1-Pyrenesulfonic Acid (sodium salt)

1-Pyrenesulfonic acid is a fluorescent probe.1,2 It displays absorption/emission maxima of 346/376 nm, respectively.3 1-Pyrenesulfonic acid fluorescence can be quenched by ferric ions and the nitroaromatic compounds and explosive components 2,4-dinitrotoluene (2,4-DNT) and trinitrotoluene (TNT) in aqueous solutions.1,2 It has been used in study of reverse micelles, including intermicellar migration of reactants and in the estimation of the number of micelles per cluster.4 1-Pyrenesulfonic acid has also been used as a surfactant and dopant in the synthesis of polypyrrole micro- and nanowires.5

References
1. Jian, N., Lin, K., Guo, B., et al. A reusable fluorescent sensor from electrosynthesized water-soluble oligo(1-pyrenesulfonic acid) for effective detection of Fe3+. New J. Chem. 42(24), 19450-19457 (2018).
2. Kovalev, I.S., Taniya, O.S., Slovesnova, N.V., et al. Fluorescent detection of 2,4-DNT and 2,4,6-TNT in aqueous media by using simple water-soluble pyrene derivatives. Chem. Asian J. 11(5), 775-781 (2016).
4. Gehlen, M.H., De Schryver, F.C., Bhaskar Dutt, G., et al. Intermicellar mobility of probe and quencher in reverse micelles studied by fluorescence quenching. J. Phys. Chem. 99(39), 14407-14413 (1995).
5. Lu, G., Li, C., and Shi, G. Polypyrrole micro- and nanowires synthesized by electrochemical polymerization of pyrrole in the aqueous solutions of pyrenesulfonic acid. Polymer 47(6), 1778-1784 (2006).