K. Papadopoulos, T. Triantis, D. Dimotikali
Feb 29, 2000
Citations
0
Influential Citations
7
Citations
Journal
Journal of Photochemistry and Photobiology A-chemistry
Abstract
Abstract Carboxyquinolines, specifically 2-carboxyquinoline (quinaldic acid), 4-carboxy-2-hydroxyquinoline (kynurenic acid), 2-carboxy-4-hydroxyquinoline, 4,4′-dicarboxy-2,2′-biquinoline and 2,2′-biquinoline-4,4′-dicarboxylic acid dipotassium salt in dialkylated amides are radiolyzed to novel 1,4-dihydroquinolines which emit light on addition of bases in the presence of oxygen giving rise to quinolinones. The overall quantum yields (radiolysis and chemiluminescence) are as high as 2.4×10 −5 einstein mol −1 . The radiolysis and chemiluminescence mechanisms are discussed. The radiochemiluminescence reactions constitute prospective radiation dosemeters and can be used for analytical applications.