摘要:
The present invention provides a novel alizarin derivative compound and a simplified and low cost method for preparing an alizarin derivative compound including: obtaining a compound represented by Formula (2) using a compound represented by Formula (3); and obtaining an alizarin derivative compound represented by Formula (1) using the compound represented by Formula (2); in Formulae (1) to (3), R1 represents a hydrogen atom or a substituent; n represents an integer of 1 to 3, L represents a specific alkyl group; Q represents an atomic group needed to form an aromatic ring or a heteroaromatic ring with adjacent carbon atoms; and P represents an atomic group which includes an atom(s) selected from a hydrogen atom, a carbon atom, an oxygen atom, a sulfur atom, a silicon atom and a boron atom, and which is needed to form a ring structure group with adjacent two oxygen atoms and two carbon atoms;
摘要:
An organic electroluminescent device, which has a pair of electrodes and at least one organic layer including a luminescent layer between the pair of electrodes, wherein at least one layer between the pair of electrodes comprises at least one metal complex having a tridentate- or higher polydentate-chain structure ligand.
摘要:
This invention provides an optical information recording medium (10A) that can record information by laser beam (38) irradiation. The optical information recording medium (10A) comprises a visible information recording layer (24) on which visible information is to be recorded. The visible information recording layer (24) contains a coloring matter, and at least one metal atom selected from the group consisting of Na, Mg, K, and Ca. The coloring matter is at least one material selected from the group consisting of oxonol coloring matter, cyanine coloring matter, azo coloring matter, phthalocyanine coloring matter, and pyrromethene coloring matter.
摘要:
A near-infrared absorptive liquid dispersion, which contains a near-infrared absorptive compound represented by formula (1) that is dispersed in a form of fine particles in a dispersing medium: wherein R 1a and R 1b may be the same or different, and each independently represent an alkyl group, an aryl group, or a heteroaryl group; R 2 and R 3 each independently represent a hydrogen atom or a substituent, and at least one of R 2 and R 3 is an electron withdrawing group; R 2 may be bonded to R 3 to form a ring; and R 4 represents a hydrogen atom, an alkyl group, an aryl group, a heteroaryl group, a substituted boron, or a metal atom, and R 4 may be covalently bonded or coordinately bonded to at least one among R 1a , R 1b and R 3 .
摘要:
An organic electroluminescent device comprising: a pair of electrodes; and at least one organic layer between the pair of electrodes, the at least one organic layer between the pair of electrodes, the at least one organic layer including a luminescent layer, wherein the luminescent layer contains at least one electron injection/transport compound, at least one hole injection/transport compound, and at least one green or blue phosphorescent compound; and the electron injection/transport compound and the hole injection/transport compound each has a minimum triplet exciton energy value which is equal to or more than that of the green or blue phosphorescent compound.
摘要:
A luminescent element characterized by comprising a substrate, a pair of electrodes formed thereover, at least one luminescent layer which is disposed between the electrodes and comprises a luminescent material represented by the following general formula (I) and a host material, and an organic film which is disposed between the luminescent layer and the cathode so as to be in contact with the luminescent layer and has an ionization potential higher than that of the host material. (I) In the formula, R to R each represents hydrogen or a substituent; X represents oxygen, sulfur, or N-RY1 (wherein RY1 represents hydrogen or a substituent); L represents a connecting group comprising a conjugated bond; and R and R each represents hydrogen or a substituent, provided that at least one of R and R represents an electron-attracting group. The compound represented by the general formula (I) may be in the form of a metal complex.