1
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Martin K, Aharon T, Mastropasqua Talamo M, Hauser A, Bürgi T, Vanthuyne N, Caricato M, Avarvari N. Helicene Appended Benzothiadiazoles as Chiral Emitters. Chemistry 2024; 30:e202401413. [PMID: 38770893 DOI: 10.1002/chem.202401413] [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: 04/11/2024] [Revised: 05/20/2024] [Accepted: 05/21/2024] [Indexed: 05/22/2024]
Abstract
A homologous series of 4,7-bis(aryl) substituted benzothiadiazole (BTD) compounds, containing the helicenic derivatives bis([4]helicene), bis([5]helicene) and bis([6]helicene), have been prepared upon a double Suzuki coupling between 3,6-bis(pinacolyl-borane)-BTD and the corresponding bromo-aryl precursors. The single crystal X-ray structure of the bis([4]helicene) compound shows the existence of both helicities (M) and (P) on the same molecule. All the compounds of the series are highly emissive in solution, with quantum yields of the emission ranging from 50 to 91 %. The enantiopure compounds (M,M) and (P,P) for the BTD-bis([6]helicene) have been prepared from the corresponding enantiopure 2-bromo-[6]helicene precursors. Their chiroptical properties have been investigated in correlation with density functional theory (DFT) calculations, which allowed to confidently assign the absolute configuration of the helicene arms and to characterize the different electronic transitions, including the low energy charge transfer excitation from helicenes to BTD. The enantiomerically pure fluorophores (M,M)- and (P,P)-BTD-bis([6]helicene), which exist in solution as two main conformers, according to the DFT calculations, show CPL activity in solution, with glum factors of ≈1.7×10-3 at λem=525 nm, and also in the solid state, with glum factors of ≈1.2×10-3 in spite of the strong decrease of the quantum efficiency.
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Affiliation(s)
- Kévin Martin
- Univ Angers, CNRS, MOLTECH-Anjou SFR MATRIX, F-49000, Angers, France
| | - Tal Aharon
- Department of Chemistry, University of Kansas, 1567 Irving Hill Road, Lawrence, Kansas, 66045, United States of America
- TetraScience, 294 Washington St, Boston, MA 02108, United States of America
| | | | - Andreas Hauser
- Department of Physical Chemistry, University of Geneva, 30 Quai Ernest Ansermet, CH-1211, Geneva, Switzerland
| | - Thomas Bürgi
- Department of Physical Chemistry, University of Geneva, 30 Quai Ernest Ansermet, CH-1211, Geneva, Switzerland
| | - Nicolas Vanthuyne
- Aix Marseille Univ, CNRS, Centrale Marseille UAR, 1739, FSCM, Chiropole, Marseille, France
| | - Marco Caricato
- Department of Chemistry, University of Kansas, 1567 Irving Hill Road, Lawrence, Kansas, 66045, United States of America
| | - Narcis Avarvari
- Univ Angers, CNRS, MOLTECH-Anjou SFR MATRIX, F-49000, Angers, France
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2
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Bogdan A, Moraru IT, Vanthuyne N, Auban-Senzier P, Grosu I, Avarvari N, Pop F. Chiral Spiro-Tetrathiafulvalenes: Synthesis, Chiroptical Properties, Conformational Issues and Charge Transfer Complexes. Chemistry 2024; 30:e202400564. [PMID: 38525656 DOI: 10.1002/chem.202400564] [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: 02/09/2024] [Revised: 03/14/2024] [Accepted: 03/18/2024] [Indexed: 03/26/2024]
Abstract
Within this work we have investigated spiro-based tetrathiafulvalenes (TTFs) obtained as mixtures of stereoisomers from racemic spiro[5.5]undeca-1,8-dien-3-one. Compared to previously described spiro-TTFs, enantiomeric and diastereoisomeric forms have been here separated by chiral HPLC and fully characterized both experimentally and theoretically. The two types of spiro-based chiral derivatives contain either one (2) or three (1) chiral centres out of each one is spiro-type. Experimental CD, supported by TD-DFT calculations, shows differences in the optical activity between the 1 and 2 and their intermediates. The low optical activity of 2 and 3 (spiro alone chirality) was attributed to the presence of two conformers in the solution (ax and eq) of opposite Cotton effect whereas in the case of 1 and 5 (spiro and stereogenic centres) the spiro chirality seems to be responsible of the Cotton effect in the high energy region whereas the R and S chirality in the low energy region. Racemic and enantiopure forms have been successfully used for the synthesis of charge transfer complexes with tetracyanoquinodimethane (TCNQ) based acceptors.
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Affiliation(s)
- Alexandra Bogdan
- Univ Angers, CNRS, MOLTECH-Anjou, SFR MATRIX, F-, 49000, Angers, France
- Babes-Bolyai University, Faculty of Chemistry and Chemical Engineering, Department of Chemistry and SOOMCC, Cluj-Napoca, 11 Arany Janos Str, 400028, Cluj-Napoca, Romania
| | - Ionut-Tudor Moraru
- Babeş-Bolyai University, Faculty of Chemistry and Chemical Engineering, Department of Chemistry, 11 Arany Janos Str, 400028, Cluj-Napoca, Romania
| | - Nicolas Vanthuyne
- Aix Marseille Université, CNRS, Centrale Marseille, UAR, 1739, FSCM, Chiropole, Marseille, France
| | - Pascale Auban-Senzier
- Université Paris-Saclay, CNRS, UMR 8502, Laboratoire de Physique des Solides, 91405, Orsay, France
| | - Ion Grosu
- Babes-Bolyai University, Faculty of Chemistry and Chemical Engineering, Department of Chemistry and SOOMCC, Cluj-Napoca, 11 Arany Janos Str, 400028, Cluj-Napoca, Romania
| | - Narcis Avarvari
- Univ Angers, CNRS, MOLTECH-Anjou, SFR MATRIX, F-, 49000, Angers, France
| | - Flavia Pop
- Univ Angers, CNRS, MOLTECH-Anjou, SFR MATRIX, F-, 49000, Angers, France
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3
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Matsuo Y, Maeda C, Tsutsui Y, Tanaka T, Seki S. Synthesis of Closed-Heterohelicenes Interconvertible between Their Monomeric and Dimeric Forms. Angew Chem Int Ed Engl 2023; 62:e202314968. [PMID: 37883214 DOI: 10.1002/anie.202314968] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2023] [Revised: 10/25/2023] [Accepted: 10/26/2023] [Indexed: 10/28/2023]
Abstract
Oxidative fusion reaction of cyclic heteroaromatic pentads consisting of pyrrole and thiophene gave closed-heterohelicene monomers and dimers depending on the oxidation conditions. Specifically, oxidation with [bis(trifluoroacetoxy)iodo]benzene (PIFA) gave closed-[7]helicene dimers connected at the β-position of one of the pyrrole units with remarkably elongated C-C bonds of about 1.60 Å. Although this bond was intact against thermal and physical activations, homolytic bond dissociation took place in DMSO upon irradiation with UV light to give the corresponding monomers. Thus, interconversion between the closed-helicene monomer and dimer was achieved. The optically pure dimer was photo-dissociated into the monomers associated with a turn-on of circularly polarized luminescence (CPL).
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Affiliation(s)
- Yusuke Matsuo
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Chihiro Maeda
- Division of Applied Chemistry, Graduate School of Natural Science and Technology, Okayama University, Tsushima, Okayama 700-8530, Japan
| | - Yusuke Tsutsui
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan
- JST-PRESTO, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
| | - Takayuki Tanaka
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Shu Seki
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan
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4
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Zlobin IS, Nelyubina YV, Novikov VV. Molecular Compounds in Spintronic Devices: An Intricate Marriage of Chemistry and Physics. Inorg Chem 2022; 61:12919-12930. [PMID: 35930627 DOI: 10.1021/acs.inorgchem.2c00859] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Spintronics, a flourishing new field of microelectronics, uses the electron spin for reading and writing information in modern computers and other spintronic devices with a low power consumption and high reliability. In a quest to increase the productivity of such devices, the use of molecular materials as a spacer layer allowed them to perform equally well or even better than conventional all-inorganic heterostructures from metals, alloys, or inorganic semiconductors. In this review, we survey various classes of chemical compounds that have already been tested for this purpose─from organic compounds and coordination complexes to organic-inorganic hybrid materials─since the creation of the first molecule-based spintronic device in 2002. Although each class has its advantages, drawbacks, and applications in molecular spintronics, together they allowed nonchemists to gain insights into spin-related effects and to propose new concepts in the design and fabrication of highly efficient spintronic devices. Other molecular compounds that chemistry could offer in great numbers may soon emerge as suitable spacers or even electrodes in flexible magnetic field sensors, nonvolatile memories, and multifunctional spintronic devices.
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Affiliation(s)
- Ivan S Zlobin
- A.N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences (INEOS RAS), Vavilova Str. 28, Moscow 119991, Russia.,Moscow Institute of Physics and Technology (National Research University), Institutskiy Per. 9, Dolgoprudny, Moscow Region 141700, Russia
| | - Yulia V Nelyubina
- A.N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences (INEOS RAS), Vavilova Str. 28, Moscow 119991, Russia.,Moscow Institute of Physics and Technology (National Research University), Institutskiy Per. 9, Dolgoprudny, Moscow Region 141700, Russia
| | - Valentin V Novikov
- A.N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences (INEOS RAS), Vavilova Str. 28, Moscow 119991, Russia.,Moscow Institute of Physics and Technology (National Research University), Institutskiy Per. 9, Dolgoprudny, Moscow Region 141700, Russia
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5
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Abhervé A, Mastropasqua Talamo M, Vanthuyne N, Zinna F, Di Bari L, Grasser M, Le Guennic B, Avarvari N. Chiral Emissive Lanthanide Complexes from Enantiopure [6]Helicene‐bis(pyrazolyl)‐pyridine Ligands. Eur J Inorg Chem 2022. [DOI: 10.1002/ejic.202200010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
| | | | | | - Francesco Zinna
- University of Pisa: Universita degli Studi di Pisa Chemistry ITALY
| | - Lorenzo Di Bari
- Università di Pisa: Universita degli Studi di Pisa Chemistry ITALY
| | | | | | - Narcis Avarvari
- University of Angers UMR 6200 CNRS-Univ. d'Angers 2 Bd. LavoisierBat. K 49045 Angers FRANCE
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6
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zigon N, Avarvari N. [4]Helicene based anions in electrocrystallization with tetrachalcogenafulvalene donors. CrystEngComm 2022. [DOI: 10.1039/d2ce00091a] [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
Electrocrystallization is an ubiquitous tool for the assembly of ions formed in situ from electroactive precursors into ordered crystalline macroscopic assemblies. Using tetrachalcogeno-fulvalene derivatives, many conducting and superconducting materials have...
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7
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Duan C, Zhang J, Xiang J, Yang X, Gao X. Design, Synthesis and Properties of Azulene-Based BN-[4]Helicenes※. ACTA CHIMICA SINICA 2022. [DOI: 10.6023/a21110508] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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8
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Baudillon M, Cauchy T, Vanthuyne N, Avarvari N, Pop F. Configurationally stable dithia[7]helicene and dithia-quasi[8]circulene fused dithiolones. Org Chem Front 2022. [DOI: 10.1039/d2qo00921h] [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
Stereochemically stable dithia[7]helicene and dithia-quasi[8]circulene decorated with 1,3-dithiol-2-one motifs were synthesized by simple and double oxidative dehydrocyclisation.
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Affiliation(s)
- Maxime Baudillon
- Univ Angers, CNRS, MOLTECH-Anjou, SFR MATRIX, F-49000 Angers, France
| | - Thomas Cauchy
- Univ Angers, CNRS, MOLTECH-Anjou, SFR MATRIX, F-49000 Angers, France
| | - Nicolas Vanthuyne
- Aix Marseille Université, CNRS, Centrale Marseille, iSm2, Marseille, France
| | - Narcis Avarvari
- Univ Angers, CNRS, MOLTECH-Anjou, SFR MATRIX, F-49000 Angers, France
| | - Flavia Pop
- Univ Angers, CNRS, MOLTECH-Anjou, SFR MATRIX, F-49000 Angers, France
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9
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Reactivity and Mechanistic Issues in the Photocyclization of Dihalostyryl‐Naphthalenes towards Halo‐[4]helicenes: A Transposition on a Mallory Theme. CHEMPHOTOCHEM 2021. [DOI: 10.1002/cptc.202100215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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10
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Kos M, Rodríguez R, Storch J, Sýkora J, Caytan E, Cordier M, Císařová I, Vanthuyne N, Williams JAG, Žádný J, Církva V, Crassous J. Enantioenriched Ruthenium-Tris-Bipyridine Complexes Bearing One Helical Bipyridine Ligand: Access to Fused Multihelicenic Systems and Chiroptical Redox Switches. Inorg Chem 2021; 60:11838-11851. [PMID: 34297562 DOI: 10.1021/acs.inorgchem.1c01379] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The synthesis and photophysical and chiroptical properties of novel aza[n]helicenes (6a-d, 10a,b, n = 4-7) substituted with one or two 2-pyridyl groups are described. The preparation was performed via an adapted Mallory reaction using aromatic imines as precursors. The obtained novel class of helical 2,2'-bipyridine ligands was then coordinated to Ru(bipy)22+ units, thus affording the first diastereomerically and enantiomerically pure [RuL(bipy)2]2+ (11a,c, L = 6a,c) or [Ru2L'(bipy)4]4+ (12, L' = 10b) complexes. The topology and stereochemistry of these novel metal-based helical architectures were studied in detail, notably using X-ray crystallography. Interestingly, the coordination to ruthenium(II) enabled the preparation of fused multihelical systems incorporating aza- and ruthena-helicenes within the same scaffold. The photophysical, chiroptical, and redox properties of these complexes were examined in detail, and efficient redox-triggered chiroptical switching activity was evidenced.
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Affiliation(s)
- Martin Kos
- Institute of Chemical Process Fundamentals of the Czech Academy of Sciences, v. v. i., Rozvojová 135, 165 02 Prague 6, Czech Republic
| | - Rafael Rodríguez
- Univ Rennes CNRS, , ISCR-UMR 6226 ScanMat-UMS 2001, 35000 Rennes, France
| | - Jan Storch
- Institute of Chemical Process Fundamentals of the Czech Academy of Sciences, v. v. i., Rozvojová 135, 165 02 Prague 6, Czech Republic
| | - Jan Sýkora
- Institute of Chemical Process Fundamentals of the Czech Academy of Sciences, v. v. i., Rozvojová 135, 165 02 Prague 6, Czech Republic
| | - Elsa Caytan
- Univ Rennes CNRS, , ISCR-UMR 6226 ScanMat-UMS 2001, 35000 Rennes, France
| | - Marie Cordier
- Univ Rennes CNRS, , ISCR-UMR 6226 ScanMat-UMS 2001, 35000 Rennes, France
| | - Ivana Císařová
- Department of Inorganic Chemistry, Faculty of Science, Charles University in Prague, Hlavova 2030, 128 40 Prague 2, Czech Republic
| | - Nicolas Vanthuyne
- Aix Marseille Université, Centrale Marseille, CNRS, iSm2, UMR 7313 Marseille, France
| | | | - Jaroslav Žádný
- Institute of Chemical Process Fundamentals of the Czech Academy of Sciences, v. v. i., Rozvojová 135, 165 02 Prague 6, Czech Republic
| | - Vladimír Církva
- Institute of Chemical Process Fundamentals of the Czech Academy of Sciences, v. v. i., Rozvojová 135, 165 02 Prague 6, Czech Republic
| | - Jeanne Crassous
- Univ Rennes CNRS, , ISCR-UMR 6226 ScanMat-UMS 2001, 35000 Rennes, France
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11
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Abstract
This short review article provides the reader with a summary of the history of organic conductors. To retain a neutral and objective point of view regarding the history, background, novelty, and details of each research subject within this field, a thousand references have been cited with full titles and arranged in chronological order. Among the research conducted over ~70 years, topics from the last two decades are discussed in more detail than the rest. Unlike other papers in this issue, this review will help readers to understand the origin of each topic within the field of organic conductors and how they have evolved. Due to the advancements achieved over these 70 years, the field is nearing new horizons. As history is often a reflection of the future, this review is expected to show the future directions of this research field.
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12
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Hafedh N, Asghar BH, Aloui F. Novel functional [4]helicenes through a photooxidation pathway. Investigation of the absorption and fluorescence in solution. CR CHIM 2021. [DOI: 10.5802/crchim.70] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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13
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A Multiple Chirality Switching Device for Spatial Light Modulators. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202009916] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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14
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Yang G, Yu Y, Yang B, Lu T, Cai Y, Yin H, Zhang H, Zhang NN, Li L, Zhang YM, Zhang SXA. A Multiple Chirality Switching Device for Spatial Light Modulators. Angew Chem Int Ed Engl 2021; 60:2018-2023. [PMID: 32885573 DOI: 10.1002/anie.202009916] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2020] [Revised: 08/24/2020] [Indexed: 12/25/2022]
Abstract
A new and simple strategy towards electric-field-driven multiple chirality switching device has been designed and fabricated by combining a newly synthesized base-responsive chiroptical polymer switch (R-FLMA) and p-benzoquinone (p-BQ) via proton-coupled electron transfer (PCET) mechanism. Clear and stable triple chirality states (silence, positive, negative) of this device in visible band can be regulated reversibly (>1000 cycles) by adjusting voltage programs. Furthermore, such chiral switching phenomena are also accompanied by apparent changes of color and fluorescence. More importantly, the potential application of this device for a spatial light modulator has also been demonstrated.
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Affiliation(s)
- Guojian Yang
- State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun, P. R. China.,College of Chemistry, Jilin University, Changchun, P. R. China
| | - Yang Yu
- State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun, P. R. China.,College of Chemistry, Jilin University, Changchun, P. R. China
| | - Baige Yang
- State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun, P. R. China.,College of Chemistry, Jilin University, Changchun, P. R. China
| | - Tong Lu
- State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun, P. R. China.,College of Chemistry, Jilin University, Changchun, P. R. China
| | - Yiru Cai
- College of Chemistry, Jilin University, Changchun, P. R. China
| | - Hang Yin
- Institute of Atom and Molecular Physics, Jilin University, Changchun, P. R. China
| | - Huiqi Zhang
- College of Chemistry, Jilin University, Changchun, P. R. China
| | - Ning-Ning Zhang
- State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun, P. R. China.,College of Chemistry, Jilin University, Changchun, P. R. China
| | - Li Li
- College of Chemistry, Jilin University, Changchun, P. R. China.,State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, Jilin University, Changchun, P. R. China
| | - Yu-Mo Zhang
- State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun, P. R. China.,College of Chemistry, Jilin University, Changchun, P. R. China
| | - Sean Xiao-An Zhang
- State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun, P. R. China.,College of Chemistry, Jilin University, Changchun, P. R. China
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15
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Savchuk M, Vertueux S, Cauchy T, Loumaigne M, Zinna F, Di Bari L, Zigon N, Avarvari N. Schiff-base [4]helicene Zn(II) complexes as chiral emitters. Dalton Trans 2021; 50:10533-10539. [PMID: 34259673 DOI: 10.1039/d1dt01752g] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
The controlled preparation of chiral emissive transition metal complexes is fundamental in the field of circularly polarized luminescence (CPL) active molecular materials. For this purpose, enantiopure Zn(ii) complexes 1 and 2 based on a tetradentate salen ligand surrounded by [4]helicene moieties, together with their racemic counterpart 3, have been herein synthesized. Chirality is primarily brought about by chiral 1,2-cyclohexane-diamines. Alternatively, achiral complex 4 based on ortho-phenylene-diamine has been prepared as well. Single crystal X-ray diffraction analyses have been performed on helicenic intermediates 8 and 9 and complexes 1 and 4. Complexes 1 and 4 display the typical tetradentate O,N,N,O coordination around Zn(ii) characteristic of salen ligands, and bear two [4]helicene moieties. The zinc complexes are luminescent in the visible range around 560 nm at room temperature in aerated solutions with the QY reaching ca. 15% for a luminescence lifetime of 5.5 ns. The optical activities of these complexes have been assessed by CD and CPL, and compared to DFT calculations.
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Affiliation(s)
- Mariia Savchuk
- Univ Angers, CNRS, MOLTECH-Anjou, SFR MATRIX, F-49000 Angers, France.
| | - Steven Vertueux
- Univ Angers, CNRS, MOLTECH-Anjou, SFR MATRIX, F-49000 Angers, France.
| | - Thomas Cauchy
- Univ Angers, CNRS, MOLTECH-Anjou, SFR MATRIX, F-49000 Angers, France.
| | | | - Francesco Zinna
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, via G. Moruzzi, 13, 56124, Pisa, Italy
| | - Lorenzo Di Bari
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, via G. Moruzzi, 13, 56124, Pisa, Italy
| | - Nicolas Zigon
- Univ Angers, CNRS, MOLTECH-Anjou, SFR MATRIX, F-49000 Angers, France.
| | - Narcis Avarvari
- Univ Angers, CNRS, MOLTECH-Anjou, SFR MATRIX, F-49000 Angers, France.
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16
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Abstract
Helicenes, chiral members of the family of polyaromatic hydrocarbons, have been increasingly used in a variety of applications in recent years. Despite their intriguing properties, wider utilization is hindered by difficult functionalization of its skeleton, which would provide access to finely tuned derivatives of desired properties. Herein, the recent advancements in the field of helicene functionalization are discussed with an emphasis on different types of transformations, their versatility, and regioselectivity.
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Affiliation(s)
- Martin Jakubec
- Department of Advanced Materials and Organic Synthesis, Institute of Chemical Process Fundamentals of the CAS, v. v. i., Rozvojová 2/135, Prague 6, 165 02, Czech Republic
| | - Jan Storch
- Department of Advanced Materials and Organic Synthesis, Institute of Chemical Process Fundamentals of the CAS, v. v. i., Rozvojová 2/135, Prague 6, 165 02, Czech Republic
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17
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Baghdasaryan A, Martin K, Lawson Daku LM, Mastropasqua Talamo M, Avarvari N, Bürgi T. Ligand exchange reactions on the chiral Au 38 cluster: CD modulation caused by the modification of the ligand shell composition. NANOSCALE 2020; 12:18160-18170. [PMID: 32856033 DOI: 10.1039/d0nr03824e] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Ligand exchange reactions have become a highly versatile post-synthetic strategy to accurately engineer the ligand shell of atomically precise noble metal nanoclusters. Modifying the chemical structure of the exchanging ligand with chromophore substituents or adding chiral centers allow direct functionalization of the cluster with desired properties. As such, post-functionalized gold nanoclusters with unique physicochemical properties find applications in optoelectronics, catalysis and biomedicine. Herein, we successfully carried out ligand exchange reactions between the chiral Au38(2-PET)24 cluster (both racemic and enantiopure forms) and the helically chiral but configurationally labile 2-thio[4]helicene ligand (TH4). The reaction products with a composition of Au38(2-PET)24-x(TH4)x were analyzed using UV-vis spectroscopy and MALDI mass spectrometry. It was found that up to ten 2-PET ligands can be replaced with the helicene ligand on the cluster surface according to MALDI analysis. Consequently, the UV-vis and CD spectra of the cluster have been strongly affected by the ligand exchange reaction. The intensities of the CD signals of Au38(2-PET)24-x(TH4)x were drastically reduced and red shifted with respect to the reference Au38(2-PET)24 cluster. Moreover, the appearance of the other enantiomer in the HPLC chromatogram revealed the partial racemization of the cluster. DFT calculations were performed and they support the experimental observations and show that the observed chiroptical changes in UV-vis and CD spectra are exchange-site dependent. The calculations also demonstrate that charge transfer (CT) transitions occur between the Au38 cluster and the helicene ligand. Thus the ligand is directly involved in these transitions and contributes to the electronic states comprising those transitions.
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Affiliation(s)
- Ani Baghdasaryan
- Department of Physical Chemistry, University of Geneva, 30 Quai Ernest-Ansermet, 1211 Geneva 4, Switzerland.
| | - Kévin Martin
- MOLTECH-Anjou, UMR 6200, CNRS, UNIV Angers, 2 bd Lavoisier, 49045 ANGERS Cedex, France
| | - Latévi Max Lawson Daku
- Department of Physical Chemistry, University of Geneva, 30 Quai Ernest-Ansermet, 1211 Geneva 4, Switzerland.
| | | | - Narcis Avarvari
- MOLTECH-Anjou, UMR 6200, CNRS, UNIV Angers, 2 bd Lavoisier, 49045 ANGERS Cedex, France
| | - Thomas Bürgi
- Department of Physical Chemistry, University of Geneva, 30 Quai Ernest-Ansermet, 1211 Geneva 4, Switzerland.
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18
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Tani F, Narita M, Murafuji T. Helicene Radicals: Molecules Bearing a Combination of Helical Chirality and Unpaired Electron Spin. Chempluschem 2020; 85:2093-2104. [DOI: 10.1002/cplu.202000452] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Revised: 08/19/2020] [Indexed: 12/25/2022]
Affiliation(s)
- Fumito Tani
- Institute for Materials Chemistry and Engineering Kyushu University Fukuoka 819-0395 Japan
| | - Masahiro Narita
- Institute for Materials Chemistry and Engineering Kyushu University Fukuoka 819-0395 Japan
| | - Toshihiro Murafuji
- Graduate School of Sciences and Technology for Innovation Yamaguchi University Yamaguchi 753-8512 Japan
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19
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Ma J, Fu Y, Dmitrieva E, Liu F, Komber H, Hennersdorf F, Popov AA, Weigand JJ, Liu J, Feng X. Helical Nanographenes Containing an Azulene Unit: Synthesis, Crystal Structures, and Properties. Angew Chem Int Ed Engl 2020; 59:5637-5642. [PMID: 31867754 PMCID: PMC7155134 DOI: 10.1002/anie.201914716] [Citation(s) in RCA: 91] [Impact Index Per Article: 22.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2019] [Indexed: 11/09/2022]
Abstract
Three unprecedented helical nanographenes (1, 2, and 3) containing an azulene unit are synthesized. The resultant helical structures are unambiguously confirmed by X‐ray crystallographic analysis. The embedded azulene unit in 2 possesses a record‐high twisting degree (16.1°) as a result of the contiguous steric repulsion at the helical inner rim. Structural analysis in combination with theoretical calculations reveals that these helical nanographenes manifest a global aromatic structure, while the inner azulene unit exhibits weak antiaromatic character. Furthermore, UV/Vis‐spectral measurements reveal that superhelicenes 2 and 3 possess narrow energy gaps (2: 1.88 eV; 3: 2.03 eV), as corroborated by cyclic voltammetry and supported by density functional theory (DFT) calculations. The stable oxidized and reduced states of 2 and 3 are characterized by in‐situ EPR/Vis–NIR spectroelectrochemistry. Our study provides a novel synthetic strategy for helical nanographenes containing azulene units as well as their associated structures and physical properties.
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Affiliation(s)
- Ji Ma
- Centre for Advancing Electronics Dresden (cfaed), Faculty of Chemistry and Food Chemistry, Technische Universität Dresden, 01062, Dresden, Germany
| | - Yubin Fu
- Centre for Advancing Electronics Dresden (cfaed), Faculty of Chemistry and Food Chemistry, Technische Universität Dresden, 01062, Dresden, Germany
| | - Evgenia Dmitrieva
- Leibniz Institute for Solid State and Materials Research, 01069, Dresden, Germany
| | - Fupin Liu
- Leibniz Institute for Solid State and Materials Research, 01069, Dresden, Germany
| | - Hartmut Komber
- Leibniz-Institut für Polymerforschung Dresden e. V., Hohe Straße 6, 01069, Dresden, Germany
| | - Felix Hennersdorf
- Chair of Inorganic Molecular Chemistry, Technische Universität Dresden, 01062, Dresden, Germany
| | - Alexey A Popov
- Leibniz Institute for Solid State and Materials Research, 01069, Dresden, Germany
| | - Jan J Weigand
- Chair of Inorganic Molecular Chemistry, Technische Universität Dresden, 01062, Dresden, Germany
| | - Junzhi Liu
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Xinliang Feng
- Centre for Advancing Electronics Dresden (cfaed), Faculty of Chemistry and Food Chemistry, Technische Universität Dresden, 01062, Dresden, Germany
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20
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Ma J, Fu Y, Dmitrieva E, Liu F, Komber H, Hennersdorf F, Popov AA, Weigand JJ, Liu J, Feng X. Helical Nanographenes Containing an Azulene Unit: Synthesis, Crystal Structures, and Properties. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201914716] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Ji Ma
- Centre for Advancing Electronics Dresden (cfaed) Faculty of Chemistry and Food Chemistry Technische Universität Dresden 01062 Dresden Germany
| | - Yubin Fu
- Centre for Advancing Electronics Dresden (cfaed) Faculty of Chemistry and Food Chemistry Technische Universität Dresden 01062 Dresden Germany
| | - Evgenia Dmitrieva
- Leibniz Institute for Solid State and Materials Research 01069 Dresden Germany
| | - Fupin Liu
- Leibniz Institute for Solid State and Materials Research 01069 Dresden Germany
| | - Hartmut Komber
- Leibniz-Institut für Polymerforschung Dresden e. V. Hohe Straße 6 01069 Dresden Germany
| | - Felix Hennersdorf
- Chair of Inorganic Molecular Chemistry Technische Universität Dresden 01062 Dresden Germany
| | - Alexey A. Popov
- Leibniz Institute for Solid State and Materials Research 01069 Dresden Germany
| | - Jan J. Weigand
- Chair of Inorganic Molecular Chemistry Technische Universität Dresden 01062 Dresden Germany
| | - Junzhi Liu
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry The University of Hong Kong Pokfulam Road Hong Kong China
| | - Xinliang Feng
- Centre for Advancing Electronics Dresden (cfaed) Faculty of Chemistry and Food Chemistry Technische Universität Dresden 01062 Dresden Germany
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21
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Hasegawa M, Iyoda M. Self-Assembly of Radially π-Extended Tetrathiafulvalene Tetramers for Visible and Near Infrared Electrochromic Nanofiber. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2020. [DOI: 10.1246/bcsj.20190283] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Masashi Hasegawa
- Department of Chemistry, Graduate School of Science, Kitasato University, Sagamihara, Kanagawa 252-0373, Japan
| | - Masahiko Iyoda
- Department of Chemistry, Graduate School of Science, Tokyo Metropolitan University, Hachioji, Tokyo 192-0397, Japan
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22
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Nejedlý J, Šámal M, Rybáček J, Sánchez IG, Houska V, Warzecha T, Vacek J, Sieger L, Buděšínský M, Bednárová L, Fiedler P, Císařová I, Starý I, Stará IG. Synthesis of Racemic, Diastereopure, and Enantiopure Carba- or Oxa[5]-, [6]-, [7]-, and -[19]helicene (Di)thiol Derivatives. J Org Chem 2020; 85:248-276. [PMID: 31808692 DOI: 10.1021/acs.joc.9b02965] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A series of carba- or oxa[5]-, [6]-, [7]-, and -[19]helicene (di)thiols was prepared. The Miyazaki-Newman-Kwart rearrangement of (dimethylcarbamothioyl)oxy (oxa)helicenes in a flow reactor or nucleophilic substitution of dichloro (oxa)helicenes with alkanethiolates were used in the sulfanylation step. Despite the high temperatures employed in this key step, no conformational scrambling was observed during the asymmetric synthesis of the diastereo- and enantiopure oxahelicenes. Single-molecule conductivity of the longest oxa[19]helicene dithiol derivative was studied by the scanning tunneling microscopy break-junction method.
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Affiliation(s)
- Jindřich Nejedlý
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences , Flemingovo nám. 2 , 166 10 Prague 6 , Czech Republic.,Department of Organic Chemistry, Faculty of Science , Charles University in Prague , Hlavova 2030/8 , 128 43 Prague 2 , Czech Republic
| | - Michal Šámal
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences , Flemingovo nám. 2 , 166 10 Prague 6 , Czech Republic
| | - Jiří Rybáček
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences , Flemingovo nám. 2 , 166 10 Prague 6 , Czech Republic
| | - Isabel Gay Sánchez
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences , Flemingovo nám. 2 , 166 10 Prague 6 , Czech Republic.,Department of Organic Chemistry, Faculty of Science , Charles University in Prague , Hlavova 2030/8 , 128 43 Prague 2 , Czech Republic
| | - Václav Houska
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences , Flemingovo nám. 2 , 166 10 Prague 6 , Czech Republic.,Department of Physical and Macromolecular Chemistry, Faculty of Science , Charles University in Prague , Hlavova 2030/8 , 128 43 Prague 2 , Czech Republic
| | - Tomáš Warzecha
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences , Flemingovo nám. 2 , 166 10 Prague 6 , Czech Republic
| | - Jaroslav Vacek
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences , Flemingovo nám. 2 , 166 10 Prague 6 , Czech Republic
| | - Ladislav Sieger
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences , Flemingovo nám. 2 , 166 10 Prague 6 , Czech Republic.,Department of Physics, Faculty of Electrical Engineering , CTU in Prague , Technická 2 , 166 27 Prague 6 , Czech Republic
| | - Miloš Buděšínský
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences , Flemingovo nám. 2 , 166 10 Prague 6 , Czech Republic
| | - Lucie Bednárová
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences , Flemingovo nám. 2 , 166 10 Prague 6 , Czech Republic
| | - Pavel Fiedler
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences , Flemingovo nám. 2 , 166 10 Prague 6 , Czech Republic
| | - Ivana Císařová
- Department of Inorganic Chemistry, Faculty of Science , Charles University in Prague , Hlavova 2030/8 , 128 43 Prague 2 , Czech Republic
| | - Ivo Starý
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences , Flemingovo nám. 2 , 166 10 Prague 6 , Czech Republic
| | - Irena G Stará
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences , Flemingovo nám. 2 , 166 10 Prague 6 , Czech Republic
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23
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Cador O, Le Guennic B, Ouahab L, Pointillart F. Decorated Tetrathiafulvalene-Based Ligands: Powerful Chemical Tools for the Design of Single-Molecule Magnets. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201900981] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Olivier Cador
- ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226; Univ Rennes, CNRS; F-35000 Rennes France
| | - Boris Le Guennic
- ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226; Univ Rennes, CNRS; F-35000 Rennes France
| | - Lahcène Ouahab
- ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226; Univ Rennes, CNRS; F-35000 Rennes France
| | - Fabrice Pointillart
- ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226; Univ Rennes, CNRS; F-35000 Rennes France
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24
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Gaedke M, Witte F, Anhäuser J, Hupatz H, Schröder HV, Valkonen A, Rissanen K, Lützen A, Paulus B, Schalley CA. Chiroptical inversion of a planar chiral redox-switchable rotaxane. Chem Sci 2019; 10:10003-10009. [PMID: 32055357 PMCID: PMC7003955 DOI: 10.1039/c9sc03694f] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2019] [Accepted: 09/04/2019] [Indexed: 12/16/2022] Open
Abstract
A tetrathiafulvalene (TTF)-containing crown ether macrocycle with C s symmetry was designed to implement planar chirality into a redox-active [2]rotaxane. The directionality of the macrocycle atom sequence together with the non-symmetric axle renders the corresponding [2]rotaxane mechanically planar chiral. Enantiomeric separation of the [2]rotaxane was achieved by chiral HPLC. The electrochemical properties - caused by the reversible oxidation of the TTF - are similar to a non-chiral control. Reversible inversion of the main band in the ECD spectra for the individual enantiomers was observed after oxidation. Experimental evidence, conformational analysis and DFT calculations of the neutral and doubly oxidised species indicate that mainly electronic effects of the oxidation are responsible for the chiroptical switching. This is the first electrochemically switchable rotaxane with a reversible inversion of the main ECD band.
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Affiliation(s)
- Marius Gaedke
- Institut für Chemie und Biochemie , Freie Universität Berlin , Takustr. 3 , 14195 Berlin , Germany .
| | - Felix Witte
- Institut für Chemie und Biochemie , Freie Universität Berlin , Takustr. 3 , 14195 Berlin , Germany .
| | - Jana Anhäuser
- Kekulé-Institut für Organische Chemie und Biochemie , Universität Bonn , Gerhard-Domagk-Str. 1 , 53121 Bonn , Germany
| | - Henrik Hupatz
- Institut für Chemie und Biochemie , Freie Universität Berlin , Takustr. 3 , 14195 Berlin , Germany .
| | - Hendrik V Schröder
- Institut für Chemie und Biochemie , Freie Universität Berlin , Takustr. 3 , 14195 Berlin , Germany .
| | - Arto Valkonen
- University of Jyvaskyla , Department of Chemistry , P.O. Box 35 , 40014 Jyväskylä , Finland
| | - Kari Rissanen
- University of Jyvaskyla , Department of Chemistry , P.O. Box 35 , 40014 Jyväskylä , Finland
| | - Arne Lützen
- Kekulé-Institut für Organische Chemie und Biochemie , Universität Bonn , Gerhard-Domagk-Str. 1 , 53121 Bonn , Germany
| | - Beate Paulus
- Institut für Chemie und Biochemie , Freie Universität Berlin , Takustr. 3 , 14195 Berlin , Germany .
| | - Christoph A Schalley
- Institut für Chemie und Biochemie , Freie Universität Berlin , Takustr. 3 , 14195 Berlin , Germany .
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25
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Hafedh N, Favereau L, Caytan E, Roisnel T, Jean M, Vanthuyne N, Aloui F, Crassous J. Synthesis and chiroptical properties of organometallic complexes of helicenic N-heterocyclic carbenes. Chirality 2019; 31:1005-1013. [PMID: 31670433 DOI: 10.1002/chir.23143] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2019] [Revised: 10/07/2019] [Accepted: 10/09/2019] [Indexed: 11/11/2022]
Abstract
Novel [4, 6]helicenes (4a,b) bearing a fused imidazolium unit have been prepared from [4, 6]helicene-2,3-di-n-propyl-amines 3a,b. The in situ formation of N-heterocyclic carbene (NHC) derivatives followed by their complexation to iridium(I) or rhodium(I) gave access to complexes 1a, 1'a, and 1b, containing mono-coordinated helicene-NHC, chloro and COD (COD = 1,5-cyclooctadiene) ligands. Ir and Rh complexes 1a and 1'a were characterized by X-ray crystallography. HPLC and NMR analyses showed that Ir(I) complex 1b existed as a mixture of two diastereomeric complexes corresponding to enantiomeric pairs M-(-)/P-(+)-1b1 and M-(-)/P-(+)-1b2 which differ by the position of COD through space. The chiroptical properties (electronic circular dichroism and optical rotation) of the four stereoisomers were measured. These complexes were also tested as catalysts in a transfer hydrogenation reaction.
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Affiliation(s)
- Nesrine Hafedh
- Intitut des Sciences Chimiques de Rennes, ISCR-UMR 6226, Rennes, France.,Laboratory of Asymmetric Organic Synthesis and Homogenous Catalysis (UR11ES56), Faculty of Sciences, Avenue of environment, University of Monastir, Monastir, Tunisia
| | - Ludovic Favereau
- Intitut des Sciences Chimiques de Rennes, ISCR-UMR 6226, Rennes, France
| | - Elsa Caytan
- Intitut des Sciences Chimiques de Rennes, ISCR-UMR 6226, Rennes, France
| | - Thierry Roisnel
- Intitut des Sciences Chimiques de Rennes, ISCR-UMR 6226, Rennes, France
| | - Marion Jean
- Aix Marseille Université, Centrale Marseille, CNRS, iSm2 UMR 7313, Marseille, France
| | - Nicolas Vanthuyne
- Aix Marseille Université, Centrale Marseille, CNRS, iSm2 UMR 7313, Marseille, France
| | - Faouzi Aloui
- Laboratory of Asymmetric Organic Synthesis and Homogenous Catalysis (UR11ES56), Faculty of Sciences, Avenue of environment, University of Monastir, Monastir, Tunisia
| | - Jeanne Crassous
- Intitut des Sciences Chimiques de Rennes, ISCR-UMR 6226, Rennes, France
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26
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Abhervé A, Martin K, Hauser A, Avarvari N. Helicene Bis(pyrazol-1-yl)pyridine Ligands for Luminescent Transition-Metal Complexes. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201900870] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Alexandre Abhervé
- MOLTECH-Anjou, UMR 6200; CNRS, UNIV Angers; 2 bd Lavoisier 49045 ANGERS Cedex France
| | - Kévin Martin
- MOLTECH-Anjou, UMR 6200; CNRS, UNIV Angers; 2 bd Lavoisier 49045 ANGERS Cedex France
| | - Andreas Hauser
- Department of Physical Chemistry; University of Geneva; 30 Quai Ernest-Ansermet 1211 Geneva Switzerland
| | - Narcis Avarvari
- MOLTECH-Anjou, UMR 6200; CNRS, UNIV Angers; 2 bd Lavoisier 49045 ANGERS Cedex France
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27
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Rončević I, Jirásek M, Severa L, Reyes‐Gutierrez PE, Teplý F, Bednárová L, Hromadová M, Pospíšil L. Chiroptical Redox Switching of Tetra‐Cationic Derivatives of Azoniahelicenes. ChemElectroChem 2019. [DOI: 10.1002/celc.201900204] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Igor Rončević
- Department of Organic SynthesisInstitute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences Flemingovo nám. 2 Prague 6 Czech Rep
| | - Michael Jirásek
- Department of Organic SynthesisInstitute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences Flemingovo nám. 2 Prague 6 Czech Rep
| | - Lukáš Severa
- Department of Organic SynthesisInstitute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences Flemingovo nám. 2 Prague 6 Czech Rep
| | - Paul Eduardo Reyes‐Gutierrez
- Department of Organic SynthesisInstitute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences Flemingovo nám. 2 Prague 6 Czech Rep
| | - Filip Teplý
- Department of Organic SynthesisInstitute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences Flemingovo nám. 2 Prague 6 Czech Rep
| | - Lucie Bednárová
- Department of Organic SynthesisInstitute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences Flemingovo nám. 2 Prague 6 Czech Rep
| | - Magdaléna Hromadová
- Department of Electrochemistry at NanoscaleJ. Heyrovský Institute of Physical Chemistry of the Czech Academy of Sciences, Dolejškova 3 18223 Prague Czech Rep
| | - Lubomír Pospíšil
- Department of Organic SynthesisInstitute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences Flemingovo nám. 2 Prague 6 Czech Rep
- Department of Electrochemistry at NanoscaleJ. Heyrovský Institute of Physical Chemistry of the Czech Academy of Sciences, Dolejškova 3 18223 Prague Czech Rep
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28
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Pop F, Zigon N, Avarvari N. Main-Group-Based Electro- and Photoactive Chiral Materials. Chem Rev 2019; 119:8435-8478. [DOI: 10.1021/acs.chemrev.8b00770] [Citation(s) in RCA: 127] [Impact Index Per Article: 25.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Flavia Pop
- Laboratoire MOLTECH-Anjou,
UMR 6200 CNRS-Université d’Angers, UFR Sciences, Bât. K, 2 Bd. Lavoisier, 49045 Angers Cedex, France
| | - Nicolas Zigon
- Laboratoire MOLTECH-Anjou,
UMR 6200 CNRS-Université d’Angers, UFR Sciences, Bât. K, 2 Bd. Lavoisier, 49045 Angers Cedex, France
| | - Narcis Avarvari
- Laboratoire MOLTECH-Anjou,
UMR 6200 CNRS-Université d’Angers, UFR Sciences, Bât. K, 2 Bd. Lavoisier, 49045 Angers Cedex, France
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29
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Mairena A, Baljozovic M, Kawecki M, Grenader K, Wienke M, Martin K, Bernard L, Avarvari N, Terfort A, Ernst KH, Wäckerlin C. The fate of bromine after temperature-induced dehydrogenation of on-surface synthesized bisheptahelicene. Chem Sci 2019; 10:2998-3004. [PMID: 30996879 PMCID: PMC6430192 DOI: 10.1039/c8sc04720k] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2018] [Accepted: 01/15/2019] [Indexed: 12/18/2022] Open
Abstract
The dehydrogenation of bisheptahelicene leads to specific products and induces desorption of the side-product bromine as hydrogen bromide.
The on-surface synthesis of bisheptahelicene by Ullmann coupling of 9-bromoheptahelicene on Au(111) and its temperature-induced dehydrogenation is studied using temperature-programmed reaction spectroscopy and time-of-flight secondary ion mass spectrometry. Specific dehydrogenation products of bisheptahelicene after loss of 6, 8 and 10 hydrogen atoms are identified, corresponding to molecules having undergone Diels–Alder transformations and intramolecular C–C coupling reactions. By combining with atomic hydrogen produced by dehydrogenation, the Ullmann coupling side-product bromine desorbs as HBr. H2 desorption emerges only after all Br has desorbed. Such characteristic behavior is explained by a kinetic model which explicitly considers the coverage of transient atomic H on the surface. Heating experiments performed with saturated layers of different Br-containing molecules reveal that the onset of HBr desorption depends strictly on the dehydrogenation step and therefore on the structure of the molecules.
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Affiliation(s)
- Anaïs Mairena
- Empa, Swiss Federal Laboratories for Materials Science and Technology , 8600 Dübendorf , Switzerland . ;
| | - Milos Baljozovic
- Empa, Swiss Federal Laboratories for Materials Science and Technology , 8600 Dübendorf , Switzerland . ;
| | - Maciej Kawecki
- Empa, Swiss Federal Laboratories for Materials Science and Technology , 8600 Dübendorf , Switzerland . ;
| | - Konstantin Grenader
- Department of Chemistry , Institute of Inorganic and Analytical Chemistry , Goethe-University , 60438 Frankfurt , Germany
| | - Martin Wienke
- Department of Chemistry , University of Hamburg , 20146 Hamburg , Germany
| | - Kévin Martin
- Laboratoire Moltech-Anjou , CNRS-Université d'Angers , 49045 Angers , France
| | - Laetitia Bernard
- Empa, Swiss Federal Laboratories for Materials Science and Technology , 8600 Dübendorf , Switzerland . ;
| | - Narcis Avarvari
- Laboratoire Moltech-Anjou , CNRS-Université d'Angers , 49045 Angers , France
| | - Andreas Terfort
- Department of Chemistry , Institute of Inorganic and Analytical Chemistry , Goethe-University , 60438 Frankfurt , Germany
| | - Karl-Heinz Ernst
- Empa, Swiss Federal Laboratories for Materials Science and Technology , 8600 Dübendorf , Switzerland . ; .,Department of Chemistry , University of Zurich , 8057 Zurich , Switzerland
| | - Christian Wäckerlin
- Empa, Swiss Federal Laboratories for Materials Science and Technology , 8600 Dübendorf , Switzerland . ;
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30
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Pointillart F, Ou-Yang JK, Fernandez Garcia G, Montigaud V, Flores Gonzalez J, Marchal R, Favereau L, Totti F, Crassous J, Cador O, Ouahab L, Le Guennic B. Tetrathiafulvalene-Based Helicene Ligand in the Design of a Dysprosium Field-Induced Single-Molecule Magnet. Inorg Chem 2018; 58:52-56. [PMID: 30550268 PMCID: PMC6400426 DOI: 10.1021/acs.inorgchem.8b02830] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
![]()
The design of a coordination
complex that involves a ligand combining both a tetrathiafulvalene
core and a helicene fragment was achieved thanks to the reaction between
the new 2-{1-[2-methyl[6]helicene]-4,5-[4,5-bis(propylthio)tetrathiafulvalenyl]-1H-benzimidazol-2-yl}pyridine ligand (L) and
the Dy(hfac)3·2H2O metalloprecursor. Magnetic
investigations showed field-induced single-molecule-magnet (SMM) behavior
under an applied magnetic field of 1000 Oe for [Dy(hfac)3(L)]·0.5CH2Cl2, while experimentally
oriented single-crystal magnetic measurements allowed for determination
of the magnetic anisotropy orientation. The magnetic behavior was
rationalized through ab initio
CASSCF/SI-SO calculations. This redox-active chiral-field-induced
SMM paves the way for the design of switchable-multiproperty SMMs. A redox-active chiral-field-induced single-molecule
magnet was achieved through a coordination reaction of the [Dy(hfac)3] precursor to a ligand that combines a redox-active tetrathiafulvalene
core and a chiral carbo[6]helicene fragment. This multiproperty system
was characterized using X-ray crystallography, magnetism, and ab initio
calculations.
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Affiliation(s)
- Fabrice Pointillart
- Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226 , 35000 Rennes , France
| | - Jiang-Kun Ou-Yang
- Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226 , 35000 Rennes , France
| | - Guglielmo Fernandez Garcia
- Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226 , 35000 Rennes , France.,Department of Chemistry "Ugo Schiff" and INSTM RU , University of Florence , 50019 Sesto Fiorentino , Italy
| | - Vincent Montigaud
- Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226 , 35000 Rennes , France
| | - Jessica Flores Gonzalez
- Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226 , 35000 Rennes , France
| | - Rémi Marchal
- Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226 , 35000 Rennes , France
| | - Ludovic Favereau
- Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226 , 35000 Rennes , France
| | - Federico Totti
- Department of Chemistry "Ugo Schiff" and INSTM RU , University of Florence , 50019 Sesto Fiorentino , Italy
| | - Jeanne Crassous
- Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226 , 35000 Rennes , France
| | - Olivier Cador
- Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226 , 35000 Rennes , France
| | - Lahcène Ouahab
- Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226 , 35000 Rennes , France
| | - Boris Le Guennic
- Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226 , 35000 Rennes , France
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31
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Shen C, Srebro-Hooper M, Weymuth T, Krausbeck F, Navarrete JTL, Ramírez FJ, Nieto-Ortega B, Casado J, Reiher M, Autschbach J, Crassous J. Redox-Active Chiroptical Switching in Mono- and Bis-Iron Ethynylcarbo[6]helicenes Studied by Electronic and Vibrational Circular Dichroism and Resonance Raman Optical Activity. Chemistry 2018; 24:15067-15079. [PMID: 30044521 DOI: 10.1002/chem.201803069] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Revised: 07/24/2018] [Indexed: 11/10/2022]
Abstract
Introducing one or two alkynyl-iron moieties onto a carbo[6]helicene results in organometallic helicenes (2 a,b) that display strong chiroptical activity combined with efficient redox-triggered switching. The neutral and oxidized forms have been studied in detail by electronic and vibrational circular dichroism, as well as by Raman optical activity (ROA) spectroscopy. The experimental results were analyzed and spectra were assigned with the help of first-principles calculations. In particular, a recently developed method for ROA calculations under resonance conditions has been used to study the intricate resonance effects on the ROA spectrum of mono-iron ethynylhelicene 2 a.
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Affiliation(s)
- Chengshuo Shen
- Institut des Sciences Chimiques de Rennes UMR 6226, CNRS Université de Rennes 1, Campus de Beaulieu, 35042, Rennes Cedex, France
| | - Monika Srebro-Hooper
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387, Krakow, Poland
| | - Thomas Weymuth
- Laboratorium für Physikalische Chemie, ETH Zürich, Vladimir-Prelog-Weg 2, CH-8093, Zürich, Switzerland
| | - Florian Krausbeck
- Laboratorium für Physikalische Chemie, ETH Zürich, Vladimir-Prelog-Weg 2, CH-8093, Zürich, Switzerland
| | - Juan T López Navarrete
- Department of Physical Chemistry, University of Malaga, Campus de Teatinos s/n, Malaga, 29071, Spain
| | - Francisco J Ramírez
- Department of Physical Chemistry, University of Malaga, Campus de Teatinos s/n, Malaga, 29071, Spain
| | - Belén Nieto-Ortega
- Department of Physical Chemistry, University of Malaga, Campus de Teatinos s/n, Malaga, 29071, Spain
| | - Juan Casado
- Department of Physical Chemistry, University of Malaga, Campus de Teatinos s/n, Malaga, 29071, Spain
| | - Markus Reiher
- Laboratorium für Physikalische Chemie, ETH Zürich, Vladimir-Prelog-Weg 2, CH-8093, Zürich, Switzerland
| | - Jochen Autschbach
- Department of Chemistry, University at Buffalo, State University of New York, Buffalo, NY, 14260, USA
| | - Jeanne Crassous
- Institut des Sciences Chimiques de Rennes UMR 6226, CNRS Université de Rennes 1, Campus de Beaulieu, 35042, Rennes Cedex, France
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32
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Li J, Martin K, Avarvari N, Wäckerlin C, Ernst KH. Spontaneous separation of on-surface synthesized tris-helicenes into two-dimensional homochiral domains. Chem Commun (Camb) 2018; 54:7948-7951. [PMID: 29955753 DOI: 10.1039/c8cc04235g] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The on-surface Ullmann coupling of 2,3-dibromo[4]helicene molecules is studied on Au(111) and Cu(111) surfaces. Bis-helicene and tris-helicene are identified with scanning tunnelling microscopy and X-ray photoelectron spectroscopy as reaction products. The produced star-shaped tris-helicenes self-assemble on Au(111) spontaneously into large homochiral domains.
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Affiliation(s)
- Jingyi Li
- Empa, Swiss Federal Laboratories for Materials Science and Technology, 8600 Dübendorf, Switzerland.
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33
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Mairena A, Wienke M, Martin K, Avarvari N, Terfort A, Ernst KH, Wäckerlin C. Stereospecific Autocatalytic Surface Explosion Chemistry of Polycyclic Aromatic Hydrocarbons. J Am Chem Soc 2018; 140:7705-7709. [DOI: 10.1021/jacs.8b04191] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Anaïs Mairena
- Empa - Swiss Federal Laboratories for Materials Science and Technology, 8600 Dübendorf, Switzerland
| | - Martin Wienke
- Department of Chemistry, University of Hamburg, 20146 Hamburg, Germany
| | - Kévin Martin
- Laboratoire Moltech Anjou, Université d’Angers, 49045 Angers, France
| | - Narcis Avarvari
- Laboratoire Moltech Anjou, Université d’Angers, 49045 Angers, France
| | - Andreas Terfort
- Department of Chemistry, Institute of Inorganic and Analytical Chemistry, Goethe-University, 60438 Frankfurt, Germany
| | - Karl-Heinz Ernst
- Empa - Swiss Federal Laboratories for Materials Science and Technology, 8600 Dübendorf, Switzerland
- Department of Chemistry, University of Zurich, 8057 Zurich, Switzerland
| | - Christian Wäckerlin
- Empa - Swiss Federal Laboratories for Materials Science and Technology, 8600 Dübendorf, Switzerland
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34
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Brandt JR, Pospíšil L, Bednárová L, da Costa RC, White AJP, Mori T, Teplý F, Fuchter MJ. Intense redox-driven chiroptical switching with a 580 mV hysteresis actuated through reversible dimerization of an azoniahelicene. Chem Commun (Camb) 2018; 53:9059-9062. [PMID: 28737778 DOI: 10.1039/c7cc04903j] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Electrochemical reduction of an azoniahelicene affords a dimer, accompanied by a strong change in the electronic circular dichroism. The fast dimerisation event leads to a >500 mV shift of the oxidation potential, affording a large area of bistability, where the chiroptical signal only depends on the redox history.
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Affiliation(s)
- Jochen R Brandt
- Department of Chemistry, Imperial College London, South Kensington Campus, London SW7 2AZ, UK.
| | - Lubomír Pospíšil
- Institute of Organic Chemistry and Biochemistry, The Czech Academy of Sciences, 16610 Prague, Czech Republic and J. Heyrovský Institute of Physical Chemistry, The Czech Academy of Sciences, 18223 Prague, Czech Republic
| | - Lucie Bednárová
- Institute of Organic Chemistry and Biochemistry, The Czech Academy of Sciences, 16610 Prague, Czech Republic
| | | | - Andrew J P White
- Department of Chemistry, Imperial College London, South Kensington Campus, London SW7 2AZ, UK.
| | - Tadashi Mori
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Filip Teplý
- Institute of Organic Chemistry and Biochemistry, The Czech Academy of Sciences, 16610 Prague, Czech Republic
| | - Matthew J Fuchter
- Department of Chemistry, Imperial College London, South Kensington Campus, London SW7 2AZ, UK. and Centre for Plastic Electronics, Imperial College London, South Kensington Campus, London, SW7 2AZ, UK
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35
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Mézière C, Allain M, Oliveras-Gonzalez C, Cauchy T, Vanthuyne N, Sarbu LG, Birsa LM, Pop F, Avarvari N. Tetrathiafulvalene-[2.2]paracyclophanes: Synthesis, crystal structures, and chiroptical properties. Chirality 2018; 30:568-575. [DOI: 10.1002/chir.22831] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2017] [Accepted: 01/08/2018] [Indexed: 01/03/2023]
Affiliation(s)
- Cécile Mézière
- Laboratoire MOLTECH-Anjou, UMR 6200; Université d'Angers; Angers France
| | - Magali Allain
- Laboratoire MOLTECH-Anjou, UMR 6200; Université d'Angers; Angers France
| | | | - Thomas Cauchy
- Laboratoire MOLTECH-Anjou, UMR 6200; Université d'Angers; Angers France
| | - Nicolas Vanthuyne
- Aix Marseille Univ, CNRS, Centrale Marseille, iSm2; Marseille France
| | - Laura G. Sarbu
- Department of Chemistry; “Al. I. Cuza” University of Iasi; Iasi Romania
| | - Lucian M. Birsa
- Department of Chemistry; “Al. I. Cuza” University of Iasi; Iasi Romania
| | - Flavia Pop
- Laboratoire MOLTECH-Anjou, UMR 6200; Université d'Angers; Angers France
| | - Narcis Avarvari
- Laboratoire MOLTECH-Anjou, UMR 6200; Université d'Angers; Angers France
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36
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Pop F, Auban-Senzier P, Canadell E, Avarvari N. Anion size control of the packing in the metallic versus semiconducting chiral radical cation salts (DM-EDT-TTF) 2XF 6 (X = P, As, Sb). Chem Commun (Camb) 2018; 52:12438-12441. [PMID: 27711330 DOI: 10.1039/c6cc06706a] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Control of the structural type in metallic enantiopure and racemic radical cation salts is achieved through hydrogen bonding interactions between the chiral donor DM-EDT-TTF and the XF6 anions (X = P, As, Sb), determined by the anion size and the chiral information.
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Affiliation(s)
- Flavia Pop
- Université d'Angers, CNRS, Laboratoire MOLTECH-Anjou, UMR 6200, UFR Sciences, Bât. K, 2 Bd. Lavoisier, 49045 Angers, France.
| | - Pascale Auban-Senzier
- Laboratoire de Physique des Solides, Université Paris-Sud, UMR 8502, Bât. 510, 91405 Orsay, France
| | - Enric Canadell
- Institut de Ciència de Materials de Barcelona (CSIC), Campus de la UAB, E-08193 Bellaterra, Spain
| | - Narcis Avarvari
- Université d'Angers, CNRS, Laboratoire MOLTECH-Anjou, UMR 6200, UFR Sciences, Bât. K, 2 Bd. Lavoisier, 49045 Angers, France.
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37
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Shen C, He X, Toupet L, Norel L, Rigaut S, Crassous J. Dual Redox and Optical Control of Chiroptical Activity in Photochromic Dithienylethenes Decorated with Hexahelicene and Bis-Ethynyl-Ruthenium Units. Organometallics 2017. [DOI: 10.1021/acs.organomet.7b00534] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Chengshuo Shen
- Institut des Sciences Chimiques de Rennes, UMR 6226, Institut de Physique de Rennes, UMR 6251, Campus de Beaulieu, CNRS-Université de Rennes 1, Rennes 35042 CEDEX, France
| | - Xiaoyan He
- Institut des Sciences Chimiques de Rennes, UMR 6226, Institut de Physique de Rennes, UMR 6251, Campus de Beaulieu, CNRS-Université de Rennes 1, Rennes 35042 CEDEX, France
| | - Loïc Toupet
- Institut des Sciences Chimiques de Rennes, UMR 6226, Institut de Physique de Rennes, UMR 6251, Campus de Beaulieu, CNRS-Université de Rennes 1, Rennes 35042 CEDEX, France
| | - Lucie Norel
- Institut des Sciences Chimiques de Rennes, UMR 6226, Institut de Physique de Rennes, UMR 6251, Campus de Beaulieu, CNRS-Université de Rennes 1, Rennes 35042 CEDEX, France
| | - Stéphane Rigaut
- Institut des Sciences Chimiques de Rennes, UMR 6226, Institut de Physique de Rennes, UMR 6251, Campus de Beaulieu, CNRS-Université de Rennes 1, Rennes 35042 CEDEX, France
| | - Jeanne Crassous
- Institut des Sciences Chimiques de Rennes, UMR 6226, Institut de Physique de Rennes, UMR 6251, Campus de Beaulieu, CNRS-Université de Rennes 1, Rennes 35042 CEDEX, France
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38
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Tsujihara T, Zhou DY, Suzuki T, Tamura S, Kawano T. Helically Chiral 1-Sulfur-Functionalized [6]Helicene: Synthesis, Optical Resolution, and Functionalization. Org Lett 2017; 19:3311-3314. [DOI: 10.1021/acs.orglett.7b01470] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Tetsuya Tsujihara
- Department
of Medicinal and Organic Chemistry, School of Pharmacy, Iwate Medical University, Yahaba, Iwate 028-3694, Japan
| | - Da-Yang Zhou
- Comprehensive
Analysis Center, Institute of Scientific and Industrial Research, Osaka University, Mihogaoka, Ibaraki 567-0047, Japan
| | - Takeyuki Suzuki
- Comprehensive
Analysis Center, Institute of Scientific and Industrial Research, Osaka University, Mihogaoka, Ibaraki 567-0047, Japan
| | - Satoru Tamura
- Department
of Medicinal and Organic Chemistry, School of Pharmacy, Iwate Medical University, Yahaba, Iwate 028-3694, Japan
| | - Tomikazu Kawano
- Department
of Medicinal and Organic Chemistry, School of Pharmacy, Iwate Medical University, Yahaba, Iwate 028-3694, Japan
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39
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Hasegawa M, Kobayakawa K, Matsuzawa H, Nishinaga T, Hirose T, Sako K, Mazaki Y. Macrocyclic Oligothiophene with Stereogenic [2.2]Paracyclophane Scaffolds: Chiroptical Properties from π-Transannular Interactions. Chemistry 2017; 23:3267-3271. [DOI: 10.1002/chem.201605842] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2016] [Indexed: 10/20/2022]
Affiliation(s)
- Masashi Hasegawa
- Department of Chemistry, Graduate School of Science; Kitasato University; 1-15-1 Kitasato, Minami-ku, Sagamihara Kanagawa 252-0373 Japan
| | - Kosuke Kobayakawa
- Department of Chemistry, Graduate School of Science; Kitasato University; 1-15-1 Kitasato, Minami-ku, Sagamihara Kanagawa 252-0373 Japan
| | - Hideyo Matsuzawa
- Department of Chemistry, Graduate School of Science; Kitasato University; 1-15-1 Kitasato, Minami-ku, Sagamihara Kanagawa 252-0373 Japan
| | - Tohru Nishinaga
- Department of Chemistry, Graduate School of Science and Engineering; Tokyo Metropolitan University; Hachioji Tokyo 192-0397 Japan
| | - Takashi Hirose
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering; Kyoto University; Katsura, Nishikyo-ku Kyoto 615-8510 Japan
| | - Katsuya Sako
- Department of Life Science and Applied Chemistry; Nagoya Institute of Technology; Nagoya 466-8555 Japan
| | - Yasuhiro Mazaki
- Department of Chemistry, Graduate School of Science; Kitasato University; 1-15-1 Kitasato, Minami-ku, Sagamihara Kanagawa 252-0373 Japan
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40
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Biet T, Cauchy T, Sun Q, Ding J, Hauser A, Oulevey P, Bürgi T, Jacquemin D, Vanthuyne N, Crassous J, Avarvari N. Triplet state CPL active helicene–dithiolene platinum bipyridine complexes. Chem Commun (Camb) 2017; 53:9210-9213. [DOI: 10.1039/c7cc05198k] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
The first chiral platinum dithiolene 2,2′-bipyridine complexes containing enantiopure [6]helicene-dithiolate ligands show CPL activity.
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Affiliation(s)
- Thomas Biet
- Laboratoire Moltech-Anjou
- Université d'Angers
- CNRS UMR 6200
- 49045 Angers
- France
| | - Thomas Cauchy
- Laboratoire Moltech-Anjou
- Université d'Angers
- CNRS UMR 6200
- 49045 Angers
- France
| | - Qinchao Sun
- Department of Physical Chemistry
- University of Geneva
- CH-1211 Geneva
- Switzerland
| | - Jie Ding
- Department of Physical Chemistry
- University of Geneva
- CH-1211 Geneva
- Switzerland
| | - Andreas Hauser
- Department of Physical Chemistry
- University of Geneva
- CH-1211 Geneva
- Switzerland
| | - Patric Oulevey
- Department of Physical Chemistry
- University of Geneva
- CH-1211 Geneva
- Switzerland
| | - Thomas Bürgi
- Department of Physical Chemistry
- University of Geneva
- CH-1211 Geneva
- Switzerland
| | - Denis Jacquemin
- Laboratoire CEISAM
- UMR CNRS 6230
- Université de Nantes
- 44322 Nantes Cedex 3
- France
| | | | - Jeanne Crassous
- Institut des Sciences Chimiques de Rennes
- UMR 6226
- CNRS - Université de Rennes 1
- Campus de Beaulieu
- 35042 Rennes Cedex
| | - Narcis Avarvari
- Laboratoire Moltech-Anjou
- Université d'Angers
- CNRS UMR 6200
- 49045 Angers
- France
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41
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Gliemann BD, Petrovic AG, Zolnhofer EM, Dral PO, Hampel F, Breitenbruch G, Schulze P, Raghavan V, Meyer K, Polavarapu PL, Berova N, Kivala M. Configurationally Stable Chiral Dithia-Bridged Hetero[4]helicene Radical Cation: Electronic Structure and Absolute Configuration. Chem Asian J 2016; 12:31-35. [DOI: 10.1002/asia.201601452] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2016] [Revised: 11/20/2016] [Indexed: 01/26/2023]
Affiliation(s)
- Bettina D. Gliemann
- Chair of Organic Chemistry I; Department of Chemistry and Pharmacy; Friedrich-Alexander-Universität Erlangen-Nürnberg, Henkestrasse 42, 91054 Erlangen; Germany
| | - Ana G. Petrovic
- Department of Life Sciences; New York Institute of Technology, 1855 Broadway, New York; NY, 10023 USA
- Department of Chemistry; Columbia University, 3000 Broadway, New York; NY, 10027 USA
| | - Eva M. Zolnhofer
- Chair of General and Inorganic Chemistry; Department of Chemistry and Pharmacy; Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstrasse 1, 91058 Erlangen; Germany
| | - Pavlo O. Dral
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, 45470 Mülheim an der Ruhr; Germany
| | - Frank Hampel
- Chair of Organic Chemistry I; Department of Chemistry and Pharmacy; Friedrich-Alexander-Universität Erlangen-Nürnberg, Henkestrasse 42, 91054 Erlangen; Germany
| | - Georg Breitenbruch
- Department of Chromatography and Electrophoresis; Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, 45470 Mülheim an der Ruhr; Germany
| | - Philipp Schulze
- Department of Chromatography and Electrophoresis; Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, 45470 Mülheim an der Ruhr; Germany
| | - Vijay Raghavan
- Department of Chemistry; Vanderbilt University; TN, 37235 USA 7330 Stevenson Center Station B 351822 Nashville
| | - Karsten Meyer
- Chair of General and Inorganic Chemistry; Department of Chemistry and Pharmacy; Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstrasse 1, 91058 Erlangen; Germany
| | - Prasad L. Polavarapu
- Department of Chemistry; Vanderbilt University; TN, 37235 USA 7330 Stevenson Center Station B 351822 Nashville
| | - Nina Berova
- Department of Chemistry; Columbia University, 3000 Broadway, New York; NY, 10027 USA
| | - Milan Kivala
- Chair of Organic Chemistry I; Department of Chemistry and Pharmacy; Friedrich-Alexander-Universität Erlangen-Nürnberg, Henkestrasse 42, 91054 Erlangen; Germany
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42
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Biet T, Martin K, Hankache J, Hellou N, Hauser A, Bürgi T, Vanthuyne N, Aharon T, Caricato M, Crassous J, Avarvari N. Triggering Emission with the Helical Turn in Thiadiazole-Helicenes. Chemistry 2016; 23:437-446. [PMID: 27763709 DOI: 10.1002/chem.201604471] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2016] [Indexed: 01/17/2023]
Abstract
Introduction of heterocycles into the helical skeleton of helicenes allows modulation of their redox, chiroptical, and photophysical properties. This paper describes the straightforward preparation and structural characterization by single-crystal X-ray diffraction of thiadiazole-[7]helicene, which was resolved into M and P enantiomers by chiral HPLC, together with its S-shaped double [4]helicene isomer, as well as the smaller congeners thiadiazole-[5]helicene and benzothiadiazole-anthracene. A copper(II) complex with two thiadiazole-[5]helicene ligands was structurally characterized, and it shows the presence of both M and P isomers coordinated to the metal center. The emission properties of the heterohelicenes are highly dependent on the helical turn, as the [7]- and [5]helicene are poorly emissive, whereas their isomers, that is, the S-shaped double [4]helicene and thiadiazole-benzanthracene, are luminescent, with quantum efficiencies of 5.4 and 6.5 %, respectively. DFT calculations suggest quenching of the luminescence of enantiopure [7]helicenes through an intersystem-crossing mechanism arising from the relaxed excited S1 state.
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Affiliation(s)
- Thomas Biet
- Université d'Angers, CNRS UMR 6200, Laboratoire MOLTECH-Anjou, 2 bd Lavoisier, 49045, Angers, France
| | - Kévin Martin
- Université d'Angers, CNRS UMR 6200, Laboratoire MOLTECH-Anjou, 2 bd Lavoisier, 49045, Angers, France
| | - Jihane Hankache
- Department of Physical Chemistry, University of Geneva, 30 Quai Ernest Ansermet, 1211, Geneva, Switzerland
| | - Nora Hellou
- Institut des Sciences Chimiques de Rennes, UMR 6226, CNRS - Université de Rennes 1, Campus de Beaulieu, 35042, Rennes Cedex, France
| | - Andreas Hauser
- Department of Physical Chemistry, University of Geneva, 30 Quai Ernest Ansermet, 1211, Geneva, Switzerland
| | - Thomas Bürgi
- Department of Physical Chemistry, University of Geneva, 30 Quai Ernest Ansermet, 1211, Geneva, Switzerland
| | - Nicolas Vanthuyne
- Aix Marseille Univ, CNRS, Centrale Marseille, iSm2, Marseille , France
| | - Tal Aharon
- Department of Chemistry, University of Kansas, 1251 Wescoe Hall Drive, Lawrence, Kansas, 66045, USA
| | - Marco Caricato
- Department of Chemistry, University of Kansas, 1251 Wescoe Hall Drive, Lawrence, Kansas, 66045, USA
| | - Jeanne Crassous
- Institut des Sciences Chimiques de Rennes, UMR 6226, CNRS - Université de Rennes 1, Campus de Beaulieu, 35042, Rennes Cedex, France
| | - Narcis Avarvari
- Université d'Angers, CNRS UMR 6200, Laboratoire MOLTECH-Anjou, 2 bd Lavoisier, 49045, Angers, France
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43
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Branzea DG, Pop F, Auban-Senzier P, Clérac R, Alemany P, Canadell E, Avarvari N. Localization versus Delocalization in Chiral Single Component Conductors of Gold Bis(dithiolene) Complexes. J Am Chem Soc 2016; 138:6838-51. [PMID: 27167919 DOI: 10.1021/jacs.6b03342] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
The first examples of chiral single component conductors are reported. Both (S,S) and (R,R) enantiomers of 5,6-dimethyl-5,6-dihydro-1,4-dithiin-2,3-dithiolate (dm-dddt) ligand have been used to prepare anionic metal bis(dithiolene) complexes formulated as ([(n-Bu)4N][M(dm-dddt)2] (M = Au, Ni), which are isostructural according to single crystal X-ray analysis. Single crystal transport measurements indicate semiconducting behavior for the anionic radical Ni complexes, with low room temperature conductivity values and high activation energies. Electrocrystallization experiments provided neutral [M(dm-dddt)2] (M = Au, Ni) complexes. The neutral radical gold compounds show intermolecular S···S interactions in the solid state giving rise to layers interconnected through weak C-H···S hydrogen bonds. The most peculiar structural feature concerns a dissymmetry between the two dithiolene moieties, while the nickel counterpart is symmetric. Single crystal resistivity measurements show thermally activated behavior for the open-shell gold complexes, with room temperature conductivity values of 0.02-0.04 S·cm(-1) and activation energies strongly influenced by hydrostatic pressure. A thorough theoretical study on nickel anion radical and gold neutral radical bis(dithiolene) complexes applied to the chiral complexes [M(dm-dddt)2] (M = Au, Ni(-)) and to a series of previously reported compounds addressed the issue of symmetry versus asymmetry from an electronic coupling perspective between the two dithiolene ligands. It results that neutral gold complexes with dithiolene ligands without extended delocalization are Class II mixed-valent compounds in the Robin and Day classification, presenting an inherent tendency toward asymmetric structures, which can be however modulated by the intermolecular organization in the solid state.
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Affiliation(s)
- Diana G Branzea
- Université d'Angers , CNRS, Laboratoire Moltech-Anjou, UMR 6200, UFR Sciences, Bât. K, 2 Bd. Lavoisier, 49045 Angers, France
| | - Flavia Pop
- Université d'Angers , CNRS, Laboratoire Moltech-Anjou, UMR 6200, UFR Sciences, Bât. K, 2 Bd. Lavoisier, 49045 Angers, France
| | - Pascale Auban-Senzier
- Laboratoire de Physique des Solides, CNRS UMR 8502, Université Paris-Sud, Université Paris-Saclay , Orsay 91405, France
| | - Rodolphe Clérac
- CNRS, CRPP, UPR 8641 , Pessac F-33600, France.,Univ. Bordeaux, CRPP, UPR 8641 , Pessac F-33600, France
| | - Pere Alemany
- Departament de Ciència de Materials i Química Física and Institut de Química Teòrica i Computacional (IQTCUB), Universitat de Barcelona , Martí i Franquès 1, Barcelona 08028, Spain
| | - Enric Canadell
- Institut de Ciència de Materials de Barcelona (CSIC) , Campus de la UAB, Bellaterra E-08193, Spain
| | - Narcis Avarvari
- Université d'Angers , CNRS, Laboratoire Moltech-Anjou, UMR 6200, UFR Sciences, Bât. K, 2 Bd. Lavoisier, 49045 Angers, France
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44
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Schweinfurth D, Mazzolini M, Neshchadin D, Hoyer C, Geier R, Gatterer K, Trapp N, Gescheidt G, Diederich F. Electronic Structures and Chiroptical Properties of Post-functionalized Helicene Quinones. Chemistry 2016; 22:7152-7. [PMID: 27106784 DOI: 10.1002/chem.201600611] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2016] [Indexed: 11/07/2022]
Abstract
The synthesis of redox-active p- and o-quinones 2-phenylamino-4-phenylimino[6]helicene-1-one 1, 2-phenylamino[6]-helicene-1,4-dione 2, and 4-phenyl[6]helicene-1,2-dione 3 in their enantiopure forms by post-functionalization of (P)- and (M)-1,2-dimethoxy[6]helicene is presented. Structural characterization in solution and in the solid state was accomplished by 2D NMR spectroscopy methods and X-ray diffraction analysis, respectively. Interpretation of electrochemical redox data was accompanied by a detailed orbital picture, derived from DFT calculations. The electronic structures of compounds 1-3 were investigated by UV/Vis and electronic circular dichroism (ECD) spectroscopy, complemented by TD-DFT calculations. Quinones 1-3 were chemically reduced to study the EPR signatures of their respective radical anions. DFT methods were used for the atom assignment of the hyperfine coupling constants. The results are discussed within the context of electrochromic chiral switches and molecular recognition.
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Affiliation(s)
- David Schweinfurth
- Laboratory of Organic Chemistry, ETH Zurich, Vladimir-Prelog-Weg 3, 8093, Zurich, Switzerland
| | - Marcella Mazzolini
- Laboratory of Organic Chemistry, ETH Zurich, Vladimir-Prelog-Weg 3, 8093, Zurich, Switzerland
| | - Dmytro Neshchadin
- Institute of Physical and Theoretical Chemistry, NAWI Graz, Graz University of Technology, Stremayrgasse 9, 8010, Graz, Austria
| | - Carolin Hoyer
- Laboratory of Organic Chemistry, ETH Zurich, Vladimir-Prelog-Weg 3, 8093, Zurich, Switzerland
| | - Roman Geier
- Institute of Physical and Theoretical Chemistry, NAWI Graz, Graz University of Technology, Stremayrgasse 9, 8010, Graz, Austria
| | - Karl Gatterer
- Institute of Physical and Theoretical Chemistry, NAWI Graz, Graz University of Technology, Stremayrgasse 9, 8010, Graz, Austria
| | - Nils Trapp
- Laboratory of Organic Chemistry, ETH Zurich, Vladimir-Prelog-Weg 3, 8093, Zurich, Switzerland
| | - Georg Gescheidt
- Institute of Physical and Theoretical Chemistry, NAWI Graz, Graz University of Technology, Stremayrgasse 9, 8010, Graz, Austria
| | - François Diederich
- Laboratory of Organic Chemistry, ETH Zurich, Vladimir-Prelog-Weg 3, 8093, Zurich, Switzerland.
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45
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Delgado IH, Pascal S, Wallabregue A, Duwald R, Besnard C, Guénée L, Nançoz C, Vauthey E, Tovar RC, Lunkley JL, Muller G, Lacour J. Functionalized cationic [4]helicenes with unique tuning of absorption, fluorescence and chiroptical properties up to the far-red range. Chem Sci 2016; 7:4685-4693. [PMID: 29348909 PMCID: PMC5772034 DOI: 10.1039/c6sc00614k] [Citation(s) in RCA: 74] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2016] [Accepted: 04/06/2016] [Indexed: 01/09/2023] Open
Abstract
Unprecedented regioselective post-functionalization of racemic and enantiopure cationic diaza [4]helicenes is afforded. The peripheral auxochrome substituents allow a general tuning of the electrochemical, photophysical and chiroptical properties of the helical dyes (26 examples). For instance, electronic absorption and circular dichroism are modulated from the orange to near-infrared spectral range (575-750 nm), fluorescence quantum efficiency is enhanced up to 0.55 (631 nm) and circularly polarized luminescence is recorded in the red (|glum| ∼ 10-3).
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Affiliation(s)
- I Hernández Delgado
- Department of Organic Chemistry , University of Geneva , Quai Ernest Ansermet 30 , CH-1211 Geneva 4 , Switzerland
| | - S Pascal
- Department of Organic Chemistry , University of Geneva , Quai Ernest Ansermet 30 , CH-1211 Geneva 4 , Switzerland
| | - A Wallabregue
- Department of Organic Chemistry , University of Geneva , Quai Ernest Ansermet 30 , CH-1211 Geneva 4 , Switzerland
| | - R Duwald
- Department of Organic Chemistry , University of Geneva , Quai Ernest Ansermet 30 , CH-1211 Geneva 4 , Switzerland
| | - C Besnard
- Laboratory of Crystallography , University of Geneva , Quai Ernest Ansermet 24 , CH-1211 Geneva 4 , Switzerland
| | - L Guénée
- Laboratory of Crystallography , University of Geneva , Quai Ernest Ansermet 24 , CH-1211 Geneva 4 , Switzerland
| | - C Nançoz
- Department of Physical Chemistry , University of Geneva , Quai Ernest Ansermet 24 , CH-1211 Geneva 4 , Switzerland
| | - E Vauthey
- Department of Physical Chemistry , University of Geneva , Quai Ernest Ansermet 24 , CH-1211 Geneva 4 , Switzerland
| | - R C Tovar
- Department of Chemistry , San José State University , 1 Washington Square , San José , CA 95192-0101 , USA
| | - J L Lunkley
- Department of Chemistry , San José State University , 1 Washington Square , San José , CA 95192-0101 , USA
| | - G Muller
- Department of Chemistry , San José State University , 1 Washington Square , San José , CA 95192-0101 , USA
| | - J Lacour
- Department of Organic Chemistry , University of Geneva , Quai Ernest Ansermet 30 , CH-1211 Geneva 4 , Switzerland
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46
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Kiran V, Mathew SP, Cohen SR, Hernández Delgado I, Lacour J, Naaman R. Helicenes--A New Class of Organic Spin Filter. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2016; 28:1957-62. [PMID: 26742997 DOI: 10.1002/adma.201504725] [Citation(s) in RCA: 241] [Impact Index Per Article: 30.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2015] [Revised: 10/29/2015] [Indexed: 05/05/2023]
Abstract
Chiral helicene, a fully conjugated system without stereogenic carbon, can filter spins effectively at room temperature, a consequence of the chiral-induced spin-selectivity effect. The chirality dictates the spin of the electrons transferred through helicene, and magnetoresistance devices based on these molecules show antisymmetric magnetoresistance versus H plots.
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Affiliation(s)
- Vankayala Kiran
- Department of Chemical Physics, Weizmann Institute, Rehovot, 76100, Israel
| | - Shinto P Mathew
- Department of Chemical Physics, Weizmann Institute, Rehovot, 76100, Israel
| | - Sidney R Cohen
- Department of Chemical Research Support, Weizmann Institute, Rehovot, 76100, Israel
| | - Irene Hernández Delgado
- Department of Organic Chemistry, University of Geneva, Quai Ernest Ansermet 30, CH-1211, Geneva 4, Switzerland
| | - Jérôme Lacour
- Department of Organic Chemistry, University of Geneva, Quai Ernest Ansermet 30, CH-1211, Geneva 4, Switzerland
| | - Ron Naaman
- Department of Chemical Physics, Weizmann Institute, Rehovot, 76100, Israel
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47
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Yamamoto Y, Sakai H, Yuasa J, Araki Y, Wada T, Sakanoue T, Takenobu T, Kawai T, Hasobe T. Synthetic Control of the Excited-State Dynamics and Circularly Polarized Luminescence of Fluorescent “Push-Pull” Tetrathia[9]helicenes. Chemistry 2016; 22:4263-73. [DOI: 10.1002/chem.201504048] [Citation(s) in RCA: 72] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2015] [Indexed: 12/27/2022]
Affiliation(s)
- Yuki Yamamoto
- Department of Chemistry; Faculty of Science and Technology; Keio University; 3-14-1 Hiyoshi Yokohama, Kanagawa 223-8522 Japan
| | - Hayato Sakai
- Department of Chemistry; Faculty of Science and Technology; Keio University; 3-14-1 Hiyoshi Yokohama, Kanagawa 223-8522 Japan
| | - Junpei Yuasa
- Graduate School of Materials Science; Nara Institute of Science and Technology, NAIST; Ikoma, Nara 630-0192 Japan
- PRESTO (Japan) Science and Technology Agency; Kawaguchi 332-0012 Japan
| | - Yasuyuki Araki
- Institute of Multidisciplinary Research for Advanced Materials; Tohoku University; 2-1-1 Katahira, Aoba-ku Sendai 980-8577 Japan
| | - Takehiko Wada
- Institute of Multidisciplinary Research for Advanced Materials; Tohoku University; 2-1-1 Katahira, Aoba-ku Sendai 980-8577 Japan
| | - Tomo Sakanoue
- Department of Applied Physics; Waseda University; 3-4-1, Okubo, Shinjuku Tokyo 169-8555 Japan
| | - Taishi Takenobu
- Department of Applied Physics; Waseda University; 3-4-1, Okubo, Shinjuku Tokyo 169-8555 Japan
| | - Tsuyoshi Kawai
- Graduate School of Materials Science; Nara Institute of Science and Technology, NAIST; Ikoma, Nara 630-0192 Japan
| | - Taku Hasobe
- Department of Chemistry; Faculty of Science and Technology; Keio University; 3-14-1 Hiyoshi Yokohama, Kanagawa 223-8522 Japan
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48
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Enantiopure Radical Cation Salt Based on Tetramethyl-Bis(ethylenedithio)-Tetrathiafulvalene and Hexanuclear Rhenium Cluster. CRYSTALS 2016. [DOI: 10.3390/cryst6010008] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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49
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Pascal S, Besnard C, Zinna F, Di Bari L, Le Guennic B, Jacquemin D, Lacour J. Zwitterionic [4]helicene: a water-soluble and reversible pH-triggered ECD/CPL chiroptical switch in the UV and red spectral regions. Org Biomol Chem 2016; 14:4590-4. [DOI: 10.1039/c6ob00752j] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The chiroptical switching properties of a readily accessible and water-soluble diaza [4]helicene are disclosed.
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Affiliation(s)
- Simon Pascal
- University of Geneva
- Department of Organic Chemistry
- CH-1211 Geneva 4
- Switzerland
| | - Céline Besnard
- Laboratory of Crystallography
- University of Geneva
- CH-1211 Geneva 4
- Switzerland
| | - Francesco Zinna
- Università di Pisa
- Dipartimento di Chimica e Chimica Industriale
- 56124 Pisa
- Italy
| | - Lorenzo Di Bari
- Università di Pisa
- Dipartimento di Chimica e Chimica Industriale
- 56124 Pisa
- Italy
| | - Boris Le Guennic
- Institut des Sciences Chimiques de Rennes
- UMR 6226 CNRS-Université de Rennes 1
- 35042 Rennes Cedex
- France
| | - Denis Jacquemin
- Laboratoire CEISAM
- UMR 6230 CNRS
- Université de Nantes
- 44322 Nantes Cedex 3
- France
| | - Jérôme Lacour
- University of Geneva
- Department of Organic Chemistry
- CH-1211 Geneva 4
- Switzerland
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50
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