| abstract |
The present invention discloses a phenanthroline compound which can be used as electron-transporting material in organic electroluminescence devices is disclosed. The mentioned phenanthroline compound is represented by the following. n n n n n n n n n n wherein Ar is selected from the group consisting of hydrogen atom, alkyl, aryl, wherein R 1 , R 2 and R 3 are identical or different. R 1 , R 2 and R 3 are independently selected from the group consisting of hydrogen atom, alkyl, halide, wherein X 1 , X 2 and X 3 are identical or different. X 1 , X 2 and X 3 are independently selected from the atom or group consisting of O, S, N—R 4 and R 4 is selected from the group consisting of hydrogen atom, alkyl, aryl. |