1
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Chong J, Benchohra A, Besnard C, Guénée L, Rosspeintner A, Cruz CM, Jiménez JR, Piguet C. Taming 2,2'-biimidazole ligands in trivalent chromium complexes. Dalton Trans 2024; 53:15801-15814. [PMID: 39011611 PMCID: PMC11443315 DOI: 10.1039/d4dt01608d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2024] [Accepted: 07/04/2024] [Indexed: 07/17/2024]
Abstract
Complete or partial replacement of well-known five-membered chelating 2,2'-bipyridine (bipy) or 1,10-phenanthroline (phen) ligands with analogous didentate 2,2'-biimidazole (H2biim) provides novel perspectives for exploiting the latter pH-tuneable bridging unit for connecting inert trivalent chromium with cationic partners. The most simple homoleptic complex [Cr(H2biim)3]3+ and its stepwise deprotonated analogues are only poorly soluble in most solvents and their characterization is limited to some solid-state structures, in which the pseudo-octahedral [CrN6] units are found to be intermolecularly connected via peripheral N-H⋯X hydrogen bonds. Moreover, the associated high-energy stretching N-H vibrations drastically quench the targeted near infrared (NIR) CrIII-based phosphorescence, which makes these homoleptic building blocks incompatible with the design of molecular-based luminescent assemblies. Restricting the number of bound 2,2'-biimidazole ligands to a single unit in the challenging heteroleptic [Cr(phen)2(Hxbiim)](1+x)+ (x = 2-0) complexes overcomes the latter limitations and allows (i) the synthesis and characterization of these [CrN6] chromophores in the solid state and in solution, (ii) the stepwise and controlled deprotonation of the bound 2,2'-biimidazole ligand and (iii) the implementation of Cr-centered phosphorescence with energies, lifetimes and quantum yields adapted for using the latter chromophores as sensitizers in promising 'complex-as-ligand' strategies.
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Affiliation(s)
- Julien Chong
- Department of Inorganic and Analytical Chemistry, University of Geneva, 30 quai E. Ansermet, CH-1211 Geneva 4, Switzerland.
| | - Amina Benchohra
- Department of Inorganic and Analytical Chemistry, University of Geneva, 30 quai E. Ansermet, CH-1211 Geneva 4, Switzerland.
- Laboratoire CEMCA UMR, CNRS 6521, UFR Sciences and Techniques, 6, avenue Victor Le Gorgeu, 29238 Brest Cedex 3, France
| | - Céline Besnard
- Laboratory of Crystallography, University of Geneva, 24 quai E. Ansermet, CH-1211 Geneva 4, Switzerland
| | - Laure Guénée
- Laboratory of Crystallography, University of Geneva, 24 quai E. Ansermet, CH-1211 Geneva 4, Switzerland
| | - Arnulf Rosspeintner
- Department of Physical Chemistry, University of Geneva, 30 quai E. Ansermet, CH-1211 Geneva 4, Switzerland
| | - Carlos M Cruz
- Department of Organic Chemistry, Unidad de Excelencia de Química (UEQ), University of Granada, Avda. Fuente Nueva s/n, 18071 Granada, Spain
| | - Juan-Ramón Jiménez
- Departamento de Química Inorgánica, Facultad de Ciencias, Universidad de Granada and Unidad de Excelencia en Quımica (UEQ), Avda. Fuente Nueva s/n, 18071 Granada, Spain
| | - Claude Piguet
- Department of Inorganic and Analytical Chemistry, University of Geneva, 30 quai E. Ansermet, CH-1211 Geneva 4, Switzerland.
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2
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Trippmacher S, Demeshko S, Prescimone A, Meyer F, Wenger OS, Wang C. Ferromagnetically Coupled Chromium(III) Dimer Shows Luminescence and Sensitizes Photon Upconversion. Chemistry 2024; 30:e202400856. [PMID: 38523568 DOI: 10.1002/chem.202400856] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2024] [Revised: 03/23/2024] [Accepted: 03/25/2024] [Indexed: 03/26/2024]
Abstract
There has been much progress on mononuclear chromium(III) complexes featuring luminescence and photoredox activity, but dinuclear chromium(III) complexes have remained underexplored in these contexts until now. We identified a tridentate chelate ligand able to accommodate both meridional and facial coordination of chromium(III), to either access a mono- or a dinuclear chromium(III) complex depending on reaction conditions. This chelate ligand causes tetragonally distorted primary coordination spheres around chromium(III) in both complexes, entailing comparatively short excited-state lifetimes in the range of 400 to 800 ns in solution at room temperature and making photoluminescence essentially oxygen insensitive. The two chromium(III) ions in the dimer experience ferromagnetic exchange interactions that result in a high spin (S=3) ground state with a coupling constant of +9.3 cm-1. Photoinduced energy transfer from the luminescent ferromagnetically coupled dimer to an anthracene derivative results in sensitized triplet-triplet annihilation upconversion. Based on these proof-of-principle studies, dinuclear chromium(III) complexes seem attractive for the development of fundamentally new types of photophysics and photochemistry enabled by magnetic exchange interactions.
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Affiliation(s)
- Simon Trippmacher
- Department of Chemistry, University of Basel, St. Johanns-Ring 19, 4056, Basel, Switzerland
| | - Serhiy Demeshko
- Institute of Inorganic Chemistry, University of Göttingen, Tammannstraße 4, 37077, Göttingen, Germany
| | - Alessandro Prescimone
- Department of Chemistry, BPR 1096, University of Basel, Mattenstrasse 24a, 4058, Basel, Switzerland
| | - Franc Meyer
- Institute of Inorganic Chemistry, University of Göttingen, Tammannstraße 4, 37077, Göttingen, Germany
| | - Oliver S Wenger
- Department of Chemistry, University of Basel, St. Johanns-Ring 19, 4056, Basel, Switzerland
| | - Cui Wang
- Department of Chemistry, University of Basel, St. Johanns-Ring 19, 4056, Basel, Switzerland
- Department of Biology and Chemistry, Osnabrück University, Barbarastraße 7, 49076, Osnabrück, Germany
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3
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Benchohra A, Chong J, Cruz CM, Besnard C, Guénée L, Rosspeintner A, Piguet C. Additional Insights into the Design of Cr(III) Phosphorescent Emitters Using 6-Membered Chelate Ring Bis(imidazolyl) Didentate Ligands. Inorg Chem 2024; 63:3617-3629. [PMID: 38206181 DOI: 10.1021/acs.inorgchem.3c03422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2024]
Abstract
The interest in Cr(III) complexes has been renewed over the past decades for building practical guidelines in the design of efficient earth-abundant phosphorescent near-infrared emitters. In that context, we report the first family of homoleptic tri(didentate) Cr(III) complexes [CrL3]3+ based on polyaromatic ligands inducing 6-membered chelate rings, namely, the bis(1-methylimidazol-2-yl)ketone (L = bik), bis(1-methylimidazol-2-yl)methane (L = bim), and bis(1-methylimidazol-2-yl)ethane (L = bie) ligands. The programmed close-to-perfect octahedral microsymmetry of {CrIIIN6} chromophores found in [Cr(bik)3](OTf)3 (1), [Cr(bim)3](OTf)3 (2), and [Cr(bie)3](BF4)3 (3) ensures a ligand-field strength large enough to induce intense and long-lived Cr-based phosphorescence. Impressive excited-state lifetimes (5.0-8.2 ms) were obtained at low temperatures for the [Cr(L)3]3+ series. Additionally, the photoluminescent quantum yield climbs to 0.8% for compound 1 in deaerated solutions. Moreover, the photophysical features of the three homoleptic complexes are barely influenced by the presence of dioxygen presumably because of the poor overlap between the Cr-based phosphorescence spectra (ca. 14100 cm-1) and the 1Σg+ ← 3Σg- transition in the absorption spectrum of dioxygen (13100 cm-1). The multiredox electrochemical pattern of 1 is evidenced by cyclic voltammetry as well as its strong photooxidant behavior. The pH sensitivity of 2 and 3 luminescence is discussed, along with the reactivity of their β-diketiminate derivatives.
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Affiliation(s)
- Amina Benchohra
- Department of Inorganic Analytical and Applied Chemistry, University of Geneva, 30 quai E. Ansermet, CH-1211 Geneva 4, Switzerland
| | - Julien Chong
- Department of Inorganic Analytical and Applied Chemistry, University of Geneva, 30 quai E. Ansermet, CH-1211 Geneva 4, Switzerland
| | - Carlos M Cruz
- Department of Organic Chemistry, Unidad de Excelencia de Química (UEQ) University of Granada, Avenida Fuente Nueva, ES-18071 Granada, Spain
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
| | - Céline Besnard
- Laboratory of Crystallography, University of Geneva, 24 quai E. Ansermet, CH-1211 Geneva 4, Switzerland
| | - Laure Guénée
- Laboratory of Crystallography, University of Geneva, 24 quai E. Ansermet, CH-1211 Geneva 4, Switzerland
| | - Arnulf Rosspeintner
- Department of Physical Chemistry, University of Geneva, 30 quai E. Ansermet, CH-1211 Geneva 4, Switzerland
| | - Claude Piguet
- Department of Inorganic Analytical and Applied Chemistry, University of Geneva, 30 quai E. Ansermet, CH-1211 Geneva 4, Switzerland
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4
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Kitzmann WR, Hunger D, Reponen APM, Förster C, Schoch R, Bauer M, Feldmann S, van Slageren J, Heinze K. Electronic Structure and Excited-State Dynamics of the NIR-II Emissive Molybdenum(III) Analogue to the Molecular Ruby. Inorg Chem 2023; 62:15797-15808. [PMID: 37718553 DOI: 10.1021/acs.inorgchem.3c02186] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/19/2023]
Abstract
Photoactive chromium(III) complexes saw a conceptual breakthrough with the discovery of the prototypical molecular ruby mer-[Cr(ddpd)2]3+ (ddpd = N,N'-dimethyl-N,N'-dipyridin-2-ylpyridine-2,6-diamine), which shows intense long-lived near-infrared (NIR) phosphorescence from metal-centered spin-flip states. In contrast to the numerous studies on chromium(III) photophysics, only 10 luminescent molybdenum(III) complexes have been reported so far. Here, we present the synthesis and characterization of mer-MoX3(ddpd) (1, X = Cl; 2, X = Br) and cisfac-[Mo(ddpd)2]3+ (cisfac-[3]3+), an isomeric heavy homologue of the prototypical molecular ruby. For cisfac-[3]3+, we found strong zero-field splitting using magnetic susceptibility measurements and electron paramagnetic resonance spectroscopy. Electronic spectra covering the spin-forbidden transitions show that the spin-flip states in mer-1, mer-2, and cisfac-[3]3+ are much lower in energy than those in comparable chromium(III) compounds. While all three complexes show weak spin-flip phosphorescence in NIR-II, the emission of cisfac-[3]3+ peaking at 1550 nm is particularly low in energy. Femtosecond transient absorption spectroscopy reveals a short excited-state lifetime of 1.4 ns, 6 orders of magnitude shorter than that of mer-[Cr(ddpd)2]3+. Using density functional theory and ab initio multireference calculations, we break down the reasons for this disparity and derive principles for the design of future stable photoactive molybdenum(III) complexes.
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Affiliation(s)
- Winald R Kitzmann
- Department of Chemistry, Johannes Gutenberg University of Mainz, Duesbergweg 10-14, 55128 Mainz, Germany
- Rowland Institute, Harvard University, 100 Edwin H. Land Boulevard, Cambridge, Massachusetts 02142, United States
| | - David Hunger
- Institute of Physical Chemistry and Center for Integrated Quantum Science and Technology, University of Stuttgart, Pfaffenwaldring 55, 70569 Stuttgart, Germany
| | - Antti-Pekka M Reponen
- Rowland Institute, Harvard University, 100 Edwin H. Land Boulevard, Cambridge, Massachusetts 02142, United States
| | - Christoph Förster
- Department of Chemistry, Johannes Gutenberg University of Mainz, Duesbergweg 10-14, 55128 Mainz, Germany
| | - Roland Schoch
- Faculty of Science, Chemistry Department and Centre for Sustainable Systems Design, Paderborn University, 33098 Paderborn, Germany
| | - Matthias Bauer
- Faculty of Science, Chemistry Department and Centre for Sustainable Systems Design, Paderborn University, 33098 Paderborn, Germany
| | - Sascha Feldmann
- Rowland Institute, Harvard University, 100 Edwin H. Land Boulevard, Cambridge, Massachusetts 02142, United States
| | - Joris van Slageren
- Institute of Physical Chemistry and Center for Integrated Quantum Science and Technology, University of Stuttgart, Pfaffenwaldring 55, 70569 Stuttgart, Germany
| | - Katja Heinze
- Department of Chemistry, Johannes Gutenberg University of Mainz, Duesbergweg 10-14, 55128 Mainz, Germany
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5
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Frei A, Elliott AG, Kan A, Dinh H, Bräse S, Bruce AE, Bruce MR, Chen F, Humaidy D, Jung N, King AP, Lye PG, Maliszewska HK, Mansour AM, Matiadis D, Muñoz MP, Pai TY, Pokhrel S, Sadler PJ, Sagnou M, Taylor M, Wilson JJ, Woods D, Zuegg J, Meyer W, Cain AK, Cooper MA, Blaskovich MAT. Metal Complexes as Antifungals? From a Crowd-Sourced Compound Library to the First In Vivo Experiments. JACS AU 2022; 2:2277-2294. [PMID: 36311838 PMCID: PMC9597602 DOI: 10.1021/jacsau.2c00308] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Revised: 07/01/2022] [Accepted: 07/27/2022] [Indexed: 06/16/2023]
Abstract
There are currently fewer than 10 antifungal drugs in clinical development, but new fungal strains that are resistant to most current antifungals are spreading rapidly across the world. To prevent a second resistance crisis, new classes of antifungal drugs are urgently needed. Metal complexes have proven to be promising candidates for novel antibiotics, but so far, few compounds have been explored for their potential application as antifungal agents. In this work, we report the evaluation of 1039 metal-containing compounds that were screened by the Community for Open Antimicrobial Drug Discovery (CO-ADD). We show that 20.9% of all metal compounds tested have antimicrobial activity against two representative Candida and Cryptococcus strains compared with only 1.1% of the >300,000 purely organic molecules tested through CO-ADD. We identified 90 metal compounds (8.7%) that show antifungal activity while not displaying any cytotoxicity against mammalian cell lines or hemolytic properties at similar concentrations. The structures of 21 metal complexes that display high antifungal activity (MIC ≤1.25 μM) are discussed and evaluated further against a broad panel of yeasts. Most of these have not been previously tested for antifungal activity. Eleven of these metal complexes were tested for toxicity in the Galleria mellonella moth larva model, revealing that only one compound showed signs of toxicity at the highest injected concentration. Lastly, we demonstrated that the organo-Pt(II) cyclooctadiene complex Pt1 significantly reduces fungal load in an in vivo G. mellonella infection model. These findings showcase that the structural and chemical diversity of metal-based compounds can be an invaluable tool in the development of new drugs against infectious diseases.
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Affiliation(s)
- Angelo Frei
- Centre
for Superbug Solutions, Institute for Molecular Bioscience, The University of Queensland, St. Lucia, Queensland4072, Australia
- Department
of Chemistry, Biochemistry & Pharmaceutical Sciences, University of Bern, Freiestrasse 3, 3012Bern, Switzerland
| | - Alysha G. Elliott
- Centre
for Superbug Solutions, Institute for Molecular Bioscience, The University of Queensland, St. Lucia, Queensland4072, Australia
| | - Alex Kan
- Molecular
Mycology Research Laboratory, Centre for Infectious Diseases and Microbiology,
Faculty of Medicine and Health, Sydney Medical School, Westmead Clinical
School, Sydney Institute for Infectious Diseases, Westmead Hospital-Research
and Education Network, Westmead Institute for Medical Research, University of Sydney, Sydney, NSW2145, Australia
| | - Hue Dinh
- School
of Natural Sciences, ARC Centre of Excellence in Synthetic Biology, Macquarie University, Sydney, NSW2109, Australia
| | - Stefan Bräse
- Institute
of Organic Chemistry, Karlsruhe Institute
of Technology, Fritz-Haber-Weg 6, 76131Karlsruhe, Germany
- Institute
of Biological and Chemical Systems - Functional Molecular Systems, Karlsruhe Institute of Technology, 76344Eggenstein-Leopoldshafen, Germany
| | - Alice E. Bruce
- Department
of Chemistry, University of Maine, Orono, Maine04469, United States
| | - Mitchell R. Bruce
- Department
of Chemistry, University of Maine, Orono, Maine04469, United States
| | - Feng Chen
- Department
of Chemistry, University of Warwick, Gibbet Hill Road, CoventryCV4 7AL, U.K.
| | - Dhirgam Humaidy
- Department
of Chemistry, University of Maine, Orono, Maine04469, United States
| | - Nicole Jung
- Karlsruhe
Nano Micro Facility (KNMF), Karlsruhe Institute
of Technology, Hermann-von-Helmholtz-Platz 1, 76344Eggenstein-Leopoldshafen, Germany
- Institute
of Biological and Chemical Systems - Functional Molecular Systems, Karlsruhe Institute of Technology, 76344Eggenstein-Leopoldshafen, Germany
| | - A. Paden King
- Department
of Chemistry and Chemical Biology, Cornell
University, Ithaca, New York14853, United States
| | - Peter G. Lye
- School
of Science and Technology, University of
New England, Armidale, NSW2351, Australia
| | - Hanna K. Maliszewska
- School
of Chemistry, University of East Anglia, Norwich Research Park, NorwichNR4 7TJ, U.K.
| | - Ahmed M. Mansour
- Chemistry
Department, Faculty of Science, Cairo University, Giza12613, Egypt
| | - Dimitris Matiadis
- Institute
of Biosciences & Applications, National
Centre for Scientific Research “Demokritos”, 15310Athens, Greece
| | - María Paz Muñoz
- School
of Chemistry, University of East Anglia, Norwich Research Park, NorwichNR4 7TJ, U.K.
| | - Tsung-Yu Pai
- Molecular
Mycology Research Laboratory, Centre for Infectious Diseases and Microbiology,
Faculty of Medicine and Health, Sydney Medical School, Westmead Clinical
School, Sydney Institute for Infectious Diseases, Westmead Hospital-Research
and Education Network, Westmead Institute for Medical Research, University of Sydney, Sydney, NSW2145, Australia
| | - Shyam Pokhrel
- Department
of Chemistry, University of Maine, Orono, Maine04469, United States
| | - Peter J. Sadler
- Department
of Chemistry, University of Warwick, Gibbet Hill Road, CoventryCV4 7AL, U.K.
| | - Marina Sagnou
- Institute
of Biosciences & Applications, National
Centre for Scientific Research “Demokritos”, 15310Athens, Greece
| | - Michelle Taylor
- School
of Science and Technology, University of
New England, Armidale, NSW2351, Australia
| | - Justin J. Wilson
- Department
of Chemistry and Chemical Biology, Cornell
University, Ithaca, New York14853, United States
| | - Dean Woods
- School
of Science and Technology, University of
New England, Armidale, NSW2351, Australia
| | - Johannes Zuegg
- Centre
for Superbug Solutions, Institute for Molecular Bioscience, The University of Queensland, St. Lucia, Queensland4072, Australia
| | - Wieland Meyer
- Molecular
Mycology Research Laboratory, Centre for Infectious Diseases and Microbiology,
Faculty of Medicine and Health, Sydney Medical School, Westmead Clinical
School, Sydney Institute for Infectious Diseases, Westmead Hospital-Research
and Education Network, Westmead Institute for Medical Research, University of Sydney, Sydney, NSW2145, Australia
| | - Amy K. Cain
- School
of Natural Sciences, ARC Centre of Excellence in Synthetic Biology, Macquarie University, Sydney, NSW2109, Australia
| | - Matthew A. Cooper
- Centre
for Superbug Solutions, Institute for Molecular Bioscience, The University of Queensland, St. Lucia, Queensland4072, Australia
| | - Mark A. T. Blaskovich
- Centre
for Superbug Solutions, Institute for Molecular Bioscience, The University of Queensland, St. Lucia, Queensland4072, Australia
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Doistau B, Jiménez JR, Lawson Daku LM, Piguet C. Complex-as-Ligand Strategy as a Tool for the Design of a Binuclear Nonsymmetrical Chromium(III) Assembly: Near-Infrared Double Emission and Intramolecular Energy Transfer. Inorg Chem 2022; 61:11023-11031. [PMID: 35820089 DOI: 10.1021/acs.inorgchem.2c01940] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The chromium(III) polypyridyl complexes are appealing for their long-lived near-infrared (NIR) emission reaching the millisecond range and for the strong circularly polarized luminescence of their isolated enantiomers. However, harnessing those properties in functional polynuclear CrIII devices remains mainly inaccessible because of the lack of synthetic methods for their design and functionalization. Even the preparation and investigation of most basic nonsymmetrical CrIII dyads exhibiting directional intramolecular intermetallic energy transfer remain unexplored. Taking advantage of the inertness of heteroleptic chromium(III) polypyridyl building blocks, we herein adapt the "complex-as-ligand" strategy, largely used with precious 4d and 5d metals, for the preparation of a binuclear nonsymmetrical CrIII complex (3d metal). The resulting [(phen)2Cr(L)Cr(tpy)]6+ dyad shows dual long-lived NIR emission and a directional intermetallic energy transfer that is controlled by the specific arrangements of the different coordination spheres. This strategy opens a route for building predetermined polynuclear assemblies with this earth-abundant metal.
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Affiliation(s)
- Benjamin Doistau
- Department of Inorganic and Analytical Chemistry, University of Geneva, 30 quai Ernest Ansermet, CH-1211 Geneva 4, Switzerland
| | - Juan-Ramón Jiménez
- Department of Inorganic Chemistry, University of Granada and "Unidad de Excelencia en Química", Avenida Fuentenueva, E-18071 Granada, Spain
| | - Latévi Max Lawson Daku
- Department of Physical Chemistry, University of Geneva, 30 quai Ernest Ansermet, CH-1211 Geneva 4, Switzerland
| | - Claude Piguet
- Department of Inorganic and Analytical Chemistry, University of Geneva, 30 quai Ernest Ansermet, CH-1211 Geneva 4, Switzerland
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7
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Chong J, Besnard C, Cruz CM, Piguet C, Jiménez JR. Heteroleptic mer-[Cr(N ∩N ∩N)(CN) 3] complexes: synthetic challenge, structural characterization and photophysical properties. Dalton Trans 2022; 51:4297-4309. [PMID: 35195140 PMCID: PMC8922558 DOI: 10.1039/d2dt00126h] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The substitution of three water molecules around trivalent chromium in CrBr3·6H2O with the tridentate 2,2′:6′,2′′-terpyridine (tpy), N,N′-dimethyl-N,N′-di(pyridine-2-yl)pyridine-2,6-diamine (ddpd) or 2,6-di(quinolin-8-yl)pyridine (dqp) ligands gives the heteroleptic mer-[Cr(L)Br3] complexes. Stepwise treatments with Ag(CF3SO3) and KCN under microwave irradiations provide mer-[Cr(L)(CN)3] in moderate yields. According to their X-ray crystal structures, the associated six-coordinate meridional [CrN3C3] chromophores increasingly deviate from a pseudo-octahedral arrangement according to L = ddpd ≈ dpq ≪ tpy; a trend in line with the replacement of six-membered with five-membered chelate rings around CrIII. Room-temperature ligand-centered UV-excitation at 18 170 cm−1 (λexc = 350 nm), followed by energy transfer and intersystem crossing eventually yield microsecond metal-centered Cr(2E → 4A2) phosphorescence in the red to near infrared domain 13 150–12 650 cm−1 (760 ≤ λem ≤ 790 nm). Decreasing the temperature to liquid nitrogen (77 K) extends the emission lifetimes to reach the millisecond regime with a record of 4.02 ms for mer-[Cr(dqp)(CN)3] in frozen acetonitrile. The heteroleptic mer-[Cr(L)(CN)3] (L = tpy, ddpd, dqp) complexes with their C2v-symmetrical [CrC3N3] luminescent chromophores represent the missing links between pseudo-octahedral [CrN6] and [CrC6] units found in their well-known homoleptic parents.![]()
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Affiliation(s)
- Julien Chong
- Department of Inorganic and Analytical Chemistry, University of Geneva, 30 quai E. Ansermet, CH-1211 Geneva 4, Switzerland.
| | - Céline Besnard
- Laboratory of Crystallography, University of Geneva, 24 quai E. Ansermet, CH-1211 Geneva 4, Switzerland
| | - Carlos M Cruz
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
| | - Claude Piguet
- Department of Inorganic and Analytical Chemistry, University of Geneva, 30 quai E. Ansermet, CH-1211 Geneva 4, Switzerland.
| | - Juan-Ramón Jiménez
- Department of Inorganic and Analytical Chemistry, University of Geneva, 30 quai E. Ansermet, CH-1211 Geneva 4, Switzerland. .,Department of Inorganic Chemistry, University of Granada and "Unidad de Excelencia en Química" (UEQ), Avda. Fuentenueva, E-18071 Granada, España.
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8
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Abstract
In molecular photochemistry, charge-transfer emission is well understood and widely exploited. In contrast, luminescent metal-centered transitions only came into focus in recent years. This gave rise to strongly phosphorescent CrIII complexes with a d3 electronic configuration featuring luminescent metal-centered excited states which are characterized by the flip of a single spin. These so-called spin-flip emitters possess unique properties and require different design strategies than traditional charge-transfer phosphors. In this review, we give a brief introduction to ligand field theory as a framework to understand this phenomenon and outline prerequisites for efficient spin-flip emission including ligand field strength, symmetry, intersystem crossing and common deactivation pathways using CrIII complexes as instructive examples. The recent progress and associated challenges of tuning the energies of emissive excited states and of emerging applications of the unique photophysical properties of spin-flip emitters are discussed. Finally, we summarize the current state-of-the-art and challenges of spin-flip emitters beyond CrIII with d2, d3, d4 and d8 electronic configuration, where we mainly cover pseudooctahedral molecular complexes of V, Mo, W, Mn, Re and Ni, and highlight possible future research opportunities.
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9
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Gong J, Zhang X. Coordination-based circularly polarized luminescence emitters: Design strategy and application in sensing. Coord Chem Rev 2022. [DOI: 10.1016/j.ccr.2021.214329] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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10
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Kitzmann WRR, Ramanan C, Naumann R, Heinze K. Molecular Ruby: Exploring the Excited State Landscape. Dalton Trans 2022; 51:6519-6525. [DOI: 10.1039/d2dt00569g] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The discovery of the highly NIR-luminescent Molecular Ruby [Cr(ddpd)2]3+ 13+ (ddpd = N,N’-dimethyl-N,N’-dipyridine-2-ylpyridine-2,6-diamine) has been a milestone in the development of earth-abundant luminophors and has led to important new impulses...
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11
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Reichenauer F, Wang C, Förster C, Boden P, Ugur N, Báez-Cruz R, Kalmbach J, Carrella LM, Rentschler E, Ramanan C, Niedner-Schatteburg G, Gerhards M, Seitz M, Resch-Genger U, Heinze K. Strongly Red-Emissive Molecular Ruby [Cr(bpmp) 2] 3+ Surpasses [Ru(bpy) 3] 2. J Am Chem Soc 2021; 143:11843-11855. [PMID: 34296865 DOI: 10.1021/jacs.1c05971] [Citation(s) in RCA: 44] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Gaining chemical control over the thermodynamics and kinetics of photoexcited states is paramount to an efficient and sustainable utilization of photoactive transition metal complexes in a plethora of technologies. In contrast to energies of charge transfer states described by spatially separated orbitals, the energies of spin-flip states cannot straightforwardly be predicted as Pauli repulsion and the nephelauxetic effect play key roles. Guided by multireference quantum chemical calculations, we report a novel highly luminescent spin-flip emitter with a quantum chemically predicted blue-shifted luminescence. The spin-flip emission band of the chromium complex [Cr(bpmp)2]3+ (bpmp = 2,6-bis(2-pyridylmethyl)pyridine) shifted to higher energy from ca. 780 nm observed for known highly emissive chromium(III) complexes to 709 nm. The photoluminescence quantum yields climb to 20%, and very long excited state lifetimes in the millisecond range are achieved at room temperature in acidic D2O solution. Partial ligand deuteration increases the quantum yield to 25%. The high excited state energy of [Cr(bpmp)2]3+ and its facile reduction to [Cr(bpmp)2]2+ result in a high excited state redox potential. The ligand's methylene bridge acts as a Brønsted acid quenching the luminescence at high pH. Combined with a pH-insensitive chromium(III) emitter, ratiometric optical pH sensing is achieved with single wavelength excitation. The photophysical and ground state properties (quantum yield, lifetime, redox potential, and acid/base) of this spin-flip complex incorporating an earth-abundant metal surpass those of the classical precious metal [Ru(α-diimine)3]2+ charge transfer complexes, which are commonly employed in optical sensing and photo(redox) catalysis, underlining the bright future of these molecular ruby analogues.
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Affiliation(s)
- Florian Reichenauer
- Department of Chemistry, Johannes Gutenberg University of Mainz, Duesbergweg 10-14, 55128 Mainz, Germany
| | - Cui Wang
- Division Biophotonics, Federal Institute for Materials Research and Testing (BAM), Richard-Willstätter-Str. 11, 12489 Berlin, Germany.,Institut für Chemie und Biochemie, Freie Universität Berlin, Arnimallee 22, 14195 Berlin, Germany
| | - Christoph Förster
- Department of Chemistry, Johannes Gutenberg University of Mainz, Duesbergweg 10-14, 55128 Mainz, Germany
| | - Pit Boden
- Department of Chemistry and Research Center Optimas, University Kaiserslautern, Erwin-Schrödinger-Straße, 67663 Kaiserslautern, Germany
| | - Naz Ugur
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - Ricardo Báez-Cruz
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - Jens Kalmbach
- Institute of Inorganic Chemistry, University of Tübingen, Auf der Morgenstelle 18, 72076 Tübingen, Germany
| | - Luca M Carrella
- Department of Chemistry, Johannes Gutenberg University of Mainz, Duesbergweg 10-14, 55128 Mainz, Germany
| | - Eva Rentschler
- Department of Chemistry, Johannes Gutenberg University of Mainz, Duesbergweg 10-14, 55128 Mainz, Germany
| | - Charusheela Ramanan
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - Gereon Niedner-Schatteburg
- Department of Chemistry and Research Center Optimas, University Kaiserslautern, Erwin-Schrödinger-Straße, 67663 Kaiserslautern, Germany
| | - Markus Gerhards
- Department of Chemistry and Research Center Optimas, University Kaiserslautern, Erwin-Schrödinger-Straße, 67663 Kaiserslautern, Germany
| | - Michael Seitz
- Institute of Inorganic Chemistry, University of Tübingen, Auf der Morgenstelle 18, 72076 Tübingen, Germany
| | - Ute Resch-Genger
- Division Biophotonics, Federal Institute for Materials Research and Testing (BAM), Richard-Willstätter-Str. 11, 12489 Berlin, Germany
| | - Katja Heinze
- Department of Chemistry, Johannes Gutenberg University of Mainz, Duesbergweg 10-14, 55128 Mainz, Germany
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12
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Lehr M, Paschelke T, Bendt V, Petersen A, Pietsch L, Harders P, McConnell AJ. Copper‐Free One‐Pot Sonogashira‐Type Coupling for the Efficient Preparation of Symmetric Diarylalkyne Ligands for Metal‐Organic Cages**. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100275] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Marc Lehr
- Otto Diels Institute of Organic Chemistry Christian-Albrechts-Universität zu Kiel Otto-Hahn-Platz 4 Kiel 24098 Germany
| | - Tobias Paschelke
- Otto Diels Institute of Organic Chemistry Christian-Albrechts-Universität zu Kiel Otto-Hahn-Platz 4 Kiel 24098 Germany
| | - Victoria Bendt
- Otto Diels Institute of Organic Chemistry Christian-Albrechts-Universität zu Kiel Otto-Hahn-Platz 4 Kiel 24098 Germany
| | - André Petersen
- Otto Diels Institute of Organic Chemistry Christian-Albrechts-Universität zu Kiel Otto-Hahn-Platz 4 Kiel 24098 Germany
| | - Lorenz Pietsch
- Otto Diels Institute of Organic Chemistry Christian-Albrechts-Universität zu Kiel Otto-Hahn-Platz 4 Kiel 24098 Germany
| | - Patrick Harders
- Otto Diels Institute of Organic Chemistry Christian-Albrechts-Universität zu Kiel Otto-Hahn-Platz 4 Kiel 24098 Germany
| | - Anna J. McConnell
- Otto Diels Institute of Organic Chemistry Christian-Albrechts-Universität zu Kiel Otto-Hahn-Platz 4 Kiel 24098 Germany
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13
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Jiménez JR, Doistau B, Poncet M, Piguet C. Heteroleptic trivalent chromium in coordination chemistry: Novel building blocks for addressing old challenges in multimetallic luminescent complexes. Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2020.213750] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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14
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Structural diversity and luminescent properties of coordination complexes obtained from trivalent lanthanide ions with the ligands: tris((1H-benzo[d]imidazol-2-yl)methyl)amine and 2,6-bis(1H-benzo[d]imidazol-2-yl)pyridine. Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2020.213587] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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15
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Doistau B, Jiménez JR, Piguet C. Beyond Chiral Organic (p-Block) Chromophores for Circularly Polarized Luminescence: The Success of d-Block and f-Block Chiral Complexes. Front Chem 2020; 8:555. [PMID: 32850617 PMCID: PMC7399180 DOI: 10.3389/fchem.2020.00555] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Accepted: 05/29/2020] [Indexed: 12/16/2022] Open
Abstract
Chiral molecules are essential for the development of advanced technological applications in spintronic and photonic. The best systems should produce large circularly polarized luminescence (CPL) as estimated by their dissymmetry factor (g lum), which can reach the maximum values of -2 ≤ g lum ≤ 2 when either pure right- or left-handed polarized light is emitted after standard excitation. For matching this requirement, theoretical considerations indicate that optical transitions with large magnetic and weak electric transition dipole moments represent the holy grail of CPL. Because of their detrimental strong and allowed electric dipole transitions, popular chiral emissive organic molecules display generally moderate dissymmetry factors (10-5 ≤ g lum ≤ 10-3). However, recent efforts in this field show that g lum can be significantly enhanced when the chiral organic activators are part of chiral supramolecular assemblies or of liquid crystalline materials. At the other extreme, chiral EuIII- and SmIII-based complexes, which possess intra-shell parity-forbidden electric but allowed magnetic dipole transitions, have yielded the largest dissymmetry factor reported so far with g lum ~ 1.38. Consequently, 4f-based metal complexes with strong CPL are currently the best candidates for potential technological applications. They however suffer from the need for highly pure samples and from considerable production costs. In this context, chiral earth-abundant and cheap d-block metal complexes benefit from a renewed interest according that their CPL signal can be optimized despite the larger covalency displayed by d-block cations compared with 4f-block analogs. This essay thus aims at providing a minimum overview of the theoretical aspects rationalizing circularly polarized luminescence and their exploitation for the design of chiral emissive metal complexes with strong CPL. Beyond the corroboration that f-f transitions are ideal candidates for generating large dissymmetry factors, a special attention is focused on the recent attempts to use chiral CrIII-based complexes that reach values of g lum up to 0.2. This could pave the way for replacing high-cost rare earths with cheap transition metals for CPL applications.
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Affiliation(s)
- Benjamin Doistau
- Department of Inorganic and Analytical Chemistry, University of Geneva, Geneva, Switzerland
| | - Juan-Ramón Jiménez
- Department of Inorganic and Analytical Chemistry, University of Geneva, Geneva, Switzerland
| | - Claude Piguet
- Department of Inorganic and Analytical Chemistry, University of Geneva, Geneva, Switzerland
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16
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Wang L, Song B, Li Y, Gong L, Jiang X, Wang M, Lu S, Hao XQ, Xia Z, Zhang Y, Hla SW, Li X. Self-Assembly of Metallo-Supramolecules under Kinetic or Thermodynamic Control: Characterization of Positional Isomers Using Scanning Tunneling Spectroscopy. J Am Chem Soc 2020; 142:9809-9817. [PMID: 32311259 PMCID: PMC7375329 DOI: 10.1021/jacs.0c03459] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Coordination-driven self-assembly has been extensively employed to construct a variety of discrete structures as a bottom-up strategy. However, mechanistic understanding regarding whether self-assembly is under kinetic or thermodynamic control is less explored. To date, such mechanistic investigation has been limited to distinct, assembled structures. It still remains a formidable challenge to study the kinetic and thermodynamic behavior of self-assembly systems with multiple assembled isomers due to the lack of characterization methods. Herein, we use a stepwise strategy which combined self-recognition and self-assembly processes to construct giant metallo-supramolecules with 8 positional isomers in solution. With the help of ultrahigh-vacuum, low-temperature scanning tunneling microscopy and scanning tunneling spectroscopy, we were able to unambiguously differentiate 14 isomers on the substrate which correspond to 8 isomers in solution. Through measurement of 162 structures, the experimental probability of each isomer was obtained and compared with the theoretical probability. Such a comparison along with density functional theory (DFT) calculation suggested that although both kinetic and thermodynamic control existed in this self-assembly, the increased experimental probabilities of isomers compared to theoretical probabilities should be attributed to thermodynamic control.
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Affiliation(s)
- Lei Wang
- Department of Chemistry, University of South Florida, Tampa, Florida 33620, United States
| | - Bo Song
- Department of Chemistry, University of South Florida, Tampa, Florida 33620, United States
| | - Yiming Li
- Department of Chemistry, University of South Florida, Tampa, Florida 33620, United States
| | - Lele Gong
- Department of Materials Science and Engineering, University of North Texas, Denton, Texas 76203, United States
| | - Xin Jiang
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, Jilin 130012, China
| | - Ming Wang
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, Jilin 130012, China
| | - Shuai Lu
- Department of Chemistry, University of South Florida, Tampa, Florida 33620, United States
- College of Chemistry, Zhengzhou University, Zhengzhou, Henan 450052, China
| | - Xin-Qi Hao
- College of Chemistry, Zhengzhou University, Zhengzhou, Henan 450052, China
| | - Zhenhai Xia
- Department of Materials Science and Engineering, University of North Texas, Denton, Texas 76203, United States
| | - Yuan Zhang
- Nanoscience and Technology Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
- Department of Physics, Old Dominion University, Norfolk, Virginia 23529, United States
| | - Saw Wai Hla
- Nanoscience and Technology Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Xiaopeng Li
- Department of Chemistry, University of South Florida, Tampa, Florida 33620, United States
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17
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Ma X, Suturina EA, Rouzières M, Wilhelm F, Rogalev A, Clérac R, Dechambenoit P. A heteroleptic diradical Cr(iii) complex with extended spin delocalization and large intramolecular magnetic exchange. Chem Commun (Camb) 2020; 56:4906-4909. [PMID: 32239004 DOI: 10.1039/d0cc00548g] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Successive chemical reductions of the heteroleptic complex [(tpy)CrIII(tphz)]3+ (tpy = terpyridine; tphz = tetrapyridophenazine) give rise to the mono- and di-radical redox isomers, [(tpy)CrIII(tphz˙-)]2+ and [(tpy˙-)CrIII(tphz˙-)]+, respectively. As designed, the optimized overlap of the involved magnetic orbitals leads to extremely strong magnetic interactions between the S = 3/2 metal ion and S = 1/2 radical spins, affording well isolated ST = 1 and ST = 1/2 ground states at room temperature.
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Affiliation(s)
- Xiaozhou Ma
- Univ. Bordeaux, CNRS, Centre de Recherche Paul Pascal, UMR 5031, 33600 Pessac, France.
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18
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Doistau B, Jiménez JR, Guerra S, Besnard C, Piguet C. Key Strategy for the Rational Incorporation of Long-Lived NIR Emissive Cr(III) Chromophores into Polymetallic Architectures. Inorg Chem 2020; 59:1424-1435. [PMID: 31909978 DOI: 10.1021/acs.inorgchem.9b03163] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The CrIIIN6 chromophores are particularly appealing for low-energy sensitization via energy transfer processes since they show extremely long excited state lifetimes reaching the millisecond range in the technologically crucial near-infrared domain. However, their properties were barely harnessed in multimetallic structures because of the lack of both monitoring methods and accessible synthetic pathways. We herein report a remedy to monitor and control the formation of CrIII-containing assemblies in solution via the design of a CrIIIN6 inert "complex-as-ligand" that can be included into polymetallic architectures. As a proof of concept, these CrN6 building blocks were reacted in solution with ZnII or FeII to give extended trinuclear linear Cr-M-Cr assemblies, the structure of which could be addressed by NMR spectroscopy despite the presence of two slowly relaxing CrIII paramagnetic centers. In addition to long CrIII excited state lifetimes and weak sensitivity to oxygen quenching, these polymetallic assemblies display controlled CrIII to MII energy transfers, which pave the way for use of the "complex-as-ligand" strategy for introducing photophysically active CrIII probes into light-converting polymetallic devices.
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Affiliation(s)
- Benjamin Doistau
- Department of Inorganic and Analytical Chemistry , University of Geneva , 30 quai Ernest Ansermet , CH-1211 Geneva 4 , Switzerland
| | - Juan-Ramón Jiménez
- Department of Inorganic and Analytical Chemistry , University of Geneva , 30 quai Ernest Ansermet , CH-1211 Geneva 4 , Switzerland
| | - Sebastiano Guerra
- Department of Inorganic and Analytical Chemistry , University of Geneva , 30 quai Ernest Ansermet , CH-1211 Geneva 4 , Switzerland
| | - Céline Besnard
- Laboratory of Crystallography , University of Geneva , 24 quai Ernest Ansermet , CH-1211 Geneva 4 , Switzerland
| | - Claude Piguet
- Department of Inorganic and Analytical Chemistry , University of Geneva , 30 quai Ernest Ansermet , CH-1211 Geneva 4 , Switzerland
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19
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Jiménez JR, Poncet M, Doistau B, Besnard C, Piguet C. Luminescent polypyridyl heteroleptic Cr III complexes with high quantum yields and long excited state lifetimes. Dalton Trans 2020; 49:13528-13532. [PMID: 32968750 DOI: 10.1039/d0dt02872j] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Implementing high quantum yields and long-lived excited state lifetimes within heteroleptic luminescent CrIII complexes is a keystone for the design of supramolecular energy-converting devices exploiting this cheap metal. In this contribution, we discuss the stepwise and rational optimization of these two limiting factors within a series of heteroleptic CrIII complexes.
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Affiliation(s)
- Juan-Ramón Jiménez
- Department of Inorganic and Analytical Chemistry, University of Geneva, 30 quai E. Ansermet, CH-1211 Geneva 4, Switzerland.
| | - Maxime Poncet
- Department of Inorganic and Analytical Chemistry, University of Geneva, 30 quai E. Ansermet, CH-1211 Geneva 4, Switzerland.
| | - Benjamin Doistau
- Department of Inorganic and Analytical Chemistry, University of Geneva, 30 quai E. Ansermet, CH-1211 Geneva 4, Switzerland.
| | - Céline Besnard
- Laboratory of Crystallography, University of Geneva, 24 quai E. Ansermet, CH-1211 Geneva 4, Switzerland
| | - Claude Piguet
- Department of Inorganic and Analytical Chemistry, University of Geneva, 30 quai E. Ansermet, CH-1211 Geneva 4, Switzerland.
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20
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Paul P, Salam N, Khan A, Das D, Alam SM, Islam SM. Macroporous polystyrene degraded and functionalized chromium MPS-Cr( iii)-alen complex as a sustainable porous catalyst for CO 2 fixation under atmospheric pressure and selective oxidation of aromatic alkenes. NEW J CHEM 2020. [DOI: 10.1039/d0nj02972f] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The benign synthesis of porous polystyrene supported chromium(iii) catalyst has been carried out for the production of cyclic carbonates via CO2 fixation under atm. pressure and for the selective oxidation of aromatic alkenes under mild conditions.
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Affiliation(s)
- Priyanka Paul
- Department of Chemistry
- University of Kalyani
- Nadia
- India
- Department of Chemistry
| | - Noor Salam
- Department of Chemistry
- The University of Burdwan
- Burdwan
- India
| | - Aslam Khan
- King Abdullah Institute for Nanotechnology
- King Saud University
- Riyadh
- Saudi Arabia
| | - Debasis Das
- Department of Chemistry
- The University of Burdwan
- Burdwan
- India
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21
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Treiling S, Wang C, Förster C, Reichenauer F, Kalmbach J, Boden P, Harris JP, Carrella LM, Rentschler E, Resch‐Genger U, Reber C, Seitz M, Gerhards M, Heinze K. Luminescence and Light-Driven Energy and Electron Transfer from an Exceptionally Long-Lived Excited State of a Non-Innocent Chromium(III) Complex. Angew Chem Int Ed Engl 2019; 58:18075-18085. [PMID: 31600421 PMCID: PMC6916301 DOI: 10.1002/anie.201909325] [Citation(s) in RCA: 64] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Revised: 10/01/2019] [Indexed: 01/10/2023]
Abstract
Photoactive metal complexes employing Earth-abundant metal ions are a key to sustainable photophysical and photochemical applications. We exploit the effects of an inversion center and ligand non-innocence to tune the luminescence and photochemistry of the excited state of the [CrN6 ] chromophore [Cr(tpe)2 ]3+ with close to octahedral symmetry (tpe=1,1,1-tris(pyrid-2-yl)ethane). [Cr(tpe)2 ]3+ exhibits the longest luminescence lifetime (τ=4500 μs) reported up to date for a molecular polypyridyl chromium(III) complex together with a very high luminescence quantum yield of Φ=8.2 % at room temperature in fluid solution. Furthermore, the tpe ligands in [Cr(tpe)2 ]3+ are redox non-innocent, leading to reversible reductive chemistry. The excited state redox potential and lifetime of [Cr(tpe)2 ]3+ surpass those of the classical photosensitizer [Ru(bpy)3 ]2+ (bpy=2,2'-bipyridine) enabling energy transfer (to oxygen) and photoredox processes (with azulene and tri(n-butyl)amine).
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Affiliation(s)
- Steffen Treiling
- Institute of Inorganic Chemistry and Analytical ChemistryJohannes Gutenberg University of MainzDuesbergweg 10–1455128MainzGermany
| | - Cui Wang
- Division BiophotonicsFederal Institute for Materials Research and Testing (BAM)Richard-Willstätter-Straße 1112489BerlinGermany
- Institute of Chemistry and BiochemistryFreie Universität BerlinTakustraße 314195BerlinGermany
| | - Christoph Förster
- Institute of Inorganic Chemistry and Analytical ChemistryJohannes Gutenberg University of MainzDuesbergweg 10–1455128MainzGermany
| | - Florian Reichenauer
- Institute of Inorganic Chemistry and Analytical ChemistryJohannes Gutenberg University of MainzDuesbergweg 10–1455128MainzGermany
| | - Jens Kalmbach
- Institute of Inorganic ChemistryUniversity of TübingenAuf der Morgenstelle 1872076TübingenGermany
| | - Pit Boden
- Department of Chemistry and Research Center OptimasTU KaiserslauternErwin-Schrödinger-Straße67663KaiserslauternGermany
| | - Joe P. Harris
- Département de chimieUniversité de MontréalMontréalQuébecH3C 3J7Canada
| | - Luca M. Carrella
- Institute of Inorganic Chemistry and Analytical ChemistryJohannes Gutenberg University of MainzDuesbergweg 10–1455128MainzGermany
| | - Eva Rentschler
- Institute of Inorganic Chemistry and Analytical ChemistryJohannes Gutenberg University of MainzDuesbergweg 10–1455128MainzGermany
| | - Ute Resch‐Genger
- Division BiophotonicsFederal Institute for Materials Research and Testing (BAM)Richard-Willstätter-Straße 1112489BerlinGermany
| | - Christian Reber
- Département de chimieUniversité de MontréalMontréalQuébecH3C 3J7Canada
| | - Michael Seitz
- Institute of Inorganic ChemistryUniversity of TübingenAuf der Morgenstelle 1872076TübingenGermany
| | - Markus Gerhards
- Department of Chemistry and Research Center OptimasTU KaiserslauternErwin-Schrödinger-Straße67663KaiserslauternGermany
| | - Katja Heinze
- Institute of Inorganic Chemistry and Analytical ChemistryJohannes Gutenberg University of MainzDuesbergweg 10–1455128MainzGermany
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Haiduc I. Review. Inverse coordination. Organic nitrogen heterocycles as coordination centers. A survey of molecular topologies and systematization. Part 2. Six-membered rings. J COORD CHEM 2019. [DOI: 10.1080/00958972.2019.1670349] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Ionel Haiduc
- Facultatea de Chimie, Universitatea Babeş-Bolyai, Cluj-Napoca, Romania
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23
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Treiling S, Wang C, Förster C, Reichenauer F, Kalmbach J, Boden P, Harris JP, Carrella LM, Rentschler E, Resch‐Genger U, Reber C, Seitz M, Gerhards M, Heinze K. Luminescence and Light‐Driven Energy and Electron Transfer from an Exceptionally Long‐Lived Excited State of a Non‐Innocent Chromium(III) Complex. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201909325] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Steffen Treiling
- Institute of Inorganic Chemistry and Analytical ChemistryJohannes Gutenberg University of Mainz Duesbergweg 10–14 55128 Mainz Germany
| | - Cui Wang
- Division BiophotonicsFederal Institute for Materials Research and Testing (BAM) Richard-Willstätter-Straße 11 12489 Berlin Germany
- Institute of Chemistry and BiochemistryFreie Universität Berlin Takustraße 3 14195 Berlin Germany
| | - Christoph Förster
- Institute of Inorganic Chemistry and Analytical ChemistryJohannes Gutenberg University of Mainz Duesbergweg 10–14 55128 Mainz Germany
| | - Florian Reichenauer
- Institute of Inorganic Chemistry and Analytical ChemistryJohannes Gutenberg University of Mainz Duesbergweg 10–14 55128 Mainz Germany
| | - Jens Kalmbach
- Institute of Inorganic ChemistryUniversity of Tübingen Auf der Morgenstelle 18 72076 Tübingen Germany
| | - Pit Boden
- Department of Chemistry and Research Center OptimasTU Kaiserslautern Erwin-Schrödinger-Straße 67663 Kaiserslautern Germany
| | - Joe P. Harris
- Département de chimieUniversité de Montréal Montréal Québec H3C 3J7 Canada
| | - Luca M. Carrella
- Institute of Inorganic Chemistry and Analytical ChemistryJohannes Gutenberg University of Mainz Duesbergweg 10–14 55128 Mainz Germany
| | - Eva Rentschler
- Institute of Inorganic Chemistry and Analytical ChemistryJohannes Gutenberg University of Mainz Duesbergweg 10–14 55128 Mainz Germany
| | - Ute Resch‐Genger
- Division BiophotonicsFederal Institute for Materials Research and Testing (BAM) Richard-Willstätter-Straße 11 12489 Berlin Germany
| | - Christian Reber
- Département de chimieUniversité de Montréal Montréal Québec H3C 3J7 Canada
| | - Michael Seitz
- Institute of Inorganic ChemistryUniversity of Tübingen Auf der Morgenstelle 18 72076 Tübingen Germany
| | - Markus Gerhards
- Department of Chemistry and Research Center OptimasTU Kaiserslautern Erwin-Schrödinger-Straße 67663 Kaiserslautern Germany
| | - Katja Heinze
- Institute of Inorganic Chemistry and Analytical ChemistryJohannes Gutenberg University of Mainz Duesbergweg 10–14 55128 Mainz Germany
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Jiménez JR, Doistau B, Cruz CM, Besnard C, Cuerva JM, Campaña AG, Piguet C. Chiral Molecular Ruby [Cr(dqp)2]3+ with Long-Lived Circularly Polarized Luminescence. J Am Chem Soc 2019; 141:13244-13252. [DOI: 10.1021/jacs.9b06524] [Citation(s) in RCA: 89] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Juan-Ramón Jiménez
- Department of Inorganic and Analytical Chemistry, University of Geneva, 30 Quai E. Ansermet, CH-1211 Geneva 4, Switzerland
| | - Benjamin Doistau
- Department of Inorganic and Analytical Chemistry, University of Geneva, 30 Quai E. Ansermet, CH-1211 Geneva 4, Switzerland
| | - Carlos M. Cruz
- Departamento de Quı́mica Orgánica, Unidad de Excelencia de Quı́mica Aplicada a Biomedicina y Medioambiente, Universidad de Granada, Avda. Fuentenueva, E-18071 Granada, España
| | - Céline Besnard
- Laboratory of Crystallography, University of Geneva, 24 Quai E. Ansermet, CH-1211 Geneva 4, Switzerland
| | - Juan M. Cuerva
- Departamento de Quı́mica Orgánica, Unidad de Excelencia de Quı́mica Aplicada a Biomedicina y Medioambiente, Universidad de Granada, Avda. Fuentenueva, E-18071 Granada, España
| | - Araceli G. Campaña
- Departamento de Quı́mica Orgánica, Unidad de Excelencia de Quı́mica Aplicada a Biomedicina y Medioambiente, Universidad de Granada, Avda. Fuentenueva, E-18071 Granada, España
| | - Claude Piguet
- Department of Inorganic and Analytical Chemistry, University of Geneva, 30 Quai E. Ansermet, CH-1211 Geneva 4, Switzerland
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25
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Dee C, Zinna F, Kitzmann WR, Pescitelli G, Heinze K, Di Bari L, Seitz M. Strong circularly polarized luminescence of an octahedral chromium(iii) complex. Chem Commun (Camb) 2019; 55:13078-13081. [DOI: 10.1039/c9cc06909g] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The chiral spin–flip luminophore [Cr(ddpd)2]3+ can be resolved into enantiopure material by chiral HPLC. The pure enantiomers display strong CPL activity for the corresponding near-IR phosphorescence.
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Affiliation(s)
- Carolin Dee
- Institute of Inorganic Chemistry
- University of Tübingen
- 72076 Tübingen
- Germany
| | - Francesco Zinna
- Dipartimento di Chimica e Chimica Industriale
- Università di Pisa
- 56124 Pisa
- Italy
| | - Winald R. Kitzmann
- Institute of Inorganic Chemistry and Analytical Chemistry
- Johannes Gutenberg University of Mainz
- 55128 Mainz
- Germany
| | - Gennaro Pescitelli
- Dipartimento di Chimica e Chimica Industriale
- Università di Pisa
- 56124 Pisa
- Italy
| | - Katja Heinze
- Institute of Inorganic Chemistry and Analytical Chemistry
- Johannes Gutenberg University of Mainz
- 55128 Mainz
- Germany
| | - Lorenzo Di Bari
- Dipartimento di Chimica e Chimica Industriale
- Università di Pisa
- 56124 Pisa
- Italy
| | - Michael Seitz
- Institute of Inorganic Chemistry
- University of Tübingen
- 72076 Tübingen
- Germany
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26
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Farran R, Le-Quang L, Mouesca JM, Maurel V, Jouvenot D, Loiseau F, Deronzier A, Chauvin J. [Cr(ttpy)2]3+ as a multi-electron reservoir for photoinduced charge accumulation. Dalton Trans 2019; 48:6800-6811. [PMID: 31033972 DOI: 10.1039/c9dt00848a] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
[Cr(ttpy)2]3+ (ttpy = 4'-(4-methylphenyl)-2,2':6,2''-terpyridine) exhibits rich electrochemical and photophysical properties. Cyclic voltammetry performed in CH3CN shows in the cathodic part the presence of three one-electron reversible systems at -0.47, -0.85 and -1.35 V vs. Ag/AgNO3 10-2 M. These systems are attributed to the reduction of the terpyridine ligands with a partial delocalization of the charge on the tolyl for the last reduction event. The three different reduced species were generated by exhaustive electrolysis and characterized by EPR and UV-visible spectroscopy; DFT calculations were performed to locate the spin density of the electrons added during the reduction. Visible light irradiation of [Cr(ttpy)2]3+ induces the population of a luminescent metal-centered excited state with a lifetime of 270 ns in deoxygenated CH3CN. This excited state can be quenched by an electron transfer process with triphenylphosphine (PPh3) or triethanolamine (TEOA). Using TEOA as a sacrificial electron donor, the doubly reduced species (i.e.[Cr(ttpy)2] +) can be generated under continuous irradiation. In the presence of [Ru(bpy)3]2+ as an additional photosensitizer, the photoreduction of [Cr(ttpy)2]3+ towards [Cr(ttpy)2]+ is accelerated. The trinuclear [{RuII(bpy)2(bpy-O-tpy)}2CrIII]7+ complex ([Ru2Cr]7+) in which a CrIII-bis-terpyridine centre is covalently linked to two RuII-tris-bipyridine moieties by oxo bridges has been synthesised. Its electrochemical, photophysical and photochemical properties were investigated in deoxygenated CH3CN. Cyclic voltammetry indicates only a poor electronic communication between the different subunits, whereas luminescence experiments show a strong quenching of the RuII* excited state by an intramolecular process. Continuous irradiation of [Ru2Cr]7+ under visible conditions in the presence of TEOA leads to [Ru2Cr]4+ where three electrons are stored on the [Cr(ttpy)] subunit.
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Affiliation(s)
- Rajaa Farran
- Univ. Grenoble Alpes, CNRS, DCM, F-38000 Grenoble, France.
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27
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Kosobokov MD, Xue T, Vicic DA. Synthesis of an anionic derivative of the terpyridine ligand. Polyhedron 2018. [DOI: 10.1016/j.poly.2018.08.062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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28
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Doistau B, Collet G, Bolomey EA, Sadat-Noorbakhsh V, Besnard C, Piguet C. Heteroleptic Ter–Bidentate Cr(III) Complexes as Tunable Optical Sensitizers. Inorg Chem 2018; 57:14362-14373. [PMID: 30376321 DOI: 10.1021/acs.inorgchem.8b02530] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Benjamin Doistau
- Department of Inorganic and Analytical Chemistry, University of Geneva, 30 quai Ernest Ansermet, CH-1211 Geneva 4, Switzerland
| | - Guillaume Collet
- Department of Inorganic and Analytical Chemistry, University of Geneva, 30 quai Ernest Ansermet, CH-1211 Geneva 4, Switzerland
| | - Emilio Acuña Bolomey
- Department of Inorganic and Analytical Chemistry, University of Geneva, 30 quai Ernest Ansermet, CH-1211 Geneva 4, Switzerland
| | - Vida Sadat-Noorbakhsh
- Department of Inorganic and Analytical Chemistry, University of Geneva, 30 quai Ernest Ansermet, CH-1211 Geneva 4, Switzerland
| | - Céline Besnard
- Laboratory of Crystallography, University of Geneva, 24 quai Ernest Ansermet, CH-1211 Geneva 4, Switzerland
| | - Claude Piguet
- Department of Inorganic and Analytical Chemistry, University of Geneva, 30 quai Ernest Ansermet, CH-1211 Geneva 4, Switzerland
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29
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Glootz K, Kratzert D, Himmel D, Kastro A, Yassine Z, Findeisen T, Krossing I. Tetracationic Gallium Cluster Cations. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201807486] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Kim Glootz
- Institut für Anorganische und Analytische Chemie and Freiburger Materialforschungszentrum (FMF); Universität Freiburg; Albertstraße 21 79104 Freiburg Germany
| | - Daniel Kratzert
- Institut für Anorganische und Analytische Chemie and Freiburger Materialforschungszentrum (FMF); Universität Freiburg; Albertstraße 21 79104 Freiburg Germany
| | - Daniel Himmel
- Institut für Anorganische und Analytische Chemie and Freiburger Materialforschungszentrum (FMF); Universität Freiburg; Albertstraße 21 79104 Freiburg Germany
| | - Aho Kastro
- Institut für Anorganische und Analytische Chemie and Freiburger Materialforschungszentrum (FMF); Universität Freiburg; Albertstraße 21 79104 Freiburg Germany
| | - Zeinab Yassine
- Institut für Anorganische und Analytische Chemie and Freiburger Materialforschungszentrum (FMF); Universität Freiburg; Albertstraße 21 79104 Freiburg Germany
| | - Tobias Findeisen
- Institut für Anorganische und Analytische Chemie and Freiburger Materialforschungszentrum (FMF); Universität Freiburg; Albertstraße 21 79104 Freiburg Germany
| | - Ingo Krossing
- Institut für Anorganische und Analytische Chemie and Freiburger Materialforschungszentrum (FMF); Universität Freiburg; Albertstraße 21 79104 Freiburg Germany
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30
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Glootz K, Kratzert D, Himmel D, Kastro A, Yassine Z, Findeisen T, Krossing I. Tetracationic Gallium Cluster Cations. Angew Chem Int Ed Engl 2018; 57:14203-14206. [DOI: 10.1002/anie.201807486] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2018] [Revised: 08/16/2018] [Indexed: 11/07/2022]
Affiliation(s)
- Kim Glootz
- Institut für Anorganische und Analytische Chemie and Freiburger Materialforschungszentrum (FMF); Universität Freiburg; Albertstraße 21 79104 Freiburg Germany
| | - Daniel Kratzert
- Institut für Anorganische und Analytische Chemie and Freiburger Materialforschungszentrum (FMF); Universität Freiburg; Albertstraße 21 79104 Freiburg Germany
| | - Daniel Himmel
- Institut für Anorganische und Analytische Chemie and Freiburger Materialforschungszentrum (FMF); Universität Freiburg; Albertstraße 21 79104 Freiburg Germany
| | - Aho Kastro
- Institut für Anorganische und Analytische Chemie and Freiburger Materialforschungszentrum (FMF); Universität Freiburg; Albertstraße 21 79104 Freiburg Germany
| | - Zeinab Yassine
- Institut für Anorganische und Analytische Chemie and Freiburger Materialforschungszentrum (FMF); Universität Freiburg; Albertstraße 21 79104 Freiburg Germany
| | - Tobias Findeisen
- Institut für Anorganische und Analytische Chemie and Freiburger Materialforschungszentrum (FMF); Universität Freiburg; Albertstraße 21 79104 Freiburg Germany
| | - Ingo Krossing
- Institut für Anorganische und Analytische Chemie and Freiburger Materialforschungszentrum (FMF); Universität Freiburg; Albertstraße 21 79104 Freiburg Germany
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31
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Yoshida T, Higuchi M. Diversity in Design of Electrochromic Devices with Metallo-Supramolecular Polymer: Multi-Patterned and Tube-Shaped Displays. J PHOTOPOLYM SCI TEC 2018. [DOI: 10.2494/photopolymer.31.343] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Takefumi Yoshida
- Electronic Functional Macromolecules Group, National Institute for Materials Science (NIMS)
| | - Masayoshi Higuchi
- Electronic Functional Macromolecules Group, National Institute for Materials Science (NIMS)
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32
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33
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Cadranel A, Oviedo PS, Alborés P, Baraldo LM, Guldi DM, Hodak JH. Electronic Energy Transduction from {Ru(py) 4} Chromophores to Cr(III) Luminophores. Inorg Chem 2018; 57:3042-3053. [PMID: 29473740 DOI: 10.1021/acs.inorgchem.7b02799] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Despite the large body of work on {Ru(bpy)2} sensitizer fragments, the same attention has not been devoted to their {Ru(py)4} analogues. In this context, we explored the donor-acceptor trans-[Ru(L)4{(μ-NC)Cr(CN)5}2]4-, where L = pyridine, 4-methoxypyridine, 4-dimethylaminopyridine. We report on the synthesis and the crystal structure as well as the electrochemical, spectroscopical, and photophysical properties of these trimetallic complexes, including transient absorption measurements. We observed emission from chromium-centered d-d states upon illuminating into either MLCT or MM'CT absorptions of {Ru(L)4} or {Ru-Cr}, respectively. The underlying energy transfer is as fast as 600 fs with quantum efficiencies ranging from 10% to 100%. These results document that {Ru(py)4} sensitizer fragments are as efficient as {Ru(bpy)2} in short-range energy transfer scenarios.
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Affiliation(s)
- Alejandro Cadranel
- Departamento de Química Analítica, Inorgánica y Química Física & INQUIMAE, Facultad de Ciencias Exactas y Naturales , Universidad de Buenos Aires , Pabellón 2 , Ciudad Universitaria, C1428EHA Buenos Aires , Argentina.,Department of Chemistry and Pharmacy & Interdisciplinary Center for Molecular Materials (ICMM) , Friedrich-Alexander-Universität Erlangen-Nürnberg , Egerlandstraße 1-3 , 91058 Erlangen , Germany
| | - Paola S Oviedo
- Departamento de Química Analítica, Inorgánica y Química Física & INQUIMAE, Facultad de Ciencias Exactas y Naturales , Universidad de Buenos Aires , Pabellón 2 , Ciudad Universitaria, C1428EHA Buenos Aires , Argentina
| | - Pablo Alborés
- Departamento de Química Analítica, Inorgánica y Química Física & INQUIMAE, Facultad de Ciencias Exactas y Naturales , Universidad de Buenos Aires , Pabellón 2 , Ciudad Universitaria, C1428EHA Buenos Aires , Argentina
| | - Luis M Baraldo
- Departamento de Química Analítica, Inorgánica y Química Física & INQUIMAE, Facultad de Ciencias Exactas y Naturales , Universidad de Buenos Aires , Pabellón 2 , Ciudad Universitaria, C1428EHA Buenos Aires , Argentina
| | - Dirk M Guldi
- Department of Chemistry and Pharmacy & Interdisciplinary Center for Molecular Materials (ICMM) , Friedrich-Alexander-Universität Erlangen-Nürnberg , Egerlandstraße 1-3 , 91058 Erlangen , Germany
| | - José H Hodak
- Departamento de Química Analítica, Inorgánica y Química Física & INQUIMAE, Facultad de Ciencias Exactas y Naturales , Universidad de Buenos Aires , Pabellón 2 , Ciudad Universitaria, C1428EHA Buenos Aires , Argentina
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34
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Wang C, Otto S, Dorn M, Kreidt E, Lebon J, Sršan L, Di Martino-Fumo P, Gerhards M, Resch-Genger U, Seitz M, Heinze K. Deuterierter molekularer Rubin mit Rekord-Lumineszenzquantenausbeute. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201711350] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Cui Wang
- Fachbereich Biophotonik; Bundesanstalt für Materialforschung und -prüfung (BAM); Richard-Willstätter-Str. 11 12489 Berlin Deutschland
- Institut für Chemie und Biochemie; Freie Universität Berlin; 14195 Berlin Deutschland
| | - Sven Otto
- Institut für Anorganische Chemie und Analytische Chemie; Johannes Gutenberg-Universität Mainz; Duesbergweg 10-14 55128 Mainz Deutschland
- Graduiertenschule Materials Science in Mainz - MAINZ; Staudingerweg 9 55128 Mainz Deutschland
| | - Matthias Dorn
- Institut für Anorganische Chemie und Analytische Chemie; Johannes Gutenberg-Universität Mainz; Duesbergweg 10-14 55128 Mainz Deutschland
| | - Elisabeth Kreidt
- Institut für Anorganische Chemie, Universität Tübingen; Auf der Morgenstelle 18 72076 Tübingen Deutschland
| | - Jakob Lebon
- Institut für Anorganische Chemie, Universität Tübingen; Auf der Morgenstelle 18 72076 Tübingen Deutschland
| | - Laura Sršan
- Institut für Anorganische Chemie, Universität Tübingen; Auf der Morgenstelle 18 72076 Tübingen Deutschland
| | - Patrick Di Martino-Fumo
- Department of Chemistry and Research Center Optimas; Universität Kaiserslautern; Erwin-Schrödinger-Str. 67663 Kaiserslautern Deutschland
| | - Markus Gerhards
- Department of Chemistry and Research Center Optimas; Universität Kaiserslautern; Erwin-Schrödinger-Str. 67663 Kaiserslautern Deutschland
| | - Ute Resch-Genger
- Fachbereich Biophotonik; Bundesanstalt für Materialforschung und -prüfung (BAM); Richard-Willstätter-Str. 11 12489 Berlin Deutschland
| | - Michael Seitz
- Institut für Anorganische Chemie, Universität Tübingen; Auf der Morgenstelle 18 72076 Tübingen Deutschland
| | - Katja Heinze
- Institut für Anorganische Chemie und Analytische Chemie; Johannes Gutenberg-Universität Mainz; Duesbergweg 10-14 55128 Mainz Deutschland
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35
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Wang C, Otto S, Dorn M, Kreidt E, Lebon J, Sršan L, Di Martino-Fumo P, Gerhards M, Resch-Genger U, Seitz M, Heinze K. Deuterated Molecular Ruby with Record Luminescence Quantum Yield. Angew Chem Int Ed Engl 2018; 57:1112-1116. [DOI: 10.1002/anie.201711350] [Citation(s) in RCA: 65] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2017] [Indexed: 01/29/2023]
Affiliation(s)
- Cui Wang
- Division Biophotonics; Federal Institute for Materials Research and Testing (BAM); Richard-Willstätter-Strasse 11 12489 Berlin Germany
- Institut für Chemie und Biochemie; Freie Universität Berlin; 14195 Berlin Germany
| | - Sven Otto
- Institute of Inorganic Chemistry and Analytical Chemistry; Johannes Gutenberg University of Mainz; Duesbergweg 10-14 55128 Mainz Germany
- Graduate School Materials Science in Mainz; Staudingerweg 9 55128 Mainz Germany
| | - Matthias Dorn
- Institute of Inorganic Chemistry and Analytical Chemistry; Johannes Gutenberg University of Mainz; Duesbergweg 10-14 55128 Mainz Germany
| | - Elisabeth Kreidt
- Institute of Inorganic Chemistry; University of Tübingen; Auf der Morgenstelle 18 72076 Tübingen Germany
| | - Jakob Lebon
- Institute of Inorganic Chemistry; University of Tübingen; Auf der Morgenstelle 18 72076 Tübingen Germany
| | - Laura Sršan
- Institute of Inorganic Chemistry; University of Tübingen; Auf der Morgenstelle 18 72076 Tübingen Germany
| | - Patrick Di Martino-Fumo
- Department of Chemistry and Research Center Optimas; University Kaiserslautern; Erwin-Schrödinger-Strasse 67663 Kaiserslautern Germany
| | - Markus Gerhards
- Department of Chemistry and Research Center Optimas; University Kaiserslautern; Erwin-Schrödinger-Strasse 67663 Kaiserslautern Germany
| | - Ute Resch-Genger
- Division Biophotonics; Federal Institute for Materials Research and Testing (BAM); Richard-Willstätter-Strasse 11 12489 Berlin Germany
| | - Michael Seitz
- Institute of Inorganic Chemistry; University of Tübingen; Auf der Morgenstelle 18 72076 Tübingen Germany
| | - Katja Heinze
- Institute of Inorganic Chemistry and Analytical Chemistry; Johannes Gutenberg University of Mainz; Duesbergweg 10-14 55128 Mainz Germany
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36
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Jiménez JR, Doistau B, Besnard C, Piguet C. Versatile heteroleptic bis-terdentate Cr(iii) chromophores displaying room temperature millisecond excited state lifetimes. Chem Commun (Camb) 2018; 54:13228-13231. [DOI: 10.1039/c8cc07671e] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Cr–Br bonds can be specifically labilized for producing phosphorescent and tuneable heteroleptic bis-terdentate Cr(iii) long-lived sensitizers.
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Affiliation(s)
- Juan-Ramón Jiménez
- Department of Inorganic and Analytical Chemistry, University of Geneva
- CH-1211 Geneva 4
- Switzerland
| | - Benjamin Doistau
- Department of Inorganic and Analytical Chemistry, University of Geneva
- CH-1211 Geneva 4
- Switzerland
| | - Céline Besnard
- Laboratory of Cristallography, University of Geneva
- CH-1211 Geneva 4
- Switzerland
| | - Claude Piguet
- Department of Inorganic and Analytical Chemistry, University of Geneva
- CH-1211 Geneva 4
- Switzerland
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