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Hernández‐Ayala LF, Novoa‐Ramírez CS, Reina M, Ruiz‐Azuara L. Mixed Ru
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Complexes Containing Diseleno‐Ligand and α,β‐Diketones Donors with Anticancer Activity. Synthesis, Characterization, Electrochemical and DFT Studies. Eur J Inorg Chem 2021. [DOI: 10.1002/ejic.202100756] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Luis Felipe Hernández‐Ayala
- Laboratorio de Química Inorgánica Medicinal Facultad de Química Universidad Nacional Autónoma de México Av. Universidad 3000, Circuito Exterior s/n, CU, P.O. Box 70–360 04510 México City México
| | - Cynthia Sinaí Novoa‐Ramírez
- Laboratorio de Química Inorgánica Medicinal Facultad de Química Universidad Nacional Autónoma de México Av. Universidad 3000, Circuito Exterior s/n, CU, P.O. Box 70–360 04510 México City México
| | - Miguel Reina
- Laboratorio de Química Inorgánica Medicinal Facultad de Química Universidad Nacional Autónoma de México Av. Universidad 3000, Circuito Exterior s/n, CU, P.O. Box 70–360 04510 México City México
| | - Lena Ruiz‐Azuara
- Laboratorio de Química Inorgánica Medicinal Facultad de Química Universidad Nacional Autónoma de México Av. Universidad 3000, Circuito Exterior s/n, CU, P.O. Box 70–360 04510 México City México
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Luo Y, Maloul S, Schönweiz S, Wächtler M, Streb C, Dietzek B. Yield-not only Lifetime-of the Photoinduced Charge-Separated State in Iridium Complex-Polyoxometalate Dyads Impact Their Hydrogen Evolution Reactivity. Chemistry 2020; 26:8045-8052. [PMID: 32237163 PMCID: PMC7383969 DOI: 10.1002/chem.202000982] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Indexed: 11/11/2022]
Abstract
Covalently linked photosensitizer-polyoxometalate (PS-POM) dyads are promising molecular systems for light-induced energy conversion processes, such as "solar" hydrogen generation. To date, very little is known of their fundamental photophysical properties which affect the catalytic reactivity and stability of the systems. PS-POM dyads often feature short-lived photoinduced charge-separated states, and the lifetimes of these states are considered crucial for the function of PS-POM dyads in molecular photocatalysis. Hence, strategies have been developed to extend the lifetimes of the photoinduced charge-separated states, either by tuning the PS photophysics or by tuning the POM redox properties. Recently, some of us reported PS-POM dyads based on cyclometalated IrIII complexes covalently linked to Anderson-type polyoxometalate. Distinct hydrogen evolution reactivity (HER) of the dyads was observed, which was tuned by varying the central metal ion M of the POMM (M=Mn3+ , Co3+ , Fe3+ ). In this manuscript, the photoinduced electron-transfer processes in the three Ir-POMM dyads are investigated to rationalize the underlying reasons for the differences in HER activity observed. We report that upon excitation of the IrIII complex, ultrafast (sub-ps) charge separation occurs, leading to different amounts of the charge-separated states (Ir.+ -POMM .- ) generated in the different dyads. However, in all dyads studied, the resulting Ir.+ -POMM .- species are short-lived (sub-ns) when compared to reference electron acceptors (e.g. porphyrins or fullerenes) reported in the literature. The reductive quenching of Ir.+ -POMM .- by a sacrificial donor, triethyl amine (1 m), to generate the intermediate Ir-POMM .- is estimated to be very efficient (70-80 %) for all dyads studied. Based on this analyses, we conclude that the yield instead of the lifetime of the Ir.+ -POMM .- charge-separated state determines the catalytic capacity of the dyads investigated. This new feature in the PS-POM photophysics could lead to new design criteria for the development of novel PS-POM dyads.
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Affiliation(s)
- Yusen Luo
- Institute of Physical Chemistry and Abbe Center of Photonics, Friedrich-Schiller-University Jena, Helmholtzweg 4, 07743, Jena, Germany.,Department Functional Interfaces, Leibniz Institute of Photonic Technology (IPHT), Albert-Einstein-Strasse 9, 07745, Jena, Germany
| | - Salam Maloul
- Institute of Inorganic Chemistry I, Ulm University, Albert-Einstein-Allee 11, 89081, Ulm, Germany
| | - Stefanie Schönweiz
- Institute of Inorganic Chemistry I, Ulm University, Albert-Einstein-Allee 11, 89081, Ulm, Germany
| | - Maria Wächtler
- Institute of Physical Chemistry and Abbe Center of Photonics, Friedrich-Schiller-University Jena, Helmholtzweg 4, 07743, Jena, Germany.,Department Functional Interfaces, Leibniz Institute of Photonic Technology (IPHT), Albert-Einstein-Strasse 9, 07745, Jena, Germany
| | - Carsten Streb
- Institute of Inorganic Chemistry I, Ulm University, Albert-Einstein-Allee 11, 89081, Ulm, Germany
| | - Benjamin Dietzek
- Institute of Physical Chemistry and Abbe Center of Photonics, Friedrich-Schiller-University Jena, Helmholtzweg 4, 07743, Jena, Germany.,Department Functional Interfaces, Leibniz Institute of Photonic Technology (IPHT), Albert-Einstein-Strasse 9, 07745, Jena, Germany.,Center for Energy and Environmental Chemistry Jena (CEEC Jena), Friedrich-Schiller-University Jena, Philosophenweg 7a, 07743, Jena, Germany
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Yu W, Li B, Zhang Y, Yan Q, Yan J. Discovery of a Fullerene-Polyoxometalate Hybrid Exhibiting Enhanced Photocurrent Response. Inorg Chem 2020; 59:5266-5270. [PMID: 32250606 DOI: 10.1021/acs.inorgchem.0c00188] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
A new C60-polyoxometalate compound was synthesized by a C60 derivative with a {SiW11Mn} cluster connecting through a coordination bond and characterized. The photocurrent response test showed great improvement of this new compound compared to C60 and the polyoxometalate precursor, which could be used as a potential photoelectric material.
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Affiliation(s)
- Weidong Yu
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, Hunan, P. R. China
| | - Bin Li
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, Hunan, P. R. China
| | - Yin Zhang
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, Hunan, P. R. China
| | - Qianwen Yan
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, Hunan, P. R. China
| | - Jun Yan
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, Hunan, P. R. China.,Hunan Provincial Key Laboratory of Efficient and Clean Utilization of Manganese Resources, Central South University, Changsha 410083, Hunan, P. R. China
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Zhou Z, Xin N, Gan L. Synthesis of Metal Complexes with an Open-Cage Fullerene as the Ligand. Chemistry 2017; 24:451-457. [DOI: 10.1002/chem.201704517] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2017] [Indexed: 11/06/2022]
Affiliation(s)
- Zishuo Zhou
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Bioorganic Chemistry and Molecular Engineering of the Ministry of Education, College of Chemistry and Molecular Engineering; Peking University; Beijing 100871 China
| | - Nana Xin
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Bioorganic Chemistry and Molecular Engineering of the Ministry of Education, College of Chemistry and Molecular Engineering; Peking University; Beijing 100871 China
| | - Liangbing Gan
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Bioorganic Chemistry and Molecular Engineering of the Ministry of Education, College of Chemistry and Molecular Engineering; Peking University; Beijing 100871 China
- State Key Laboratory of Organometallic Chemistry; Shanghai Institute of Organic Chemistry; Shanghai 200032 China
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