A Highly Emissive Cu_2N_2 Diamond Core Complex Supported by a [PNP]^- Ligand
- Creators
- Harkins, Seth B.
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Peters, Jonas C.
Abstract
A Cu2N2 diamond core structure, {(PNP)CuI}_(2) (2), supported by a [PNP]- ligand (1) ([PNP]^(-) = bis(2-(diisobutylphosphino)phenyl)amide) has been prepared. 2 is highly emissive at ambient temperature in both the solid and solution states and is characterized by a relatively long-lived excited state (τ > 10 μs) and an unusually high quantum yield (φ > 0.65). These observations are consistent with a low degree of structural reorganization between the ground state of 2 and its excited state *2, and also with a high degree of steric protection of the two copper centers of 2 afforded by the bulky [PNP]- ligand. An estimate for the excited-state reduction potential of *2 (ca. −3.2 V vs Fc^(+)/Fc), and the availability of two well-separated and reversible ground-state redox processes, suggests that bimetallic copper systems of these types may be interesting candidates to consider for photochemically driving multielectron redox transformations.
Additional Information
© 2005 American Chemical Society. Received November 16, 2004. This work was supported with funds provided by the NSF (CHE-01232216)) and the MC2 program in collaboration with BP. We acknowledge Dr. Jennifer C. Lee for technical assistance with the lifetime measurements, and Larry Henling for crystallographic assistance. Dr. Jay R. Winkler provided numerous insightful discussionsAttached Files
Supplemental Material - ja043092rsi20041116_073008.cif
Supplemental Material - ja043092rsi20050106_060518.pdf
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Additional details
- Alternative title
- A Highly Emissive Cu2N2 Diamond Core Complex Supported by a [PNP]- Ligand
- Eprint ID
- 47571
- Resolver ID
- CaltechAUTHORS:20140729-160417130
- NSF
- CHE-01232216
- BP
- Created
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2014-07-30Created from EPrint's datestamp field
- Updated
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2021-11-10Created from EPrint's last_modified field