多価アルデヒド類による定量法の研究(第10報) : フタルアルテヒドによるm-ヨードアニリンのりん光定量

概要

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Phosphorescence and fluorescence at 77°k were compared in 2-phenylphthalimidines having a substituent (OH, OCH_3,CH_3,H, Cl, Br, I, COOH, SO_2NH_2,NO_3,2', 3'-benz., 3', 4'-benz.) in the phenyl group at 2-position. Mean life time of the phosphorescence of 2-(m- or p-halogenophenyl) phthalimidines showed the internal heavy atom effect of the substituted atoms and the mean life time decreased in the order of chlorine, bromine, and iodine. The life time of p-halogen substituted compounds was smaller than that of m-halogen compounds. Based on these facts phosphorimetric determination of m-iodoaniline was devised which relied on the phosphorescence reaction by the formation of 2-phenylphthalimidines from phthaladehyde and aromatic primary amines in sulfuric acid-ethanol solution. This phosphorescence method was not interfered by ο-iodoaniline, p-iodoaniline, N-methylaniline, N, N-dimethylaniline, benzylamine, or urea, and its selectivity was better than that of fluorescence method.
公益社団法人日本薬学会の論文
1969-02-25