Air-stable, blue light emitting chemical compounds
We report the synthesis and characterization of four novel CCC-NHC pincer platinum(II) and palladium(II) complexes, which adopt a distorted square planar configuration. These complexes emit bright blue light in the solid state under UV irradiation with emissions that are stable in ambient atmosphere (O2 and H2O) for extended periods. We also report the synthesis and characterization of CCC-NHC pincer ligand nickel complexes, and solid state fluorescence spectra have been collected for two of the complexes reported. X-ray structural analysis of a representative compound exhibits a distorted square planar geometry. Finally, we report the synthesis and characterization of CCC-NHC pincer ligand complexes for abnormal carbenes, triazole, and BIA.
1. A compound having the formula:
wherein R is an alkyl or aryl group that may contain heteroatoms;
R 1 is a hydrogen, alkyl or aryl group that may contain a heteroatom substituent;
R 2 , R 3 , R 4 , R 5 are selected from the group consisting of hydrogen, alkyl or aryl groups that may contain heteroatoms;
M is selected from the group consisting of metals;
L is a ligand;
x is any number between 0 and 3;
and n is any number between 0 and 6.
2. The compound of claim 1 , wherein at least one of R, R 1 , R 2 , R 3 , R 4 , or R 5 comprises at least one heteroatom, and wherein said at least one heteroatom comprises at least one silicon atom.
3. The compound of claim 1 , wherein M is platinum.
4. The compound of claim 1 , wherein M is palladium.
5. The compound of claim 1 , wherein M is nickel.
6. The compound of claim 1 wherein M is selected from the group consisting of ruthenium, iron, rhodium, iridium, titanium, osmium, cobalt, gold, silver, and copper.
7. A method of preparing the compound of claim 1 comprising the steps of:
a) combining a bis-salt and a metal amido reagent in an organic solvent;
b) after a period of time adding a second metal salt to effect transmetallation; and
c) Adding water to form a precipitate.
8. The method of claim 7 wherein the metal of the metal amido reagent is selected from the list consisting of Zirconium, Titanium, Hafnium, Tantalum, and Scandium.
9. A method for producing light of wavelength in range of 360 nm to 1300 nm comprising the steps of:
a) placing the compound of claim 1 on a surface or in a film; and
b) irradiating said compound with UV light or other excitation energy sources.
10. A method for producing light of wavelength in range of 360 nm to 1300 nm comprising the steps of:
a) placing the compound of claim 1 in a matrix; and
b) irradiating the compound with UV light or other excitation energy sources.
11. A method of producing light wherein the compound of claim 1 is excited by an energy source.
12. A device incorporating the compound of claim 1 .
13. A method for making a laser wherein the compound of claim 1 is excited by an energy source.
14. A device for producing light comprising the compound of claim 1 .
15. The device of claim 14 wherein said light is white light.
16. The device of claim 14 wherein said light is laser.
17. The device of claim 14 wherein said compound is excited as part of a method for making an OLED.
18. The compound of claim 1 wherein said compound is excited by an energy source as part of a photovoltaic cell.
19. An electroluminescent device utilizing the compound of claim 1 .
20. A device using the compound of claim 1 wherein the compound is phosphorescent.
21. A compound having the formula
wherein R, R2 are selected from the group consisting of a hydrogen, alkyl or aryl group that may contain heteroatoms;
R 1 is an alkyl or aryl group that may contain heteroatoms;
R3 is selected from the group consisting of hydrogen, alkyl or aryl groups that may contain heteroatoms;
M is selected from the group consisting of metals;
L is a ligand;
x is any number between 0 and 3;
and n is any number between 0 and 6.
22. A method of preparing the compound of claim 21 comprising the steps of:
a) combining a bis-salt and a metal amido reagent in an organic solvent;
b) after a period of time adding a second metal salt to effect transmetallation; and
c) Adding water to form a precipitate.
23. The method of claim 22 wherein the metal of the metal amido reagent is selected from the list consisting of Zirconium, Titanium, Hafnium, Tantalum, and Scandium.
24. A method for producing light of wavelength in range of 360 nm to 1300 nm comprising the steps of:
a) placing the compound of claim 21 on a surface or in a film; and
b) irradiating said compound with UV light or other excitation energy sources.
25. A method of producing light wherein the compound of claim 21 is excited by an energy source.
26. A device incorporating the compound of claim 21 .
27. A method for making a laser wherein the compound of claim 21 is excited by an energy source.
28. A device for producing light comprising the compound of claim 21 .
29. The device of claim 28 wherein said light is white light.
30. The device of claim 28 wherein said light is laser.
31. The device of claim 30 wherein said compound is excited as part of a method for making an OLED.
32. The compound of claim 21 wherein said compound is excited by an energy source as part of a photovoltaic cell.
33. An electroluminescent device utilizing the compound of claim 21 .
34. A device using the compound of claim 21 wherein the compound is phosphorescent.