Abstract: Diarylamino arylvinyl naphthalene compounds, particularly used in blue-light organic light-emitting diodes with highly pure color, have the following representative formula: wherein Ar1, Ar2, Ar3 and Ar4 are identical or different substituents selected from the group consisting of phenyl, biphenyl, 1-naphthyl, 2-naphthyl, fluorophenyl, fluorobiphenyl, 1-fluoronaphthyl, 2-fluoronaphthyl, phenyl substituted by methyl or ethyl or isopropyl or tert-butyl or methoxy or ethoxy_, 1-naphthyl substituted by methyl or ethyl or isopropyl or tert-butyl or methoxy or ethoxy, 2-naphthyl substituted by methyl or ethyl, fluorophenyl substituted by methyl or isopropyl or tert-butyl or methoxy or ethoxy; wherein “Ar5” is one of the following substitutive groups consisting of: wherein the R1 to R14 are identical or different and are hydrogen,

Abstract: Organic light emitting compounds, particularly used for highly efficient blue-light electroluminescent (EL) devices, have the following representative formula: wherein i is an integer 1 or 2 and Ar1 is an aryl group of 6 to 20 carbon atoms.

Abstract: A method for synthesizing chiral bicyclic thiazolidine hydantoin that uses L-(+)-Cysteine, an aldehyde, and a preferred benzylisocyanate as reactants with additive solid molecular sieves to efficiently synthesize chiral bicyclic thiazolidine hydantoin crystallization having high purity. This method can be operated within only a singular reacting chamber without isolating intermediates in this method. Thereby, operational procedures of the present invention are simplified to make the method economic.