Synthesis of Perfluoroalkyl Phenanthroline Ligands for use in Cu(I) Complexes
Event Type
Research Presentation
Academic Department
Chemistry
Location
Dana Science Building, 2nd floor
Start Date
26-4-2024 1:30 PM
End Date
26-4-2024 3:00 PM
Description
Under the direction of Dr. Brian J. Reeves
Ruthenium (Ru(II)) polypyridyl complexes have attracted interest in the last decade due to their outstanding photophysical properties. The versatility of Ru(II) polypyridyl complexes has been demonstrated by their use in dye sensitized solar cells, light emitting diodes, light-emitting electrochemical cells, as well as catalytic systems. Unfortunately, the high cost of ruthenium complexes poses a significant barrier in their widespread adoption despite their valuable properties. Recently, copper (Cu(I)) polypyridyl complexes have gained attention as a low-cost alternative to the well-studied Ru(II) polypyridyl complexes. Recent experiments have revealed that the Cu(I) MLCT excited states undergoes a pseudo-Jahn-Teller distortion resulting in an exposed metal center enabling solvent coordination that shortens the excited-state lifetime. The diminished emission lifetime and quantum yield of Cu(I) polypyridine MLCT excited states compared to their Ru(II) counterparts limit their use in systems that require prolonged luminescence or quantum efficiency. This study serves to explore the synthesis and use of perfluoroalkyl phenanthroline ligands as an avenue to lessening the degree of pseudo-Jahnteller distortion and extending the excited state lifetimes for Cu(I) polypyridyl complexes.
Synthesis of Perfluoroalkyl Phenanthroline Ligands for use in Cu(I) Complexes
Dana Science Building, 2nd floor
Under the direction of Dr. Brian J. Reeves
Ruthenium (Ru(II)) polypyridyl complexes have attracted interest in the last decade due to their outstanding photophysical properties. The versatility of Ru(II) polypyridyl complexes has been demonstrated by their use in dye sensitized solar cells, light emitting diodes, light-emitting electrochemical cells, as well as catalytic systems. Unfortunately, the high cost of ruthenium complexes poses a significant barrier in their widespread adoption despite their valuable properties. Recently, copper (Cu(I)) polypyridyl complexes have gained attention as a low-cost alternative to the well-studied Ru(II) polypyridyl complexes. Recent experiments have revealed that the Cu(I) MLCT excited states undergoes a pseudo-Jahn-Teller distortion resulting in an exposed metal center enabling solvent coordination that shortens the excited-state lifetime. The diminished emission lifetime and quantum yield of Cu(I) polypyridine MLCT excited states compared to their Ru(II) counterparts limit their use in systems that require prolonged luminescence or quantum efficiency. This study serves to explore the synthesis and use of perfluoroalkyl phenanthroline ligands as an avenue to lessening the degree of pseudo-Jahnteller distortion and extending the excited state lifetimes for Cu(I) polypyridyl complexes.