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The Synthesis, Characterization and Reactivity of a Series of Ruthenium N-triphosPh Complexes
Published on: April 10, 2015
Emissive chromium(III) complexes with substituted arylethynyl ligands.
David L Grisenti1, W Walsh Thomas, Christopher R Turlington
1Department of Chemistry, Furman University, Greenville, South Carolina 29613, USA.
New chromium(III) complexes featuring arylethynyl ligands exhibit luminescence. These novel compounds, specifically trans-[Cr(cyclam)(arylethynyl)2]trifluoromethanesulfonate, show excited-state lifetimes between 200 and 300 microseconds.
Area of Science:
- Organometallic Chemistry
- Coordination Chemistry
- Materials Science
Background:
- Chromium complexes are investigated for their unique electronic and photophysical properties.
- Arylethynyl ligands offer tunable electronic characteristics for metal complexes.
- Luminescent coordination compounds have applications in sensing and optoelectronics.
Purpose of the Study:
- To synthesize and characterize novel arylethynylchromium(III) complexes.
- To investigate the photoluminescent properties of these new complexes.
- To determine the excited-state lifetimes of the emissive chromium complexes.
Main Methods:
- Synthesis of trans-[Cr(cyclam)(CCC(6)H(4)R)2]OTf complexes.
- Characterization using Infrared (IR) spectroscopy.
- Structural analysis via X-ray diffraction.
- Photoluminescence measurements in deoxygenated fluid solution.
Main Results:
- Successful preparation and characterization of target chromium(III) complexes.
- Confirmation of the trans geometry and coordination environment.
- Observation of luminescence in the synthesized complexes.
- Measurement of excited-state lifetimes ranging from 200 to 300 microseconds.
Conclusions:
- Arylethynylchromium(III) complexes are successfully synthesized and structurally confirmed.
- These complexes display luminescence, indicating potential for photophysical applications.
- The measured excited-state lifetimes suggest stability in fluid solutions.
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