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Tremlett WDJ, Crowley JD, Wright LJ, Hartinger CG. Towards building blocks for metallosupramolecular structures: non-symmetrically-functionalised ferrocenyl compounds. Dalton Trans 2024; 53:14742-14751. [PMID: 39158552 DOI: 10.1039/d4dt01646g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/20/2024]
Abstract
Metallosupramolecular architectures formed from metal ions and bridging ligands are increasing in popularity due to their range of applications and ease of self-assembly. Many are able to readily change their shape and/or function in response to an external stimulus and have the ability to encapsulate guest molecules within their internal cavities. Ferrocenyl groups (Fc) have been incorporated previously within the bridging ligands of metallosupramolecular structures due to their ideal attributes brought about by the structural and rotational flexiblity of the two cyclopentadienyl (Cp) rings coordinated to the Fe(II) centre. However, the majority of these Fc-based structures contain symmetrically substituted Cp rings. We report the synthesis and characterisation of non-symmetrically functionalised Fc-based ligands incorporating both N,N' and NHC-donor groups chosen for their differing coordination properties. Both substituents were designed to coordinate to a single metal centre with the dissimilar coordination properties of each donor group facilitating stimulus-induced dissociation/association of one of the substituents as an opening/closing mechanism. Preliminary investigations into the coordination of these Fc-based ligands to a [Ru(η6-p-cymene)]2+ moiety indicated complexation through a mixture of either a bi- or tridentate fashion, as alluded by 1H NMR spectroscopy and mass spectrometry. Density functional theory (DFT) calculations revealed the Fc-based ligands adopt a syn conformation driven by H-bonding and π-interactions between the two Cp substituents, which facilitate coordination of both donor groups towards the metal centre.
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Affiliation(s)
- William D J Tremlett
- School of Chemical Sciences, University of Auckland, 23 Symonds Street, Auckland 1010, New Zealand.
| | - James D Crowley
- Department of Chemistry, University of Otago, PO Box 56, Dunedin 9054, New Zealand
| | - L James Wright
- School of Chemical Sciences, University of Auckland, 23 Symonds Street, Auckland 1010, New Zealand.
| | - Christian G Hartinger
- School of Chemical Sciences, University of Auckland, 23 Symonds Street, Auckland 1010, New Zealand.
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2
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Hayasaka R, Sakai H, Fuki M, Okamoto T, Khan R, Higashi M, Tkachenko NV, Kobori Y, Hasobe T. The Effect of Torsional Motion on Multiexciton Formation through Intramolecular Singlet Fission in Ferrocene-Bridged Pentacene Dimers. Angew Chem Int Ed Engl 2024; 63:e202315747. [PMID: 38179830 DOI: 10.1002/anie.202315747] [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: 10/18/2023] [Revised: 12/30/2023] [Accepted: 01/04/2024] [Indexed: 01/06/2024]
Abstract
A series of ferrocene(Fc)-bridged pentacene(Pc)-dimers [Fc-Ph(2,n)-(Pc)2 : n=number of phenylene spacers] were synthesized to examine the tortional motion effect of Fc-terminated phenylene linkers on strongly coupled quintet multiexciton (5 TT) formation through intramolecular singlet fission (ISF). Fc-Ph(2,4)-(Pc)2 has a relatively small electronic coupling and large conformational flexibility according to spectroscopic and theoretical analyses. Fc-Ph(2,4)-(Pc)2 exhibits a high-yield 5 TT together with quantitative singlet TT (1 TT) generation through ISF. This demonstrates a much more efficient ISF than those of other less flexible Pc dimers. The activation entropy in 1 TT spin conversion of Fc-Ph(2,4)-(Pc)2 is larger than those of the other systems due to the larger conformational flexibility associated with the torsional motion of the linkers. The torsional motion of linkers in 1 TT is attributable to weakened metal-ligand bonding in the Fc due to hybridization of the hole level of Pc to Fc in 1 TT unpaired orbitals.
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Affiliation(s)
- Ryo Hayasaka
- Department of Chemistry, Faculty of Science and Technology, Keio University, Yokohama, Kanagawa 223-8522, Japan
| | - Hayato Sakai
- Department of Chemistry, Faculty of Science and Technology, Keio University, Yokohama, Kanagawa 223-8522, Japan
| | - Masaaki Fuki
- Molecular Photoscience Research Center, Kobe University, 1-1 Rokkodai-cho, Nada-ku, Kobe 657-8501, Japan
- Department of Chemistry, Graduate School of Science, Kobe University, 1-1, Rokkodai-cho, Nada-ku, Kobe 657-8501, Japan
- CREST, JST, Honcho 4-1-8, Kawaguchi, Saitama 332-0012, Japan
| | - Tsubasa Okamoto
- Molecular Photoscience Research Center, Kobe University, 1-1 Rokkodai-cho, Nada-ku, Kobe 657-8501, Japan
- Department of Chemistry, Graduate School of Science, Kobe University, 1-1, Rokkodai-cho, Nada-ku, Kobe 657-8501, Japan
- CREST, JST, Honcho 4-1-8, Kawaguchi, Saitama 332-0012, Japan
| | - Ramsha Khan
- Chemistry and Advanced Materials Group, Faculty of Engineering and Natural Sciences, Tampere University, Korkeakoulunkatu 8, 33720, Tampere, Finland
| | - Masahiro Higashi
- Department of Complex Systems Science, Graduate School of Informatics, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601, Japan
| | - Nikolai V Tkachenko
- Chemistry and Advanced Materials Group, Faculty of Engineering and Natural Sciences, Tampere University, Korkeakoulunkatu 8, 33720, Tampere, Finland
| | - Yasuhiro Kobori
- Molecular Photoscience Research Center, Kobe University, 1-1 Rokkodai-cho, Nada-ku, Kobe 657-8501, Japan
- Department of Chemistry, Graduate School of Science, Kobe University, 1-1, Rokkodai-cho, Nada-ku, Kobe 657-8501, Japan
- CREST, JST, Honcho 4-1-8, Kawaguchi, Saitama 332-0012, Japan
| | - Taku Hasobe
- Department of Chemistry, Faculty of Science and Technology, Keio University, Yokohama, Kanagawa 223-8522, Japan
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Stogniy MY, Anufriev SA, Bogdanova EV, Gorodetskaya NA, Anisimov AA, Suponitsky KY, Grishin ID, Sivaev IB. Charge-compensated nido-carborane derivatives in the synthesis of iron(II) bis(dicarbollide) complexes. Dalton Trans 2024. [PMID: 38264799 DOI: 10.1039/d3dt03549b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2024]
Abstract
A series of stable iron(II) bis(dicarbollide) derivatives [8,8'-(RNHC(Et)HN)2-3,3'-Fe(1,2-C2B9H10)2] (R = Pr, R = Ph, (CH2)2OH, (CH2)3OH, (CH2)2NMe2) was prepared starting from FeCl2 or [FeCl2(dppe)] and the corresponding nido-carboranyl amidines [10-RNHC(Et)HN-7,8-C2B9H11]. In a similar way, the reactions of the oxonium derivatives of nido-carborane with FeCl2 in tetrahydrofuran in the presence of t-BuOK lead to the corresponding stable oxonium derivatives iron(II) bis(dicarbollide) [8,8'-(RR'O)2-3,3'-Fe(1,2-C2B9H10)2] (RR' = (CH2)4, (CH2)2O(CH2)2, (CH2)5; R = R' = Et), which can be alternatively prepared by the reaction of the parent iron(II) bis(dicarbollide) with tetrahydrofuran or 1,4-dioxane in the presence of Me2SO4. The cyclic voltammetry studies of the synthesized iron(II) bis(dicarbollide) derivatives revealed that the introduction of amidinium and oxonium substituents leads to a significant increase in the Fe2+/Fe3+ redox potential relative to the parent iron(II) bis(dicarbollide). The redox potentials of the oxonium derivatives are close to the redox potential of ferrocene and somewhat lower than redox potentials of sulfonium and phosphonium derivatives of iron(II) bis(dicarbollide).
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Affiliation(s)
- Marina Yu Stogniy
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Moscow, Russia.
- M.V. Lomonosov Institute of Fine Chemical Technology, MIREA - Russian Technological University, Moscow, Russia
| | - Sergey A Anufriev
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Moscow, Russia.
| | - Ekaterina V Bogdanova
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Moscow, Russia.
- M.V. Lomonosov Institute of Fine Chemical Technology, MIREA - Russian Technological University, Moscow, Russia
| | - Nadezhda A Gorodetskaya
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Moscow, Russia.
- M.V. Lomonosov Institute of Fine Chemical Technology, MIREA - Russian Technological University, Moscow, Russia
| | - Alexei A Anisimov
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Moscow, Russia.
| | - Kyrill Yu Suponitsky
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Moscow, Russia.
- G.V. Plekhanov Russian University of Economics, Moscow, Russia
| | - Ivan D Grishin
- Lobachevsky State University of Nizhny Novgorod, Nizhny Novgorod, Russia
| | - Igor B Sivaev
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Moscow, Russia.
- Faculty of Chemistry, National Research University Higher School of Economics (HSE University), Moscow, Russia
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4
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Guchhait C, Suriyaa V, Sahu N, Sarkar SD, Adhikari B. Ferrocene: an exotic building block for supramolecular assemblies. Chem Commun (Camb) 2023; 59:14482-14496. [PMID: 37997157 DOI: 10.1039/d3cc03659f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2023]
Abstract
Ferrocene (Fc), a classical organometallic complex, has found potential applications in ligand design, catalysis, and analytical, biological, medicinal and materials chemistry. In recent years, the use of Fc as a building block in supramolecular chemistry has emerged. The molecular shape, size, and hydrophobicity of Fc make it an ideal guest for a variety of macrocyclic host molecules to form stable host-guest complexes. The vertical distance (3.3 Å) between two cyclopentadienyl rings and molecular "ball bearing" property in Fc support the formation of intramolecular π-π stacking, H-bonding and metallophilic interactions between two appropriate substituents in 1,n'-disubstituted ferrocenes. Along with these molecular features, the rigidity along with rotational flexibility, redox reversibility and oxidation-triggered tunable hydrophobicity of Fc have led to its use as an exotic building block for the development of a wide range of supramolecular assemblies such as smart molecular receptors, intricate metal-organic assemblies, supramolecular polymers, and gels including out-of-equilibrium assemblies and metal nanoparticle assemblies. This review highlights the concepts behind the design and development of these assemblies, where the Fc unit has a direct and defined role in their formation and function. The use of Fc in supramolecular assembly is still a relatively young field and set to be the subject of increasing research interest towards the development of fascinating supramolecular structures with tailored properties and programmable functions towards applications in materials and biological sciences.
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Affiliation(s)
- Chandrakanta Guchhait
- Department of Chemistry, National Institute of Technology Rourkela, Rourkela, Odisha 769008, India.
| | - Vembanan Suriyaa
- Department of Chemistry, National Institute of Technology Rourkela, Rourkela, Odisha 769008, India.
| | - Nihar Sahu
- Department of Chemistry, National Institute of Technology Rourkela, Rourkela, Odisha 769008, India.
| | - Sovik Dey Sarkar
- Department of Chemistry, National Institute of Technology Rourkela, Rourkela, Odisha 769008, India.
| | - Bimalendu Adhikari
- Department of Chemistry, National Institute of Technology Rourkela, Rourkela, Odisha 769008, India.
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5
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Chakalov ER, Shekurov RP, Miluykov VA, Tolstoy PM. Evidence of extremely short hydrogen bond in the homoconjugated ferrocene-1,1'-diyl-bisphosphinic acid anion: sign change of the H/D isotope effect on the 31P NMR chemical shift. Phys Chem Chem Phys 2023; 25:29486-29495. [PMID: 37888828 DOI: 10.1039/d3cp03714b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2023]
Abstract
The structure of the two intramolecular hydrogen-bonded motifs within ferrocene-1,1'-diyl-bisphosphinic acid, a cyclic dimer and a homoconjugated anion, has been experimentally revealed by NMR spectroscopy for a solution in a low-freezing polar aprotic CDF3/CDF2Cl medium at 100 K. Structure elucidation was achieved with the help of the H/D isotope effects on the 1H, 2H and, for the first time, 31P NMR chemical shifts. The questions of bridging hydron localization and origins of opposite signs of H/D isotope effects on the 31P NMR chemical shifts in the cyclic dimer and homoconjugated anion have also been addressed by DFT calculations, including numerical solution of the Schrödinger equation for proton and deuteron vibrations in the anharmonic double well potentials.
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Affiliation(s)
- E R Chakalov
- Institute of Chemistry, St. Petersburg State University, Russia.
| | - R P Shekurov
- A.E. Arbuzov Institute of Organic and Physical Chemistry, RAS, Russia
| | - V A Miluykov
- A.E. Arbuzov Institute of Organic and Physical Chemistry, RAS, Russia
| | - P M Tolstoy
- Institute of Chemistry, St. Petersburg State University, Russia.
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Tremlett WDJ, Söhnel T, Crowley JD, Wright LJ, Hartinger CG. Ferrocene-Derived Palladium(II)-Based Metallosupramolecular Structures: Synthesis, Guest Interaction, and Stimulus-Responsiveness Studies. Inorg Chem 2023; 62:3616-3628. [PMID: 36791401 DOI: 10.1021/acs.inorgchem.2c04399] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
Abstract
Using ferrocene-based ligand systems, a series of heterobimetallic architectures of the general formula [PdmLn]x+ were designed with the aim of installing an opening and closing mechanism that would allow the release and binding of guest molecules. Palladium complex formation was achieved through coordination to pyridyl groups, and using 2-, 3-, and 4-pyridyl derivatives provided access to defined PdL, PdL2, and Pd2L4 structures, respectively. The supramolecular complexes were characterized using nuclear magnetic resonance (NMR) and infrared spectroscopy, mass spectrometry, and elemental analysis, and for some examples density functional theory calculations and single-crystal X-ray diffraction analysis. 1H NMR spectroscopy was used to investigate disassembly and reassembly of the metallosupramolecular structures. The former was induced by cleavage of the relatively labile Pd-Npyridyl bonds with the introduction of the competing ligands N,N'-dimethylaminopyridine (DMAP) and Cl- (using tetrabutylammonium chloride) to yield [Pd(DMAP)4]2+ and [PdCl4]2-, respectively. The process was found to be reversible for several of the heterodimetallic compounds, with the addition of H+ or Ag+ triggering complex reassembly. Guest binding studies with several architectures revealed interactions with the anionic guests p-toluenesulfonate and octyl sulfate, but not with neutral molecules. Furthermore, the release of guests was reversibly induced with Cl- ions as a stimulus.
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Affiliation(s)
- William D J Tremlett
- School of Chemical Sciences, University of Auckland, 23 Symonds Street, Auckland 1010, New Zealand
| | - Tilo Söhnel
- School of Chemical Sciences, University of Auckland, 23 Symonds Street, Auckland 1010, New Zealand
| | - James D Crowley
- Department of Chemistry, University of Otago, P.O. Box 56, Dunedin 9054, New Zealand
| | - L James Wright
- School of Chemical Sciences, University of Auckland, 23 Symonds Street, Auckland 1010, New Zealand
| | - Christian G Hartinger
- School of Chemical Sciences, University of Auckland, 23 Symonds Street, Auckland 1010, New Zealand
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7
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Umer Lone M, Sahu N, Kumar Roy R, Adhikari B. Introduction of Ferrocene as a Facilitator for the Construction of Supramolecular Polymers. Chemistry 2023; 29:e202202711. [PMID: 36178321 DOI: 10.1002/chem.202202711] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Indexed: 01/04/2023]
Abstract
Proper monomer design is the key to enhancing the strength of noncovalent interactions between the molecules toward the efficient formation of supramolecular polymers (SPs). We have designed and synthesized 1,n'-disubstituted ferrocene-azobenzene-long alkyl chains, Fc(CONH-Azo-TDP)2 , to afford SPs with a high probability. The design exploits the ''molecular ball-bearing'' property of the ferrocene core, which allows two azobenzene arms to rotate in the planes of cyclopentadienyl rings, generating the most suitable molecular conformation required for SP formation. This ferrocene monomer formed a supergel consisting of SPs supported by strong intermolecular (H-bonding and π-π stacking) interactions and higher enthalpy gain than the reference molecules, where the central ferrocene core was replaced by flexible aliphatic as well as rigid benzene linkers. The molecular conformation involved in SPs, the strength of noncovalent interactions, and the process of supramolecular polymerization were investigated through NMR, UV-Vis, XRD and TEM studies. The results demonstrate that ferrocene may act as a good modulator for constructing efficient SPs.
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Affiliation(s)
- Mohammad Umer Lone
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Knowledge City, Sector 81, Manauli PO, 140306, S. A. S. Nagar, Punjab, India
| | - Nihar Sahu
- Department of Chemistry, National Institute of Technology Rourkela, 769008, Rourkela, Odisha, India
| | - Raj Kumar Roy
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Knowledge City, Sector 81, Manauli PO, 140306, S. A. S. Nagar, Punjab, India
| | - Bimalendu Adhikari
- Department of Chemistry, National Institute of Technology Rourkela, 769008, Rourkela, Odisha, India
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8
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Kwon H, Newell BS, Bruns CJ. Redox-switchable host-guest complexes of metallocenes and [8]cycloparaphenylene. NANOSCALE 2022; 14:14276-14285. [PMID: 36134555 DOI: 10.1039/d2nr03852h] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
The cycloparaphenylene (CPP) nanocarbons are an appealing family of macrocyclic organic semiconductors with size-tunable structures and unique optoelectronic properties, which can be further modulated by complexation with guest molecules. While many π-π-stabilized CPP-fullerene host-guest complexes are known, CPPs can also host polycyclic guests stabilized by aromatic CH-π interactions. Here we combine experimental and computational results to report that CH-π interactions can also be tapped to include redox-active metallocene guests in [8]cycloparaphenylene ([8]CPP). Oxidation of a metallocene guest is accompanied by an increase in binding affinity and tilt angle. Crystallographically determined solid-state structures reveal CH-π interactions in the ferrocene complex (Fc⊂[8]CPP) and additional π-π interactions in the cobaltocenium complex (CoCp2+⊂[8]CPP). Functionalizing Fc with oxygen-bearing side chains also improves complex stability to a similar extent as oxidation, due to the formation of CH-O hydrogen bonds with the host's p-phenylene units. This work shows that CH-π bonding can be generalized as a driving force for CPP host-guest complexes and combined with other supramolecular forces to enhance stability. Owing to their semiconducting nature, amenability to functionalization, and reversible redox-dependent behavior, the [8]CPP-metallocene host-guest complexes may expand the library of synthons available for designing bespoke nanoelectronics and artificial molecular machines.
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Affiliation(s)
- Hyejin Kwon
- Department of Mechanical Engineering, University of Colorado Boulder, 1111 Engineering Drive, 427 UCB, Boulder, CO 80309, USA
| | - Brian S Newell
- Materials and Molecular Analysis Center, Analytical Resources Core, Colorado State University, 200 W. Lake Street, Fort Collins, CO 80523, USA
| | - Carson J Bruns
- Department of Mechanical Engineering, University of Colorado Boulder, 1111 Engineering Drive, 427 UCB, Boulder, CO 80309, USA
- ATLAS Institute, University of Colorado Boulder, 1125 18th Street, 320 UCB, Boulder, CO 80309, USA.
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9
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Hoyas Pérez N, Sherin PS, Posligua V, Greenfield JL, Fuchter MJ, Jelfs KE, Kuimova MK, Lewis JEM. Emerging properties from mechanical tethering within a post-synthetically functionalised catenane scaffold. Chem Sci 2022; 13:11368-11375. [PMID: 36320581 PMCID: PMC9533469 DOI: 10.1039/d2sc04101d] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Accepted: 09/06/2022] [Indexed: 09/06/2024] Open
Abstract
Maintaining close spatial proximity of functional moieties within molecular systems can result in fascinating emergent properties. Whilst much work has been done on covalent tethering of functional units for myriad applications, investigations into mechanically linked systems are relatively rare. Formation of the mechanical bond is usually the final step in the synthesis of interlocked molecules, placing limits on the throughput of functionalised architectures. Herein we present the synthesis of a bis-azide [2]catenane scaffold that can be post-synthetically modified using CuAAC 'click' chemistry. In this manner we have been able to access functionalised catenanes from a common precursor and study the properties of electrochemically active, emissive and photodimerisable units within the mechanically interlocked system in comparison to non-interlocked analogues. Our data demonstrates that the greater (co-)conformational flexibility that can be obtained with mechanically interlocked systems compared to traditional covalent tethers paves the way for developing new functional molecules with exciting properties.
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Affiliation(s)
- Nadia Hoyas Pérez
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub 82 Wood Lane London W12 0BZ UK
| | - Peter S Sherin
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub 82 Wood Lane London W12 0BZ UK
| | - Victor Posligua
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub 82 Wood Lane London W12 0BZ UK
| | - Jake L Greenfield
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub 82 Wood Lane London W12 0BZ UK
| | - Matthew J Fuchter
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub 82 Wood Lane London W12 0BZ UK
| | - Kim E Jelfs
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub 82 Wood Lane London W12 0BZ UK
| | - Marina K Kuimova
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub 82 Wood Lane London W12 0BZ UK
| | - James E M Lewis
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub 82 Wood Lane London W12 0BZ UK
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10
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Mondal A, Toyoda R, Costil R, Feringa BL. Chemically Driven Rotatory Molecular Machines. Angew Chem Int Ed Engl 2022; 61:e202206631. [PMID: 35852813 PMCID: PMC9826306 DOI: 10.1002/anie.202206631] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Indexed: 01/11/2023]
Abstract
Molecular machines are at the frontier of biology and chemistry. The ability to control molecular motion and emulating the movement of biological systems are major steps towards the development of responsive and adaptive materials. Amazing progress has been seen for the design of molecular machines including light-induced unidirectional rotation of overcrowded alkenes. However, the feasibility of inducing unidirectional rotation about a single bond as a result of chemical conversion has been a challenging task. In this Review, an overview of approaches towards the design, synthesis, and dynamic properties of different classes of atropisomers which can undergo controlled switching or rotation under the influence of a chemical stimulus is presented. They are categorized as molecular switches, rotors, motors, and autonomous motors according to their type of response. Furthermore, we provide a future perspective and challenges focusing on building sophisticated molecular machines.
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Affiliation(s)
- Anirban Mondal
- Stratingh Institute for Chemistry University of GroningenNijenborgh 49747 AGGroningenThe Netherlands
| | - Ryojun Toyoda
- Stratingh Institute for Chemistry University of GroningenNijenborgh 49747 AGGroningenThe Netherlands
- Department of ChemistryGraduate School of ScienceTohoku University6-3 Aramaki-Aza-AobaAobaku, Sendai980-8578Japan
| | - Romain Costil
- Stratingh Institute for Chemistry University of GroningenNijenborgh 49747 AGGroningenThe Netherlands
| | - Ben L. Feringa
- Stratingh Institute for Chemistry University of GroningenNijenborgh 49747 AGGroningenThe Netherlands
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11
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Ketkov S, Tzeng SY, Rychagova E, Tzeng WB. Ionization of Decamethylmanganocene: Insights from the DFT-Assisted Laser Spectroscopy. Molecules 2022; 27:molecules27196226. [PMID: 36234763 PMCID: PMC9573365 DOI: 10.3390/molecules27196226] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Revised: 09/15/2022] [Accepted: 09/17/2022] [Indexed: 11/24/2022] Open
Abstract
Metallocenes represent one of the most important classes of organometallics with wide prospects for practical use in various fields of chemistry, materials science, molecular electronics, and biomedicine. Many applications of these metal complexes are based on their ability to form molecular ions. We report the first results concerning the changes in the molecular and electronic structure of decamethylmanganocene, Cp*2Mn, upon ionization provided by the high-resolution mass-analyzed threshold ionization (MATI) spectroscopy supported by DFT calculations. The precise ionization energy of Cp*2Mn is determined as 5.349 ± 0.001 eV. The DFT modeling of the MATI spectrum shows that the main structural deformations accompanying the detachment of an electron consist in the elongation of the Mn-C bonds and a change in the Me out-of-plane bending angles. Surprisingly, the DFT calculations predict that most of the reduction in electron density (ED) upon ionization is associated with the hydrogen atoms of the substituents, despite the metal character of the ionized orbital. However, the ED difference isosurfaces reveal a complex mechanism of the charge redistribution involving also the carbon atoms of the molecule.
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Affiliation(s)
- Sergey Ketkov
- G.A. Razuvaev Institute of Organometallic Chemistry of the Russian Academy of Sciences, 49 Tropinin St., 603950 Nizhny Novgorod, Russia
- Correspondence: (S.K.); (W.-B.T.)
| | - Sheng-Yuan Tzeng
- Institute of Atomic and Molecular Sciences, Academia Sinica, 1 Section 4, Roosevelt Road, Taipei 10617, Taiwan
| | - Elena Rychagova
- G.A. Razuvaev Institute of Organometallic Chemistry of the Russian Academy of Sciences, 49 Tropinin St., 603950 Nizhny Novgorod, Russia
| | - Wen-Bih Tzeng
- Institute of Atomic and Molecular Sciences, Academia Sinica, 1 Section 4, Roosevelt Road, Taipei 10617, Taiwan
- Correspondence: (S.K.); (W.-B.T.)
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12
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Mondal A, Toyoda R, Costil R, Feringa BL. Chemically Driven Rotatory Molecular Machines. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202206631] [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)
- Anirban Mondal
- University of Groningen: Rijksuniversiteit Groningen Stratingh Institute for Chemistry NETHERLANDS
| | - Ryojun Toyoda
- University of Groningen: Rijksuniversiteit Groningen Stratingh Institute for Chmistry NETHERLANDS
| | - Romain Costil
- University of Groningen: Rijksuniversiteit Groningen Stratingh Institute for Chemistry NETHERLANDS
| | - Ben L Feringa
- University of Groningen Stratingh Institute for Chemistry, Faculty of Science and Engineering Nijenborgh 4 9747 AG Groningen NETHERLANDS
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13
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Kunde T, Pausch T, Guńka PA, Krzyżanowski M, Kasprzak A, Schmidt BM. Fast, solvent-free synthesis of ferrocene-containing organic cages via dynamic covalent chemistry in the solid state. Chem Sci 2022; 13:2877-2883. [PMID: 35382473 PMCID: PMC8905640 DOI: 10.1039/d1sc06372c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Accepted: 01/31/2022] [Indexed: 11/21/2022] Open
Abstract
A simple, solvent-free synthetic protocol towards the synthesis of organic self-assembled macromolecules has been established. By employing mechanochemistry using glassware readily available to every organic chemist, we were able to synthesise three novel organic cage compounds exemplarily and to speed up the synthesis of a ferrocene-containing macrocycle by a factor of 288 compared to the solution-based synthesis. The structural investigation of the newly synthesised cages revealed different modes of connectivity from using ferrocene-containing aldehydes caused by the free rotation of the cyclopentadienyl units against each other. By extending the facile solvent-free synthesis to ball-milling, even compounds that show lower reactivity could be employed in the dynamic covalent formation of organometallic cage compounds. The presented protocol gives access to otherwise inaccessible structures, speeds up general synthetic workflows, and simultaneously reduces the environmental impact of supramolecular syntheses.
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Affiliation(s)
- Tom Kunde
- Institut für Organische Chemie und Makromolekulare Chemie, Heinrich-Heine-Universität Düsseldorf Universitätsstraße 1 D-40225 Düsseldorf Germany http://www.bmschmidtlab.de
| | - Tobias Pausch
- Institut für Organische Chemie und Makromolekulare Chemie, Heinrich-Heine-Universität Düsseldorf Universitätsstraße 1 D-40225 Düsseldorf Germany http://www.bmschmidtlab.de
| | - Piotr A Guńka
- Faculty of Chemistry, Warsaw University of Technology Noakowskiego Str. 3 00-664 Warsaw Poland
| | - Maurycy Krzyżanowski
- Faculty of Chemistry, Warsaw University of Technology Noakowskiego Str. 3 00-664 Warsaw Poland
| | - Artur Kasprzak
- Faculty of Chemistry, Warsaw University of Technology Noakowskiego Str. 3 00-664 Warsaw Poland
| | - Bernd M Schmidt
- Institut für Organische Chemie und Makromolekulare Chemie, Heinrich-Heine-Universität Düsseldorf Universitätsstraße 1 D-40225 Düsseldorf Germany http://www.bmschmidtlab.de
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14
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Sheppard SA, Bennett TLR, Long NJ. Development and Characterisation of Highly‐Conjugated Functionalised Ferrocenylene Macrocycles. Eur J Inorg Chem 2022. [DOI: 10.1002/ejic.202200055] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
| | | | - Nicholas James Long
- Imperial College of Science Dept. of Chemistry South Kensington SW7 2AZ London UNITED KINGDOM
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15
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Findlay JA, Ross DAW, Crowley JD. Ferrocene Rotary Switches Featuring 2‐Pyridyl‐1,2,3‐triazole “Click” Chelates. Eur J Inorg Chem 2022. [DOI: 10.1002/ejic.202100948] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- James A. Findlay
- Department of Chemistry University of Otago Dunedin 9054 New Zealand
- MacDiarmid Institute for Advanced Materials and Nanotechnology Wellington 6140 New Zealand
| | - Daniel A. W. Ross
- Department of Chemistry University of Otago Dunedin 9054 New Zealand
- MacDiarmid Institute for Advanced Materials and Nanotechnology Wellington 6140 New Zealand
| | - James D. Crowley
- Department of Chemistry University of Otago Dunedin 9054 New Zealand
- MacDiarmid Institute for Advanced Materials and Nanotechnology Wellington 6140 New Zealand
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16
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Brousses R, Maurel V, Mouesca JM, César V, Lugan N, Valyaev DA. Half-sandwich manganese complexes Cp(CO) 2Mn(NHC) as redox-active organometallic fragments. Dalton Trans 2021; 50:14264-14272. [PMID: 34553709 DOI: 10.1039/d1dt02182f] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Oxidation of the half-sandwich MnI complexes Cp(CO)2Mn(NHC) bearing dialkyl-, arylalkyl- and diarylsubstituted N-heterocyclic carbene ligands (NHC = IMe, IMeMes, IMes) affords the corresponding stable MnII radical cations [Cp(CO)2Mn(NHC)](BF4) isolated in 92-95% yield. Systematic X-ray diffraction studies of the series of MnI and MnII NHC complexes revealed the expected characteristic structural changes upon oxidation, namely the elongation of the Mn-CO and Mn-NHC bonds as well as the diminution of the OC-Mn-CO angle. ESR spectra of [Cp(CO)2Mn(IMes)](BF4) in frozen solution (CH2Cl2/toluene 1 : 1, 70 K) allowed the identification of two conformers for this complex and their structural assignment using DFT calculations. The stability of these NHC complexes in both metal oxidation states, moderate oxidation potentials and the ease of detection of MnII species by a variety of spectroscopic techniques (UV-Vis, IR, paramagnetic 1H NMR, and ESR) make these compounds promising objects for applications as redox-active organometallic fragments.
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Affiliation(s)
- Rémy Brousses
- LCC-CNRS, Université de Toulouse, CNRS, Toulouse, France.
| | - Vincent Maurel
- Univ. Grenoble Alpes, CEA, CNRS, INAC, SyMMES, F-38000 Grenoble, France.
| | - Jean-Marie Mouesca
- Univ. Grenoble Alpes, CEA, CNRS, INAC, SyMMES, F-38000 Grenoble, France.
| | - Vincent César
- LCC-CNRS, Université de Toulouse, CNRS, Toulouse, France.
| | - Noël Lugan
- LCC-CNRS, Université de Toulouse, CNRS, Toulouse, France.
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17
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Ketkov SY, Tzeng SY, Rychagova EA, Markin GV, Makarov SG, Tzeng WB. Laser spectroscopic and computational insights into unexpected structural behaviours of sandwich complexes upon ionization. Dalton Trans 2021; 50:10729-10736. [PMID: 34231616 DOI: 10.1039/d1dt01887f] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Transition-metal sandwich complexes play key roles in various fields such as fundamental and applied chemistry; many of their unique properties arise from their ability to form stable or reactive ions. The first mass-analyzed threshold ionization (MATI) spectra of mixed sandwich compounds, (Ch)(Cp)Cr and (Cot)(Cp)Ti (Ch = η7-C7H7, Cp = η5-C5H5, Cot = η8-C8H8), presented in this work provide an extremely accurate description of the electron detachment. The ionization energies of the neutrals and stabilization energies of the metal-ligand interactions upon ionization are derived from the MATI data with an accuracy of 0.0006 eV. In combination with DFT calculations, laser threshold ionization spectroscopy reveals surprisingly different structural variations accompanying the detachment of the non-bonding dz2 electron from the sandwich molecules. The geometry of (Ch)(Cp)Cr remains practically unchanged while the ionization of (Cot)(Cp)Ti causes a noticeable shortening of the inter-ring distance, similar to that resulting from the ionization of a typical antibonding orbital. Electron density analysis throws light on the nature of these amazing effects.
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Affiliation(s)
- Sergey Yu Ketkov
- Institute of Organometallic Chemistry of the Russian Academy of Sciences, 49 Tropinin St., Nizhny Novgorod, 603950 Russian Federation.
| | - Sheng-Yuan Tzeng
- Institute of Atomic and Molecular Sciences, Academia Sinica, 1 Section 4, Roosevelt Road, Taipei, 10617 Taiwan.
| | - Elena A Rychagova
- Institute of Organometallic Chemistry of the Russian Academy of Sciences, 49 Tropinin St., Nizhny Novgorod, 603950 Russian Federation.
| | - Gennady V Markin
- Institute of Organometallic Chemistry of the Russian Academy of Sciences, 49 Tropinin St., Nizhny Novgorod, 603950 Russian Federation.
| | - Sergei G Makarov
- Institute of Organometallic Chemistry of the Russian Academy of Sciences, 49 Tropinin St., Nizhny Novgorod, 603950 Russian Federation.
| | - Wen-Bih Tzeng
- Institute of Atomic and Molecular Sciences, Academia Sinica, 1 Section 4, Roosevelt Road, Taipei, 10617 Taiwan.
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18
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Gao S, Gisbert Y, Erbland G, Abid S, Kammerer C, Venturini A, Rapenne G, Ventura B, Armaroli N. Photophysical properties of 1,2,3,4,5-pentaarylcyclopentadienyl-hydrotris(indazolyl)borate ruthenium(II) complexes. Phys Chem Chem Phys 2021; 23:17049-17056. [PMID: 34346431 DOI: 10.1039/d1cp02261j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The photophysical properties of heteroleptic rotor-like Ru(ii) complexes containing both a cyclopentadienyl-type ligand and a hydrotris(indazolyl)borate chelating unit with a piano stool structure (Ar5L1-Ru-S1 and L3-Ru-S1) and their corresponding subunits have been investigated. The complexes show peculiar absorption features when compared with their related ligands or fragments. L3-Ru-S1 was found to be non-emissive, while Ar5L1-Ru-S1 showed a weak emission with a quantum yield of 0.27%. With the help of DFT calculations, we demonstrate that the new absorption features can be attributed to ruthenium-based charge transfer transitions which involve the π* orbitals of the phenyl substituents of the cyclopentadienyl ligand.
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Affiliation(s)
- Sheng Gao
- Istituto per la Sintesi Organica e la Fotoreattività, Consiglio Nazionale delle Ricerche (CNR-ISOF), Via Gobetti 101, 40129 Bologna, Italy.
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19
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Synthesis and characterization of ferrocene-based thiosemicarbazones along with their computational studies for potential as inhibitors for SARS-CoV-2. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2021. [PMCID: PMC8311418 DOI: 10.1007/s13738-021-02346-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Ferrocene and its derivatives are vital class of organometallic compounds having extensive biological activities. Six novel ferrocene-based thiosemicarbazones have been synthesized through the condensation reaction of acetyl ferrocene with differently substituted thiosemicarbazide. Furthermore, we used state-of-the-art computational docking approach to explore the theoretical aspects for possible antiviral potential of our synthesized compounds. All the six compounds were docked with Mpro protein of SARS-CoV-2, which is very crucial protein for viral replication. Among the six derivatives, compounds 2 and 4 showed higher binding affinities with binding energy of − 6.7 and − 6.9 kcal/mol, respectively. The visualization of intermolecular interactions between synthesized derivatives and Mpro protein illustrated that each of compounds 2 and 4 forms two hydrogen bonds accompanied by important hydrophobic interactions. The comparison of binding affinities with some recently approved drugs like remdesivir, chloroquine and hydroxychloroquine molecules are also made. The calculated binding energies of remdesivir, chloroquine and hydroxychloroquine molecules with Mpro of COVID-19 was found to be − 7.00, − 5.20 and − 5.60 kcal/mol, respectively. The binding energy of compound 4 (− 6.9 kcal/mol) was almost equal to the remdesivir and greater than the binding energies of chloroquine and hydroxychloroquine. It is expected from the current investigation that our synthesized ferrocene-based thiosemicarbazones might have potential for drug against SARS-CoV-2.
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20
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Liu YZ, Mu X, Chan CK, Robeyns K, Wang CC, Singleton ML. Water binding stabilizes stacked conformations of ferrocene containing sheet-like aromatic oligoamides. Org Biomol Chem 2021; 19:5521-5524. [PMID: 33904564 DOI: 10.1039/d1ob00580d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
While water clusters play an essential role in the stability of biological structures, their ability to stabilize synthetic oligomers is less understood. We have synthesized a heptameric sheet-like aromatic oligoamide foldamer with ferrocene as turn unit. It shows strong interactions with water in the solid state and in solution. The water binding limits the fluxional processes resulting from the flexible ferrocene unit, highlighting the importance of such interactions for conformational studies on this class of molecule.
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Affiliation(s)
- Ya-Zhou Liu
- Institute of Condensed Matter and Nanosciences, Université catholique de Louvain, Place Louis Pasteur 1, Louvain-la-Neuve, 1348, Belgium.
| | - Xiao Mu
- Institute of Condensed Matter and Nanosciences, Université catholique de Louvain, Place Louis Pasteur 1, Louvain-la-Neuve, 1348, Belgium.
| | - Cheih-Kai Chan
- Institute of Chemistry, Academia Sinica, Taipei, 115, Taiwan
| | - Koen Robeyns
- Institute of Condensed Matter and Nanosciences, Université catholique de Louvain, Place Louis Pasteur 1, Louvain-la-Neuve, 1348, Belgium.
| | | | - Michael L Singleton
- Institute of Condensed Matter and Nanosciences, Université catholique de Louvain, Place Louis Pasteur 1, Louvain-la-Neuve, 1348, Belgium.
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21
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Kasprzak A, Kasprzak N, Kowalczyk A, Nowicka AM. Ferrocenylated 1,3,5-triphenylbenzenes for the electrochemical detection of various cations or anions. Dalton Trans 2021; 50:8426-8433. [PMID: 34037029 DOI: 10.1039/d1dt01287h] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Three diverse 1,3,5-triphenylbenzene derivatives bearing three ferrocene units (Fc1-Fc3) were used for the construction of electrochemical sensors for the detection of various cations or anions. The obtained derivatives contained imine (Fc1 and Fc2) or amide bonds (Fc3) between 1,3,5-triphenylbenzene and ferrocene skeletons, which further influenced the ability of the as-synthesized ferrocenylated molecules to recognize cations (Cu(ii), Pb(ii), Cr(iii) and Fe(iii); compounds Fc1 and Fc2) or monovalent anions (Br-, I-, ClO4-, NO3-, CH3COO-, and H2PO4-; compound Fc3). In the case of cation recognition, differential pulse voltammetry (DPV) experiments revealed that the Fc1 receptor was characterized by much better sensitivity compared to the Fc2 receptor and the limit of detection (LOD) values ranged from 0.5 to 1.8 μM. Similarly, such very low LOD values (0.7-1.5 μM) were also found in the case of anion recognition by the Fc3 receptor. Importantly, the advantage of the tested Fc receptors is also their long-term stability (sensors were stable at least for 2 months).
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Affiliation(s)
- Artur Kasprzak
- Faculty of Chemistry, Warsaw University of Technology, Noakowskiego Str. 3, 00-664 Warsaw, Poland.
| | - Natalia Kasprzak
- Faculty of Chemistry, University of Warsaw, Pasteura Str. 1, 02-093 Warsaw, Poland.
| | - Agata Kowalczyk
- Faculty of Chemistry, University of Warsaw, Pasteura Str. 1, 02-093 Warsaw, Poland.
| | - Anna M Nowicka
- Faculty of Chemistry, University of Warsaw, Pasteura Str. 1, 02-093 Warsaw, Poland.
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22
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Martín Díaz AE, Lewis JEM. Structural Flexibility in Metal-Organic Cages. Front Chem 2021; 9:706462. [PMID: 34336791 PMCID: PMC8317845 DOI: 10.3389/fchem.2021.706462] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Accepted: 06/02/2021] [Indexed: 01/23/2023] Open
Abstract
Metal-organic cages (MOCs) have emerged as a diverse class of molecular hosts with potential utility across a vast spectrum of applications. With advances in single-crystal X-ray diffraction and economic methods of computational structure optimisation, cavity sizes can be readily determined. In combination with a chemist's intuition, educated guesses about the likelihood of particular guests being bound within these porous structures can be made. Whilst practically very useful, simple rules-of-thumb, such as Rebek's 55% rule, fail to take into account structural flexibility inherent to MOCs that can allow hosts to significantly adapt their internal cavity. An often unappreciated facet of MOC structures is that, even though relatively rigid building blocks may be employed, conformational freedom can enable large structural changes. If it could be exploited, this flexibility might lead to behavior analogous to the induced-fit of substrates within the active sites of enzymes. To this end, in-roads have already been made to prepare MOCs incorporating ligands with large degrees of conformational freedom. Whilst this may make the constitution of MOCs harder to predict, it has the potential to lead to highly sophisticated and functional synthetic hosts.
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Affiliation(s)
| | - James E. M. Lewis
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, London, United Kingdom
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23
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Kosińska AI, Nisiewicz MK, Nowicka AM, Kasprzak A. Electrochemical Recognition of Aromatic Species with Ferrocenylated 1,3,5-Triazine- or 1,3,5-Triphenylbenzene-Containing Highly Organized Molecules. Chempluschem 2021; 86:820-826. [PMID: 34102030 DOI: 10.1002/cplu.202100137] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Revised: 05/20/2021] [Indexed: 11/08/2022]
Abstract
Two ferrocenylated organized molecules comprising 1,3,5-triphenylbenzene (Fc-1) or 2,4,6-triphenyl-1,3,5-triazine skeletons (Fc-2) were used for the first time as receptor layers for the electrochemical recognition of polycyclic aromatic hydrocarbons. While our group recently reported the synthesis of Fc-1, herein the facile synthesis of its 2,4,6-triphenyl-1,3,5-triazine-containing structural analog (Fc-2) is presented. Although the synthesis of Fc-2 was found to be challenging, we achieved a very high yield (89 %) under mild conditions using an acid-catalyzed imine-bond formation reaction in 1,4-dioxane:toluene solvent system. Title compounds were comprehensively characterized with various analytical techniques, including spectroscopic (NMR, FT-IR, FT-Raman spectroscopy) methods, high-resolution mass spectrometry (HRMS), microscopic (SEM) and electrochemical (CV) analyses. Fc-1 and Fc-2 were also used for the construction of the first-of-a-kind recognition layers (electrochemical sensors) dedicated to the recognition of polycyclic aromatic hydrocarbons. Fully constructed innovative sensors enabled the efficient recognition of analytes since the limit of detection (LOD) values were not higher than 2.9 μM. Comparative studies between the working parameters of electrochemical sensors comprising Fc-1 or Fc-2 were also included in this work.
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Affiliation(s)
- Aleksandra I Kosińska
- Faculty of Chemistry, Warsaw University of Technology, Noakowskiego Str. 3, 00-664, Warsaw, Poland
| | - Monika K Nisiewicz
- Faculty of Chemistry, Warsaw University of Technology, Noakowskiego Str. 3, 00-664, Warsaw, Poland.,Faculty of Chemistry, University of Warsaw, Pasteura Str. 1, 02-093, Warsaw, Poland
| | - Anna M Nowicka
- Faculty of Chemistry, University of Warsaw, Pasteura Str. 1, 02-093, Warsaw, Poland
| | - Artur Kasprzak
- Faculty of Chemistry, Warsaw University of Technology, Noakowskiego Str. 3, 00-664, Warsaw, Poland
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24
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Tanaka H, Satake A, Taniguchi M. Direct Observation of Distinctive Electronic States of Ferrocene Moieties in Ferrocene-Bridged Trisporphyrin on Au(111) Using Scanning Tunneling Microscopy/Spectroscopy. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:6468-6474. [PMID: 34003658 DOI: 10.1021/acs.langmuir.1c00602] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The mechanical and electronic properties of ferrocene-bridged trisporphyrin (Fc2P3), which consists of three porphyrin units bridged via a ferrocene (Fc) moiety and adsorbed onto Au(111), were investigated by a pulse injection method using low-temperature scanning tunneling microscopy (STM) and scanning tunneling spectroscopy (STS). STM images revealed that Fc2P3 adsorbed onto Au(111) adopts a linear arrangement with a herringbone reconstruction structure comprising both Fc and porphyrin moieties. Sequential submolecular-resolution STM images and conformational analyses using a simple molecular model revealed that the ferrocene moiety acts as a molecular ball bearing. The electronic states originating from the ferrocene group were clearly observed by bias voltage-dependent STM images, the dI/dV map, and STS. Distinct electronic states are found approximately 1 eV below Ef in the STS spectrum acquired of Fc, whereas these are absent in the porphyrin spectrum.
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Affiliation(s)
- Hiroyuki Tanaka
- The Institute of Scientific and Industrial Research, Osaka University, Ibaraki, Osaka 567-0047, Japan
| | - Akiharu Satake
- Graduate School of Science, Tokyo University of Science, Shinjuku-ku, Tokyo 162-8601, Japan
| | - Masateru Taniguchi
- The Institute of Scientific and Industrial Research, Osaka University, Ibaraki, Osaka 567-0047, Japan
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25
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Schmiel S, Butenschön H. New π‐Extended 1,1′‐Disubstituted Ferrocenes with Thioate and Dithioate End Groups. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100335] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Sinem‐Fatma Schmiel
- Institut für Organische Chemie Leibniz Universität Hannover Schneiderberg 1B 30167 Hannover Germany
| | - Holger Butenschön
- Institut für Organische Chemie Leibniz Universität Hannover Schneiderberg 1B 30167 Hannover Germany
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26
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Nikitin K, Ortin Y, McGlinchey MJ. Dynamics of a Molecular Rotor Exhibiting Local Directional Rotational Preference within Each Enantiomer. J Phys Chem A 2021; 125:2061-2068. [PMID: 33666434 PMCID: PMC8154598 DOI: 10.1021/acs.jpca.0c08476] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Directional internal rotation in molecular systems, generally controlled by chirality, is known to occur in natural and artificial systems driven by light or fueled chemically, but spontaneous directional molecular rotation is believed to be forbidden. We have designed a molecular rotor, whereby ferrocene and triptycene linked by a methylene bridge provide two rotational degrees of freedom. On the basis of experimental observations, in conjunction with computational data, we show that the two different modes of rotation are strongly coupled and the spatial orientation of the bistable ferrocene moiety controls the barrier to its own rotation about the triptycene axis. It is proposed that the barrier to clockwise 120° rotation across each individual triptycene blade is lower in the M-enantiomer and for counterclockwise 120° rotation, it is lower in its P-counterpart. These findings demonstrate the possibility of locally preferred thermal directional intramolecular rotation for each dynamically interconverting enantiomer.
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Affiliation(s)
- Kirill Nikitin
- School of Chemistry, University College Dublin, Belfield, Dublin 4, Ireland
| | - Yannick Ortin
- School of Chemistry, University College Dublin, Belfield, Dublin 4, Ireland
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27
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Kasprzak A, Nisiewicz MK, Nowicka AM. A chromatography-free total synthesis of a ferrocene-containing dendrimer exhibiting the property of recognizing 9,10-diphenylanthracene. Dalton Trans 2021; 50:2483-2492. [PMID: 33514975 DOI: 10.1039/d0dt04261g] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Molecules comprising several ferrocene residues constitute an intriguing group of compounds for various applications. Here, the total synthesis of a new example of a ferrocene-containing dendrimer is presented. The target compound was obtained in excellent combined yield (65%) employing facile, chromatography-free methods at each step. Interesting findings, meeting the dynamic covalent chemistry concept, are reported. Cyclic voltammetry analyses revealed one pair of current signals for the ferrocene moieties. Ultimately, the synthesized ferrocene-containing dendrimer has been used as an innovative recognition material for 9,10-diphenylanthracene, a polycyclic aromatic hydrocarbon, with the limit of detection value equal to 0.06 μM.
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Affiliation(s)
- Artur Kasprzak
- Department Faculty of Chemistry, Warsaw University of Technology, Noakowskiego Str. 3, 00-664 Warsaw, Poland.
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28
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Wang CH, Chen KJ, Wu TH, Chang HK, Tsuchido Y, Sei Y, Chen PL, Horie M. Ring rotation of ferrocene in interlocked molecules in single crystals. Chem Sci 2021; 12:3871-3875. [PMID: 34163655 PMCID: PMC8179491 DOI: 10.1039/d0sc06876d] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Accepted: 01/21/2021] [Indexed: 12/21/2022] Open
Abstract
This work describes unique molecular motions of ferrocene-containing interlocked molecules observed by single-crystal X-ray crystallography. The rotational flexibility of ferrocene is achieved using combinations of ferrocene-tethered ammonium and 30-membered ring dibenzo-crown ether. By contrast, ferrocene was locked in the complex with an 18-membered ring dibenzo-crown ether and CH2Cl2. When the complex was heated at 358 K, CH2Cl2 was removed from the complex, which led to drastic structural changes, including a semieclipsed-to-disordered transition of ferrocene and flipping of the dibenzo-crown ether.
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Affiliation(s)
- Chi-Hsien Wang
- Department of Chemical Engineering, National Tsing Hua University 101, Section 2, Kuang-Fu Road Hsinchu 30013 Taiwan
| | - Kai-Jen Chen
- Department of Chemical Engineering, National Tsing Hua University 101, Section 2, Kuang-Fu Road Hsinchu 30013 Taiwan
| | - Tsung-Huan Wu
- Department of Chemical Engineering, National Tsing Hua University 101, Section 2, Kuang-Fu Road Hsinchu 30013 Taiwan
| | - Hung-Kai Chang
- Department of Chemical Engineering, National Tsing Hua University 101, Section 2, Kuang-Fu Road Hsinchu 30013 Taiwan
| | - Yoshitaka Tsuchido
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology 4259 Nagatsuta, Midori-ku Yokohama 226-8503 Japan
- Department of Chemistry, Faculty of Science, Tokyo University of Science 1-3 Kagurazaka, Shinjuku-ku Tokyo 162-8601 Japan
| | - Yoshihisa Sei
- Open Facility Center, Tokyo Institute of Technology 4259 Nagatsuta, Midori-ku Yokohama 226-8503 Japan
| | - Pei-Lin Chen
- Instrumentation Center, National Tsing Hua University 101, Section 2, Kuang-Fu Road Hsinchu 30013 Taiwan
| | - Masaki Horie
- Department of Chemical Engineering, National Tsing Hua University 101, Section 2, Kuang-Fu Road Hsinchu 30013 Taiwan
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29
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Sha Y, Zhang H, Zhou Z, Luo Z. Stress-responsive properties of metallocenes in metallopolymers. Polym Chem 2021. [DOI: 10.1039/d1py00311a] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This review article combines the field of metallopolymers and stress-responsiveness on a molecular level, namely, metallocenes, as emerging stress-responsive building blocks for materials.
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Affiliation(s)
- Ye Sha
- College of Science
- Nanjing Forestry University
- Nanjing
- PR China
| | - Hao Zhang
- College of Science
- Nanjing Forestry University
- Nanjing
- PR China
| | - Zhou Zhou
- College of Science
- Nanjing Forestry University
- Nanjing
- PR China
| | - Zhenyang Luo
- College of Science
- Nanjing Forestry University
- Nanjing
- PR China
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30
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Abstract
High-yield, chromatography-free syntheses of a ferrocene-templated molecular cage and its Pd-bearing derivative are presented. The formation of a symmetric cage-type structure was confirmed by single-crystal X-ray diffraction analysis. The Pd-bearing cage was used as an innovative catalyst for the efficient synthesis of 1,1'-biphenyls under mild conditions. The presented catalyst is reusable and 1,1'-biphenyls can be obtained efficiently in a gram scale process.
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Affiliation(s)
- Artur Kasprzak
- Faculty of Chemistry, Warsaw University of Technology, Noakowskiego Str. 3, 00-664 Warsaw, Poland.
| | - Piotr A Guńka
- Faculty of Chemistry, Warsaw University of Technology, Noakowskiego Str. 3, 00-664 Warsaw, Poland.
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31
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Ketkov S. Substituent effects on the electronic structures of sandwich compounds: new understandings provided by DFT-assisted laser ionization spectroscopy of bisarene complexes. Dalton Trans 2020; 49:569-577. [PMID: 31903470 DOI: 10.1039/c9dt04440j] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Recent advances on substituent effects in transition metal bisarene complexes studied with high-resolution threshold ionization spectroscopy are reviewed to demonstrate new aspects of the ligand influence on electronic structures of sandwich molecules. Unprecedented accuracy in the determination of ionization energies provided by the laser techniques makes it possible to reveal and describe quantitatively such fine phenomena as isotope effects, the mutual substituent influence or variations of substituent effects on replacing the central metal atom with its Group analogues. In combination with DFT calculations, laser ionization spectroscopy unveils mechanisms of the ligand influence on unique redox properties of sandwich complexes which are of key importance for their practical use.
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Affiliation(s)
- Sergey Ketkov
- G.A. Razuvaev Institute of Organometallic Chemistry RAS, Tropinin St. 49, GSP-445, Nizhny Novgorod 603950, Russian Federation.
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32
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Liu YZ, Wang H, Chan CK, Mu X, Robeyns K, Wang CC, Singleton ML. Structure-Dependent Guest Recognition with Flexible Ferrocene-Based Aromatic Oligoamide β-Sheet Mimics. Chemistry 2020; 26:181-185. [PMID: 31691432 DOI: 10.1002/chem.201904719] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Indexed: 12/27/2022]
Abstract
A series of aromatic oligoamides incorporating an inherently flexible ferrocene dicarboxylic acid unit was synthesized. Solid state, solution, and computational studies on these systems indicated that the aromatic strands can adopt a syn parallel stacked conformation. This results in modular β-sheet-like molecular clefts that display structure-dependent recognition of small polar molecules. NMR and theoretical studies of the host-guest interaction support an in cleft binding mode and allowed the selectivity of the oligomers to be rationalized on the basis of minor changes in functional-group presentation on the edge of the aromatic strands.
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Affiliation(s)
- Ya-Zhou Liu
- Institute of Condensed Matter and Nanosciences, Université catholique de Louvain, Place Louis Pasteur 1, Louvain-la-Neuve, 1348, Belgium
| | - Hu Wang
- Institute of Condensed Matter and Nanosciences, Université catholique de Louvain, Place Louis Pasteur 1, Louvain-la-Neuve, 1348, Belgium
| | - Chieh-Kai Chan
- Institute of Chemistry, Academia Sinica, Taipei, 115, Taiwan
| | - Xiao Mu
- Institute of Condensed Matter and Nanosciences, Université catholique de Louvain, Place Louis Pasteur 1, Louvain-la-Neuve, 1348, Belgium
| | - Koen Robeyns
- Institute of Condensed Matter and Nanosciences, Université catholique de Louvain, Place Louis Pasteur 1, Louvain-la-Neuve, 1348, Belgium
| | | | - Michael L Singleton
- Institute of Condensed Matter and Nanosciences, Université catholique de Louvain, Place Louis Pasteur 1, Louvain-la-Neuve, 1348, Belgium
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33
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Erb W, Kadari L, Al‐Mekhlafi K, Roisnel T, Dorcet V, Radha Krishna P, Mongin F. Functionalization of 3‐Iodo‐
N
,
N
‐Diisopropylferrocene‐Carboxamide, a Pivotal Substrate to Open the Chemical Space to 1,3‐Disubstituted Ferrocenes. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201901393] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- William Erb
- Univ Rennes, CNRS, ISCRInstitut des Sciences Chimiques de Rennes)-UMR 6226, F- 35000 Rennes France
| | - Lingaswamy Kadari
- Univ Rennes, CNRS, ISCRInstitut des Sciences Chimiques de Rennes)-UMR 6226, F- 35000 Rennes France
- Organic Synthesis and Process Chemistry Division, CSIR-Indian Institute of Chemical Technology Hyderabad 500007 India
| | - Khadega Al‐Mekhlafi
- Univ Rennes, CNRS, ISCRInstitut des Sciences Chimiques de Rennes)-UMR 6226, F- 35000 Rennes France
| | - Thierry Roisnel
- Univ Rennes, CNRS, ISCRInstitut des Sciences Chimiques de Rennes)-UMR 6226, F- 35000 Rennes France
| | - Vincent Dorcet
- Univ Rennes, CNRS, ISCRInstitut des Sciences Chimiques de Rennes)-UMR 6226, F- 35000 Rennes France
| | - Palakodety Radha Krishna
- Organic Synthesis and Process Chemistry Division, CSIR-Indian Institute of Chemical Technology Hyderabad 500007 India
| | - Florence Mongin
- Univ Rennes, CNRS, ISCRInstitut des Sciences Chimiques de Rennes)-UMR 6226, F- 35000 Rennes France
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34
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Gaikwad S, Özer MS, Pramanik S, Schmittel M. Three-state switching in a double-pole change-over nanoswitch controlled by redox-dependent self-sorting. Org Biomol Chem 2019; 17:7956-7963. [PMID: 31408072 DOI: 10.1039/c9ob01456j] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The four-arm nanomechanical switch 1 with four different terminals exhibits two switching arms (contacts A and D) and two distinct stations for binding (contacts B and C). In switching State I, the azaterpyridine arm is intramolecularly coordinated to a zinc(ii) porphyrin station (connection A ↔ B) while contact D (a ferrocenylbipyridine unit) and contact C (phenanthroline) remain disconnected. After addition of copper(i) ions (State II) both connections A ↔ B and C ↔ D are established. Upon one-electron oxidation, double-pole change-over switching cleaves both connections A ↔ B & C ↔ D and establishes the new connection A ↔ C (State III). Fully reversible three-state switching (State I → State II → State III → State II → State I) was achieved by adding appropriate chemical and redox stimuli.
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Affiliation(s)
- Sudhakar Gaikwad
- Center of Micro-and Nanochemistry and Engineering, Organische Chemie I, Universität Siegen Adolf-Reichwein-Strasse-2, 57068 Siegen, Germany.
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35
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Axial ligand mediated switchable rotary motions in a ferrocene-bridged diiron(III) porphyrin dimer. J Organomet Chem 2019. [DOI: 10.1016/j.jorganchem.2019.05.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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36
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37
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Basu Baul TS, Dutta D, Rocha BG, Guedes da Silva MC, Lyčka A. Triorganostannyl(IV) benzoates with pendulous framework appended with ferrocene scaffold. J Organomet Chem 2019. [DOI: 10.1016/j.jorganchem.2018.12.009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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38
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Atcher J, Nagai A, Mayer P, Maurizot V, Tanatani A, Huc I. Aromatic β-sheet foldamers based on tertiary squaramides. Chem Commun (Camb) 2019; 55:10392-10395. [DOI: 10.1039/c9cc04849a] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Suitably substituted aryl-methyl tertiary squaramides are convenient and efficient at promoting hairpin turns in aromatic amide sequences.
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Affiliation(s)
- Joan Atcher
- Department of Pharmacy and Center for Integrated Protein Science
- Ludwig-Maximilians-Universität
- Germany
- CBMN (UMR5248)
- Université de Bordeaux-CNRS-IPB
| | - Aki Nagai
- CBMN (UMR5248)
- Université de Bordeaux-CNRS-IPB
- Institut Européen de Chimie et Biologie
- 33600 Pessac
- France
| | - Peter Mayer
- Department of Chemistry
- Ludwig-Maximilians-Universität
- Germany
| | - Victor Maurizot
- CBMN (UMR5248)
- Université de Bordeaux-CNRS-IPB
- Institut Européen de Chimie et Biologie
- 33600 Pessac
- France
| | - Aya Tanatani
- Department of Chemistry
- Faculty of Science
- Ochnomizu University
- Tokyo 112-8610
- Japan
| | - Ivan Huc
- Department of Pharmacy and Center for Integrated Protein Science
- Ludwig-Maximilians-Universität
- Germany
- CBMN (UMR5248)
- Université de Bordeaux-CNRS-IPB
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39
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Nikitin K, Ortin Y, Müller-Bunz H, Gilheany DG, McGlinchey MJ. Syntheses, Structures and Dynamics of 9-(Ferrocenylmethyl)anthracene and Related Molecular Gears: Phosphorus to the Rescue! European J Org Chem 2018. [DOI: 10.1002/ejoc.201800938] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Kirill Nikitin
- School of Chemistry; University College Dublin; 4 Belfield, Dublin Ireland
| | - Yannick Ortin
- School of Chemistry; University College Dublin; 4 Belfield, Dublin Ireland
| | - Helge Müller-Bunz
- School of Chemistry; University College Dublin; 4 Belfield, Dublin Ireland
| | - Declan G. Gilheany
- School of Chemistry; University College Dublin; 4 Belfield, Dublin Ireland
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40
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41
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Tazi M, Hedidi M, Erb W, Halauko YS, Ivashkevich OA, Matulis VE, Roisnel T, Dorcet V, Bentabed-Ababsa G, Mongin F. Fluoro- and Chloroferrocene: From 2- to 3-Substituted Derivatives. Organometallics 2018. [DOI: 10.1021/acs.organomet.8b00384] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Mehdi Tazi
- Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes)-UMR 6226, F-35000 Rennes, France
| | - Madani Hedidi
- Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes)-UMR 6226, F-35000 Rennes, France
- Laboratoire de Synthèse Organique Appliquée, Faculté des Sciences Exactes et Appliquées, Université Oran 1 Ahmed Ben Bella, BP 1524 El M’Naouer, 31000 Oran, Algeria
| | - William Erb
- Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes)-UMR 6226, F-35000 Rennes, France
| | - Yury S. Halauko
- UNESCO Chair of Belarusian State University, 14 Leningradskaya Str., Minsk 220030, Belarus
| | - Oleg A. Ivashkevich
- UNESCO Chair of Belarusian State University, 14 Leningradskaya Str., Minsk 220030, Belarus
| | - Vadim E. Matulis
- Research Institute for Physico-Chemical Problems of Belarusian State University, 14 Leningradskaya Str., Minsk 220030, Belarus
| | - Thierry Roisnel
- Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes)-UMR 6226, F-35000 Rennes, France
| | - Vincent Dorcet
- Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes)-UMR 6226, F-35000 Rennes, France
| | - Ghenia Bentabed-Ababsa
- Laboratoire de Synthèse Organique Appliquée, Faculté des Sciences Exactes et Appliquées, Université Oran 1 Ahmed Ben Bella, BP 1524 El M’Naouer, 31000 Oran, Algeria
| | - Florence Mongin
- Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes)-UMR 6226, F-35000 Rennes, France
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42
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Timofeev SV, Anufriev SA, Sivaev IB, Bregadze VI. Synthesis of cobalt bis(8-methylthio-1,2-dicarbollide)- pentacarbonyltungsten complexes. Russ Chem Bull 2018. [DOI: 10.1007/s11172-018-2112-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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43
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Kuwabara T, Tezuka R, Ishikawa M, Yamazaki T, Kodama S, Ishii Y. Ring Slippage and Dissociation of Pentamethylcyclopentadienyl Ligand in an (η5-Cp*)Ir Complex with a κ3-O,C,O Tridentate Calix[4]arene Ligand under Mild Conditions. Organometallics 2018. [DOI: 10.1021/acs.organomet.8b00257] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Takuya Kuwabara
- Department of Applied Chemistry, Faculty of Science and Engineering, Chuo University, 1-13-27 Kasuga,
Bunkyo-ku, Tokyo 112-8551 Japan
| | - Ryogen Tezuka
- Department of Applied Chemistry, Faculty of Science and Engineering, Chuo University, 1-13-27 Kasuga,
Bunkyo-ku, Tokyo 112-8551 Japan
| | - Mikiya Ishikawa
- Department of Applied Chemistry, Faculty of Science and Engineering, Chuo University, 1-13-27 Kasuga,
Bunkyo-ku, Tokyo 112-8551 Japan
| | - Takuya Yamazaki
- Department of Applied Chemistry, Faculty of Science and Engineering, Chuo University, 1-13-27 Kasuga,
Bunkyo-ku, Tokyo 112-8551 Japan
| | - Shintaro Kodama
- Department of Applied Chemistry, Faculty of Science and Engineering, Chuo University, 1-13-27 Kasuga,
Bunkyo-ku, Tokyo 112-8551 Japan
| | - Youichi Ishii
- Department of Applied Chemistry, Faculty of Science and Engineering, Chuo University, 1-13-27 Kasuga,
Bunkyo-ku, Tokyo 112-8551 Japan
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44
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Anufriev SA, Erokhina SA, Suponitsky KY, Anisimov AA, Laskova JN, Godovikov IA, Fabrizi de Biani F, Corsini M, Sivaev IB, Bregadze VI. Synthesis and structure of bis(methylsulfanyl) derivatives of iron bis(dicarbollide). J Organomet Chem 2018. [DOI: 10.1016/j.jorganchem.2018.04.019] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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45
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Jiang N, Yuan Z, Li T, Zhu Y, Chen YS, Lin L, Zhang J, Chan YT, Wang J. Synthesis and Characterization of Ferrocene Based Hemicages. J Org Chem 2018; 83:4824-4830. [PMID: 29595264 DOI: 10.1021/acs.joc.8b00146] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We present a series of tripodal ligands L1-3, which fold into hemicages C1-3 by using coordination-driven dynamic combinational chemistry. The identities of these hemicages were characterized using 1H NMR, 1H-1H COSY, DOSY, and ESI-TWIM-MS. Free rotation of the ferrocene structural units in the ligands affords an adaptable directionality, which is essential for the construction of these hemicages. Encapsulation of adamantane by C2 indicates the presence of a well-defined inner cavity as the binding pocket.
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Affiliation(s)
- Nianqiang Jiang
- School of Chemistry , Sun Yat-Sen University , Guangzhou 510275 , People's Republic of China
| | - Ziyong Yuan
- School of Chemistry , Sun Yat-Sen University , Guangzhou 510275 , People's Republic of China
| | - Tao Li
- School of Chemistry , Sun Yat-Sen University , Guangzhou 510275 , People's Republic of China
| | - Yanpeng Zhu
- School of Chemistry , Sun Yat-Sen University , Guangzhou 510275 , People's Republic of China
| | - Yu-Sheng Chen
- Department of Chemistry , National Taiwan University , Taipei 10617 , Taiwan, Republic of China
| | - Liqiong Lin
- School of Chemistry , Sun Yat-Sen University , Guangzhou 510275 , People's Republic of China
| | - Jingrui Zhang
- School of Chemistry , Sun Yat-Sen University , Guangzhou 510275 , People's Republic of China
| | - Yi-Tsu Chan
- Department of Chemistry , National Taiwan University , Taipei 10617 , Taiwan, Republic of China
| | - Jiaobing Wang
- School of Chemistry , Sun Yat-Sen University , Guangzhou 510275 , People's Republic of China
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46
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Findlay JA, McAdam CJ, Sutton JJ, Preston D, Gordon KC, Crowley JD. Metallosupramolecular Architectures Formed with Ferrocene-Linked Bis-Bidentate Ligands: Synthesis, Structures, and Electrochemical Studies. Inorg Chem 2018; 57:3602-3614. [PMID: 29381330 DOI: 10.1021/acs.inorgchem.7b02503] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The self-assembly of ligands of different geometries with metal ions gives rise to metallosupramolecular architectures of differing structural types. The rotational flexibility of ferrocene allows for conformational diversity, and, as such, self-assembly processes with 1,1'-disubstituted ferrocene ligands could lead to a variety of interesting architectures. Herein, we report a small family of three bis-bidentate 1,1'-disubstituted ferrocene ligands, functionalized with either 2,2'-bipyridine or 2-pyridyl-1,2,3-triazole chelating units. The self-assembly of these ligands with the (usually) four-coordinate, diamagnetic metal ions Cu(I), Ag(I), and Pd(II) was examined using a range of techniques including 1H and DOSY NMR spectroscopies, high-resolution electrospray ionization mass spectrometry, X-ray crystallography, and density functional theory calculations. Additionally, the electrochemical properties of these redox-active metallosupramolecular assemblies were examined using cyclic voltammetry and differential pulse voltammetry. The copper(I) complexes of the 1,1'-disubstituted ferrocene ligands were found to be coordination polymers, while the silver(I) and palladium(II) complexes formed discrete [1 + 1] or [2 + 2] metallomacrocyclic architectures.
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Affiliation(s)
- James A Findlay
- Department of Chemistry , University of Otago , P.O. Box 56, Dunedin 9054 , New Zealand
| | - C John McAdam
- Department of Chemistry , University of Otago , P.O. Box 56, Dunedin 9054 , New Zealand
| | - Joshua J Sutton
- Department of Chemistry , University of Otago , P.O. Box 56, Dunedin 9054 , New Zealand
| | - Dan Preston
- Department of Chemistry , University of Otago , P.O. Box 56, Dunedin 9054 , New Zealand
| | - Keith C Gordon
- Department of Chemistry , University of Otago , P.O. Box 56, Dunedin 9054 , New Zealand
| | - James D Crowley
- Department of Chemistry , University of Otago , P.O. Box 56, Dunedin 9054 , New Zealand
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47
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Saito M, Matsunaga N, Hamada J, Furukawa S, Minoura M, Wegner S, Barthel J, Janiak C. Heterobimetallic triple-decker complexes derived from a dianionic aromatic stannole ligand. Dalton Trans 2018; 47:8892-8896. [DOI: 10.1039/c8dt01455h] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A neutral heterobimetallic triple-decker stannole complex was prepared by the reaction of an anionic ruthenocene bearing a stannole dianionic ligand with [Rh(cod)Cl]2 (cod = 1,5-cyclooctadiene), and the resulting Ru–Rh complex exhibits an electronic property different from those of the corresponding Ru–Ru and Rh–Rh complexes.
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Affiliation(s)
- Masaichi Saito
- Department of Chemistry
- Graduate School of Science and Engineering
- Saitama University
- Saitama
- Japan
| | - Naoki Matsunaga
- Department of Chemistry
- Graduate School of Science and Engineering
- Saitama University
- Saitama
- Japan
| | - Jumpei Hamada
- Department of Chemistry
- Graduate School of Science and Engineering
- Saitama University
- Saitama
- Japan
| | - Shunsuke Furukawa
- Department of Chemistry
- Graduate School of Science and Engineering
- Saitama University
- Saitama
- Japan
| | - Mao Minoura
- Department of Chemistry
- College of Science
- Rikkyo University
- Tokyo
- Japan
| | - Susann Wegner
- Institut für Anorganische Chemie und Strukturchemie
- Heinrich-Heine-Universität Düsseldorf
- D-40225 Düsseldorf
- Germany
| | - Juri Barthel
- Gemeinschaftslabor für Elektronenmikroskopie RWTH-Aachen
- Ernst Ruska-Centrum für Mikroskopie und Spektroskopie mit Elektronen
- Forschungszentrum Jülich GmbH
- D-52425 Jülich
- Germany
| | - Christoph Janiak
- Institut für Anorganische Chemie und Strukturchemie
- Heinrich-Heine-Universität Düsseldorf
- D-40225 Düsseldorf
- Germany
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48
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Gaikwad S, Pramanik S, De S, Schmittel M. A high-speed network of nanoswitches for on/off control of catalysis. Dalton Trans 2018; 47:1786-1790. [DOI: 10.1039/c7dt04695b] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Copper(i) ion translocation is the key for fast and reliable communication between networked devices in the catalytic machinery.
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Affiliation(s)
- Sudhakar Gaikwad
- Center of Micro and Nanochemistry and Engineering
- Organische Chemie I
- Universität Siegen
- D-57068 Siegen
- Germany
| | - Susnata Pramanik
- Center of Micro and Nanochemistry and Engineering
- Organische Chemie I
- Universität Siegen
- D-57068 Siegen
- Germany
| | - Soumen De
- Center of Micro and Nanochemistry and Engineering
- Organische Chemie I
- Universität Siegen
- D-57068 Siegen
- Germany
| | - Michael Schmittel
- Center of Micro and Nanochemistry and Engineering
- Organische Chemie I
- Universität Siegen
- D-57068 Siegen
- Germany
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49
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Findlay JA, Crowley JD. Functional nanomachines: Recent advances in synthetic molecular machinery. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2017.12.036] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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50
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López-Mayorga B, Sandoval-Chávez CI, Carreón-Castro P, Ugalde-Saldívar VM, Cortés-Guzmán F, López-Cortés JG, Ortega-Alfaro MC. Ferrocene amphiphilic D–π–A dyes: synthesis, redox behavior and determination of band gaps. NEW J CHEM 2018. [DOI: 10.1039/c8nj00787j] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
We reported the synthesis, optical and redox behavior of six ferrocenyl D–π–A dyes. Optical and electrochemical band gaps were determined and corroborated by TD-DFT calculations. Compounds4exhibit the smallest band gap of this series.
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Affiliation(s)
- B. López-Mayorga
- Instituto de Ciencias Nucleares
- Universidad Nacional Autónoma de México
- Circuito Exterior
- Ciudad Universitaria
- Cd. Mx
| | - C. I. Sandoval-Chávez
- Instituto de Ciencias Nucleares
- Universidad Nacional Autónoma de México
- Circuito Exterior
- Ciudad Universitaria
- Cd. Mx
| | - P. Carreón-Castro
- Instituto de Ciencias Nucleares
- Universidad Nacional Autónoma de México
- Circuito Exterior
- Ciudad Universitaria
- Cd. Mx
| | | | - F. Cortés-Guzmán
- Instituto de Química
- Universidad Nacional Autónoma de México
- Circuito Exterior
- Cd. Universitaria
- Cd. Mx
| | - J. G. López-Cortés
- Instituto de Química
- Universidad Nacional Autónoma de México
- Circuito Exterior
- Cd. Universitaria
- Cd. Mx
| | - M. C. Ortega-Alfaro
- Instituto de Ciencias Nucleares
- Universidad Nacional Autónoma de México
- Circuito Exterior
- Ciudad Universitaria
- Cd. Mx
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