stilbenic fluorogen system is responsible for its AIE phenomenon. Monitoring of the structural change of a stilbene derivative named 1,2-diphenyl-1,2-di(p-tolyl)ethene by NMR during UV irradiation reveals that the EZisomerisation is not involved in its AIE process under the normal photoluminescence spectral measurement conditions.

Graphical abstract: Deciphering mechanism of aggregation-induced emission (AIE): Is E–Zisomerisation involved in an AIE process?

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Publication details

The article was received on 18 Sep 2011, accepted on 19 Oct 2011 and first published on 20 Oct 2011


Article type: Edge Article
DOI: 10.1039/C1SC00690H
Citation: Chem. Sci., 2012,3, 493-497
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    Deciphering mechanism of aggregation-induced emission (AIE): Is EZisomerisation involved in an AIE process?

    N. Tseng, J. Liu, J. C. Y. Ng, J. W. Y. Lam, H. H. Y. Sung, I. D. Williams and B. Z. Tang, Chem. Sci., 2012, 3, 493
    DOI: 10.1039/C1SC00690H

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