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Valiyev I, Paul I, Li YF, Elramadi E, Schmittel M. Interconversion between multicomponent slider-on-deck and palladium capsule: regulation of catalysis and encapsulation. Dalton Trans 2024; 53:3454-3458. [PMID: 38305461 DOI: 10.1039/d3dt04300b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2024]
Abstract
When the slider-on-deck [Cu3(1)(2)]3+ and guest G were treated with palladium(II) ions, the biped 2 was released from [Cu3(1)(2)]3+ generating the nanocage [Pd2(2)4(G)]4+ with guest G being encapsulated (NetState-II). This transformation that was reversed by the addition of DMAP enabled modulation of both the overall fluorescence and the activity of copper(I) catalyzing an aza Hopf cyclization.
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Affiliation(s)
- Isa Valiyev
- Center of Micro and Nanochemistry and (Bio)Technology, Organische Chemie I, School of Science and Engineering, Universität Siegen, Adolf-Reichwein-Str. 2, D-57068 Siegen, Germany.
| | - Indrajit Paul
- Center of Micro and Nanochemistry and (Bio)Technology, Organische Chemie I, School of Science and Engineering, Universität Siegen, Adolf-Reichwein-Str. 2, D-57068 Siegen, Germany.
| | - Yi-Fan Li
- Center of Micro and Nanochemistry and (Bio)Technology, Organische Chemie I, School of Science and Engineering, Universität Siegen, Adolf-Reichwein-Str. 2, D-57068 Siegen, Germany.
| | - Emad Elramadi
- Center of Micro and Nanochemistry and (Bio)Technology, Organische Chemie I, School of Science and Engineering, Universität Siegen, Adolf-Reichwein-Str. 2, D-57068 Siegen, Germany.
| | - Michael Schmittel
- Center of Micro and Nanochemistry and (Bio)Technology, Organische Chemie I, School of Science and Engineering, Universität Siegen, Adolf-Reichwein-Str. 2, D-57068 Siegen, Germany.
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Mondal D, Ghosh A, Paul I, Schmittel M. Fuel Acid Drives Base Catalysis and Supramolecular Cage-to-Device Transformation under Dissipative Conditions. Org Lett 2021; 24:69-73. [PMID: 34913702 DOI: 10.1021/acs.orglett.1c03654] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
In State-I, a mixture comprising a DABCO-bridged tris(zinc-porphyrin) double decker and a free biped (=slider), catalysis was OFF. Acid addition (TFA or Di-Stefano fuel acid) to State-I liberated DABCO-H+ while generating a highly dynamic slider-on-deck device (State-II). The released DABCO-H+ acted as a base organocatalyst for a Knoevenagel reaction (catalysis ON). The system was reversed to State-I (catalysis OFF) by reducing the acidity in the system (by adding DBU or via the fuel-derived base).
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Affiliation(s)
- Debabrata Mondal
- Center of Micro- and Nanochemistry and (Bio)Technology (Cμ), Organische Chemie I, Adolf-Reichwein-Str. 2, D-57068 Siegen, Germany
| | - Amit Ghosh
- Center of Micro- and Nanochemistry and (Bio)Technology (Cμ), Organische Chemie I, Adolf-Reichwein-Str. 2, D-57068 Siegen, Germany
| | - Indrajit Paul
- Center of Micro- and Nanochemistry and (Bio)Technology (Cμ), Organische Chemie I, Adolf-Reichwein-Str. 2, D-57068 Siegen, Germany
| | - Michael Schmittel
- Center of Micro- and Nanochemistry and (Bio)Technology (Cμ), Organische Chemie I, Adolf-Reichwein-Str. 2, D-57068 Siegen, Germany
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Schmittel M, Howlader P. Toward Molecular Cybernetics - the Art of Communicating Chemical Systems. CHEM REC 2020; 21:523-543. [PMID: 33350570 DOI: 10.1002/tcr.202000126] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Revised: 11/27/2020] [Accepted: 11/30/2020] [Indexed: 11/10/2022]
Abstract
The emerging field of molecular cybernetics has the potential to widely broaden our perception of chemistry. Chemistry will develop beyond its current focus that is mainly concerned with single transformations, pure compounds, and/or defined mixtures. On this way, chemistry will become autonomous, networked and smart through communicating molecules each of which serves a control engineering purpose, like the set of wheels in the machinery of life. The present personal account describes our latest developments in this field.
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Affiliation(s)
- Michael Schmittel
- Center of Micro and Nanochemistry and Engineering, Organische Chemie I, University of Siegen, Adolf-Reichwein Str. 2, 57068, Siegen, Germany
| | - Prodip Howlader
- Center of Micro and Nanochemistry and Engineering, Organische Chemie I, University of Siegen, Adolf-Reichwein Str. 2, 57068, Siegen, Germany
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Saha S, Ghosh A, Paululat T, Schmittel M. Allosteric regulation of rotational, optical and catalytic properties within multicomponent machinery. Dalton Trans 2020; 49:8693-8700. [DOI: 10.1039/d0dt01961e] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Allosteric regulation of various functions within multicomponent machinery was triggered by the reversible transformation of nanorotors (k298 = 44–61 kHz) to “dimeric” supramolecular structures (k298 = 0.60 kHz) upon adding a stoichiometric chemical stimulus.
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Affiliation(s)
- Suchismita Saha
- Center of Micro- and Nanochemistry and Engineering
- Department Chemie – Biologie
- Organische Chemie I
- D-57068 Siegen
- Germany
| | - Amit Ghosh
- Center of Micro- and Nanochemistry and Engineering
- Department Chemie – Biologie
- Organische Chemie I
- D-57068 Siegen
- Germany
| | - Thomas Paululat
- Department Chemie – Biologie
- Organische Chemie II
- D-57068 Siegen
- Germany
| | - Michael Schmittel
- Center of Micro- and Nanochemistry and Engineering
- Department Chemie – Biologie
- Organische Chemie I
- D-57068 Siegen
- Germany
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Rajasekaran VV, Paul I, Schmittel M. Reversible switching from a three- to a nine-fold degenerate dynamic slider-on-deck through catenation. Chem Commun (Camb) 2020; 56:12821-12824. [DOI: 10.1039/d0cc05578f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Two dynamic slider-on-deck assemblies, i.e. a two-component threefold degenerate (k298 = 34.9 kHz) and a catenated three-component ninefold degenerate (k298 = 27.9 kHz) system with allosteric effects on the sliding rates, were quantitatively interconverted.
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Affiliation(s)
| | - Indrajit Paul
- Center of Micro and Nanochemistry and Engineering
- Organische Chemie I
- Universität Siegen
- Germany
| | - Michael Schmittel
- Center of Micro and Nanochemistry and Engineering
- Organische Chemie I
- Universität Siegen
- Germany
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Saha S, Biswas PK, Paul I, Schmittel M. Selective and reversible interconversion of nanosliders commanded by remote control via metal-ion signaling. Chem Commun (Camb) 2019; 55:14733-14736. [PMID: 31750846 DOI: 10.1039/c9cc07415e] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
A multi-device network mainly consisting of two two-component nanosliders was formed by self-sorting of six components. Addition/removal of zinc(ii) ions reversibly reorganized the network by chemical signaling involving the translocation of copper(i) from a relay station followed by the selective disassembly/assembly of one of both multi-component devices. The thus liberated machine parts served to erect a three-component nanoslider alongside the other unchanged two-component nanoslider.
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Affiliation(s)
- Suchismita Saha
- Center of Micro and Nanochemistry and Engineering, Organische Chemie I, Universität Siegen, Adolf-Reichwein-Str. 2, D-57068 Siegen, Germany.
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Goswami A, Saha S, Biswas PK, Schmittel M. (Nano)mechanical Motion Triggered by Metal Coordination: from Functional Devices to Networked Multicomponent Catalytic Machinery. Chem Rev 2019; 120:125-199. [DOI: 10.1021/acs.chemrev.9b00159] [Citation(s) in RCA: 76] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Abir Goswami
- Center of Micro- and Nanochemistry and Engineering, Organische Chemie I, Universität Siegen, Adolf-Reichwein-Strase 2, D-57068 Siegen, Germany
| | - Suchismita Saha
- Center of Micro- and Nanochemistry and Engineering, Organische Chemie I, Universität Siegen, Adolf-Reichwein-Strase 2, D-57068 Siegen, Germany
| | - Pronay Kumar Biswas
- Center of Micro- and Nanochemistry and Engineering, Organische Chemie I, Universität Siegen, Adolf-Reichwein-Strase 2, D-57068 Siegen, Germany
| | - Michael Schmittel
- Center of Micro- and Nanochemistry and Engineering, Organische Chemie I, Universität Siegen, Adolf-Reichwein-Strase 2, D-57068 Siegen, Germany
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Goswami A, Paululat T, Schmittel M. Switching Dual Catalysis without Molecular Switch: Using A Multicomponent Information System for Reversible Reconfiguration of Catalytic Machinery. J Am Chem Soc 2019; 141:15656-15663. [DOI: 10.1021/jacs.9b07737] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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Paul I, Samanta D, Gaikwad S, Schmittel M. Selective detection of DABCO using a supramolecular interconversion as fluorescence reporter. Beilstein J Org Chem 2019; 15:1371-1378. [PMID: 31293687 PMCID: PMC6604717 DOI: 10.3762/bjoc.15.137] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2019] [Accepted: 05/27/2019] [Indexed: 11/23/2022] Open
Abstract
The quantitative double self-sorting between the three-component rectangle [Cu4(1)2(2)2]4+ and the four-component sandwich complex [Cu2(1)(2)(4)]2+ is triggered by inclusion and release of DABCO (4). The fully reversible and clean switching between two multicomponent supramolecular architectures can be monitored by fluorescence changes at the zinc porphyrin sites. The structural changes are accompanied by a huge spatial contraction/expansion of the zinc porphyrin–zinc porphyrin distances that change from 31.2/38.8 Å to 6.6 Å and back. The supramolecular interconversion was used for the highly selective detection of DABCO in a mixture of other similar compounds.
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Affiliation(s)
- Indrajit Paul
- Center of Micro and Nanochemistry and Engineering, Organische Chemie I, Universität Siegen, Adolf-Reichwein-Str. 2, D-57068 Siegen, Germany
| | - Debabrata Samanta
- Center of Micro and Nanochemistry and Engineering, Organische Chemie I, Universität Siegen, Adolf-Reichwein-Str. 2, D-57068 Siegen, Germany
| | - Sudhakar Gaikwad
- Center of Micro and Nanochemistry and Engineering, Organische Chemie I, Universität Siegen, Adolf-Reichwein-Str. 2, D-57068 Siegen, Germany
| | - Michael Schmittel
- Center of Micro and Nanochemistry and Engineering, Organische Chemie I, Universität Siegen, Adolf-Reichwein-Str. 2, D-57068 Siegen, Germany
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