期刊
CHEMICAL SCIENCE
卷 3, 期 2, 页码 493-497出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c1sc00690h
关键词
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资金
- Research Grants Council of Hong Kong [HKUST2/CRF/10, 604711, 603509]
- University Grants Committee of Hong Kong [AoE/P-03/08]
- HKUST
- National Science Foundation of China [20974028]
In this work, we address a mechanistic issue on AIE process and correct a long-held misconception on stilbene photoluminescence. E-Z isomerisation 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-Z isomerisation 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-Z isomerisation is not involved in its AIE process under the normal photoluminescence spectral measurement conditions.
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