A simple pyrene-based triazole receptor has been synthesised and shown to self-assemble in the presence of ZnCl2 in an exclusively 2:1 ratio, whereas a mixture of 2:1 and 1:1 ratios are observed for other Zn2+ salts. The pyrene units are syn in orientation, this is supported by a strong excimer signal observed at 410 nm in the presence of ZnCl2 in acetonitrile. DFT calculations and 2D NMR support the proposed structure.
Bibliographical note© The Royal Society of Chemistry, 2011
Manandhar, E., Broome, H. J., Myrick, J., Lagrone, W., Cragg, P., & Wallace, K. J. (2011). A pyrene based fluorescent sensor for Zn2+ ions: a molecular ‘butterfly’. Chemical Communications, 47(31), 8796-8798. https://doi.org/10.1039/c1cc13286e