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Barlow SR, Tomkinson D, Halcovitch NR, Evans NH. Rapid synthesis of hydrogen bond templated handcuff rotaxanes. Org Biomol Chem 2024; 22:5393-5400. [PMID: 38873753 DOI: 10.1039/d4ob00672k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2024]
Abstract
The rapid synthesis of hydrogen bond templated handcuff rotaxanes is described. The isolated rotaxanes were characterized by NMR and IR spectroscopies and high resolution mass spectrometry. This report represents a rare demonstration of preparing (2)handcuff [2]rotaxanes by covalently linking separate axles threaded through the rings of a bis-macrocycle by use of the copper catalyzed azide-alkyne cycloaddition (CuAAC) reaction.
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Affiliation(s)
- Sean R Barlow
- Department of Chemistry, Lancaster University, Lancaster, LA1 4YB, UK.
| | - David Tomkinson
- Department of Chemistry, Lancaster University, Lancaster, LA1 4YB, UK.
| | | | - Nicholas H Evans
- Department of Chemistry, Lancaster University, Lancaster, LA1 4YB, UK.
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2
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Bej S, Nandi M, Ghosh P. Development of fluorophoric [2]pseudorotaxanes and [2]rotaxane: selective sensing of Zn(II). Org Biomol Chem 2022; 20:7284-7293. [PMID: 36052954 DOI: 10.1039/d2ob01210c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Fluorophoric [2]pseudorotaxanes {NiPR1(ClO4)2-NiPR3(ClO4)2} are synthesized by utilizing newly designed fluorophoric bidentate ligands (L1-L3) and a heteroditopic naphthalene containing macrocycle (NaphMC) with high yields via Ni(II) templation and π-π stacking interactions. Subsequently, a fluorophoric [2]rotaxane (NAPRTX) is established through a Cu(I) catalysed click reaction between an azide terminated pseudorotaxane, {NiPR4(ClO4)2}, which contains the newly designed fluorophoric ligand L4, and alkyne terminated bulky stopper units. All these fluorophoric [2]pseudorotaxanes and the [2]rotaxane were characterized using numerous techniques such as mass spectrometry, NMR, UV/Vis, PL, and elemental analysis, wherever applicable. Furthermore, to investigate the effect of the fluorophoric moieties, the coordinating ability of chelating units, and size and shape of the three dimensional cavity generated by the mechanical bond in the interlocked [2]rotaxane (NAPRTX), we have performed a sensing study of various metal ions. Thus, the interlocked [2]rotaxane is found to have potential as a selective fluorescent sensor for Zn(II) metal ions over other transition, alkali and alkaline earth metal ions, where the 2,2'-bipyridyl arylvinylene moiety of the axle acts as a fluorescence signalling unit.
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Affiliation(s)
- Somnath Bej
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2A & 2B Raja S. C. Mullick Road, Kolkata 700032, India.
| | - Mandira Nandi
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2A & 2B Raja S. C. Mullick Road, Kolkata 700032, India.
| | - Pradyut Ghosh
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2A & 2B Raja S. C. Mullick Road, Kolkata 700032, India.
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3
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Wu P, Dharmadhikari B, Patra P, Xiong X. Rotaxane nanomachines in future molecular electronics. NANOSCALE ADVANCES 2022; 4:3418-3461. [PMID: 36134345 PMCID: PMC9400518 DOI: 10.1039/d2na00057a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Accepted: 06/16/2022] [Indexed: 06/16/2023]
Abstract
As the electronics industry is integrating more and more new molecules to utilize them in logic circuits and memories to achieve ultra-high efficiency and device density, many organic structures emerged as promising candidates either in conjunction with or as an alternative to conventional semiconducting materials such as but not limited to silicon. Owing to rotaxane's mechanically interlocked molecular structure consisting of a dumbbell-shaped molecule threaded through a macrocycle, they could be excellent nanomachines in molecular switches and memory applications. As a nanomachine, the macrocycle of rotaxane can move reversibly between two stations along its axis under external stimuli, resulting in two stable molecular configurations known as "ON" and "OFF" states of the controllable switch with distinct resistance. There are excellent reports on rotaxane's structure, properties, and function relationship and its application to molecular electronics (Ogino, et al., 1984; Wu, et al., 1991; Bissell, et al., 1994; Collier, et al., 1999; Pease, et al., 2001; Chen, et al., 2003; Green, et al., 2007; Jia, et al., 2016). This comprehensive review summarizes [2]rotaxane and its application to molecular electronics. This review sorts the major research work into a multi-level pyramid structure and presents the challenges of [2]rotaxane's application to molecular electronics at three levels in developing molecular circuits and systems. First, we investigate [2]rotaxane's electrical characteristics with different driving methods and discuss the design considerations and roles based on voltage-driven [2]rotaxane switches that promise the best performance and compatibility with existing solid-state circuits. Second, we examine the solutions for integrating [2]rotaxane molecules into circuits and the limitations learned from these devices keep [2]rotaxane active as a molecular switch. Finally, applying a sandwiched crossbar structure and architecture to [2]rotaxane circuits reduces the fabrication difficulty and extends the possibility of reprogrammable [2]rotaxane arrays, especially at a system level, which eventually promotes the further realization of [2]rotaxane circuits.
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Affiliation(s)
- Peiqiao Wu
- Department of Computer Science and Computer Engineering, University of Bridgeport Bridgeport CT USA
| | - Bhushan Dharmadhikari
- Department of Electrical and Computer Engineering and Technology, Minnesota State University Mankato MN USA
| | - Prabir Patra
- Department of Biomedical Engineering and Mechanical Engineering, University of Bridgeport Bridgeport CT USA
| | - Xingguo Xiong
- Department of Electrical Engineering and Computer Engineering, University of Bridgeport Bridgeport CT USA
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4
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Pearce N, Tarnowska M, Andersen NJ, Wahrhaftig-Lewis A, Pilgrim BS, Champness NR. Mechanically interlocked molecular handcuffs. Chem Sci 2022; 13:3915-3941. [PMID: 35440998 PMCID: PMC8985514 DOI: 10.1039/d2sc00568a] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Accepted: 02/27/2022] [Indexed: 01/20/2023] Open
Abstract
The field of mechanically interlocked molecules that employ a handcuff component are reviewed. The variety of rotaxane and catenane structures that use the handcuff motif to interlock different components are discussed and a new nomenclature, distilling diverse terminologies to a single approach, is proposed. By unifying the interpretation of this class of molecules we identify new opportunities for employing this structural unit for new architectures. Mechanically interlocked molecules that employ a handcuff component provide a pathway to highly unusual structures, a new nomenclature is proposed which helps to identify opportunities for employing this structural unit for new architectures.![]()
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Affiliation(s)
- Nicholas Pearce
- School of Chemistry, University of Birmingham Edgbaston Birmingham B15 2TT UK
| | - Marysia Tarnowska
- School of Chemistry, University of Nottingham, University Park Nottingham NG7 2RD UK
| | - Nathan J Andersen
- School of Chemistry, University of Nottingham, University Park Nottingham NG7 2RD UK
| | | | - Ben S Pilgrim
- School of Chemistry, University of Nottingham, University Park Nottingham NG7 2RD UK
| | - Neil R Champness
- School of Chemistry, University of Birmingham Edgbaston Birmingham B15 2TT UK
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5
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Gaedke M, Hupatz H, Witte F, Rupf SM, Douglas C, Schröder HV, Fischer L, Malischewski M, Paulus B, Schalley CA. Sequence-sorted redox-switchable hetero[3]rotaxanes. Org Chem Front 2022. [DOI: 10.1039/d1qo01553b] [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
Programming the sequence of functional units in redox-switchable hetero[3]rotaxanes is achieved by integrative self-sorting for a library of five crown ethers.
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Affiliation(s)
- Marius Gaedke
- Institut für Chemie und Biochemie der Freien Universität Berlin, Arnimallee 20, 14195 Berlin, Germany
| | - Henrik Hupatz
- Institut für Chemie und Biochemie der Freien Universität Berlin, Arnimallee 20, 14195 Berlin, Germany
| | - Felix Witte
- Institut für Chemie und Biochemie der Freien Universität Berlin, Arnimallee 22, 14195 Berlin, Germany
| | - Susanne M. Rupf
- Institut für Chemie und Biochemie der Freien Universität Berlin, Fabeckstr. 34/36, 14195 Berlin, Germany
| | - Clara Douglas
- Institut für Chemie und Biochemie der Freien Universität Berlin, Arnimallee 20, 14195 Berlin, Germany
| | - Hendrik V. Schröder
- Institut für Chemie und Biochemie der Freien Universität Berlin, Arnimallee 20, 14195 Berlin, Germany
| | - Lukas Fischer
- Institut für Chemie und Biochemie der Freien Universität Berlin, Arnimallee 20, 14195 Berlin, Germany
| | - Moritz Malischewski
- Institut für Chemie und Biochemie der Freien Universität Berlin, Fabeckstr. 34/36, 14195 Berlin, Germany
| | - Beate Paulus
- Institut für Chemie und Biochemie der Freien Universität Berlin, Arnimallee 22, 14195 Berlin, Germany
| | - Christoph A. Schalley
- Institut für Chemie und Biochemie der Freien Universität Berlin, Arnimallee 20, 14195 Berlin, Germany
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6
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Peng X, Wang L, Chen S. Donor–acceptor charge transfer assemblies based on naphthalene diimides(NDIs). J INCL PHENOM MACRO 2021. [DOI: 10.1007/s10847-021-01044-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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7
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Bej S, Nandi M, Ghosh P. A Cd(ii) and Zn(ii) selective naphthyl based [2]rotaxane acts as an exclusive Zn(ii) sensor upon further functionalization with pyrene. Dalton Trans 2021; 50:294-303. [PMID: 33300925 DOI: 10.1039/d0dt03645e] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new multi-functional [2]rotaxane, ROTX, has been synthesized via a Cu(i) catalysed azide-alkyne cycloaddition reaction between Ni(ii) templated azide terminated pseudorotaxane composed of a naphthalene based heteroditopic wheel, NaphMC, and an alkyne terminated stopper. Subsequently, ROTX has been functionalized with pyrene moieties to develop a bifluorophoric [2]rotaxane, PYROTX, having naphthalene and pyrene moieties. Detailed characterization of these two rotaxanes is performed by utilizing several techniques such as ESI-MS, (1D and 2D) NMR, UV/Vis and PL studies. Comparative metal ion sensing studies of NaphMC (a fluorophoric cyclic receptor), ROTX ([2]rotaxane with a naphthyl fluorophore) and PYROTX ([2]rotaxane having naphthyl and pyrene fluorophores) have been performed to determine the effect of dimensionality/functionalization on the metal ion selectivity. Although NaphMC fails to discriminate between metal ions, ROTX serves as a selective sensor for Zn(ii) and Cd(ii). Importantly, PYROTX shows exclusive selectivity towards Zn(ii) over various transition, alkali and alkaline earth metal ions including Cd(ii).
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Affiliation(s)
- Somnath Bej
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2A & 2B Raja S. C. Mullick Road, Kolkata 700032, India.
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8
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Rietsch P, Sobottka S, Hoffmann K, Popov AA, Hildebrandt P, Sarkar B, Resch‐Genger U, Eigler S. Between Aromatic and Quinoid Structure: A Symmetrical UV to Vis/NIR Benzothiadiazole Redox Switch. Chemistry 2020; 26:17361-17365. [PMID: 32997430 PMCID: PMC7839704 DOI: 10.1002/chem.202004009] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Revised: 09/17/2020] [Indexed: 02/03/2023]
Abstract
Reversibly switching the light absorption of organic molecules by redox processes is of interest for applications in sensors, light harvesting, smart materials, and medical diagnostics. This work presents a symmetrical benzothiadiazole (BTD) derivative with a high fluorescence quantum yield in solution and in the crystalline state and shows by spectroelectrochemical analysis that reversible switching of UV absorption in the neutral state, to broadband Vis/NIR absorption in the 1st oxidized state, to sharp band Vis absorption in the 2nd oxidized state, is possible. For the one-electron oxidized species, formation of a delocalized radical is confirmed by electron paramagnetic resonance spectroelectrochemistry. Furthermore, our results reveal an increasing quinoidal distortion upon the 1st and 2nd oxidation, which can be used as the leitmotif for the development of BTD based redox switches.
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Affiliation(s)
- Philipp Rietsch
- Institute of Chemistry and BiochemistryFreie Universität BerlinTakustraße 314195BerlinGermany
| | - Sebastian Sobottka
- Institute of Chemistry and BiochemistryFreie Universität BerlinFabeckstraße 34–3614195BerlinGermany
| | - Katrin Hoffmann
- Department 1, Division BiophotonicsBundesanstalt für Materialforschung und -prüfung (BAM)Richard Willstätter Straße 1112489BerlinGermany
| | - Alexey A. Popov
- Leibniz Institute for Solid State and Materials ResearchHelmholtzstraße 2001069DresdenGermany
| | - Pascal Hildebrandt
- Institute of Chemistry and BiochemistryFreie Universität BerlinTakustraße 314195BerlinGermany
| | - Biprajit Sarkar
- Institute of Chemistry and BiochemistryFreie Universität BerlinFabeckstraße 34–3614195BerlinGermany
- Chair of Inorganic Coordination ChemistryInstitute of Inorganic ChemistryUniversity of StuttgartPfaffenwaldring 5570569StuttgartGermany
| | - Ute Resch‐Genger
- Department 1, Division BiophotonicsBundesanstalt für Materialforschung und -prüfung (BAM)Richard Willstätter Straße 1112489BerlinGermany
| | - Siegfried Eigler
- Institute of Chemistry and BiochemistryFreie Universität BerlinTakustraße 314195BerlinGermany
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9
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Xu Z, Liu F, Zhang T, Gu Y, Lu N, Xu H, Yan X, Song Y, Xing Y, Yu D, Zhang Z, Lu P. Density Functional Theory-Assisted Electrochemical Assay Manipulated by a Donor-Acceptor Structure toward Pharmaceutical Diagnostic. Anal Chem 2020; 92:15297-15305. [PMID: 33185440 DOI: 10.1021/acs.analchem.0c01272] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Oxidative stress is a state of stress injury, which leads to the pathogenesis of most neurodegenerative diseases. Moreover, this is also one of the main reasons for the loss of dopaminergic neurons and the abnormal content of dopamine (DA). In the past decades, a number of studies have found that acetaminophen (AP) is metabolized and distributed in the brain when it is used as a neuroprotective compound. In this context, we proposed an electrochemical sensor based on 9-(4-(10-phenylanthracen-9-yl)phenyl)-9H-carbazole with the goal of diagnosing these two drugs in the body. Carbazole groups can easily be formed into large π-conjugated systems by electropolymerization. The introduction of anthracene exactly combined the carbazole group to establish an efficient electron donor-acceptor pattern, which enhanced π-π interaction with the electrode surface and charge transporting ability. The diagnostic platform showed good sensing activity toward the oxidation of DA and AP. The detection range for DA and AP is from 0.2 to 300 μM and from 0.2 to 400 μM, respectively. The simultaneous detection range is from 0.5 to 250 μM, which is wider than most reports. After a series of electrochemical assessments were determined, the sensor was finally developed to the analysis of pharmaceutical and human serum, displaying a meaningful potential in clinical evaluation.
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Affiliation(s)
- Zhiqian Xu
- College of Chemistry, Jilin University, Changchun 130012, P.R. China
| | - Futong Liu
- State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun 130012, P.R. China
| | - Tingting Zhang
- College of Chemistry, Jilin University, Changchun 130012, P.R. China
| | - Yue Gu
- College of Chemistry, Jilin University, Changchun 130012, P.R. China
| | - Nannan Lu
- College of Chemistry, Jilin University, Changchun 130012, P.R. China
| | - Haixin Xu
- College of Chemistry, Jilin University, Changchun 130012, P.R. China
| | - Xiaoyi Yan
- College of Chemistry, Jilin University, Changchun 130012, P.R. China
| | - Yu Song
- College of Chemistry, Jilin University, Changchun 130012, P.R. China
| | - Yue Xing
- College of Chemistry, Jilin University, Changchun 130012, P.R. China
| | - Dexun Yu
- Jilin Provincial Academy of Traditional Chinese Medicine, Changchun 130021, P.R. China
| | - Zhiquan Zhang
- College of Chemistry, Jilin University, Changchun 130012, P.R. China
| | - Ping Lu
- State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun 130012, P.R. China
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10
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Hupatz H, Gaedke M, Schröder HV, Beerhues J, Valkonen A, Klautzsch F, Müller S, Witte F, Rissanen K, Sarkar B, Schalley CA. Thermodynamic and electrochemical study of tailor-made crown ethers for redox-switchable (pseudo)rotaxanes. Beilstein J Org Chem 2020; 16:2576-2588. [PMID: 33133289 PMCID: PMC7590624 DOI: 10.3762/bjoc.16.209] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2020] [Accepted: 10/02/2020] [Indexed: 12/28/2022] Open
Abstract
Crown ethers are common building blocks in supramolecular chemistry and are frequently applied as cation sensors or as subunits in synthetic molecular machines. Developing switchable and specifically designed crown ethers enables the implementation of function into molecular assemblies. Seven tailor-made redox-active crown ethers incorporating tetrathiafulvalene (TTF) or naphthalene diimide (NDI) as redox-switchable building blocks are described with regard to their potential to form redox-switchable rotaxanes. A combination of isothermal titration calorimetry and voltammetric techniques reveals correlations between the binding energies and redox-switching properties of the corresponding pseudorotaxanes with secondary ammonium ions. For two different weakly coordinating anions, a surprising relation between the enthalpic and entropic binding contributions of the pseudorotaxanes was discovered. These findings were applied to the synthesis of an NDI-[2]rotaxane, which retains similar spectroelectrochemical properties compared to the corresponding free macrocycle. The detailed understanding of the thermodynamic and electrochemical properties of the tailor-made crown ethers lays the foundation for the construction of new types of molecular redox switches with emergent properties.
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Affiliation(s)
- Henrik Hupatz
- Institut für Chemie und Biochemie, Freie Universität Berlin, Arnimallee 20, 14195 Berlin, Germany
| | - Marius Gaedke
- Institut für Chemie und Biochemie, Freie Universität Berlin, Arnimallee 20, 14195 Berlin, Germany
| | - Hendrik V Schröder
- Institut für Chemie und Biochemie, Freie Universität Berlin, Arnimallee 20, 14195 Berlin, Germany.,present address: Department of Chemical and Biological Engineering, Princeton University, Princeton, NJ08544, USA
| | - Julia Beerhues
- Institut für Chemie und Biochemie, Freie Universität Berlin, Fabeckstr. 34/36, 14195 Berlin, Germany.,present address: Lehrstuhl für Anorganische Koordinationschemie, Institut für Anorganische Chemie, Universität Stuttgart, Pfaffenwaldring 55, 70569 Stuttgart, Germany
| | - Arto Valkonen
- Department of Chemistry, University of Jyvaskyla P. O. Box 35, 40014 Jyväskylä, Finland
| | - Fabian Klautzsch
- Institut für Chemie und Biochemie, Freie Universität Berlin, Arnimallee 20, 14195 Berlin, Germany
| | - Sebastian Müller
- Institut für Chemie und Biochemie, Freie Universität Berlin, Arnimallee 20, 14195 Berlin, Germany
| | - Felix Witte
- Institut für Chemie und Biochemie, Freie Universität Berlin, Arnimallee 20, 14195 Berlin, Germany
| | - Kari Rissanen
- Department of Chemistry, University of Jyvaskyla P. O. Box 35, 40014 Jyväskylä, Finland
| | - Biprajit Sarkar
- Institut für Chemie und Biochemie, Freie Universität Berlin, Fabeckstr. 34/36, 14195 Berlin, Germany.,present address: Lehrstuhl für Anorganische Koordinationschemie, Institut für Anorganische Chemie, Universität Stuttgart, Pfaffenwaldring 55, 70569 Stuttgart, Germany
| | - Christoph A Schalley
- Institut für Chemie und Biochemie, Freie Universität Berlin, Arnimallee 20, 14195 Berlin, Germany
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11
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Wu G, Huang Z, Scherman OA. Quantitative Supramolecular Heterodimerization for Efficient Energy Transfer. Angew Chem Int Ed Engl 2020; 59:15963-15967. [PMID: 32495447 PMCID: PMC7540262 DOI: 10.1002/anie.202006530] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Indexed: 12/20/2022]
Abstract
The challenge of quantitatively forming self-assembled heterodimers without other equilibrium by-products is overcome through self-sorting favored by the introduction of designed shape-complementary moieties. Such a supramolecular strategy based on cucurbit[8]uril-directed dimerization is further applied to generate hetero-chromophore dimers quantitatively, leading to efficient energy transfer (>85 %) upon photoexcitation.
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Affiliation(s)
- Guanglu Wu
- Melville Laboratory for Polymer SynthesisDepartment of ChemistryUniversity of CambridgeLensfield RoadCambridgeCB2 1EWUK
| | - Zehuan Huang
- Melville Laboratory for Polymer SynthesisDepartment of ChemistryUniversity of CambridgeLensfield RoadCambridgeCB2 1EWUK
| | - Oren A. Scherman
- Melville Laboratory for Polymer SynthesisDepartment of ChemistryUniversity of CambridgeLensfield RoadCambridgeCB2 1EWUK
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12
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Li Q, Wu Y, Liu Y, Shangguan L, Shi B, Zhu H. Rationally Designed Self-Immolative Rotaxane Sensor Based on Pillar[5]arene for Fluoride Sensing. Org Lett 2020; 22:6662-6666. [DOI: 10.1021/acs.orglett.0c02492] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Qi Li
- Department of Chemistry, Zhejiang University, Hangzhou 310027, P.R. China
| | - Yitao Wu
- Department of Chemistry, Zhejiang University, Hangzhou 310027, P.R. China
| | - Yuezhou Liu
- Department of Chemistry, Zhejiang University, Hangzhou 310027, P.R. China
| | - Liqing Shangguan
- Department of Chemistry, Zhejiang University, Hangzhou 310027, P.R. China
| | - Bingbing Shi
- Key Laboratory of Eco-Functional Polymer Materials of the Ministry of Education, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, P.R. China
| | - Huangtianzhi Zhu
- Department of Chemistry, Zhejiang University, Hangzhou 310027, P.R. China
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13
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Wu G, Huang Z, Scherman OA. Quantitative Supramolecular Heterodimerization for Efficient Energy Transfer. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202006530] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Guanglu Wu
- Melville Laboratory for Polymer Synthesis Department of Chemistry University of Cambridge Lensfield Road Cambridge CB2 1EW UK
| | - Zehuan Huang
- Melville Laboratory for Polymer Synthesis Department of Chemistry University of Cambridge Lensfield Road Cambridge CB2 1EW UK
| | - Oren A. Scherman
- Melville Laboratory for Polymer Synthesis Department of Chemistry University of Cambridge Lensfield Road Cambridge CB2 1EW UK
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14
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Rietsch P, Sobottka S, Hoffmann K, Hildebrandt P, Sarkar B, Resch‐Genger U, Eigler S. Identification of the Irreversible Redox Behavior of Highly Fluorescent Benzothiadiazoles. CHEMPHOTOCHEM 2020. [DOI: 10.1002/cptc.202000050] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Philipp Rietsch
- Institute of Chemistry and BiochemistryFreie Universität Berlin Takustraße 3 14195 Berlin Germany
| | - Sebastian Sobottka
- Institute of Chemistry and BiochemistryFreie Universität Berlin Fabeckstraße 34-36 14195 Berlin Germany
| | - Katrin Hoffmann
- Department 1, Division BiophotonicsBundesanstalt für Materialforschung und -prüfung (BAM) Richard Willstätter Straße 11 12489 Berlin Germany
| | - Pascal Hildebrandt
- Institute of Chemistry and BiochemistryFreie Universität Berlin Takustraße 3 14195 Berlin Germany
| | - Biprajit Sarkar
- Institute of Chemistry and BiochemistryFreie Universität Berlin Fabeckstraße 34-36 14195 Berlin Germany
- Chair of Inorganic Coordination Chemistry Institute of Inorganic ChemistryUniversity of Stuttgart Pfaffenwaldring 55 70569 Stuttgart Germany
| | - Ute Resch‐Genger
- Department 1, Division BiophotonicsBundesanstalt für Materialforschung und -prüfung (BAM) Richard Willstätter Straße 11 12489 Berlin Germany
| | - Siegfried Eigler
- Institute of Chemistry and BiochemistryFreie Universität Berlin Takustraße 3 14195 Berlin Germany
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15
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Nandi M, Bej S, Bhunia S, Ghosh P. Template Directed Syntheses of Electrochemically Active [2]Rotaxanes: Anion Binding and Redox Studies. ChemElectroChem 2020. [DOI: 10.1002/celc.201901655] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Mandira Nandi
- School of Chemical SciencesIndian Association for the Cultivation of Science 2 A & 2B Raja S. C. Mullick Road Kolkata 700032 India
| | - Somnath Bej
- School of Chemical SciencesIndian Association for the Cultivation of Science 2 A & 2B Raja S. C. Mullick Road Kolkata 700032 India
| | - Sarmistha Bhunia
- School of Chemical SciencesIndian Association for the Cultivation of Science 2 A & 2B Raja S. C. Mullick Road Kolkata 700032 India
| | - Pradyut Ghosh
- School of Chemical SciencesIndian Association for the Cultivation of Science 2 A & 2B Raja S. C. Mullick Road Kolkata 700032 India
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16
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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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17
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Kothapalli SSK, Kannekanti VK, Ye Z, Yang Z, Chen L, Cai Y, Zhu B, Feng W, Yuan L. Light-controlled switchable complexation by a non-photoresponsive hydrogen-bonded amide macrocycle. Org Chem Front 2020. [DOI: 10.1039/d0qo00116c] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
A light controlled switchable host–guest system based on a non-photoresponsive H-bonded macrocycle and pyridinium salts was developed using a photoacid.
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Affiliation(s)
- Sudarshana Santhosh Kumar Kothapalli
- College of Chemistry
- Key Laboratory for Radiation Physics and Technology of Ministry of Education
- Institute of Nuclear Science and Technology
- Sichuan University
- Chengdu 610064
| | - Vijaya Kumar Kannekanti
- College of Chemistry
- Key Laboratory for Radiation Physics and Technology of Ministry of Education
- Institute of Nuclear Science and Technology
- Sichuan University
- Chengdu 610064
| | - Zecong Ye
- College of Chemistry
- Key Laboratory for Radiation Physics and Technology of Ministry of Education
- Institute of Nuclear Science and Technology
- Sichuan University
- Chengdu 610064
| | - Zhiyao Yang
- College of Chemistry
- Key Laboratory for Radiation Physics and Technology of Ministry of Education
- Institute of Nuclear Science and Technology
- Sichuan University
- Chengdu 610064
| | - Lixi Chen
- College of Chemistry
- Key Laboratory for Radiation Physics and Technology of Ministry of Education
- Institute of Nuclear Science and Technology
- Sichuan University
- Chengdu 610064
| | - Yimin Cai
- College of Chemistry
- Key Laboratory for Radiation Physics and Technology of Ministry of Education
- Institute of Nuclear Science and Technology
- Sichuan University
- Chengdu 610064
| | - Beichen Zhu
- College of Chemistry
- Key Laboratory for Radiation Physics and Technology of Ministry of Education
- Institute of Nuclear Science and Technology
- Sichuan University
- Chengdu 610064
| | - Wen Feng
- College of Chemistry
- Key Laboratory for Radiation Physics and Technology of Ministry of Education
- Institute of Nuclear Science and Technology
- Sichuan University
- Chengdu 610064
| | - Lihua Yuan
- College of Chemistry
- Key Laboratory for Radiation Physics and Technology of Ministry of Education
- Institute of Nuclear Science and Technology
- Sichuan University
- Chengdu 610064
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18
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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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19
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Schröder HV, Schalley CA. Electrochemically switchable rotaxanes: recent strides in new directions. Chem Sci 2019; 10:9626-9639. [PMID: 32110308 PMCID: PMC7020790 DOI: 10.1039/c9sc04118d] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2019] [Accepted: 10/03/2019] [Indexed: 12/13/2022] Open
Abstract
Are they still electrifying? Electrochemically switchable rotaxanes are well known for their ability to efficiently undergo changes of (co-)conformation and properties under redox-control. Thus, these mechanically interlocked assemblies represent an auspicious liaison between the fields of molecular switches and molecular electronics. Since the first reported example of a redox-switchable molecular shuttle in 1994, improved tools of organic and supramolecular synthesis have enabled sophisticated new architectures, which provide precise control over properties and function. This perspective covers recent advances in the area of electrochemically active rotaxanes including novel molecular switches and machines, metal-containing rotaxanes, non-equilibrium systems and potential applications.
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Affiliation(s)
- Hendrik V Schröder
- 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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20
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Schröder HV, Stein F, Wollschläger JM, Sobottka S, Gaedke M, Sarkar B, Schalley CA. Accordion‐Like Motion in Electrochemically Switchable Crown Ether/Ammonium Oligorotaxanes. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201813265] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Hendrik V. Schröder
- Institut für Chemie und BiochemieFreie Universität Berlin Takustraße 3 14195 Berlin Germany
| | - Felix Stein
- Institut für Chemie und BiochemieFreie Universität Berlin Takustraße 3 14195 Berlin Germany
| | - Jan M. Wollschläger
- Institut für Chemie und BiochemieFreie Universität Berlin Takustraße 3 14195 Berlin Germany
| | - Sebastian Sobottka
- Institut für Chemie und BiochemieFreie Universität Berlin Fabeckstraße 34/36 14195 Berlin Germany
| | - Marius Gaedke
- Institut für Chemie und BiochemieFreie Universität Berlin Takustraße 3 14195 Berlin Germany
| | - Biprajit Sarkar
- Institut für Chemie und BiochemieFreie Universität Berlin Fabeckstraße 34/36 14195 Berlin Germany
| | - Christoph A. Schalley
- Institut für Chemie und BiochemieFreie Universität Berlin Takustraße 3 14195 Berlin Germany
- School of Life SciencesNorthwestern Polytechnical University 127 Youyi Xilu, Xi'an Shaanxi 710072 P. R. China
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21
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Schröder HV, Stein F, Wollschläger JM, Sobottka S, Gaedke M, Sarkar B, Schalley CA. Accordion-Like Motion in Electrochemically Switchable Crown Ether/Ammonium Oligorotaxanes. Angew Chem Int Ed Engl 2019; 58:3496-3500. [PMID: 30623543 DOI: 10.1002/anie.201813265] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2018] [Indexed: 12/13/2022]
Abstract
Reversible oxidation reactions in electrochemically switchable oligorotaxanes with tetrathiafulvalene (TTF) decorated 24-crown-8 ether wheels generate intramolecular mixed-valence and radical-cation interactions between the wheels. This induces shuttling of the wheels and a contraction of inter-wheel distances. Further oxidation generates repulsive forces between the TTFs and maximizes the inter-wheel distances instead. These interactions and co-conformational changes were not observed for structurally similar controls in which acetyl groups along the axle prevent translational motion of the wheels. This operation mode of oligorotaxanes, which is reminiscent of an accordion-like motion, is promising for functional materials and nanodevices such as piston-type rotaxane motors.
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Affiliation(s)
- Hendrik V Schröder
- Institut für Chemie und Biochemie, Freie Universität Berlin, Takustraße 3, 14195, Berlin, Germany
| | - Felix Stein
- Institut für Chemie und Biochemie, Freie Universität Berlin, Takustraße 3, 14195, Berlin, Germany
| | - Jan M Wollschläger
- Institut für Chemie und Biochemie, Freie Universität Berlin, Takustraße 3, 14195, Berlin, Germany
| | - Sebastian Sobottka
- Institut für Chemie und Biochemie, Freie Universität Berlin, Fabeckstraße 34/36, 14195, Berlin, Germany
| | - Marius Gaedke
- Institut für Chemie und Biochemie, Freie Universität Berlin, Takustraße 3, 14195, Berlin, Germany
| | - Biprajit Sarkar
- Institut für Chemie und Biochemie, Freie Universität Berlin, Fabeckstraße 34/36, 14195, Berlin, Germany
| | - Christoph A Schalley
- Institut für Chemie und Biochemie, Freie Universität Berlin, Takustraße 3, 14195, Berlin, Germany.,School of Life Sciences, Northwestern Polytechnical University, 127 Youyi Xilu, Xi'an, Shaanxi, 710072, P. R. China
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22
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Schröder HV, Witte F, Gaedke M, Sobottka S, Suntrup L, Hupatz H, Valkonen A, Paulus B, Rissanen K, Sarkar B, Schalley CA. An aryl-fused redox-active tetrathiafulvalene with enhanced mixed-valence and radical-cation dimer stabilities. Org Biomol Chem 2019; 16:2741-2747. [PMID: 29594290 DOI: 10.1039/c8ob00415c] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Molecular recognition of stable organic radicals is a relatively novel, but important structural binding motif in supramolecular chemistry. Here, we report on a redox-switchable veratrole-fused tetrathiafulvalene derivative VTTF which is ideally suited for this purpose and for the incorporation into stimuli-responsive systems. As revealed by electrochemistry, UV/Vis measurements, X-ray analysis, and electrocrystallisation, VTTF can be reversibly oxidised to the corresponding radical-cation or dication which shows optoelectronic and structural propterties similar to tetrathiafulvalene and tetrakis(methylthio)tetrathiafulvalene. However, theoretical calculations, variable temperature EPR, and NIR spectroscopy indicate that the dispersion-driven binding in the mixed-valence dimer (VTTF2)˙+ (KMV = 69 M-1 in CH2Cl2) and the radical-cation dimer (VTTF˙+)2 (KRC = 38 M-1 in CH3CN) is significantly enhanced by the additional veratrole π-surface in comparison to pristine tetrathiafulvalene.
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Affiliation(s)
- Hendrik V Schröder
- Institut für Chemie und Biochemie, Freie Universität Berlin, Takustr. 3, 14195 Berlin, Germany.
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23
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Ng AWH, Au‐Yeung HY. Molecular Links and Knots from Naphthalenediimide: A Balance of Weak Interactions. Chem Asian J 2019; 14:1602-1612. [DOI: 10.1002/asia.201801681] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2018] [Indexed: 11/06/2022]
Affiliation(s)
- Antony Wing Hung Ng
- Department of ChemistryThe University of Hong Kong Pokfulam Road Hong Kong P. R. China
| | - Ho Yu Au‐Yeung
- Department of ChemistryThe University of Hong Kong Pokfulam Road Hong Kong P. R. China
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24
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Schröder HV, Mekic A, Hupatz H, Sobottka S, Witte F, Urner LH, Gaedke M, Pagel K, Sarkar B, Paulus B, Schalley CA. Switchable synchronisation of pirouetting motions in a redox-active [3]rotaxane. NANOSCALE 2018; 10:21425-21433. [PMID: 30427015 DOI: 10.1039/c8nr05534c] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
In this study, the crown/ammonium [3]rotaxane R2 is reported which allows a switchable synchronisation of wheel pirouetting motions. The rotaxane is composed of a dumbbell-shaped axle molecule with two mechanically interlocked macrocycles which are decorated with a redox-active tetrathiafulvalene (TTF) unit. Electrochemical, spectroscopic, and electron paramagnetic resonance experiments reveal that rotaxane R2 can be reversibly switched between four stable oxidation states (R2, R2˙+, R22(˙+), and R24+). The oxidations enable non-covalent, cofacial interactions between the TTF units in each state-including a stabilised mixed-valence (TTF2)˙+ and a radical-cation (TTF˙+)2 dimer interaction-which dictate a syn (R2, R2˙+, and R22(˙+)) or anti (R24+) ground state co-conformation of the wheels in the rotaxane. Furthermore, the strength of these wheel-wheel interactions varies with the oxidation state, and thus electrochemical switching allows a controllable synchronisation of the wheels' pirouetting motions. DFT calculations explore the potential energy surface of the counter-rotation of the two interacting wheels in all oxidation states. The controlled coupling of pirouetting motions in rotaxanes can lead to novel molecular gearing systems which transmit rotational motion by switchable non-covalent interactions.
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Affiliation(s)
- Hendrik V Schröder
- Institut für Chemie und Biochemie, Freie Universität Berlin, Takustraße 3, 14195 Berlin, Germany.
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25
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Chakraborty S, Ray D, Aswal VK, Ghosh S. Multi-Stimuli-Responsive Directional Assembly of an Amphiphilic Donor-Acceptor Alternating Supramolecular Copolymer. Chemistry 2018; 24:16379-16387. [DOI: 10.1002/chem.201803170] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2018] [Indexed: 01/20/2023]
Affiliation(s)
- Saptarshi Chakraborty
- Polymer Science Unit; Indian Association for the Cultivation of Science; 2A and 2B Raja S. C. Mullick Road 700032 Kolkata India
| | - Debes Ray
- Solid State Physics Division; Bhabha Atomic Research Centre; Trombay Mumbai 400085 India
| | - Vinod K. Aswal
- Solid State Physics Division; Bhabha Atomic Research Centre; Trombay Mumbai 400085 India
| | - Suhrit Ghosh
- Polymer Science Unit; Indian Association for the Cultivation of Science; 2A and 2B Raja S. C. Mullick Road 700032 Kolkata India
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26
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Schröder HV, Schalley CA. Tetrathiafulvalene - a redox-switchable building block to control motion in mechanically interlocked molecules. Beilstein J Org Chem 2018; 14:2163-2185. [PMID: 30202469 PMCID: PMC6122308 DOI: 10.3762/bjoc.14.190] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2018] [Accepted: 08/01/2018] [Indexed: 11/23/2022] Open
Abstract
With the rise of artificial molecular machines, control of motion on the nanoscale has become a major contemporary research challenge. Tetrathiafulvalenes (TTFs) are one of the most versatile and widely used molecular redox switches to generate and control molecular motion. TTF can easily be implemented as functional unit into molecular and supramolecular structures and can be reversibly oxidized to a stable radical cation or dication. For over 20 years, TTFs have been key building blocks for the construction of redox-switchable mechanically interlocked molecules (MIMs) and their electrochemical operation has been thoroughly investigated. In this review, we provide an introduction into the field of TTF-based MIMs and their applications. A brief historical overview and a selection of important examples from the past until now are given. Furthermore, we will highlight our latest research on TTF-based rotaxanes.
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Affiliation(s)
- Hendrik V Schröder
- Institut für Chemie und Biochemie, Organische Chemie, Freie Universität Berlin, Takustraße 3, 14195 Berlin, Germany
| | - Christoph A Schalley
- Institut für Chemie und Biochemie, Organische Chemie, Freie Universität Berlin, Takustraße 3, 14195 Berlin, Germany
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27
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Diac A, Matache M, Grosu I, Hădade ND. Naphthalenediimide - A Unique Motif in Macrocyclic and Interlocked Supramolecular Structures. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201701362] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Andreea Diac
- Faculty of Chemistry and Chemical Engineering, Supramolecular Organic and Organometallic Chemistry Centre; “Babeş-Bolyai” University; 11 Arany Janos Str. RO-400028 Cluj-Napoca Romania
| | - Mihaela Matache
- University of Bucharest; Faculty of Chemistry, Department of Organic Chemistry, Biochemistry and Catalysis, Research Centre of Applied Organic Chemistry; 90-92 Panduri Street RO-050663 Bucharest Romania
| | - Ion Grosu
- Faculty of Chemistry and Chemical Engineering, Supramolecular Organic and Organometallic Chemistry Centre; “Babeş-Bolyai” University; 11 Arany Janos Str. RO-400028 Cluj-Napoca Romania
| | - Niculina D. Hădade
- Faculty of Chemistry and Chemical Engineering, Supramolecular Organic and Organometallic Chemistry Centre; “Babeş-Bolyai” University; 11 Arany Janos Str. RO-400028 Cluj-Napoca Romania
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28
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Santra S, Bej S, Nandi M, Mondal P, Ghosh P. Syntheses of metallo-pseudorotaxanes, rotaxane and post-synthetically functionalized rotaxane: a comprehensive spectroscopic study and dynamic properties. Dalton Trans 2017; 46:13300-13313. [PMID: 28771266 DOI: 10.1039/c7dt01364g] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Herein, a bis-amido tris-amine macrocycle and five bipyridine-based bidentate chelating ligands were investigated towards various divalent transition metal ion (NiII, CoII, CuII, and ZnII)-templated syntheses of metallo [2]pseudorotaxanes. The formation of these ternary complexes was elucidated via different spectroscopic techniques such as ESI-MS, absorption spectroscopy, EPR spectroscopy, and single-crystal X-ray diffraction studies wherever possible. Azide-terminated NiII, CoII, CuII, ZnII-templated [2]pseudorotaxanes were explored to generate [2]rotaxane, ROT, via reaction with an alkyne-terminated triphenylene unit as a stopper under the mild reaction condition of the CuI-catalyzed azide-alkyne cycloaddition reaction. NiII-templated [2]pseudorotaxane was found to be the best precursor towards the high-yield synthesis of ROT. The interpenetrative nature of the center piece in metal-free rotaxane was also established through various spectroscopic techniques such as ESI-MS and 1D and 2D (COSY, NOESY, ROESY, and DOSY) NMR spectroscopy. Furthermore, ROT was functionalized via tri-acetylation as AcROT to incorporate three tertiary amides at the tris-amine centers; this AcROT exhibited rotamer-induced molecular motions in an interpenetrated system via the formation of multiple conformers/co-conformers. Additionally, the existence of multiple rotamers was established via variable-temperature NMR spectroscopic studies. Li+ and 12-crown-4 were found to be suitable for the reversible conformation/co-conformation fixation of tri-acetylated bis-amido tris-amine macrocyclic wheel-based rotaxane.
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Affiliation(s)
- Saikat Santra
- Department of Inorganic Chemistry, Indian Association for the Cultivation of Science, 2A & 2B Raja S. C. Mullick Road, Kolkata 700 032, India.
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29
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Schröder HV, Sobottka S, Nößler M, Hupatz H, Gaedke M, Sarkar B, Schalley CA. Impact of mechanical bonding on the redox-switching of tetrathiafulvalene in crown ether-ammonium [2]rotaxanes. Chem Sci 2017; 8:6300-6306. [PMID: 28989663 PMCID: PMC5628401 DOI: 10.1039/c7sc02694c] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2017] [Accepted: 07/07/2017] [Indexed: 12/15/2022] Open
Abstract
Switchable crown ether-ammonium [2]rotaxanes with a redox-active tetrathiafulvalene (TTF) unit implemented in their wheels were synthesised and fully characterised. Reversible operation in two modes is possible, in which the [2]rotaxane's axle is either charged or neutral. Cyclic voltammetry experiments reveal the effects of mechanical bonding on the electrochemical properties of TTF and show the [2]rotaxanes to perform a distinct function in both modes. In the charged mode, redox-switching is dominated by strong electrostatic repulsion in the [2]rotaxane which subsequently leads to a macrocycle translation along the axle. In the non-charged mode, a selective energetic stabilisation of TTF radical cations is observed, which can be attributed to an interplay of weak electrostatic interactions between wheel and axle.
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Affiliation(s)
- Hendrik V Schröder
- Institut für Chemie und Biochemie , Freie Universität Berlin , Takustr. 3 , 14195 Berlin , Germany .
| | - Sebastian Sobottka
- Institut für Chemie und Biochemie , Freie Universität Berlin , Fabeckstr. 34/36 , 14195 Berlin , Germany
| | - Maite Nößler
- Institut für Chemie und Biochemie , Freie Universität Berlin , Takustr. 3 , 14195 Berlin , Germany .
| | - Henrik Hupatz
- Institut für Chemie und Biochemie , Freie Universität Berlin , Takustr. 3 , 14195 Berlin , Germany .
| | - Marius Gaedke
- Institut für Chemie und Biochemie , Freie Universität Berlin , Takustr. 3 , 14195 Berlin , Germany .
| | - Biprajit Sarkar
- Institut für Chemie und Biochemie , Freie Universität Berlin , Fabeckstr. 34/36 , 14195 Berlin , Germany
| | - Christoph A Schalley
- Institut für Chemie und Biochemie , Freie Universität Berlin , Takustr. 3 , 14195 Berlin , Germany .
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30
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Schröder HV, Wollschläger JM, Schalley CA. Redox-controlled self-inclusion of a lasso-type pseudo[1]rotaxane. Chem Commun (Camb) 2017; 53:9218-9221. [PMID: 28766588 DOI: 10.1039/c7cc05259f] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The self-inclusion behavior of a tetrathiafulvalene-containing lasso-type pseudo[1]rotaxane can be reversibly switched between threaded and non-threaded states by redox-stimuli. The switching mechanism was investigated by cyclic voltammetry in solution and monitored by ion mobility mass spectrometry in the gas phase.
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Affiliation(s)
- Hendrik V Schröder
- Institut für Chemie und Biochemie, Freie Universität Berlin, Takustr. 3, 14195 Berlin, Germany.
| | - Jan M Wollschläger
- 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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31
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Yang LP, Jia F, Cui JS, Lu SB, Jiang W. Light-Controlled Switching of a Non-photoresponsive Molecular Shuttle. Org Lett 2017; 19:2945-2948. [DOI: 10.1021/acs.orglett.7b01184] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Liu-Pan Yang
- Department
of Chemistry, South University of Science and Technology of China, Xueyuan Boulevard 1088, Nanshan District, Shenzhen 518055, P. R. China
- Dalian
Institute of Chemical Physics, Chinese Academy of Science, Dalian 116023, P. R. China
| | - Fei Jia
- Department
of Chemistry, South University of Science and Technology of China, Xueyuan Boulevard 1088, Nanshan District, Shenzhen 518055, P. R. China
| | - Jie-Shun Cui
- Department
of Chemistry, South University of Science and Technology of China, Xueyuan Boulevard 1088, Nanshan District, Shenzhen 518055, P. R. China
| | - Song-Bo Lu
- Department
of Chemistry, South University of Science and Technology of China, Xueyuan Boulevard 1088, Nanshan District, Shenzhen 518055, P. R. China
| | - Wei Jiang
- Department
of Chemistry, South University of Science and Technology of China, Xueyuan Boulevard 1088, Nanshan District, Shenzhen 518055, P. R. China
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32
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von Krbek LKS, Schalley CA, Thordarson P. Assessing cooperativity in supramolecular systems. Chem Soc Rev 2017; 46:2622-2637. [DOI: 10.1039/c7cs00063d] [Citation(s) in RCA: 162] [Impact Index Per Article: 23.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
In this tutorial review, different aspects of cooperativity in supramolecular chemistry and their thermodynamic analysis are discussed.
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Affiliation(s)
| | | | - Pall Thordarson
- School of Chemistry
- The Australian Centre for Nanomedicine and the ARC Centre of Excellence in Convergent Bio-Nano Science and Technology
- University of New South Wales
- Australia
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