Abstract: The present invention relates to a recording medium consisting of transparent substrate, recording layer, reflective layer, and protective layer, wherein the recording layer comprising at least one organic optical dye of structural formula (1): wherein each of R1, R2, R3, R4, R5, R6, X, and Y is defined as herein. The recording medium of present invention is useful as a write once recording medium, particularly is using as a recording medium for laser wavelength of 630 to 660 nm.

Abstract: An optical recording medium is disclosed, which is composed of a substrate, a recording layer comprising an organic dye upon which information can be recorded by a laser beam, a reflective layer and a protective layer formed in such order; whereas the aforementioned organic dye is a substituted phthalocyanine compound chemically bonded to substituted or un-substituted ferrocene via an anhydride group and a bridge unit G, wherein said G is selected from —O—, —S—, —S—(CH2)1-6—, —(NH)—, —N(alkyl)—, —(CH2)—, —CH(alkyl)—, —C(alkyl)2—, —(CH2—O)—, —C(?O)—, —C—O—C(?O)—, —O—C(?O)—, and —C(?O)—O—.

Abstract: A substituted oligofluorene for organic light-emitting diode (OLED) and organic photoconductor (OPC) has a chemical structure of: wherein X and Y are an integer of 0 or 1, G1 and G2 are independently of either CnH2n+1 or CnH2n+1O; and n is an integer of 0 to 16.