| abstract |
A thermally stable room temperature phosphorescent material is provided. An organic aromatic compound containing a halogen atom or deuterium and having room temperature phosphorescence. Examples of the organic material include carbazole compounds represented by the following general formula (I). (Wherein R 1 is H, an alkyl group, an alkenyl group, a substituted, unsubstituted aromatic or heterocyclic compound, and R 1 forms a condensed ring with either or both of R 2 and R 9. The condensed ring may be an aromatic ring or a non-aromatic ring, R 2 to R 9 may be H, deuterium, a halogen atom, or a substituted or unsubstituted aromatic or heterocyclic group, and R 2 to R 9 may be Adjacent substituents may form a condensed ring.) [Selection figure] None |