Tetrapyridyl tetraphenylethylenes: supramolecular building blocks with aggregation-induced emission properties |
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| Authors: | Pradeep P KapadiaJohn C Widen Mackenzie A MagnusDale C Swenson F Christopher Pigge |
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| Institution: | Department of Chemistry, University of Iowa, Iowa City, IA 52242, USA |
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| Abstract: | 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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| Keywords: | Tetraarylethylene Aggregation-induced emission Fluorescence Solid state |
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