| 摘要 |
PROBLEM TO BE SOLVED: To provide compositions which improve luminous characteristics such as the device life and the luminous efficiency.SOLUTION: The invention provides compositions containing at least one compound selected from the group consisting of A, B, C and D, where A, B, C and D are compositions containing compounds of specified quinazoline derivatives, and compositions of combinations thereof. The invention further provides an electronic device comprising at least one component formed from the compositions. |
