Organic electroluminescence device
View Patent ↗A process for preparing a platinum complex represented by the following formula (1) includes reacting a compound represented by the following formula (B-2) and a compound represented by the following formula (B-2′) with a compound represented by the following formula (A-0) to obtain a compound represented by the following formula (C-0); and reacting the compound represented by the formula (C-0) with a platinum salt:
1. A platinum complex represented by the following formula (1):
wherein
each of R 11 , R 12 , R 13 , R 14 , R 15 , R 16 , R A and R B independently represents a hydrogen atom or a substituent,
each of R 17 , R 18 , R 19 , and R 20 independently represents a hydrogen atom or a substituent, with the proviso that at least one of R 17 and R 18 represents an electron withdrawing substituent and at least one of R 19 and R 20 represents an electron withdrawing substituent, and
L 1 represents a single bond or a divalent linking group.
2. A platinum complex according to claim 1 , wherein
the formula (1) is represented by the following formula (2):
wherein
R 11 , R 12 , R 13 , R 14 , R 15 , R 16 , R 17 , R 18 , R 19 , R 20 , R A and R B have the same meanings as defined in the formula (1), and
each of R 21 and R 22 independently represents a hydrogen atom or a substituent.
3. An organic electroluminescence device comprising:
a pair of electrodes; and
an organic layer between the pair of electrodes, which contains the platinum complex as claimed in claim 1 .
4. An organic electroluminescence device comprising:
a pair of electrodes; and
an organic layer between the pair of electrodes, which comprises a light emitting layer containing the platinum complex as claimed in claim 1 .
5. A process for preparing a platinum complex represented by the following formula (1), the process comprising:
reacting a compound represented by the following formula (B-2) and a compound represented by the following formula (B-2′) with a compound represented by the following formula (A-0) to obtain a compound represented by the following formula (C-0); and
reacting the compound represented by the formula (C-0) with a platinum salt:
wherein
each of R 11 , R 12 , R 13 , R 14 , R 15 , R 16 , R A and R B independently represents a hydrogen atom or a substituent,
each of R 17 , R 18 , R 19 , and R 20 independently represents a hydrogen atom or a substituent, with the proviso that at least one of R 17 and R 18 represents an electron withdrawing substituent and at least one of R 19 and R 20 represents an electron withdrawing substituent, and
L 1 represents a single bond or a divalent linking group,
wherein
each of R 17 and R 18 independently represents a hydrogen atom or a substituent, with the proviso that at least one of R 17 and R 18 represents an electron withdrawing substituent, and
R A represents a hydrogen atom or a substituent,
wherein
each R 19 and R 20 independently represents a hydrogen atom or a substituent, with the proviso that at least one of R 19 and R 20 represents an electron withdrawing substituent, and
R B represents a hydrogen atom or a substituent,
wherein
each of R 11 , R 12 , R 13 , R 14 , R 15 , and R 16 independently represents a hydrogen atom or a substituent,
L 1 represents a single bond or a divalent linking group, and
X represents a halogen atom,
wherein
each of R 11 , R 12 , R 13 , R 14 , R 15 , R 16 , R A and R B independently represents a hydrogen atom or a substituent,
each of R 17 , R 18 , R 19 , and R 20 independently represents a hydrogen atom or a substituent, with the proviso that at least one of R 17 and R 18 represents an electron withdrawing substituent and at least one of R 19 and R 20 represents an electron withdrawing substituent, and
L 1 represents a single bond or a divalent linking group.
6. A platinum complex obtained by the process as claimed in claim 5 .