ORGANIC ELECTRONIC MATERIAL, INK COMPOSITION CONTAINING SAME, AND ORGANIC THIN FILM, ORGANIC ELECTRONIC ELEMENT, ORGANIC ELETROLUMINESCENT ELEMENT, LIGHTING DEVICE, AND DISPLAY DEVICE FORMED THEREWITH

摘要

Provided are: an organic electronic material which can be easily multilayered and that can be used in substrates, such as resin, that cannot be processed at high temperatures; an ink composition containing the same; an organic thin film formed using said organic electronic material or said ink composition; and an organic electronic element and an organic EL element that are formed using said organic thin film and that have a superior luminous efficacy and emission lifespan than conventional elements. Specifically, provided are: an organic electronic material that is characterized by containing an oligomer or a polymer having a structure that branches into three or more directions and has at least one polymerizable substituent; an ink composition containing said organic electronic material; and an organic thin film prepared using the aforementioned organic electronic material. Further, provided are an organic electronic element and an organic electroluminescent element containing said organic thin film.

主权项

1. An organic electroluminescent element formed by laminating at least a substrate, an anode, a hole injection layer, a light emitting layer and a cathode, wherein the hole injection layer is a layer formed from an organic thin film produced using an organic electronic material,
wherein the organic electronic material comprises a polymer or oligomer which (1) has at least one polymerizable substituent and (2) has a structure branching in three or more directions, in which when a chain of said structure branching in three or more direction, having the highest degree of polymerization among the various chains in one molecule of the polymer or oligomer, is designated as the main chain, side chains having an equal degree of polymerization or a lower degree of polymerization are linked to the main chain, wherein the polymer or oligomer contains at least any one of the structures of the following formulas (1) to (10) as a unit serving as the starting point for forming the branched structure: (wherein Ar's each independently represent a divalent linking group, each representing an arylene group or heteroarylene group having 2 to 30 carbon atoms; W represents a trivalent linking group, which is an atomic group obtained by further excluding one hydrogen atom from the arylene group or the heteroarylene group and may be substituted; Y's each independently represent a divalent linking group; and Z represents any one of a carbon atom, a silicon atom and a phosphorus atom).