| abstract |
A polymer compound having a conjugated polymer main chain and at least one side chain selected from the following (a), (b) and (c):n (a) side chain having electron transportability, wherein the value of LUMO energy of the side chain and the value of LUMO energy of the conjugated polymer main chain are mutually different, and the absolute value of the difference thereof is 0.3 eV or less, (b) side chain having hole transportability, wherein the value of HOMO energy of the side chain and the value of HOMO energy of the conjugated polymer main chain are mutually different, and the absolute value of the difference thereof is 0.3 eV or less, (c) side chain having electron transportability and hole transportability, wherein the value of LUMO energy of the side chain and the value of LUMO energy of the conjugated polymer main chain are mutually different, and the absolute value of the difference thereof is 0.3 eV or less, and the value of HOMO energy of the side chain and the value of HOMO energy of the conjugated polymer main chain are mutually different, and the absolute value of the difference thereof is 0.3 eV or less. |