The phosphorescence material, compound, a phosphorescent coating and an organic light emitting ele

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PROBLEM TO BE SOLVED : To provide chemical compounds useful as phosphorescent materials.SOLUTION : A phosphorescent material comprises a chemical compound represented by the general formula (1). [Rto R, Rto R, Rto R, Rto Rare each independently H or a substituent; Ris an aryl group having a tertiary amino group; Ris H or a hydroxy group (-OH) and Ris H, or Rand Rtogether form an oxo group (=O).]