Pt complexes as phosphorescent emitters in the fabrication of organic light emitting diodes
AssigneeNational Tsing Hua University
InventorsYun Chi, Pi-Tai Chou, Sheng-Yuan Chang, Jakka Kavitha, Yu-Tai Tao
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Abstract
A series of Pt(II) complexes having the following formula are disclosed: X1 and X2 independently are C or N, X1 can also locate at another position of the hexagonal ring, when X1 is N; R1 is H, C1–C8 alkyl, or C1–C4 perfluoroalkyl, R2 is H, R1 and R2 together are C4–C8 alkylene, or R1 and R2 together are bridged carbocyclic C4–C12 alkylene, when X2 is C; R1 is H, C1–C8 alkyl, or C1–C4 perfluoroalkyl, and R2 is omitted, when X2 is N; R7 is H or methyl, and R8 is omitted, when X1 is N; R7 is H or methyl, R8 is H or methyl, or R7 and R8 together are when X1 is C.
Claims26
A Pt(II) complex having the following formula:
- wherein
- X1 and X2 independently are C or N;
- R1 is H, C1–C8 alky, or C1–C4 perfluoroalkyl, R2 is H, or R1 and R2 together are C4–C8 alkylene, or R1 and R2 together are bridged carbocyclic C4–C12 alkylene, when X2 is C;
- R1 is H, C1–C8 alkyl, or C1–C4 perfluoroalkyl, and R2 is omitted, when X2 is N;
- R7 is H or methyl, R8 is H or methyl, or R7 and R8 together are
- when X1 is C;
- R7 is H or methyl, and R8 is omitted, when X1 is N.
Dependencies are inferred from the claim text.