A Pyrene-Based Fluorescent Sensor for Zn2+ ions: A Molecular 'Butterfly'
Chemistry and Biochemistry
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.
Broome, J. H.,
Cragg, P. J.,
Wallace, K. J.
(2011). A Pyrene-Based Fluorescent Sensor for Zn2+ ions: A Molecular 'Butterfly'. Chemical Communications, 47(31), 8796-8798.
Available at: http://aquila.usm.edu/fac_pubs/8887