Polymer, composition for organic electroluminescent element, organic electroluminescent element, organic EL display device, organic EL lighting, and manufacturing method for organic electroluminescent element
摘要
說(shuō)明書
Moreover, even when the excited exciton has an energy level lower than the excited singlet level (S1), a change in the molecular conformation causes hardly any thermal consumption of the energy of the exciton.
The “repeating unit represented by Formula (1)” and the “repeating unit represented by Formula (2)” will now be described in detail.
[Repeating Unit Represented by Formula (1)]
(R1 and R2)
In the repeating unit represented by Formula (1), R1 and R2 each independently represent a linear, branched or cyclic alkyl group optionally having a substituent. The number of carbon atoms of the alkyl group is not particularly restricted; however, in order to maintain the solubility of the polymer, it is preferably 1 to 8, more preferably 6 or less, still more preferably 3 or less, and the alkyl group is yet still more preferably a methyl group or an ethyl group.
When there are plural R1s and R2s in the repeating unit, the R1s and the R2s are optionally the same or different; however, all of the R1s and R2s are preferably the same groups since this allows a charge to be distributed uniformly around the nitrogen atom and makes the synthesis easy.
(R7 to R9 and R11 to R14)
R7 to R9 and R11 to R14 each independently represent an alkyl group optionally having a substituent, an aralkyl group optionally having a substituent, or an aromatic hydrocarbon group optionally having a substituent.
