| abstract |
The present invention is a light-emitting material containing a conjugated polymer compound (A) containing an aromatic ring in a main chain and a compound (B) exhibiting light emission from a triplet excited state, calculated by the calculated chemical method of the polymer compound (A). The energy difference between the vacuum level and the lowest unoccupied orbital (LUMO) level in the ground state is 1.3 eV, or the energy difference between the vacuum level and the lowest unoccupied orbital (LUMO) level in the ground state is 2.2 eV or more, Moreover, it is related with the light emitting material characterized by satisfy | filling (condition 1) described below.n n n (Condition 1) The energy of the ground state of the high molecular compound (A) (ES A0 ), the energy of the lowest triplet excitation state of the high molecular compound (A) (ET A ), and the energy of the ground state of the compound (B) (ES B0 ) and the lowest excitation energy (ET B) of the triplet state of the compound (B) satisfy the relationship of ET a -ES A0> ET B -ES B0.n n n Light emitting material, polymer light emitting device, conjugated polymer compound, ground state, triplet excited state, photoluminescence intensity, emission peak, repeat unit |