Substituent Effect on the Chemiluminescence Quantum Efficiency of Some Acridan Derivatives

Article abstract of DOI:10.1007/BF00809369

Eight 9-benzylidene-N-methylacridan derivatives were synthesized and their chemiluminescence quantum yields on recation with NAOCl-H2O2 or O3 in N,N-dimethylformamide were plotted versus Hammett's "?" values.A good linear fit was obtained, the higher quantum yields being associated with negative "?" values.Two acridans did not fit in the plot and a novel treatment of chemiluminescence quenching is outlined to account for the discrepancy. - Keywords: Acridans; Chemiluminescence; Hammett; Quenching