Organic fluorescent pigments

Abstract

Organic fluorescent pigments are classified into coloring materials and whiteners. The former is used to add chromatic fluorescent color to various materials. The latter, which normally emits blue fluorescence, is added to white-colored materials to compensate for the blue-region absorption caused by small amounts of yellowish-brown impurities in the materials. Both types of organic fluorescent pigments have a wide range of applications; but in this chapter, fluorescent coloring materials and their diverse uses are described focusing particularly on highly useful fluorescent pigments (properly called daylight fluorescent pigments).