| 摘要 |
PROBLEM TO BE SOLVED: To provide a composition used for films and electronic devices, such as organic light-emitting diodes (OLED), especially for a hole injection layer.SOLUTION: A composition comprises at least one dopant, and a polymer comprising at least one unit selected from the specified structural formula I, where M is selected from Fe, Co, or Ni; x is from 0 to 4; and y is from 0 to 4. |
