Journal
TETRAHEDRON LETTERS
Volume 52, Issue 19, Pages 2519-2522Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tetlet.2011.03.029
Keywords
Tetraarylethylene; Aggregation-induced emission; Fluorescence; Solid state
Categories
Funding
- College of Liberal Arts & Sciences
- Obermann Center for Advanced Studies
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Two tetrapyridyl-substituted tetraphenylethylenes have been prepared via Suzuki coupling between tetrabromo tetraphenylethylene and 3- or 4-pyridine boronic acid. Both compounds exhibit aggregation-induced emission as determined by solid state fluorescence spectroscopy and solution phase fluorescence measurements performed in aqueous/organic solvent mixtures. Solution phase fluorescence was also found to be switchable as a function of pH. 3-Pyridyl-substituted tetraphenylethylene has been structurally characterized by X-ray crystallography.
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