High refractive index of transparent acrylate polymers functionalized with alkyl sulfur groups

Sulfur-containing acrylic monomers were developed for high refractive index. The index of polymer films increased with the number of sulfur atoms in the monomer structure. Trisulfur-acrylic polymer provided refractive indices of more than 1.72 at visible light. Dipolar phenyl structure significantly increased the refractive index of acrylic polymers. Wavelength dispersion of the refractive index was investigated with Abbe's number of ca. 30 for all polymer films, except for the dipolar polymer viewing Abbe's number of ∼41.