Fluorescence quenching of meso-substituted anthracenes by electron acceptors E.M. Ebeid, M. Gaber, A.M. Habib, R.M. Issa and S.A. El-Azim J. Chim. Phys., 86 (1989) 2015-2022 Published online: 29 May 2017 DOI: 10.1051/jcp/1989862015