Deciphering mechanism of aggregation-induced emission (AIE): Is E–Zisomerisation involved in an AIE process?
- 20 October 2011
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Chemical Science
- Vol. 3 (2), 493-497
- https://doi.org/10.1039/c1sc00690h
Abstract
In this work, we address a mechanistic issue on AIE process and correct a long-held misconception on stilbene photoluminescence. E–Zisomerisation 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 E–Zisomerisation 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 E–Zisomerisation is not involved in its AIE process under the normal photoluminescence spectral measurement conditions.This publication has 46 references indexed in Scilit:
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