Organic electroluminescent device, display, and illuminating device

An organic electroluminescent element comprising a cathode and an anode having therebetween at least one organic compound layer,

• wherein one of the organic compound layer comprises a polymer having one of repeat units represented by Formula (2):
• wherein Ar2 represents an arylene group which may have a substituent or a heteroarylene group having not more than two heteroatoms, which may have a substituent;
• L2 represents a linkage group selected from Group 2;
• and L3 represents a single bond or a linkage group selected from Group 3;
• X represents one of a hole transport group, an electron transport group, a fluorescent group and a phosphorescent group;
• and n2 represents an integer of not less than two:
• wherein R1-R6 each independently represent an alkyl group or an aryl group, provided that R3 and R4, or R5 and R6 may be joined to form a ring, and R7-R13 each independently represent an alkyl group or an aryl group, provided that R10 and R11, or R12 and R13 may be joined to form a ring.

An organic electroluminescent element comprising a cathode and an anode having therebetween at least one organic compound layer,

• wherein one of the organic compound layer comprises a copolymer represented by Formula (22):
• wherein Ar1 to Arm each represent an arylene group which may have a substituent or a heteroarylene group which may have a substituent;
• m represents an integer of not less than two;
• Ar1 to Arm may be the same or may be different;
• the heteroarylene group comprises not more than two heteroatoms;
• K1 to Km each represent a single bond or a linkage group selected from Group 3;
• and X1 to Xm each represent a hole transport group, an electron transport group or a phosphorescent group:
• wherein R7-R13 each independently represent an alkyl group or an aryl group, provided that R10 and R11, or R12 and R13 may be joined to form a ring.

An organic electroluminescent element comprising a cathode and an anode having therebetween at least one organic compound layer,

• wherein one of the organic compound layer comprises a mixture of two or more polymers each represented by Formulas (1), (2), (21) or (22):
• wherein Ar1 represents an arylene group which may have a substituent or a heteroarylene group having not more than two heteroatoms, which may have a substituent;
• and L1 represents a linkage group selected from Group 1;
• and n1 represents an integer of not less than two:
• wherein R1-R6 each independently represent an alkyl group or an aryl group, provided that R3 and R4, or R5 and R6 may be joined to form a ring,
• wherein Ar2 represents an arylene group which may have a substituent or a heteroarylene group having not more than two heteroatoms, which may have a substituent;
• L2 represents a linkage group selected from Group 2;
• and L3 represents a single bond or a linkage group selected from Group 3;
• X represents one of a hole transport group, an electron transport group, a fluorescent group and a phosphorescent group;
• and n2 represents an integer of not less than two:
• wherein R1-R6 each independently represent an alkyl group or an aryl group, provided that R3 and R4, or R5 and R6 may be joined to form a ring, and R7-R13 each independently represent an alkyl group or an aryl group, provided that R10 and R11, or R12 and R13 may be joined to form a ring,
• wherein Ar represents an arylene group which may have a substituent or a heteroarylene group which may have a substituent;
• Z1 and Z2 each represent a 6-membered aromatic ring comprising a group of atoms of carbon, hydrogen or nitrogen, provided that Z1 and Z2 may be different, and
• wherein Ar1 to Arm each represent an arylene group which may have a substituent or a heteroarylene group which may have a substituent;
• m represents an integer of not less than two;
• Ar1 to Arm may be the same or may be different;
• the heteroarylene group comprises not more than two heteroatoms;
• K1 to Km each represent a single bond or a linkage group selected from above Group 3;
• and X1 to Xm each represent a hole transport group, an electron transport group or a phosphorescent group.