METHOD FOR PURIFYING CHARGE-TRANSPORTING POLYMER MATERIAL, CHARGE-TRANSPORTING POLYMER MATERIAL, AND ORGANIC ELECTROLUMINESCENT ELEMENT

摘要

PROBLEM TO BE SOLVED: To provide a method for purifying a charge transporting polymer material suitable for making organic EL elements having sufficient brightness, stable electric characteristics and excellent durability, and the like. SOLUTION: This method for purifying the charge transporting polymer material, comprising purifying the charge transporting polymer material from a solution of the unpurified charge transporting polymer material in an organic solvent, is characterized by controlling the dielectric constant of the organic solvent to≤6 and including a process for bringing the solution into contact with an oxide containing at least one element selected from the group 1 to 14 elements. COPYRIGHT: (C)2005,JPO&NCIPI