Coupling Principles in Organic Dyes†
Dr. S. Dähne
Institut für Optik und Spektroskopie der Deutschen Akademie der Wissenschaften zu Berlin (Germany)
Search for more papers by this authorDr. D. Leupold
Institut für Optik und Spektroskopie der Deutschen Akademie der Wissenschaften zu Berlin (Germany)
Search for more papers by this authorDr. S. Dähne
Institut für Optik und Spektroskopie der Deutschen Akademie der Wissenschaften zu Berlin (Germany)
Search for more papers by this authorDr. D. Leupold
Institut für Optik und Spektroskopie der Deutschen Akademie der Wissenschaften zu Berlin (Germany)
Search for more papers by this authorSecond communication on general relationships between color and structure in organic compounds. 1st communication: [2a]; 3rd communication: [2b].
Abstract
Dye molecules containing two or more polymethine structural units, or at least one polymethine and one polyene structural unit, generally exhibit coupling effects that determine the spectroscopic behavior and other physicochemical properties of the substance. The coupling concept can be used inter alia to fit the quinone dyestuffs, the indigoids, and the indanthrenes into a general poymethine color system and to perdict new dye structures.
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