ORGANIC ELECTROLUMINESCENT ELEMENT MATERIAL, COMPOSITION FOR ORGANIC ELECTROLUMINESCENT ELEMENT, ORGANIC ELECTROLUMINESCENT ELEMENT, ORGANIC EL DISPLAY, AND ORGANIC EL LIGHTING

摘要

PROBLEM TO BE SOLVED: To provide an organic electroluminescent element material capable of manufacturing an organic electroluminescent element having a low drive voltage and sufficient life by forming a light emission layer of the organic electroluminescent element by a wet film forming method. SOLUTION: The organic electroluminescent element material comprises a fluorescent light emission compound represented by formula (1). The organic electroluminescent element material is characterized in that an R value (%) in a laser desorption ionization mass spectrometry calculated by the following formula (a) is 0.5 or less (wherein Ar31-Ar35represents an aromatic hydrocarbon group which may have a substituent group). R value%=IAr(35)-N/I×100 (a). (In the formula (a), IAr(35)-Nrepresents ionic strength derived from cleavage between Ar35-N and addition to the fluorescent light emission compound after cleavage, and I represents total ionic strength). COPYRIGHT: (C)2010,JPO&INPIT