π-conjugated compound, organic electroluminescence element material, light emitting material, charge transport material, light emitting thin film, organic electroluminescence element, display device and lighting device

摘要

An object of the present invention is to provide a π-conjugated compound that can increase the luminous efficiency of an organic EL device. The present invention is a π-conjugated compound having a structure represented by any one of formulas (1) to (6). [Chemical 1] (In the formulas (1) to (6), L and M represent an electron donating group D or an electron withdrawing group A, Q represents a carbon or nitrogen atom, and the electron donating group D represents an electron donating group. An aryl group substituted with, a heterocyclic group of an electron donating group which may be substituted, or an amino group which may be substituted, and the electron withdrawing group A is a carbonyl group which may be substituted , An optionally substituted sulfonyl group, an optionally substituted phosphine oxide group, an optionally substituted boryl group, an aryl group optionally substituted with an electron withdrawing group, an electron withdrawing group A substituted electron donating heterocyclic group or an optionally substituted electron withdrawing heterocyclic group, and R represents a carbon, oxygen, nitrogen, sulfur, boron or silicon atom.)