Abstract: A phthalocyanine compound of formula (I) is provided for use in a recording layer of an optical recording media. In formula (I), M1 is a divalent transition metal, or two hydrogen atoms; X is halogen; Y is —OR1; R1 is alkyl which is unsubstituted or substituted by halogen, halogen, hydroxyl, alkoxy, alkylamino; R2 is R3 and R4 independently denote H, halogen, alkyl and alkoxyl; R5 is unsubstituted or substituted phenyl, benzyl, nathalenyl, or heterocycle; E denotes a single bond, C1-C4 alkyl, R6—C—O—C(?O), R6—O—C(?O)— or R6—S—C(?O)—; R6 is unsubstituted or substituted phenyl, benzyl, nathalenyl, heterocycle or C1-C4 alkyl; x is a number from 0 to 8; y is a number from 0 to 8; z is a number from 0 to 4; and M2 is a divalent transition metal.

Abstract: A composition for use in a charge transport layer of an organic photo conductor is provided. The composition includes: (a) a mixture of N,N?-Bis(3-methylphenyl)-N,N?-diphenyl-benzidine (Compound I), 4-((N,N-diphenylamino)-4?-(N-(3-methylphenyl)-N-phenylamino)-biphenyl (Compound II) and N,N,N?,N?-tetraphenylbenzidine (Compound III); and (b) Compound IV of the formula (IV): where, R1 and R2 independently denote C1-C4-alkyl group or C1-C4-alkoxy group, and wherein the weight ratio of Compound IV to combined Compound I, Compound II and Compound III is in a range from 1/5 to 5.

Abstract: The present invention provides a blue laser light-absorbent substance, which is suitably used in organic photo conductor, laser optical data carrier or organic light-emitting diodes. The blue laser light-absorbent substance includes a merocyanine compound of the general formula (1) wherein n is an integer of from 0 to 3; R1 is unsubstituted or phenyl-, halogen-, ester-, siliy-substituted linear or branched alkyl group having 1 to 6 carbon atoms; R2 is unsubstituted or substituted phenyl, benzyl or naphthyl; N and R1R2 together represent aromatic-fused N-containing heterocyclic group (NR1R2); Y1 is unsubstituted or substituted alkoxy group having 1 to 8 carbon atoms; Y2 is cyano, nitro, halogen or carboxylate; or O and Y1Y2 together represent epoxy or N-containing heterocyclic hydrocarbonyl ketone (OY1Y2).