Polymer for organic electroluminescent element, and organic electroluminescent element using the same

A polymer for an organic electroluminescent element, comprising a repeating unit represented by the following general formula (1) in a repeating unit constituting a main chain:

• where R's each represent a hydrogen atom, a C1 to C20 alkyl group, a C1 to C20 alkoxy group, a C6 to C30 aryl group, a C6 to C30 aryloxy group, a C7 to C36 arylalkyl group, a C7 to C36 arylalkyloxy group, a C3 to C30 heteroaryl group, a C3 to C30 heteroaryloxy group, or a C3 to C30 cycloalkyl group, and may be identical to or different from each other;
• Y's each represent a single bond, a C1 to C20 alkylene group, a C6 to C30 arylene group, a C3 to C30 heteroarylene group, CO, COO, or O;
• Z represents one kind or two or more kinds selected from indolocarbazolyl groups represented by the following formulae (2) to (7);
• W represents a charge transporting group and is different from Z;
• m and n represent molar ratios, m represents 0 to 95 mol %, and n represents 5 to 100 mol % relative to 100 mol % of all repeating units;
• and l represents an average number of repetitions and represents 2 to 10,000:
• in the formulae (2) to (7), X's each independently represent C—H, N, or C-L;
• L independently represents a C6 to C30 aryl group, a C3 to C30 heteroaryl group, or a C12 to C60 diarylamino group;
• and R1's each independently represent a C1 to C20 alkyl group, a C1 to C20 alkoxy group, a C6 to C30 aryl group, a C6 to C30 aryloxy group, a C7 to C36 arylalkyl group, a C7 to C36 arylalkyloxy group, a C3 to C30 heteroaryl group, a C3 to C30 heteroaryloxy group, or a C3 to C30 cycloalkyl group.