1
|
Photoinduced electron transfer in triazole-bridged donor-acceptor dyads – A critical perspective. Coord Chem Rev 2022. [DOI: 10.1016/j.ccr.2022.214764] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
2
|
Desiatkina O, Mösching M, Anghel N, Boubaker G, Amdouni Y, Hemphill A, Furrer J, Păunescu E. New Nucleic Base-Tethered Trithiolato-Bridged Dinuclear Ruthenium(II)-Arene Compounds: Synthesis and Antiparasitic Activity. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27238173. [PMID: 36500266 PMCID: PMC9738179 DOI: 10.3390/molecules27238173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Revised: 11/18/2022] [Accepted: 11/22/2022] [Indexed: 11/25/2022]
Abstract
Aiming toward compounds with improved anti-Toxoplasma activity by exploiting the parasite auxotrophies, a library of nucleobase-tethered trithiolato-bridged dinuclear ruthenium(II)-arene conjugates was synthesized and evaluated. Structural features such as the type of nucleobase and linking unit were progressively modified. For comparison, diruthenium hybrids with other type of molecules were also synthesized and assessed. A total of 37 compounds (diruthenium conjugates and intermediates) were evaluated in a primary screening for in vitro activity against transgenic Toxoplasma gondii tachyzoites constitutively expressing β-galactosidase (T. gondii β-gal) at 0.1 and 1 µM. In parallel, the cytotoxicity in non-infected host cells (human foreskin fibroblasts, HFF) was determined by alamarBlue assay. Twenty compounds strongly impairing parasite proliferation with little effect on HFF viability were subjected to T. gondii β-gal half maximal inhibitory concentration determination (IC50) and their toxicity for HFF was assessed at 2.5 µM. Two promising compounds were identified: 14, ester conjugate with 9-(2-oxyethyl)adenine, and 36, a click conjugate bearing a 2-(4-(hydroxymethyl)-1H-1,2,3-triazol-1-yl)methyl substituent, with IC50 values of 0.059 and 0.111 µM respectively, significantly lower compared to pyrimethamine standard (IC50 = 0.326 µM). Both 14 and 36 exhibited low toxicity against HFF when applied at 2.5 µM and are candidates for potential treatment options in a suitable in vivo model.
Collapse
Affiliation(s)
- Oksana Desiatkina
- Department of Chemistry, Biochemistry and Pharmaceutical Sciences, University of Bern, Freiestrasse 3, 3012 Bern, Switzerland
| | - Martin Mösching
- Department of Chemistry, Biochemistry and Pharmaceutical Sciences, University of Bern, Freiestrasse 3, 3012 Bern, Switzerland
| | - Nicoleta Anghel
- Institute of Parasitology, Vetsuisse Faculty, University of Bern, Länggass-Strasse 122, 3012 Bern, Switzerland
| | - Ghalia Boubaker
- Institute of Parasitology, Vetsuisse Faculty, University of Bern, Länggass-Strasse 122, 3012 Bern, Switzerland
| | - Yosra Amdouni
- Institute of Parasitology, Vetsuisse Faculty, University of Bern, Länggass-Strasse 122, 3012 Bern, Switzerland
- Laboratoire de Parasitologie, Institution de la Recherche et de l'Enseignement Supérieur Agricoles, Université de la Manouba, École Nationale de Médecine Vétérinaire de Sidi Thabet, Sidi Thabet 2020, Tunisia
| | - Andrew Hemphill
- Institute of Parasitology, Vetsuisse Faculty, University of Bern, Länggass-Strasse 122, 3012 Bern, Switzerland
| | - Julien Furrer
- Department of Chemistry, Biochemistry and Pharmaceutical Sciences, University of Bern, Freiestrasse 3, 3012 Bern, Switzerland
| | - Emilia Păunescu
- Department of Chemistry, Biochemistry and Pharmaceutical Sciences, University of Bern, Freiestrasse 3, 3012 Bern, Switzerland
| |
Collapse
|
3
|
Rentschler M, Schmid MA, Frey W, Tschierlei S, Karnahl M. Multidentate Phenanthroline Ligands Containing Additional Donor Moieties and Their Resulting Cu(I) and Ru(II) Photosensitizers: A Comparative Study. Inorg Chem 2020; 59:14762-14771. [PMID: 32212646 DOI: 10.1021/acs.inorgchem.9b03687] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
To bind or not to bind: Driven by the motivation to increase the (photo)stability of traditional Cu(I) photosensitizers, multidentate diimine ligands, which contain two additional donor sites, were designed. To this end, a systematic series of four 1,10-phenanthroline ligands with either OR or SR (R = iPr or Ph) donor groups at the 2 and 9 positions and their resulting hetero- and homoleptic Cu(I) complexes were prepared. In addition, the related Ru(II) complexes were also synthesized to study the effect of another metal center. In the following, a combination of NMR spectroscopy and X-ray analysis was used to evaluate the impact of the additional donor moieties on the coordination behavior. Most remarkably, for the homoleptic bis(diimine)copper(I) complexes, a pentacoordinated copper center, corresponding to a (4 + 1)-fold coordination mode, was found in the solid state. This additional binding is the first indication that the extra donor might also occupy a free coordination site in the excited-state complex, modifying the nature of the excited states and their respective deactivation processes. Therefore, the electrochemical and photophysical properties of all novel complexes (in total 13) were studied in detail to assess the potential of these photosensitizers for future applications within solar energy conversion schemes. Finally, the photostabilities and a potential degradation mechanism were analyzed for representative samples.
Collapse
Affiliation(s)
- Martin Rentschler
- Institute of Organic Chemistry, University of Stuttgart, Pfaffenwaldring 55, 70569 Stuttgart, Germany
| | - Marie-Ann Schmid
- Institute of Inorganic Chemistry I, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm, Germany
| | - Wolfgang Frey
- Institute of Organic Chemistry, University of Stuttgart, Pfaffenwaldring 55, 70569 Stuttgart, Germany
| | - Stefanie Tschierlei
- Institute of Inorganic Chemistry I, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm, Germany
| | - Michael Karnahl
- Institute of Organic Chemistry, University of Stuttgart, Pfaffenwaldring 55, 70569 Stuttgart, Germany
| |
Collapse
|
4
|
Mede T, Jäger M, Schubert US. "Chemistry-on-the-complex": functional Ru II polypyridyl-type sensitizers as divergent building blocks. Chem Soc Rev 2018; 47:7577-7627. [PMID: 30246196 DOI: 10.1039/c8cs00096d] [Citation(s) in RCA: 65] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Ruthenium polypyridyl type complexes are potent photoactive compounds, and have found - among others - a broad range of important applications in the fields of biomedical diagnosis and phototherapy, energy conversion schemes such as dye-sensitized solar cells (DSSCs) and molecular assemblies for tailored photo-initiated processes. In this regard, the linkage of RuII polypyridyl-type complexes with specific functional moieties is highly desirable to enhance their inherent photophysical properties, e.g., with a targeting function to achieve cell selectivity, or with a dye or redox-active subunits for energy- and electron-transfer. However, the classical approach of performing ligand syntheses first and the formation of Ru complexes in the last steps imposes synthetic limitations with regard to tolerating functional groups or moieties as well as requiring lengthy convergent routes. Alternatively, the diversification of Ru complexes after coordination (termed "chemistry-on-the-complex") provides an elegant complementary approach. In addition to the Click chemistry concept, the rapidly developing synthesis and purification methodologies permit the preparation of Ru conjugates via amidation, alkylation and cross-coupling reactions. In this regard, recent developments in chromatography shifted the limits of purification, e.g., by using new commercialized surface-modified silica gels and automated instrumentation. This review provides detailed insights into applying the "chemistry-on-the-complex" concept, which is believed to stimulate the modular preparation of unpreceded molecular assemblies as well as functional materials based on Ru-based building blocks, including combinatorial approaches.
Collapse
Affiliation(s)
- Tina Mede
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstraße 10, 07743 Jena, Germany.
| | | | | |
Collapse
|
5
|
Beauvilliers EE, Malewschik T, Meyer GJ. Alcohol‐Based Sensitizer–Semiconductor Linkages Towards Improved Interfacial Electron Transfer Kinetics. CHEMPHOTOCHEM 2017. [DOI: 10.1002/cptc.201700040] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Evan E. Beauvilliers
- Department of Chemistry The University of North Carolina at Chapel Hill 123 South Road Chapel Hill North Carolina 27599-3290 USA
| | - Talita Malewschik
- Department of Chemistry The University of North Carolina at Chapel Hill 123 South Road Chapel Hill North Carolina 27599-3290 USA
| | - Gerald J. Meyer
- Department of Chemistry The University of North Carolina at Chapel Hill 123 South Road Chapel Hill North Carolina 27599-3290 USA
| |
Collapse
|
6
|
Queyriaux N, Andreiadis ES, Torelli S, Pecaut J, Veldkamp BS, Margulies EA, Wasielewski MR, Chavarot-Kerlidou M, Artero V. CuAAC-based assembly and characterization of a ruthenium-copper dyad containing a diimine-dioxime ligand framework. Faraday Discuss 2017; 198:251-261. [PMID: 28276542 DOI: 10.1039/c6fd00204h] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The design of molecular dyads combining a light-harvesting unit with an electroactive centre is highly demanded in the field of artificial photosynthesis. The versatile Copper-catalyzed Azide-Alkyne Cycloaddition (CuAAC) procedure was employed to assemble a ruthenium tris-diimine unit to an unprecedented azide-substituted copper diimine-dioxime moiety. The resulting RuIICuII dyad 4 was characterized by electrochemistry, 1H NMR, EPR, UV-visible absorption, steady-state fluorescence and transient absorption spectroscopies. Photoinduced electron transfer from the ruthenium to the copper centre upon light-activation in the presence of a sacrificial electron donor was established thanks to EPR-monitored photolysis experiments, opening interesting perspectives for photocatalytic applications.
Collapse
Affiliation(s)
- Nicolas Queyriaux
- Laboratoire de Chimie et Biologie des Métaux, Univ. Grenoble Alpes, CNRS UMR 5249, CEA, 17 rue des martyrs, F-38054, Grenoble Cedex 9, France.
| | | | | | | | | | | | | | | | | |
Collapse
|
7
|
Sartor V, Irvoas J, Bordeau G, Chouini-Lalanne N. Multivalent Azide-Functionalized Polypyridyl Ruthenium Complexes and Their DNA Conjugates through Click Chemistry. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201700174] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Valerie Sartor
- Laboratoire des IMRCP; Université de Toulouse, CNRS UMR 5623, Université Paul Sabatier; 118 route de Narbonne 31062 Toulouse Cedex 9 France
| | - Joris Irvoas
- Laboratoire des IMRCP; Université de Toulouse, CNRS UMR 5623, Université Paul Sabatier; 118 route de Narbonne 31062 Toulouse Cedex 9 France
| | - Guillaume Bordeau
- Laboratoire des IMRCP; Université de Toulouse, CNRS UMR 5623, Université Paul Sabatier; 118 route de Narbonne 31062 Toulouse Cedex 9 France
| | - Nadia Chouini-Lalanne
- Laboratoire des IMRCP; Université de Toulouse, CNRS UMR 5623, Université Paul Sabatier; 118 route de Narbonne 31062 Toulouse Cedex 9 France
| |
Collapse
|
8
|
Braumüller M, Staniszewska M, Guthmuller J, Rau S. CLICK 'n' Sleep: Light-Switch Behavior of Triazole-Containing Tris(bipyridyl)ruthenium Complexes. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201600964] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Markus Braumüller
- Anorganische Chemie I; Universität Ulm; Albert-Einstein-Allee 11 89081 Ulm Germany
| | - Magdalena Staniszewska
- Faculty of Applied Physics and Mathematics; Gdańsk University of Technology; Narutowicza 11/12 80-233 Gdańsk Poland
| | - Julien Guthmuller
- Faculty of Applied Physics and Mathematics; Gdańsk University of Technology; Narutowicza 11/12 80-233 Gdańsk Poland
| | - Sven Rau
- Anorganische Chemie I; Universität Ulm; Albert-Einstein-Allee 11 89081 Ulm Germany
| |
Collapse
|
9
|
Sorsche D, Rommel SA, Rau S. Functional Dimming of Pincer-Shaped Bibenzimidazole-Ruthenium(II) Complexes with Improved Anion-Sensitive Luminescence. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201501472] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
10
|
Zabarska N, Stumper A, Rau S. CuAAC click reactions for the design of multifunctional luminescent ruthenium complexes. Dalton Trans 2016; 45:2338-51. [DOI: 10.1039/c5dt04599a] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
CuAAC (Cu(i) catalyzed azide–alkyne cycloaddition) click chemistry has emerged as a versatile tool in the development of photoactive ruthenium complexes with multilateral potential applicability. Three general concepts for their synthesis and selected applications are discussed.
Collapse
Affiliation(s)
- Natalia Zabarska
- Institute of Inorganic Chemistry I
- Ulm University
- 89081 Ulm
- Germany
| | - Anne Stumper
- Institute of Inorganic Chemistry I
- Ulm University
- 89081 Ulm
- Germany
| | - Sven Rau
- Institute of Inorganic Chemistry I
- Ulm University
- 89081 Ulm
- Germany
| |
Collapse
|
11
|
Lefebvre JF, Saadallah D, Traber P, Kupfer S, Gräfe S, Dietzek B, Baussanne I, De Winter J, Gerbaux P, Moucheron C, Chavarot-Kerlidou M, Demeunynck M. Synthesis of three series of ruthenium tris-diimine complexes containing acridine-based π-extended ligands using an efficient “chemistry on the complex” approach. Dalton Trans 2016; 45:16298-16308. [DOI: 10.1039/c6dt02944b] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Novel multi-step chemistry on the complex strategy.
Collapse
|
12
|
Zabarska N, Sorsche D, Heinemann FW, Glump S, Rau S. Towards Ruthenium-Based Building Blocks for CuAAC Click Reactions: Challenges in Generating Ruthenium(II) Polypyridine Alkynes. Eur J Inorg Chem 2015. [DOI: 10.1002/ejic.201500630] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
13
|
Braumüller M, Sorsche D, Wunderlin M, Rau S. Modular Synthesis of Elongated Phosphonate Bipyridines. European J Org Chem 2015. [DOI: 10.1002/ejoc.201500641] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
|