Birefringent crystals, critical for the polarization of light, play an important role in the optoelectronics field. Herein, by introducing d10 cations into the structures, a family of hydroisocyanurates, X2Y(H2C3N3O3)4·4H2O (X… Click to show full abstract
Birefringent crystals, critical for the polarization of light, play an important role in the optoelectronics field. Herein, by introducing d10 cations into the structures, a family of hydroisocyanurates, X2Y(H2C3N3O3)4·4H2O (X = K, Cs; Y = Zn, Cd) were obtained, which exhibit large birefringence (Δn > 0.25@800 nm) resulting from the π-conjugated (H2C3N3O3)− groups and possess high transmittance (>80%) in the ultraviolet region. In addition, the structure–property relationship was analyzed by first-principles calculations.
               
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