LUMINESCENT MATERIALS INCLUDING A LUMINESCENT BENZOTHIAZOLE, ARTICLES INCLUDING A SECURITY FEATURE, AND METHODS OF FORMING LUMINESCENT PARTICLES INCLUDING A LUMINESCENT BENZOTHIAZOLE

摘要

Luminescent materials that include a luminescent phosphor compound, articles including a security feature, and methods for producing the luminescent phosphor compounds are provided herein. In an embodiment, a luminescent material includes a medium and luminescent particles. The luminescent particles include a luminescent benzothiazole having a ureido linkage. The luminescent benzothiazole has a peak intensity within a wavelength of from about 555 to about 630 nm in response to excitation with electromagnetic radiation at a wavelength of about 366 nm.