Narrow band red phosphorescent tetradentate platinum (II) complexes
View Patent ↗A complex represented by Formula I: wherein: each Ar 1 , Ar 2 , Ar 3 , Ar 4 , and Ar 5 present independently represents a substituted or unsubstituted aryl or heterocyclic aryl; each n is independently an integer of 0 to 4, as limited by valence; X represents O, S, NR 1a , SiR 1b R 1c , or CR 1d R 1e , where each of R 1a , R 1b , R 1c , R 1d , and R 1e independently represents substituted or unsubstituted C 1 -C 4 alkyl; Y 1a , Y 2a , Y 3b , and Y 4a each independently represents N or C; Y 3a represents N, CR 2a , or SiR 2b , where R 2a and R 2b represent hydrogen or substituted or unsubstituted C 1 -C 4 alkyl, aryl, or heterocyclic aryl; Y 5a and Y 5b each independently represents C or N; and Y 5c , Y 5d , and Y 5e each independently represents C, N, O, or S. Light emitting devices for full color displays may include a complex represented by Formula I.
1. A complex represented by Formula I:
wherein:
each Ar 1 , Ar 2 , Ar 3 , Ar 4 , and Ar 5 present independently represents a substituted or unsubstituted aryl or heterocyclic aryl;
each n is independently an integer of 0 to 4, as limited by valence;
X represents O, S, NR 1a , SiR 1b R 1c , or CR 1d R 1e , where each of R 1a , R 1b , R 1c , R 1d , and R 1e independently represents substituted or unsubstituted C 1 -C 4 alkyl;
Y 1a , Y 2a , Y 3b , and Y 4a each independently represents N or C;
Y 3a represents N, CR 2a , or SiR 2b , where R 2a and R 2b represent hydrogen or substituted or unsubstituted C 1 -C 4 alkyl, aryl, or heterocyclic aryl;
Y 5a and Y 5b each independently represents C or N; and
Y 5c , Y 5d , and Y 5e each independently represents C, N, O, or S;
provided that when the ring comprising Y 5a through Y 5e represents pyridine, then at least one of Ar 1 , Ar 2 , Ar 3 , Ar 4 , and Ar 5 is present.
2. The complex of claim 1 , wherein at least one of Ar 1 , Ar 2 , Ar 3 , Ar 4 , and Ar 5 is present.
3. The complex of claim 2 , wherein one of Ar 1 , Ar 2 , Ar 3 , Ar 4 , and Ar 5 is present.
4. The complex of claim 2 , wherein two of Ar 1 , Ar 2 , Ar 3 , Ar 4 , and Ar 5 are present.
5. The complex of claim 4 , wherein Ar 1 and Ar 2 ; Ar 1 and Ar 3 ; Ar 1 and Ar 4 ; Ar 1 and Ar 5 ; Ar 2 and Ar 3 ; Ar 2 and Ar 4 ; Ar 2 and Ar 5 ; Ar 3 and Ar 4 ; Ar 3 and Ar 5 ; or Ar 4 and Ar 5 are present.
6. The complex of claim 2 , wherein three of Ar 1 , Ar 2 , Ar 3 , Ar 4 , and Ar 5 are present.
7. The complex of claim 6 , wherein Ar 1 , Ar 2 , and Ar 3 ; Ar 1 , Ar 2 , and Ar 4 ; Ar 1 , Ar 2 , and Ar 5 ; Ar 3 , and Ar 4 ; Ar 3 , and Ar 5 ; Ar 4 , and Ar 5 ; Ar 2 , Ar 3 , and Ar 4 ; Ar 2 , Ar 3 , and Ar 5 ; Ar 2 , Ar 4 , and Ar 5 ; or Ar 3 , Ar 4 , and Ar 5 are present.
8. The complex of claim 2 , wherein four of Ar 1 , Ar 2 , Ar 3 , Ar 4 , and Ar 5 are present.
9. The complex of claim 8 , wherein Ar 1 , Ar 2 , Ar 3 , and Ar 4 ; Ar 1 , Ar 2 , Ar 3 , and Ar 5 ; Ar 1 , Ar 2 , Ar 4 , and Ar 5 ; Ar 3 , Ar 4 , and Ar 5 ; or Ar 2 , Ar 3 , Ar 4 , and Ar 5 are present.
10. The complex of claim 1 , wherein each Ar 1 , Ar 2 , Ar 3 , Ar 4 , and Ar 5 present independently represents pyrrolyl, furanyl, thiophenyl, imidazolyl, pyrazolyl, oxazolyl, isooxazolyl, thiazolyl, isothiazolyl, trazolyl, furazanyl, oxadiazolyl, thidiazolyl, dithiazolyl, tetrazolyl, phenyl, pyridinyl, pyranyl, thiopyranyl, diazinyls, oxazinyls, thiazinyls, dioxinyls, dithiinyls, triazinyls, tetrazinyls, pentazinyls, pyrimidyl, pyridazinyl, pyrazinyl, biphenyl, naphthyl, fluorenyl, carbazolyl, phenothiazinyl, acridinyl, and dihydroacridinyl.
11. The complex of claim 1 , wherein the complex is selected from one of the following structures, where Z represents O, S, NR, PR, CRR′, or Si RR′, where R and R′ each independently represents substituted or unsubstituted C 1 -C 4 alkyl, aryl, or heterocyclic aryl:
12. The complex of claim 1 , wherein the complex has the following structure:
13. A complex having the following structure:
14. A light emitting device comprising the complex of claim 1 .
15. A complex having the following structure: