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Kohler L, Hayes D, Hong J, Carter TJ, Shelby ML, Fransted KA, Chen LX, Mulfort KL. Synthesis, structure, ultrafast kinetics, and light-induced dynamics of CuHETPHEN chromophores. Dalton Trans 2018; 45:9871-83. [PMID: 26924711 DOI: 10.1039/c6dt00324a] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Five heteroleptic Cu(i)bis(phenanthroline) chromophores with distinct variation in the steric bulk at the 2,9-phenanthroline position were synthesized using the HETPHEN method, and their ground and excited state properties are described. Analysis of the crystal structures reveals a significant distortion from tetrahedral geometry around the Cu(i) centre which is attributed to favourable aromatic interactions between the two phenanthroline ligands. Ultrafast and nanosecond transient optical spectroscopies reveal that the excited state lifetime can be tuned across two orders of magnitude up to 74 nanoseconds in acetonitrile by changing the 2,9-substituent from hydrogen to sec-butyl. X-ray transient absorption spectroscopy at the Cu K-edge confirmed Cu(i) oxidation to Cu(ii) and revealed a decrease of the Cu-N bond lengths in the excited state. The ground and excited state characterization presented here will guide the integration of CuHETPHEN chromophores into complex electron donor-acceptor architectures.
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Affiliation(s)
- Lars Kohler
- Division of Chemical Sciences and Engineering, Argonne National Laboratory, 9700 South Cass Ave, Argonne, IL 60439, USA.
| | - Dugan Hayes
- Division of Chemical Sciences and Engineering, Argonne National Laboratory, 9700 South Cass Ave, Argonne, IL 60439, USA.
| | - Jiyun Hong
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208, USA
| | - Tyler J Carter
- Division of Chemical Sciences and Engineering, Argonne National Laboratory, 9700 South Cass Ave, Argonne, IL 60439, USA.
| | - Megan L Shelby
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208, USA
| | - Kelly A Fransted
- Division of Chemical Sciences and Engineering, Argonne National Laboratory, 9700 South Cass Ave, Argonne, IL 60439, USA.
| | - Lin X Chen
- Division of Chemical Sciences and Engineering, Argonne National Laboratory, 9700 South Cass Ave, Argonne, IL 60439, USA. and Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208, USA
| | - Karen L Mulfort
- Division of Chemical Sciences and Engineering, Argonne National Laboratory, 9700 South Cass Ave, Argonne, IL 60439, USA.
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Achard T, Tortoreto C, Poblador-Bahamonde AI, Guénée L, Bürgi T, Lacour J. [CpRu]-Catalyzed Carbene Insertions into Epoxides: 1,4-Dioxene Synthesis through SN1-Like Chemistry with Retention of Configuration. Angew Chem Int Ed Engl 2014; 53:6140-4. [DOI: 10.1002/anie.201402994] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2014] [Revised: 03/24/2014] [Indexed: 11/08/2022]
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Achard T, Tortoreto C, Poblador-Bahamonde AI, Guénée L, Bürgi T, Lacour J. [CpRu]-Catalyzed Carbene Insertions into Epoxides: 1,4-Dioxene Synthesis through SN1-Like Chemistry with Retention of Configuration. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201402994] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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