1
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Maity P, Pradhan H, Das A, Dalapati M, Samanta D. Improving Fatigue Resistance and Autonomous Switching of pH Responsive Hydrazones by Pulses of a Chemical Fuel. Chemistry 2024; 30:e202400328. [PMID: 38646974 DOI: 10.1002/chem.202400328] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2024] [Revised: 03/26/2024] [Accepted: 04/21/2024] [Indexed: 04/25/2024]
Abstract
The chemically triggered reversible switching of pH-responsive hydrazones involves rotary motion-induced configurational changes, serving as a prototype for constructing an array of molecular machines. Typically, the configurational isomerization of such switches into two distinct forms (E/Z) occurs through the alteration of the pH the medium, achieved by successive additions of acid and base stimuli. However, this process results in intermittent operation due to the concomitant accumulation of salt after each cycle, limiting switching performance to only a few cycles (5-6). In this context, we introduce a novel strategy for the autonomous E/Z isomerization of hydrazones in acetonitrile using pulses of trichloroacetic acid as a chemical fuel. The use of this transient acid enabled reversible switching of hydrazones even after 50 cycles without causing significant fatigue. To test the broad viability of the fuel, a series of ortho/para-substituted hydrazones were synthesized and their switching performance was investigated. The analysis of kinetic data showed a strong dependency of switching operations including the lifetime of transient state, on the electronic properties of substituents. Finally, a distinct color change from yellow to orange due to reversible switching of the para-methoxy substituted hydrazone was employed for the creation of rewritable messages on commercially available paper.
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Affiliation(s)
- Pankaj Maity
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), An OCC of Homi Bhabha National Institute, Bhubaneswar, Jatni, Khurda, Odisha, 752050, India
| | - Harekrushna Pradhan
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), An OCC of Homi Bhabha National Institute, Bhubaneswar, Jatni, Khurda, Odisha, 752050, India
| | - Asesh Das
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), An OCC of Homi Bhabha National Institute, Bhubaneswar, Jatni, Khurda, Odisha, 752050, India
| | - Monotosh Dalapati
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), An OCC of Homi Bhabha National Institute, Bhubaneswar, Jatni, Khurda, Odisha, 752050, India
| | - Dipak Samanta
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), An OCC of Homi Bhabha National Institute, Bhubaneswar, Jatni, Khurda, Odisha, 752050, India
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2
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Borsley S, Leigh DA, Roberts BMW. Molecular Ratchets and Kinetic Asymmetry: Giving Chemistry Direction. Angew Chem Int Ed Engl 2024; 63:e202400495. [PMID: 38568047 DOI: 10.1002/anie.202400495] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2024] [Indexed: 05/03/2024]
Abstract
Over the last two decades ratchet mechanisms have transformed the understanding and design of stochastic molecular systems-biological, chemical and physical-in a move away from the mechanical macroscopic analogies that dominated thinking regarding molecular dynamics in the 1990s and early 2000s (e.g. pistons, springs, etc), to the more scale-relevant concepts that underpin out-of-equilibrium research in the molecular sciences today. Ratcheting has established molecular nanotechnology as a research frontier for energy transduction and metabolism, and has enabled the reverse engineering of biomolecular machinery, delivering insights into how molecules 'walk' and track-based synthesisers operate, how the acceleration of chemical reactions enables energy to be transduced by catalysts (both motor proteins and synthetic catalysts), and how dynamic systems can be driven away from equilibrium through catalysis. The recognition of molecular ratchet mechanisms in biology, and their invention in synthetic systems, is proving significant in areas as diverse as supramolecular chemistry, systems chemistry, dynamic covalent chemistry, DNA nanotechnology, polymer and materials science, molecular biology, heterogeneous catalysis, endergonic synthesis, the origin of life, and many other branches of chemical science. Put simply, ratchet mechanisms give chemistry direction. Kinetic asymmetry, the key feature of ratcheting, is the dynamic counterpart of structural asymmetry (i.e. chirality). Given the ubiquity of ratchet mechanisms in endergonic chemical processes in biology, and their significance for behaviour and function from systems to synthesis, it is surely just as fundamentally important. This Review charts the recognition, invention and development of molecular ratchets, focussing particularly on the role for which they were originally envisaged in chemistry, as design elements for molecular machinery. Different kinetically asymmetric systems are compared, and the consequences of their dynamic behaviour discussed. These archetypal examples demonstrate how chemical systems can be driven inexorably away from equilibrium, rather than relax towards it.
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Affiliation(s)
- Stefan Borsley
- Department of Chemistry, The University of Manchester, Oxford Road, M13 9PL, Manchester, United Kingdom
| | - David A Leigh
- Department of Chemistry, The University of Manchester, Oxford Road, M13 9PL, Manchester, United Kingdom
| | - Benjamin M W Roberts
- Department of Chemistry, The University of Manchester, Oxford Road, M13 9PL, Manchester, United Kingdom
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3
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Nagami S, Kaguchi R, Akahane T, Harabuchi Y, Taniguchi T, Monde K, Maeda S, Ichikawa S, Katsuyama A. Photoinduced dual bond rotation of a nitrogen-containing system realized by chalcogen substitution. Nat Chem 2024; 16:959-969. [PMID: 38418536 DOI: 10.1038/s41557-024-01461-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Accepted: 01/26/2024] [Indexed: 03/01/2024]
Abstract
Photoinduced concerted multiple-bond rotation has been proposed in some biological systems. However, the observation of such phenomena in synthetic systems, in other words, the synthesis of molecules that undergo photoinduced multiple-bond rotation upon photoirradiation, has been a challenge in the photochemistry field. Here we describe a chalcogen-substituted benzamide system that exhibits photoinduced dual bond rotation in heteroatom-containing bonds. Introduction of the chalcogen substituent into a sterically hindered benzamide system provides sufficient kinetic stability and photosensitivity to enable the photoinduced concerted rotation. The presence of two different substituents on the phenyl ring in the thioamide derivative enables the generation of a pair of enantiomers and E/Z isomers. Using these four stereoisomers as indicators of which bonds are rotated, we monitor the photoinduced C-N/C-C concerted bond rotation in the thioamide derivative depending on external stimuli such as temperature and photoirradiation. Theoretical calculations provide insight on the mechanism of this selective photoinduced C-N/C-C concerted rotation.
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Affiliation(s)
- Shotaro Nagami
- Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo, Japan
| | - Rintaro Kaguchi
- Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo, Japan
| | - Taichi Akahane
- Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo, Japan
| | - Yu Harabuchi
- Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University, Sapporo, Japan
- JST, ERATO, Maeda Artificial Intelligence in Chemical Reaction Design and Discovery Project, Sapporo, Japan
- Department of Chemistry, Faculty of Science, Hokkaido University, Sapporo, Japan
| | - Tohru Taniguchi
- Frontier Research Center of Advanced Material and Life Science, Faculty of Advanced Life Science, Hokkaido University, Sapporo, Japan
| | - Kenji Monde
- Frontier Research Center of Advanced Material and Life Science, Faculty of Advanced Life Science, Hokkaido University, Sapporo, Japan
| | - Satoshi Maeda
- Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University, Sapporo, Japan
- JST, ERATO, Maeda Artificial Intelligence in Chemical Reaction Design and Discovery Project, Sapporo, Japan
- Department of Chemistry, Faculty of Science, Hokkaido University, Sapporo, Japan
| | - Satoshi Ichikawa
- Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo, Japan.
- Global Institution for Collaborative Research and Education, Hokkaido University, Sapporo, Japan.
- Center for Research and Education on Drug Discovery, Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo, Japan.
| | - Akira Katsuyama
- Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo, Japan.
- Global Institution for Collaborative Research and Education, Hokkaido University, Sapporo, Japan.
- Center for Research and Education on Drug Discovery, Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo, Japan.
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4
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Shi W, Ma J, Jiang C, Taketsugu T. Advanced theoretical design of light-driven molecular rotary motors: enhancing thermal helix inversion and visible-light activation. Phys Chem Chem Phys 2024; 26:15672-15680. [PMID: 38766713 DOI: 10.1039/d4cp00037d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/22/2024]
Abstract
In this study, we have advanced the field of light-driven molecular rotary motors (LDMRMs) by achieving two pivotal goals: lowering the thermal helix inversion (THI) barrier and extending the absorption wavelength into the visible spectrum. This study involves the structural reengineering of a second-generation visible LDMRM, resulting in the synthesis of a novel class, specifically, 2-((2S)-5-methoxy-2-methyl-2,3-dihydro-1H-cyclopenta[a]naphthalen-1-yl)-3-oxo-2,3-dihydro-1H-dibenzo[e,g]indole-6,9-dicarbonitrile. This redesigned motor stands out with its two photoisomerization stages and two thermal helix inversions, featuring exceptionally low THI barriers (4.00 and 2.05 kcal mol-1 at the OM2/MRCI level for the EM → EP and ZM → ZP processes, respectively). Moreover, it displays absorption wavelengths in the visible light range (482.98 and 465.76 nm for the EP and ZP isomers, respectively, at the TD-PBE0-D3/6-31G(d,p) level), surpassing its predecessors in efficiency, as indicated by the narrow HOMO-LUMO energy gap. Ultrafast photoisomerization kinetics (approximately 0.8-1.6 ps) and high quantum yields (around 0.3-0.6) were observed through trajectory surface hopping simulations. Additionally, the simulated time-resolved fluorescence emission spectrum indicates a significantly reduced "dark state" duration (0.09-0.26 ps) in these newly designed LDMRMs compared to the original ones, marking a substantial leap forward in the design and efficiency of LDMRMs.
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Affiliation(s)
- Weiliang Shi
- Graduate School of Chemical Sciences and Engineering, Hokkaido University, Sapporo 060-0810, Japan
| | - Jianzheng Ma
- Ministry of Education Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Shaanxi Province Key Laboratory of Quantum Information and Quantum Optoelectronic Devices, School of Physics, Xi'an Jiaotong University, Xi'an 710049, China.
| | - Chenwei Jiang
- Ministry of Education Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Shaanxi Province Key Laboratory of Quantum Information and Quantum Optoelectronic Devices, School of Physics, Xi'an Jiaotong University, Xi'an 710049, China.
| | - Tetsuya Taketsugu
- Department of Chemistry, Faculty of Science, Hokkaido University, Sapporo 060-0810, Japan.
- Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University, Sapporo 001-0021, Japan
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5
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Long G, Deng Y, Zhao W, Zhou G, Broer DJ, Feringa BL, Chen J. Photoresponsive Biomimetic Functions by Light-Driven Molecular Motors in Three Dimensionally Printed Liquid Crystal Elastomers. J Am Chem Soc 2024; 146:13894-13902. [PMID: 38728606 PMCID: PMC11117400 DOI: 10.1021/jacs.4c01642] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2024] [Revised: 04/17/2024] [Accepted: 04/18/2024] [Indexed: 05/12/2024]
Abstract
Despite the fascinating developments in design and synthesis of artificial molecular machines operating at the nanoscales, translating molecular motion along multiple length scales and inducing mechanical motion of a three-dimensional macroscopic entity remains an important challenge. The key to addressing this amplification of motion relies on the effective organization of molecular machines in a well-defined environment. By taking advantage of long-range orientational order and hierarchical structures of liquid crystals and unidirectional rotation of light-driven molecular motors, we report here photoresponsive biomimetic functions of liquid crystal elastomers (LCEs) by the repetitive unidirectional rotation of molecular motors using 3D printing. Molecular motors were built in the main chain of liquid crystals oligomers to serve as photoactuators. The oligomers were then used as the ink, and liquid crystal elastomers with different morphologies were printed. The obtained LCEs are able to conduct multiple types of motions including bending, helical coiling, closing of petals, and flipping of wings of a butterfly upon UV illumination, which paves the way for future design of responsive materials with enhanced complex actuating functions.
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Affiliation(s)
- Guiying Long
- SCNU-UG
International Joint Laboratory of Molecular Science and Displays,
National Center for International Research on Green Optoelectronics, South China Normal University, Guangzhou 510006, China
- Stratingh
Institute for Chemistry, University of Groningen, Nijenborgh 4, Groningen 9747 AG, The Netherlands
| | - Yanping Deng
- SCNU-UG
International Joint Laboratory of Molecular Science and Displays,
National Center for International Research on Green Optoelectronics, South China Normal University, Guangzhou 510006, China
| | - Wei Zhao
- SCNU-TUE
Joint lab of Device Integrated Responsive Materials (DIRM), Guangdong
Provincial Key Laboratory of Optical Information Materials and Technology
& Institute of Electronic Paper Displays, South China Academy
of Advanced Optoelectronics, South China
Normal University, Guangzhou 510006, China
| | - Guofu Zhou
- SCNU-UG
International Joint Laboratory of Molecular Science and Displays,
National Center for International Research on Green Optoelectronics, South China Normal University, Guangzhou 510006, China
- SCNU-TUE
Joint lab of Device Integrated Responsive Materials (DIRM), Guangdong
Provincial Key Laboratory of Optical Information Materials and Technology
& Institute of Electronic Paper Displays, South China Academy
of Advanced Optoelectronics, South China
Normal University, Guangzhou 510006, China
| | - Dirk J. Broer
- SCNU-TUE
Joint lab of Device Integrated Responsive Materials (DIRM), Guangdong
Provincial Key Laboratory of Optical Information Materials and Technology
& Institute of Electronic Paper Displays, South China Academy
of Advanced Optoelectronics, South China
Normal University, Guangzhou 510006, China
- Stimuli-responsive
Functional Materials and Devices, Department of Chemical Engineering
and Chemistry, Eindhoven University of Technology, Eindhoven 5600 MB, The Netherlands
| | - Ben L. Feringa
- SCNU-UG
International Joint Laboratory of Molecular Science and Displays,
National Center for International Research on Green Optoelectronics, South China Normal University, Guangzhou 510006, China
- Stratingh
Institute for Chemistry, University of Groningen, Nijenborgh 4, Groningen 9747 AG, The Netherlands
| | - Jiawen Chen
- SCNU-UG
International Joint Laboratory of Molecular Science and Displays,
National Center for International Research on Green Optoelectronics, South China Normal University, Guangzhou 510006, China
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6
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Zitzmann M, Fröhling M, Dube H. Gain of Function Recyclable Photoswitches: Reversible Simultaneous Substitution and Photochromism Generation. Angew Chem Int Ed Engl 2024; 63:e202318767. [PMID: 38315498 DOI: 10.1002/anie.202318767] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Revised: 01/20/2024] [Accepted: 01/23/2024] [Indexed: 02/07/2024]
Abstract
The use of molecular photoswitches has spread to virtually every field of pure and applied chemistry because of the extraordinary level of control they provide over the behavior of matter at the smallest scales. Photoswitches possess at least two different states with distinct structures and/or electronics and further functionalization of their core chromophore structures is needed to tailor them for a specific application. In this work we present a different concept for the generation and use of molecular photoswitches. It allows not only simultaneous establishment of photochromism and functionalization, but also full recyclability of a non-photochromic precursor material. Using a high-yielding and reversible ammonium salt formation, a functional group is introduced into a symmetric precursor while at the same time a strong electronic push-pull character is established in the structure. The resulting desymmetrization leads to efficient photoswitching capacity and the functional group can be fully removed subsequently by a simple heating step recovering the precursor for another functionalization round. We finally demonstrate feasibility of this concept over two consecutive closed loop functionalization/photoswitching/recovery steps. This concept offers great potential in any chemical research and application driven area but especially for the creation of responsive reprogrammable materials, no-background photoswitch labeling, and sustainable chemistry.
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Affiliation(s)
- Max Zitzmann
- Friedrich-Alexander-Universität Erlangen-Nürnberg, Department of Chemistry and Pharmacy, Nikolaus-Fiebiger-Str. 10, 91058, Erlangen, Germany
| | - Matthias Fröhling
- Friedrich-Alexander-Universität Erlangen-Nürnberg, Department of Chemistry and Pharmacy, Nikolaus-Fiebiger-Str. 10, 91058, Erlangen, Germany
| | - Henry Dube
- Friedrich-Alexander-Universität Erlangen-Nürnberg, Department of Chemistry and Pharmacy, Nikolaus-Fiebiger-Str. 10, 91058, Erlangen, Germany
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7
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Gisbert Y, Fellert M, Stindt CN, Gerstner A, Feringa BL. Molecular Motors' Magic Methyl and Its Pivotal Influence on Rotation. J Am Chem Soc 2024; 146:12609-12619. [PMID: 38656891 PMCID: PMC11082891 DOI: 10.1021/jacs.4c01628] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2024] [Revised: 03/28/2024] [Accepted: 03/28/2024] [Indexed: 04/26/2024]
Abstract
Molecular motors have found a wide range of applications, powering a transition from molecules to dynamic molecular systems for which their motion must be precisely tuned. To achieve this adjustment, strategies involving laborious changes in their design are often used. Herein, we show that control over a single methyl group allows a drastic change in rotational properties. In this regard, we present the straightforward asymmetric synthesis of β-methylated first-generation overcrowded-alkene-based molecular motors. Both enantiomers of the new motors were prepared in good yields and high enantiopurities, and these motors were thoroughly studied by variable-temperature nuclear magnetic resonance (VT-NMR), ultraviolet-visible (UV-vis), and circular dichroism (CD) spectroscopy, showing a crucial influence of the methylation pattern on the rotational behavior of the motors. Starting from a common chiral precursor, we demonstrate that subsequent methylation can drastically reduce the speed of the motor and reverse the direction of the rotation. We show for the first time that complete unidirectionality can be achieved even when the energy difference between the stable and metastable states is small, resulting in the coexistence of both states under ambient conditions without hampering the energy ratcheting process. This discovery opens the way for the design of more advanced first-generation motors.
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Affiliation(s)
| | | | - Charlotte N. Stindt
- Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747
AG Groningen, The
Netherlands
| | - Alexander Gerstner
- Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747
AG Groningen, The
Netherlands
| | - Ben L. Feringa
- Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747
AG Groningen, The
Netherlands
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8
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Roy P, Sardjan AS, Browne WR, Feringa BL, Meech SR. Excited State Dynamics in Unidirectional Photochemical Molecular Motors. J Am Chem Soc 2024; 146:12255-12270. [PMID: 38656968 PMCID: PMC11082934 DOI: 10.1021/jacs.4c01019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2024] [Revised: 04/05/2024] [Accepted: 04/08/2024] [Indexed: 04/26/2024]
Abstract
Unidirectional photochemically driven molecular motors (PMMs) convert the energy of absorbed light into continuous rotational motion. As such they are key components in the design of molecular machines. The prototypical and most widely employed class of PMMs is the overcrowded alkenes, where rotational motion is driven by successive photoisomerization and thermal helix inversion steps. The efficiency of such PMMs depends upon the speed of rotation, determined by the rate of ground state thermal helix inversion, and the quantum yield of photoisomerization, which is dependent on the excited state energy landscape. The former has been optimized by synthetic modification across three generations of overcrowded alkene PMMs. These improvements have often been at the expense of photoisomerization yield, where there remains room for improvement. In this perspective we review the application of ultrafast spectroscopy to characterize the excited state dynamics in PMMs. These measurements lead to a general mechanism for all generations of PMMs, involving subpicosecond decay of a Franck-Condon excited state to populate a dark excited state which decays within picoseconds via conical intersections with the electronic ground state. The model is discussed in the context of excited state dynamics calculations. Studies of PMM photochemical dynamics as a function of solvent suggest exploitation of intramolecular charge transfer and solvent polarity as a route to controlling photoisomerization yield. A test of these ideas for a first generation motor reveals a high degree of solvent control over isomerization yield. These results suggest a pathway to fine control over the performance of future PMMs.
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Affiliation(s)
- Palas Roy
- School
of Chemistry, University of East Anglia, Norwich NR4 7TJ, U.K.
- School
of Basic Sciences, Indian Institute of Technology
Bhubaneswar, Bhubaneswar, Odisha 752050, India
| | - Andy S. Sardjan
- Molecular
Inorganic Chemistry, Stratingh Institute for Chemistry, University of Groningen, 9747AG Groningen, The Netherlands
| | - Wesley R. Browne
- Molecular
Inorganic Chemistry, Stratingh Institute for Chemistry, University of Groningen, 9747AG Groningen, The Netherlands
| | - Ben L. Feringa
- Centre
for Systems Chemistry, Stratingh Institute for Chemistry, University of Groningen, 9747AG Groningen, The Netherlands
| | - Stephen R. Meech
- School
of Chemistry, University of East Anglia, Norwich NR4 7TJ, U.K.
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9
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Xu F, Sheng J, Stindt CN, Crespi S, Danowski W, Hilbers MF, Buma WJ, Feringa BL. All-visible-light-driven stiff-stilbene photoswitches. Chem Sci 2024; 15:6763-6769. [PMID: 38725493 PMCID: PMC11077541 DOI: 10.1039/d4sc00983e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2024] [Accepted: 03/27/2024] [Indexed: 05/12/2024] Open
Abstract
Molecular photoswitches are potent tools to construct dynamic functional systems and responsive materials that can be controlled in a non-invasive manner. As P-type photoswitches, stiff-stilbenes attract increasing interest, owing to their superiority in quantum yield, significant geometric differences between isomers, excellent thermostability and robust switching behavior. Nevertheless, the UV-light-triggered photoisomerization of stiff-stilbenes has been a main drawback for decades as UV light is potentially harmful and has low penetration depth. Here, we provided a series of para-formylated stiff-stilbenes by Rieche ortho-formylation to achieve all-visible-light-responsiveness. Additional phenolic groups provide access to late-stage chemical modification facilitating design of molecules responsive to visible light. Remarkably, the photoisomerization of aldehyde-appended stiff-stilbenes could be fully manipulated using visible light, accompanied by a high photostationary state (PSS) distribution. These features render them excellent candidates for future visible-light-controllable smart materials and dynamic systems.
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Affiliation(s)
- Fan Xu
- Center for System Chemistry, Stratingh Institute for Chemistry, University of Groningen Nijenborgh 4 9747 AG Groningen The Netherlands
| | - Jinyu Sheng
- Center for System Chemistry, Stratingh Institute for Chemistry, University of Groningen Nijenborgh 4 9747 AG Groningen The Netherlands
| | - Charlotte N Stindt
- Center for System Chemistry, Stratingh Institute for Chemistry, University of Groningen Nijenborgh 4 9747 AG Groningen The Netherlands
| | - Stefano Crespi
- Department of Chemistry-Ångström Laboratory, Uppsala University Box 523 Uppsala Sweden
| | - Wojciech Danowski
- University of Strasbourg CNRS ISIS UMR 7006, 8 Allée Gaspard Monge Strasbourg F-67000 France
- Faculty of Chemistry, University of Warsaw Pasteura 1 02-093 Warsaw Poland
| | - Michiel F Hilbers
- Van't Hoff Institute for Molecular Sciences, University of Amsterdam Science Park 904, 1098 XH Amsterdam The Netherlands
| | - Wybren Jan Buma
- Van't Hoff Institute for Molecular Sciences, University of Amsterdam Science Park 904, 1098 XH Amsterdam The Netherlands
- Institute for Molecules and Materials, FELIX Laboratory, Radboud University Toernooiveld 7c, 6525 ED Nijmegen The Netherlands
| | - Ben L Feringa
- Center for System Chemistry, Stratingh Institute for Chemistry, University of Groningen Nijenborgh 4 9747 AG Groningen The Netherlands
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10
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Sheng J, Danowski W, Sardjan AS, Hou J, Crespi S, Ryabchun A, Domínguez MP, Jan Buma W, Browne WR, Feringa BL. Formylation boosts the performance of light-driven overcrowded alkene-derived rotary molecular motors. Nat Chem 2024:10.1038/s41557-024-01521-0. [PMID: 38671301 DOI: 10.1038/s41557-024-01521-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Accepted: 03/26/2024] [Indexed: 04/28/2024]
Abstract
Artificial molecular motors and machines constitute a critical element in the transition from individual molecular motion to the creation of collective dynamic molecular systems and responsive materials. The design of artificial light-driven molecular motors operating with high efficiency and selectivity constitutes an ongoing fundamental challenge. Here we present a highly versatile synthetic approach based on Rieche formylation that boosts the quantum yield of the forward photoisomerization reaction while reaching near-perfect selectivity in the steps involved in the unidirectional rotary cycle and drastically reducing competing photoreactions. This motor is readily accessible in its enantiopure form and operates with nearly quantitative photoconversions. It can easily be functionalized further and outperforms its direct predecessor as a reconfigurable chiral dopant in cholesteric liquid crystal materials.
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Affiliation(s)
- Jinyu Sheng
- Stratingh Institute for Chemistry, University of Groningen, Groningen, The Netherlands
| | - Wojciech Danowski
- Stratingh Institute for Chemistry, University of Groningen, Groningen, The Netherlands
- Institute of Supramolecular Science and Engineering (ISIS), Université de Strasbourg, CNRS, Strasbourg, France
- Faculty of Chemistry, University of Warsaw, Warsaw, Poland
| | - Andy S Sardjan
- Stratingh Institute for Chemistry, University of Groningen, Groningen, The Netherlands
| | - Jiaxin Hou
- Stratingh Institute for Chemistry, University of Groningen, Groningen, The Netherlands
| | - Stefano Crespi
- Stratingh Institute for Chemistry, University of Groningen, Groningen, The Netherlands
- Department of Chemistry, Ångström Laboratory, Uppsala University, Uppsala, Sweden
| | - Alexander Ryabchun
- Stratingh Institute for Chemistry, University of Groningen, Groningen, The Netherlands
| | | | - Wybren Jan Buma
- Van 't Hoff Institute for Molecular Sciences, University of Amsterdam, Amsterdam, The Netherlands
- Institute for Molecules and Materials, FELIX Laboratory, Radboud University, Nijmegen, The Netherlands
| | - Wesley R Browne
- Stratingh Institute for Chemistry, University of Groningen, Groningen, The Netherlands
| | - Ben L Feringa
- Stratingh Institute for Chemistry, University of Groningen, Groningen, The Netherlands.
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11
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Lu H, Ye H, You L. Photoswitchable Cascades for Allosteric and Bidirectional Control over Covalent Bonds and Assemblies. J Am Chem Soc 2024. [PMID: 38620077 DOI: 10.1021/jacs.4c01240] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/17/2024]
Abstract
Studies of complex systems and emerging properties to mimic biosystems are at the forefront of chemical research. Dynamic multistep cascades, especially those exhibiting allosteric regulation, are challenging. Herein, we demonstrate a versatile platform of photoswitchable covalent cascades toward remote and bidirectional control of reversible covalent bonds and ensuing assemblies. The relay of a photochromic switch, keto-enol equilibrium, and ring-chain equilibrium allows light-mediated reversible allosteric structural changes. The accompanying distinct reactivity further enables photoswitchable dynamic covalent bonding and release of substrates bidirectionally through alternating two wavelengths of light, essentially realizing light-mediated signaling cycles. The downfall of energy by covalent bond formation/scission upon photochemical reactions offers the driving force for the controlled direction of the cascade. To show the molecular diversity, photoswitchable on-demand assembly/disassembly of covalent polymers, including structurally reconfigurable polymers, was realized. This work achieves photoswitchable allosteric regulation of covalent architectures within dynamic multistep cascades, which has rarely been reported before. The results resemble allosteric control within biological signaling networks and should set the stage for many endeavors, such as dynamic assemblies, molecular motors, responsive polymers, and intelligent materials.
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Affiliation(s)
- Hanwei Lu
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Hebo Ye
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
| | - Lei You
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
- University of Chinese Academy of Sciences, Beijing 100049, China
- Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China, Fuzhou 350108, China
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12
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Yao X, Vishnu JA, Lupfer C, Hoenders D, Skarsetz O, Chen W, Dattler D, Perrot A, Wang WZ, Gao C, Giuseppone N, Schmid F, Walther A. Scalable Approach to Molecular Motor-Polymer Conjugates for Light-Driven Artificial Muscles. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024:e2403514. [PMID: 38613525 DOI: 10.1002/adma.202403514] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2024] [Revised: 04/09/2024] [Indexed: 04/15/2024]
Abstract
The integration of molecular machines and motors into materials represents a promising avenue for creating dynamic and functional molecular systems, with potential applications in soft robotics or reconfigurable biomaterials. However, the development of truly scalable and controllable approaches for incorporating molecular motors into polymeric matrices has remained a challenge. Here, it is shown that light-driven molecular motors with sensitive photo-isomerizable double bonds can be converted into initiators for Cu-mediated controlled/living radical polymerization enabling the synthesis of star-shaped motor-polymer conjugates. This approach enables scalability, precise control over the molecular structure, block copolymer structures, and high-end group fidelity. Moreover, it is demonstrated that these materials can be crosslinked to form gels with quasi-ideal network topology, exhibiting light-triggered contraction. The influence of arm length and polymer structure is investigated, and the first molecular dynamics simulation framework to gain deeper insights into the contraction processes is developed. Leveraging this scalable methodology, the creation of bilayer soft robotic devices and cargo-lifting artificial muscles is showcased, highlighting the versatility and potential applications of this advanced polymer chemistry approach. It is anticipated that the integrated experimental and simulation framework will accelerate scalable approaches for active polymer materials based on molecular machines, opening up new horizons in materials science and bioscience.
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Affiliation(s)
- Xuyang Yao
- Life-Like Materials and Systems, Department of Chemistry, University of Mainz, Duesbergweg 10-14, 55128, Mainz, Germany
- SAMS Research Group, Université de Strasbourg, Institut Charles Sadron - CNRS, 23 rue du Loess, BP 84047, 67034, Strasbourg, Cedex 2, France
- Freiburg Institute for Advanced Studies, Freiburg, Germany
- Strasbourg Institute for Advanced Studies, Strasbourg, France
| | - Jude Ann Vishnu
- KOMET 1, Institute of Physics, Johannes Gutenberg University of Mainz, D 55099, Mainz, Germany
| | - Claudius Lupfer
- Life-Like Materials and Systems, Department of Chemistry, University of Mainz, Duesbergweg 10-14, 55128, Mainz, Germany
| | - Daniel Hoenders
- Life-Like Materials and Systems, Department of Chemistry, University of Mainz, Duesbergweg 10-14, 55128, Mainz, Germany
| | - Oliver Skarsetz
- Life-Like Materials and Systems, Department of Chemistry, University of Mainz, Duesbergweg 10-14, 55128, Mainz, Germany
| | - Weixiang Chen
- Life-Like Materials and Systems, Department of Chemistry, University of Mainz, Duesbergweg 10-14, 55128, Mainz, Germany
| | - Damien Dattler
- SAMS Research Group, Université de Strasbourg, Institut Charles Sadron - CNRS, 23 rue du Loess, BP 84047, 67034, Strasbourg, Cedex 2, France
| | - Alexis Perrot
- SAMS Research Group, Université de Strasbourg, Institut Charles Sadron - CNRS, 23 rue du Loess, BP 84047, 67034, Strasbourg, Cedex 2, France
| | - Wen-Zhi Wang
- SAMS Research Group, Université de Strasbourg, Institut Charles Sadron - CNRS, 23 rue du Loess, BP 84047, 67034, Strasbourg, Cedex 2, France
| | - Chuan Gao
- SAMS Research Group, Université de Strasbourg, Institut Charles Sadron - CNRS, 23 rue du Loess, BP 84047, 67034, Strasbourg, Cedex 2, France
| | - Nicolas Giuseppone
- SAMS Research Group, Université de Strasbourg, Institut Charles Sadron - CNRS, 23 rue du Loess, BP 84047, 67034, Strasbourg, Cedex 2, France
- Freiburg Institute for Advanced Studies, Freiburg, Germany
- Strasbourg Institute for Advanced Studies, Strasbourg, France
- Institut Universitaire de France (IUF), Paris, 75005, France
| | - Friederike Schmid
- KOMET 1, Institute of Physics, Johannes Gutenberg University of Mainz, D 55099, Mainz, Germany
| | - Andreas Walther
- Life-Like Materials and Systems, Department of Chemistry, University of Mainz, Duesbergweg 10-14, 55128, Mainz, Germany
- Freiburg Institute for Advanced Studies, Freiburg, Germany
- Strasbourg Institute for Advanced Studies, Strasbourg, France
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13
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Marandi G, Hassanzadeh A. The rapid synthesis of 1,10-phenanthroline-5,6-diimine (Phendiimine) and its fascinating photo-stimulated behavior. Sci Rep 2024; 14:8464. [PMID: 38605215 PMCID: PMC11009400 DOI: 10.1038/s41598-024-59272-4] [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: 12/31/2023] [Accepted: 04/09/2024] [Indexed: 04/13/2024] Open
Abstract
Here, for the first time, we report synthesis of 1,10-phenanthroline-5,6-diimine (Phendiimine) based on an acid catalysed SN2 reaction of 1,10-phenanthroline-5,6-dione and 2-picolylamine in EtOH as a solvent. The synthesized Phendiimine molecule showed excellent photo-sensitivity against visible light, together with photoluminescence in both water and ethanol and also, it showed electrochemical activity with Fe electrode in ethanol and H2SO4 solution. Tauc plot also showed Phendiimine is a direct band-gap semiconductor. The hot-point probe test also showed that it is a n-type semiconductor. The UV-vis. absorption maximum shift in two solvents (water and ethanol) demonstrates the solvatochromism behavior of the molecule. The practical significance of this work and its guiding implication for future related research can be outlined as follows. Based on the results obtained, it appears that the Phendiimine molecule could revolutionize the medical field, potentially in the design of artificial eyes, increasing the yield of photovoltaic cells through enhanced heat transfer, improving computers and industrial photo-cooling systems, serving as photo-controller in place of piezoelectric devices, functioning as electronic opt couplers, controlling remote lasers, changing convection in photothermal heaters, designing miniaturized real photo-stimulated motors, creating photo or thermal switches through spin crossover complexes, developing electronic light-dependent resistance (LDR) devices, constructing X-ray and gamma-ray detectors, designing intelligent clothing, creating photo dynamic tumour therapy (PDT) complexes, singlet fission materials in solar cells and more.
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Affiliation(s)
- Ghasem Marandi
- Department of Organic Chemistry, Faculty of Chemistry, Urmia University, Urmia, Iran.
| | - Ali Hassanzadeh
- Department of Physical Chemistry, Faculty of Chemistry, Urmia University, Urmia, Iran
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14
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van Ewijk C, Xu F, Maity S, Sheng J, Stuart MCA, Feringa BL, Roos WH. Light-Triggered Disassembly of Molecular Motor-based Supramolecular Polymers Revealed by High-Speed AFM. Angew Chem Int Ed Engl 2024; 63:e202319387. [PMID: 38372499 DOI: 10.1002/anie.202319387] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2023] [Revised: 02/02/2024] [Accepted: 02/14/2024] [Indexed: 02/20/2024]
Abstract
Photoresponsive supramolecular polymers have a major potential for applications in responsive materials that are externally triggered by light with spatio-temporal control of their polymerisation state. While changes in macroscopic properties revealed the adaptive nature of these materials, it remains challenging to capture the dynamic depolymerisation process at the molecular level, which requires fast observation techniques combined with in situ irradiation. By implementing in situ UV illumination into a High-Speed Atomic Force Microscope (HS-AFM) setup, we have been able to capture the disassembly of a light-driven molecular motor-based supramolecular polymer. The real-time visualisation of the light-triggered disassembly process not only reveals cooperative depolymerisation, it also shows that this process continues after illumination is halted. Combining the data with cryo-electron microscopy and spectroscopy approaches, we obtain a molecular-level description of the motor-based polymer dynamics reminiscent of actin chain-end depolymerisation. Our detailed understanding of supramolecular depolymerisation will drive the development of future responsive polymer systems.
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Affiliation(s)
- Chris van Ewijk
- Molecular Biophysics, Zernike Institute for Advanced Materials Rijksuniversiteit Groningen, Nijenborgh 4, 9747 AG, Groningen, The, Netherlands
| | - Fan Xu
- Synthetic Organic Chemistry, Stratingh Institute for Chemistry Rijksuniversiteit Groningen, Nijenborgh 4, 9747 AG, Groningen, The, Netherlands
| | - Sourav Maity
- Molecular Biophysics, Zernike Institute for Advanced Materials Rijksuniversiteit Groningen, Nijenborgh 4, 9747 AG, Groningen, The, Netherlands
| | - Jinyu Sheng
- Synthetic Organic Chemistry, Stratingh Institute for Chemistry Rijksuniversiteit Groningen, Nijenborgh 4, 9747 AG, Groningen, The, Netherlands
| | - Marc C A Stuart
- Synthetic Organic Chemistry, Stratingh Institute for Chemistry Rijksuniversiteit Groningen, Nijenborgh 4, 9747 AG, Groningen, The, Netherlands
| | - Ben L Feringa
- Synthetic Organic Chemistry, Stratingh Institute for Chemistry Rijksuniversiteit Groningen, Nijenborgh 4, 9747 AG, Groningen, The, Netherlands
| | - Wouter H Roos
- Molecular Biophysics, Zernike Institute for Advanced Materials Rijksuniversiteit Groningen, Nijenborgh 4, 9747 AG, Groningen, The, Netherlands
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15
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Qutbuddin Y, Guinart A, Gavrilović S, Al Nahas K, Feringa BL, Schwille P. Light-Activated Synthetic Rotary Motors in Lipid Membranes Induce Shape Changes Through Membrane Expansion. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2311176. [PMID: 38215457 DOI: 10.1002/adma.202311176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Revised: 12/16/2023] [Indexed: 01/14/2024]
Abstract
Membranes are the key structures to separate and spatially organize cellular systems. Their rich dynamics and transformations during the cell cycle are orchestrated by specific membrane-targeted molecular machineries, many of which operate through energy dissipation. Likewise, man-made light-activated molecular rotary motors have previously shown drastic effects on cellular systems, but their physical roles on and within lipid membranes remain largely unexplored. Here, the impact of rotary motors on well-defined biological membranes is systematically investigated. Notably, dramatic mechanical transformations are observed in these systems upon motor irradiation, indicative of motor-induced membrane expansion. The influence of several factors on this phenomenon is systematically explored, such as motor concentration and membrane composition., Membrane fluidity is found to play a crucial role in motor-induced deformations, while only minor contributions from local heating and singlet oxygen generation are observed. Most remarkably, the membrane area expansion under the influence of the motors continues as long as irradiation is maintained, and the system stays out-of-equilibrium. Overall, this research contributes to a comprehensive understanding of molecular motors interacting with biological membranes, elucidating the multifaceted factors that govern membrane responses and shape transitions in the presence of these remarkable molecular machines, thereby supporting their future applications in chemical biology.
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Affiliation(s)
- Yusuf Qutbuddin
- Cellular and Molecular Biophysics, Max Planck Institute of Biochemistry, 82152, Martinsried, Germany
| | - Ainoa Guinart
- Stratingh Institute for Chemistry, University of Groningen, Groningen, 9747 AG, The Netherlands
| | - Svetozar Gavrilović
- Cellular and Molecular Biophysics, Max Planck Institute of Biochemistry, 82152, Martinsried, Germany
| | - Kareem Al Nahas
- Cellular and Molecular Biophysics, Max Planck Institute of Biochemistry, 82152, Martinsried, Germany
| | - Ben L Feringa
- Stratingh Institute for Chemistry, University of Groningen, Groningen, 9747 AG, The Netherlands
| | - Petra Schwille
- Cellular and Molecular Biophysics, Max Planck Institute of Biochemistry, 82152, Martinsried, Germany
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16
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Wu J, Kreimendahl L, Tao S, Anhalt O, Greenfield JL. Photoswitchable imines: aryliminopyrazoles quantitatively convert to long-lived Z-isomers with visible light. Chem Sci 2024; 15:3872-3878. [PMID: 38487238 PMCID: PMC10935669 DOI: 10.1039/d3sc05841g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Accepted: 02/14/2024] [Indexed: 03/17/2024] Open
Abstract
Arylimines offer promise in dynamic-covalent materials due to their recyclability and ease of synthesis. However, their light-triggered E/Z isomerism has received little attention. This is attributed to challenges that include low thermal stability of their metastable state (<60 s at 20 °C), incomplete photoswitching (<50% to the metastable state), and the need for UV light (≤365 nm). We overcome these limitations with a novel class of imine photoswitch, the aryliminopyrazoles (AIPs). These AIPs can be switched using visible light (470 nm), attain photostationary states with over 95% of the Z-isomer, exhibit great resistance to fatigue, and have thermal half-lives up to 19.2 hours at room temperature. Additionally, they display T-type and negative photochromism under visible light irradiation-a useful property. The photochromic properties, quantitative assembly and accessibility of precursors set these photoswitches apart from their azo-based analogues. These findings open avenues for next-generation photoresponsive dynamic-covalent materials driven solely by these new photochromic linkages and further exploration of photocontrolled dynamic combinatorial chemistry.
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Affiliation(s)
- Jiarong Wu
- Institut für Organische Chemie, Universität Würzburg 97074 Würzburg Germany
- Center for Nanosystems Chemistry (CNC), Universität Würzburg 97074 Würzburg Germany
| | - Lasse Kreimendahl
- Institut für Organische Chemie, Universität Würzburg 97074 Würzburg Germany
| | - Suyuan Tao
- Institut für Organische Chemie, Universität Würzburg 97074 Würzburg Germany
- Center for Nanosystems Chemistry (CNC), Universität Würzburg 97074 Würzburg Germany
| | - Olga Anhalt
- Center for Nanosystems Chemistry (CNC), Universität Würzburg 97074 Würzburg Germany
| | - Jake L Greenfield
- Institut für Organische Chemie, Universität Würzburg 97074 Würzburg Germany
- Center for Nanosystems Chemistry (CNC), Universität Würzburg 97074 Würzburg Germany
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17
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Deng Y, Long G, Zhang Y, Zhao W, Zhou G, Feringa BL, Chen J. Photo-responsive functional materials based on light-driven molecular motors. LIGHT, SCIENCE & APPLICATIONS 2024; 13:63. [PMID: 38429259 PMCID: PMC10907585 DOI: 10.1038/s41377-024-01391-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Revised: 01/16/2024] [Accepted: 01/18/2024] [Indexed: 03/03/2024]
Abstract
In the past two decades, the research and development of light-triggered molecular machines have mainly focused on developing molecular devices at the nanoscale. A key scientific issue in the field is how to amplify the controlled motion of molecules at the nanoscale along multiple length scales, such as the mesoscopic or the macroscopic scale, or in a more practical perspective, how to convert molecular motion into changes of properties of a macroscopic material. Light-driven molecular motors are able to perform repetitive unidirectional rotation upon irradiation, which offers unique opportunities for responsive macroscopic systems. With several reviews that focus on the design, synthesis and operation of the motors at the nanoscale, photo-responsive macroscopic materials based on light-driven molecular motors have not been comprehensively summarized. In the present review, we first discuss the strategy of confining absolute molecular rotation into relative rotation by grafting motors on surfaces. Secondly, examples of self-assemble motors in supramolecular polymers with high internal order are illustrated. Moreover, we will focus on building of motors in a covalently linked system such as polymeric gels and polymeric liquid crystals to generate complex responsive functions. Finally, a perspective toward future developments and opportunities is given. This review helps us getting a more and more clear picture and understanding on how complex movement can be programmed in light-responsive systems and how man-made adaptive materials can be invented, which can serve as an important guideline for further design of complex and advanced responsive materials.
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Affiliation(s)
- Yanping Deng
- SCNU-UG International Joint Laboratory of Molecular Science and Displays, National Center for International Research on Green Optoelectronics, South China Normal University, Guangzhou, 510006, China
| | - Guiying Long
- SCNU-UG International Joint Laboratory of Molecular Science and Displays, National Center for International Research on Green Optoelectronics, South China Normal University, Guangzhou, 510006, China
- Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747AG, Groningen, The Netherlands
| | - Yang Zhang
- SCNU-UG International Joint Laboratory of Molecular Science and Displays, National Center for International Research on Green Optoelectronics, South China Normal University, Guangzhou, 510006, China
| | - Wei Zhao
- SCNU-UG International Joint Laboratory of Molecular Science and Displays, National Center for International Research on Green Optoelectronics, South China Normal University, Guangzhou, 510006, China
| | - Guofu Zhou
- SCNU-UG International Joint Laboratory of Molecular Science and Displays, National Center for International Research on Green Optoelectronics, South China Normal University, Guangzhou, 510006, China
| | - Ben L Feringa
- SCNU-UG International Joint Laboratory of Molecular Science and Displays, National Center for International Research on Green Optoelectronics, South China Normal University, Guangzhou, 510006, China.
- Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747AG, Groningen, The Netherlands.
| | - Jiawen Chen
- SCNU-UG International Joint Laboratory of Molecular Science and Displays, National Center for International Research on Green Optoelectronics, South China Normal University, Guangzhou, 510006, China.
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18
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van Beek CF, Feringa BL. Coupled Rotary Motion in Molecular Motors. J Am Chem Soc 2024; 146:5634-5642. [PMID: 38350104 PMCID: PMC10910502 DOI: 10.1021/jacs.3c14430] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Revised: 01/19/2024] [Accepted: 01/22/2024] [Indexed: 02/15/2024]
Abstract
Biological molecular machines play a pivotal role in sustaining life by producing a controlled and directional motion. Artificial molecular machines aim to mimic this motion, to exploit and tune the nanoscale produced motion to power dynamic molecular systems. The precise control, transfer, and amplification of the molecular-level motion is crucial to harness the potential of synthetic molecular motors. It is intriguing to establish how directional motor rotation can be utilized to drive secondary motions in other subunits of a multicomponent molecular machine. The challenge to design sophisticated synthetic machines involving multiple motorized elements presents fascinating opportunities for achieving unprecedented functions, but these remain almost unexplored due to their extremely intricate behavior. Here we show intrinsic coupled rotary motion in light-driven overcrowded-alkene based molecular motors. Thus far, molecular motors with two rotors have been understood to undergo independent rotation of each subunit. The new bridged-isoindigo motor design revealed an additional dimension to the motor's unidirectional operation mechanism where communication between the rotors occurs. An unprecedented double metastable state intermediate bridges the rotation cycles of the two rotor subunits. Our findings demonstrate how neighboring motorized subunits can affect each other and thereby drastically change the motor's functioning. Controlling the embedded entanglement of active intramolecular components sets the stage for more advanced artificial molecular machines.
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Affiliation(s)
- Carlijn
L. F. van Beek
- Stratingh Institute for Chemistry,
Faculty of Science and Engineering, University
of Groningen, Nijenborgh 4, Groningen, 9747 AG, Netherlands
| | - Ben L. Feringa
- Stratingh Institute for Chemistry,
Faculty of Science and Engineering, University
of Groningen, Nijenborgh 4, Groningen, 9747 AG, Netherlands
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19
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Astumian RD. Kinetic Asymmetry and Directionality of Nonequilibrium Molecular Systems. Angew Chem Int Ed Engl 2024; 63:e202306569. [PMID: 38236163 DOI: 10.1002/anie.202306569] [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: 05/10/2023] [Indexed: 01/19/2024]
Abstract
Scientists have long been fascinated by the biomolecular machines in living systems that process energy and information to sustain life. The first synthetic molecular rotor capable of performing repeated 360° rotations due to a combination of photo- and thermally activated processes was reported in 1999. The progress in designing different molecular machines in the intervening years has been remarkable, with several outstanding examples appearing in the last few years. Despite the synthetic accomplishments, there remains confusion regarding the fundamental design principles by which the motions of molecules can be controlled, with significant intellectual tension between mechanical and chemical ways of thinking about and describing molecular machines. A thermodynamically consistent analysis of the kinetics of several molecular rotors and pumps shows that while light driven rotors operate by a power-stroke mechanism, kinetic asymmetry-the relative heights of energy barriers-is the sole determinant of the directionality of catalysis driven machines. Power-strokes-the relative depths of energy wells-play no role whatsoever in determining the sign of the directionality. These results, elaborated using trajectory thermodynamics and the nonequilibrium pump equality, show that kinetic asymmetry governs the response of many non-equilibrium chemical phenomena.
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Affiliation(s)
- Raymond Dean Astumian
- Department of Physics and Astronomy, The University of Maine, 5709 Bennett Hall, Orono, ME-04469, USA
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20
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Xu W, Tao Y, Xu H, Wen J. Theoretical trends in the dynamics simulations of molecular machines across multiple scales. Phys Chem Chem Phys 2024; 26:4828-4839. [PMID: 38235540 DOI: 10.1039/d3cp05201j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2024]
Abstract
Over the past few decades, molecular machines have been extensively studied, since they are composed of single molecules for functional materials capable of responding to external stimuli, enabling motion at scales ranging from the microscopic to the macroscopic level within molecular aggregates. This advancement holds the potential to efficiently transform external resources into mechanical movement, achieved through precise control of conformational changes in stimuli-responsive materials. However, the underlying mechanism that links microscopic and macroscopic motions remains unclear, demanding computational development associated with simulating the construction of molecular machines from single molecules. This bottleneck has impeded the design of more efficient functional materials. Advancements in theoretical simulations have successfully been developed in various computational models to unveil the operational mechanisms of stimulus-responsive molecular machines, which could help us reduce the costs in experimental trial-and-error procedures. It opens doors to the computer-aided design of innovative functional materials. In this perspective, we have reviewed theoretical approaches employed in simulating dynamic processes involving conformational changes in molecular machines, spanning different scales and environmental conditions. In addition, we have highlighted current challenges and anticipated future trends in the collective control of aggregates within molecular machines. Our goal is to provide a comprehensive overview of recent theoretical advancements in the field of molecular machines, offering valuable insights for the design of novel smart materials.
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Affiliation(s)
- Weijia Xu
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China.
| | - Yuanda Tao
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China.
| | - Haoyang Xu
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China.
| | - Jin Wen
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China.
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21
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Stähler C, Reynaerts R, Rinkovec T, Verstraete L, Heideman GH, Minoia A, Harvey JN, Mali KS, De Feyter S, Feringa BL. Highly Ordered Co-Assembly of Bisurea Functionalized Molecular Switches at the Solid-Liquid Interface. Chemistry 2024:e202303994. [PMID: 38323675 DOI: 10.1002/chem.202303994] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Indexed: 02/08/2024]
Abstract
Immobilization of stimulus-responsive systems on solid surfaces is beneficial for controlled signal transmission and adaptive behavior while allowing the characterization of the functional interface with high sensitivity and high spatial resolution. Positioning of the stimuli-responsive units with nanometer-scale precision across the adaptive surface remains one of the bottlenecks in the extraction of cooperative function. Nanoscale organization, cooperativity, and amplification remain key challenges in bridging the molecular and the macroscopic worlds. Here we report on the design, synthesis, and scanning tunneling microscopy (STM) characterization of overcrowded alkene photoswitches merged in self-assembled networks physisorbed at the solid-liquid interface. A detailed anchoring strategy that ensures appropriate orientation of the switches with respect to the solid surface through the use of bis-urea groups is presented. We implement a co-assembly strategy that enables the merging of the photoswitches within physisorbed monolayers of structurally similar 'spacer' molecules. The self-assembly of the individual components and the co-assemblies was examined in detail using (sub)molecular resolution STM which confirms the robust immobilization and controlled orientation of the photoswitches within the spacer monolayers. The experimental STM data is supported by detailed molecular mechanics (MM) simulations. Different designs of the switches and the spacers were investigated which allowed us to formulate guidelines that enable the precise organization of the photoswitches in crystalline physisorbed self-assembled molecular networks.
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Affiliation(s)
- Cosima Stähler
- Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747 AG, Groningen, The Netherlands
| | - Robby Reynaerts
- Division of Molecular Imaging and Photonics, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, B-3001, Leuven, Belgium
| | - Tamara Rinkovec
- Division of Molecular Imaging and Photonics, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, B-3001, Leuven, Belgium
| | - Lander Verstraete
- Division of Molecular Imaging and Photonics, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, B-3001, Leuven, Belgium
- imec, Kapeldreef 75, 3001, Leuven, Belgium
| | - G Henrieke Heideman
- Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747 AG, Groningen, The Netherlands
| | - Andrea Minoia
- Laboratory for Chemistry of Novel Materials, Materials Research Institute, University of Mons, Place du Parc 20, 7000, Mons, Belgium
| | - Jeremy N Harvey
- Division of Molecular Imaging and Photonics, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, B-3001, Leuven, Belgium
| | - Kunal S Mali
- Division of Molecular Imaging and Photonics, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, B-3001, Leuven, Belgium
| | - Steven De Feyter
- Division of Molecular Imaging and Photonics, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, B-3001, Leuven, Belgium
| | - Ben L Feringa
- Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747 AG, Groningen, The Netherlands
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22
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Stockerl WJ, Reißenweber L, Gerwien A, Bach NN, Thumser S, Mayer P, Gschwind RM, Dube H. Azotriptycenes: Photoswitchable Molecular Brakes. Chemistry 2024; 30:e202302267. [PMID: 37779321 DOI: 10.1002/chem.202302267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2023] [Revised: 09/24/2023] [Accepted: 09/27/2023] [Indexed: 10/03/2023]
Abstract
The control of molecular motions is a central topic of molecular machine research. Molecular brakes are fundamental building blocks towards such goal as they allow deliberately decelerating specific motions after an outside stimulus is applied. Here we present azotriptycenes as structural framework for light-controlled molecular brakes. The intrinsic kinetics and their changes upon azotriptycene isomerization are scrutinized comprehensively by a mixed theoretical and variable temperature NMR approach. With azotriptycenes C-N bond rotation rates can be decelerated or accelerated reversibly by up to five orders of magnitude. Rate change effects are highly localized and are strongest for the C-N bond connecting a triptycene rotor fragment to the central diazo group. The detailed mechanistic insights provide a solid basis for further conscious design and applications in the future.
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Affiliation(s)
- Willibald J Stockerl
- Institut für Organische Chemie, Universität Regensburg, Universitätsstr. 31, 93053, Regensburg, Germany
| | - Lilli Reißenweber
- Department of Chemistry and Pharmacy, Friedrich-Alexander Universität Erlangen-Nürnberg, Nikolaus-Fiebiger-Str. 10, 91058, Erlangen, Germany
| | - Aaron Gerwien
- Department of Chemistry and Center for Integrated Protein Science CIPSM, Ludwig-Maximilians Universität München, Butenandtstr. 5-13, 81377, Munich, Germany
| | - Nicolai N Bach
- Department of Chemistry and Pharmacy, Friedrich-Alexander Universität Erlangen-Nürnberg, Nikolaus-Fiebiger-Str. 10, 91058, Erlangen, Germany
| | - Stefan Thumser
- Department of Chemistry and Pharmacy, Friedrich-Alexander Universität Erlangen-Nürnberg, Nikolaus-Fiebiger-Str. 10, 91058, Erlangen, Germany
| | - Peter Mayer
- Department of Chemistry and Center for Integrated Protein Science CIPSM, Ludwig-Maximilians Universität München, Butenandtstr. 5-13, 81377, Munich, Germany
| | - Ruth M Gschwind
- Institut für Organische Chemie, Universität Regensburg, Universitätsstr. 31, 93053, Regensburg, Germany
| | - Henry Dube
- Department of Chemistry and Pharmacy, Friedrich-Alexander Universität Erlangen-Nürnberg, Nikolaus-Fiebiger-Str. 10, 91058, Erlangen, Germany
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23
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Lago-Silva M, Fernández-Míguez M, Rodríguez R, Quiñoá E, Freire F. Stimuli-responsive synthetic helical polymers. Chem Soc Rev 2024; 53:793-852. [PMID: 38105704 DOI: 10.1039/d3cs00952a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2023]
Abstract
Synthetic dynamic helical polymers (supramolecular and covalent) and foldamers share the helix as a structural motif. Although the materials are different, these systems also share many structural properties, such as helix induction or conformational communication mechanisms. The introduction of stimuli responsive building blocks or monomer repeating units in these materials triggers conformational or structural changes, due to the presence/absence of the external stimulus, which are transmitted to the helix resulting in different effects, such as assymetry amplification, helix inversion or even changes in the helical scaffold (elongation, J/H helical aggregates). In this review, we show through selected examples how different stimuli (e.g., temperature, solvents, cations, anions, redox, chiral additives, pH or light) can alter the helical structures of dynamic helical polymers (covalent and supramolecular) and foldamers acting on the conformational composition or molecular structure of their components, which is also transmitted to the macromolecular helical structure.
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Affiliation(s)
- María Lago-Silva
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS) and Departamento de Química Orgánica, Universidade de Santiago de Compostela, E-15782 Santiago de Compostela, Spain.
| | - Manuel Fernández-Míguez
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS) and Departamento de Química Orgánica, Universidade de Santiago de Compostela, E-15782 Santiago de Compostela, Spain.
| | - Rafael Rodríguez
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS) and Departamento de Química Orgánica, Universidade de Santiago de Compostela, E-15782 Santiago de Compostela, Spain.
| | - Emilio Quiñoá
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS) and Departamento de Química Orgánica, Universidade de Santiago de Compostela, E-15782 Santiago de Compostela, Spain.
| | - Félix Freire
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS) and Departamento de Química Orgánica, Universidade de Santiago de Compostela, E-15782 Santiago de Compostela, Spain.
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24
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Arpa EM, Stafström S, Durbeej B. A Proof-of-Principle Design for Through-Space Transmission of Unidirectional Rotary Motion by Molecular Photogears. Chemistry 2024; 30:e202303191. [PMID: 37906675 DOI: 10.1002/chem.202303191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Revised: 10/27/2023] [Accepted: 10/31/2023] [Indexed: 11/02/2023]
Abstract
The construction of molecular photogears that can achieve through-space transmission of the unidirectional double-bond rotary motion of light-driven molecular motors onto a remote single-bond axis is a formidable challenge in the field of artificial molecular machines. Here, we present a proof-of-principle design of such photogears that is based on the possibility of using stereogenic substituents to control both the relative stabilities of two helical forms of the photogear and the double-bond photoisomerization reaction that connects them. The potential of the design was verified by quantum-chemical modeling through which photogearing was found to be a favorable process compared to free-standing single-bond rotation ("slippage"). Overall, our study unveils a surprisingly simple approach to realizing unidirectional photogearing.
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Affiliation(s)
- Enrique M Arpa
- Division of Theoretical Chemistry, IFM, Linköping University, 58183, Linköping, Sweden
| | - Sven Stafström
- Division of Theoretical Physics, IFM, Linköping University, 58183, Linköping, Sweden
| | - Bo Durbeej
- Division of Theoretical Chemistry, IFM, Linköping University, 58183, Linköping, Sweden
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25
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Stähler C, Pooler DRS, Costil R, Sudan D, van der Meulen P, Toyoda R, Feringa BL. Coupled Rocking Motion in a Light-Driven Rotary Molecular Motor. J Org Chem 2024; 89:1-8. [PMID: 36223433 PMCID: PMC10777401 DOI: 10.1021/acs.joc.2c01830] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Indexed: 11/29/2022]
Abstract
Coupled motion is ubiquitous in Nature as it forms the base for the direction, amplification, propagation, and synchronization of movement. Herein, we present experimental proof for the coupling of the rocking motion of a dihydroanthracene stator moiety with the light-induced rotational movement of an overcrowded alkene-based molecular motor. The motor was desymmetrized, introducing two different alkyl substituents to the stator part of the molecular scaffold, resulting in the formation of two diastereomers with opposite axial chirality. The structure of the two isomers is determined with nuclear Overhauser effect spectroscopy NMR and single-crystal X-ray analysis. The desymmetrization enables the study of the coupled motion, that is, rotation and oscillation, by 1H NMR, findings that are further supported by density functional theory calculations. A new handle to regulate the rotational speed of the motor through functionalization in the bottom half was also introduced, as the thermal barrier for thermal helix inversion is found to be largely dependent on the alkyl substituents and its orientation toward the upper half of the motor scaffold. In addition to the commonly observed successive photochemical and thermal steps driving the rotation of the motor, we find that the motor undergoes photochemically driven rotation in three of the four steps of the rotation cycle. Hence, this result extends the scope of molecular motors capable of photon-only rotary behavior.
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Affiliation(s)
- Cosima Stähler
- Stratingh Institute for Chemistry,
Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Daisy R. S. Pooler
- Stratingh Institute for Chemistry,
Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Romain Costil
- Stratingh Institute for Chemistry,
Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Dhruv Sudan
- Stratingh Institute for Chemistry,
Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Pieter van der Meulen
- Stratingh Institute for Chemistry,
Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Ryojun Toyoda
- Stratingh Institute for Chemistry,
Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Ben L. Feringa
- Stratingh Institute for Chemistry,
Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
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26
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Walden SL, Nguyen PHD, Li HK, Liu X, Le MTN, Xian Jun L, Barner-Kowollik C, Truong VX. Visible light-induced switching of soft matter materials properties based on thioindigo photoswitches. Nat Commun 2023; 14:8298. [PMID: 38097621 PMCID: PMC10721821 DOI: 10.1038/s41467-023-44128-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Accepted: 11/30/2023] [Indexed: 12/17/2023] Open
Abstract
Thioindigos are visible light responsive photoswitches with excellent spatial control over the conformational change between their trans- and cis- isomers. However, they possess limited solubility in all conventional organic solvents and polymers, hindering their application in soft matter materials. Herein, we introduce a strategy for the covalent insertion of thioindigo units into polymer main chains, enabling thioindigos to function within crosslinked polymeric hydrogels. We overcome their solubility issue by developing a thioindigo bismethacrylate linker able to undergo radical initiated thiol-ene reaction for step-growth polymerization, generating indigo-containing polymers. The optimal wavelength for the reversible trans-/cis- isomerisation of thioindigo was elucidated by constructing a detailed photochemical action plot of their switching efficiencies at a wide range of monochromatic wavelengths. Critically, indigo-containing polymers display significant photoswitching of the materials' optical and physical properties in organic solvents and water. Furthermore, the photoswitching of thioindigo within crosslinked structures enables visible light induced modulation of the hydrogel stiffness. Both the thioindigo-containing hydrogels and photoswitching processes are non-toxic to cells, thus offering opportunities for advanced applications in soft matter materials and biology-related research.
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Affiliation(s)
- Sarah L Walden
- Centre for Materials Science, Queensland University of Technology (QUT), 2 George Street, Brisbane, QLD 4000, Australia
- School of Chemistry and Physics, Queensland University of Technology (QUT), 2 George Street, Brisbane, QLD 4000, Australia
| | - Phuong H D Nguyen
- Department of Pharmacology and Institute for Digital Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, 117600, Republic of Singapore
| | - Hao-Kai Li
- Fluorescence Research Group, Singapore University of Technology and Design, 8 Somapah Road, 487372, Singapore, Republic of Singapore
| | - Xiaogang Liu
- Fluorescence Research Group, Singapore University of Technology and Design, 8 Somapah Road, 487372, Singapore, Republic of Singapore
| | - Minh T N Le
- Department of Pharmacology and Institute for Digital Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, 117600, Republic of Singapore
| | - Loh Xian Jun
- Institute of Materials Research and Engineering (IMRE), Agency for Science, Technology and Research (A*STAR), 2 Fusionopolis Way, Singapore, 138634, Republic of Singapore.
- Institute of Sustainability for Chemicals, Energy and Environment (ISCE2), Agency for Science, Technology and Research (A*STAR), 1 Pesek Road, Jurong Island, Singapore, 627833, Republic of Singapore.
| | - Christopher Barner-Kowollik
- Centre for Materials Science, Queensland University of Technology (QUT), 2 George Street, Brisbane, QLD 4000, Australia.
- School of Chemistry and Physics, Queensland University of Technology (QUT), 2 George Street, Brisbane, QLD 4000, Australia.
- Institute of Nanotechnology (INT), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344, Eggenstein-Leopoldshafen, Germany.
| | - Vinh X Truong
- School of Chemistry and Physics, Queensland University of Technology (QUT), 2 George Street, Brisbane, QLD 4000, Australia.
- Institute of Materials Research and Engineering (IMRE), Agency for Science, Technology and Research (A*STAR), 2 Fusionopolis Way, Singapore, 138634, Republic of Singapore.
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27
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Zeng X, Yang M, Liu H, Zhang Z, Hu Y, Shi J, Wang ZH. Light-driven micro/nanomotors in biomedical applications. NANOSCALE 2023; 15:18550-18570. [PMID: 37962424 DOI: 10.1039/d3nr03760f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2023]
Abstract
Nanotechnology brings hope for targeted drug delivery. However, most current drug delivery systems use passive delivery strategies with limited therapeutic efficiency. Over the past two decades, research on micro/nanomotors (MNMs) has flourished in the biomedical field. Compared with other driven methods, light-driven MNMs have the advantages of being reversible, simple to control, clean, and efficient. Under light irradiation, the MNMs can overcome several barriers in the body and show great potential in the treatment of various diseases, such as tumors, and gastrointestinal, cardiovascular and cerebrovascular diseases. Herein, the classification and mechanism of light-driven MNMs are introduced briefly. Subsequently, the applications of light-driven MNMs in overcoming physiological and pathological barriers in the past five years are highlighted. Finally, the future prospects and challenges of light-driven MNMs are discussed as well. This review will provide inspiration and direction for light-driven MNMs to overcome biological barriers in vivo and promote the clinical application of light-driven MNMs in the biomedical field.
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Affiliation(s)
- Xuejiao Zeng
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, 450001, China.
- Henan Key Laboratory of Targeting Therapy and Diagnosis for Critical Diseases, Zhengzhou, 450001, China
- Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education, Zhengzhou, 450001, China
| | - Mingzhu Yang
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, 450001, China.
- Henan Key Laboratory of Targeting Therapy and Diagnosis for Critical Diseases, Zhengzhou, 450001, China
- Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education, Zhengzhou, 450001, China
| | - Hua Liu
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, 450001, China.
- Henan Key Laboratory of Targeting Therapy and Diagnosis for Critical Diseases, Zhengzhou, 450001, China
- Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education, Zhengzhou, 450001, China
| | - Zhenzhong Zhang
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, 450001, China.
- Henan Key Laboratory of Targeting Therapy and Diagnosis for Critical Diseases, Zhengzhou, 450001, China
- Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education, Zhengzhou, 450001, China
- State Key Laboratory of Esophageal Cancer Prevention & Treatment, Zhengzhou, 450001, China
| | - Yurong Hu
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, 450001, China.
- Henan Key Laboratory of Targeting Therapy and Diagnosis for Critical Diseases, Zhengzhou, 450001, China
- Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education, Zhengzhou, 450001, China
- State Key Laboratory of Esophageal Cancer Prevention & Treatment, Zhengzhou, 450001, China
| | - Jinjin Shi
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, 450001, China.
- Henan Key Laboratory of Targeting Therapy and Diagnosis for Critical Diseases, Zhengzhou, 450001, China
- Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education, Zhengzhou, 450001, China
- State Key Laboratory of Esophageal Cancer Prevention & Treatment, Zhengzhou, 450001, China
| | - Zhi-Hao Wang
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, 450001, China.
- Henan Key Laboratory of Targeting Therapy and Diagnosis for Critical Diseases, Zhengzhou, 450001, China
- Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education, Zhengzhou, 450001, China
- State Key Laboratory of Esophageal Cancer Prevention & Treatment, Zhengzhou, 450001, China
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28
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Zhao Y, Ye Z, Song D, Wich D, Gao S, Khirallah J, Xu Q. Nanomechanical action opens endo-lysosomal compartments. Nat Commun 2023; 14:6645. [PMID: 37863882 PMCID: PMC10589329 DOI: 10.1038/s41467-023-42280-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Accepted: 10/05/2023] [Indexed: 10/22/2023] Open
Abstract
Endo-lysosomal escape is a highly inefficient process, which is a bottleneck for intracellular delivery of biologics, including proteins and nucleic acids. Herein, we demonstrate the design of a lipid-based nanoscale molecular machine, which achieves efficient cytosolic transport of biologics by destabilizing endo-lysosomal compartments through nanomechanical action upon light irradiation. We fabricate lipid-based nanoscale molecular machines, which are designed to perform mechanical movement by consuming photons, by co-assembling azobenzene lipidoids with helper lipids. We show that lipid-based nanoscale molecular machines adhere onto the endo-lysosomal membrane after entering cells. We demonstrate that continuous rotation-inversion movement of Azo lipidoids triggered by ultraviolet/visible irradiation results in the destabilization of the membranes, thereby transporting cargoes, such as mRNAs and Cre proteins, to the cytoplasm. We find that the efficiency of cytosolic transport is improved about 2.1-fold, compared to conventional intracellular delivery systems. Finally, we show that lipid-based nanoscale molecular machines are competent for cytosolic transport of tumour antigens into dendritic cells, which induce robust antitumour activity in a melanoma mouse model.
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Affiliation(s)
- Yu Zhao
- Department of Biomedical Engineering, Tufts University, Medford, MA, 02155, USA
| | - Zhongfeng Ye
- Department of Biomedical Engineering, Tufts University, Medford, MA, 02155, USA
| | - Donghui Song
- Department of Biomedical Engineering, Tufts University, Medford, MA, 02155, USA
| | - Douglas Wich
- Department of Biomedical Engineering, Tufts University, Medford, MA, 02155, USA
| | - Shuliang Gao
- Department of Biomedical Engineering, Tufts University, Medford, MA, 02155, USA
| | - Jennifer Khirallah
- Department of Biomedical Engineering, Tufts University, Medford, MA, 02155, USA
| | - Qiaobing Xu
- Department of Biomedical Engineering, Tufts University, Medford, MA, 02155, USA.
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29
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Doellerer D, Pooler DRS, Guinart A, Crespi S, Feringa BL. Highly Efficient Oxindole-Based Molecular Photoswitches. Chemistry 2023; 29:e202301634. [PMID: 37345715 DOI: 10.1002/chem.202301634] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Revised: 06/21/2023] [Accepted: 06/22/2023] [Indexed: 06/23/2023]
Abstract
3-Benzylidene-indoline-2-ones play a prominent role in the pharmaceutical industry due to the diverse biomedical applications of oxindole heterocycles. Despite the extensive reports on their biological properties, these compounds have hardly been studied for their photochemical activity. Here, we present 3-benzylidene-indoline-2-ones as a promising class of photoswitches with high yields, robust photochemical switching with quantum yields reaching up to 50 % and potential for biological applications.
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Affiliation(s)
- Daniel Doellerer
- Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747 AG, Groningen, The Netherlands
| | - Daisy R S Pooler
- Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747 AG, Groningen, The Netherlands
| | - Ainoa Guinart
- Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747 AG, Groningen, The Netherlands
| | - Stefano Crespi
- Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747 AG, Groningen, The Netherlands
- Department of Chemistry -, Ångström Laboratory, Uppsala University, Box 523, 751 20, Uppsala, Sweden
| | - Ben L Feringa
- Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747 AG, Groningen, The Netherlands
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30
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Sheng J, Pooler DRS, Feringa BL. Enlightening dynamic functions in molecular systems by intrinsically chiral light-driven molecular motors. Chem Soc Rev 2023; 52:5875-5891. [PMID: 37581608 PMCID: PMC10464662 DOI: 10.1039/d3cs00247k] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Indexed: 08/16/2023]
Abstract
Chirality is a fundamental property which plays a major role in chemistry, physics, biological systems and materials science. Chiroptical artificial molecular motors (AMMs) are a class of molecules which can convert light energy input into mechanical work, and they hold great potential in the transformation from simple molecules to dynamic systems and responsive materials. Taking distinct advantages of the intrinsic chirality in these structures and the unique opportunity to modulate the chirality on demand, chiral AMMs have been designed for the development of light-responsive dynamic processes including switchable asymmetric catalysis, chiral self-assembly, stereoselective recognition, transmission of chirality, control of spin selectivity and biosystems as well as integration of unidirectional motion with specific mechanical functions. This review focuses on the recently developed strategies for chirality-led applications by the class of intrinsically chiral AMMs. Finally, some limitations in current design and challenges associated with recent systems are discussed and perspectives towards promising candidates for responsive and smart molecular systems and future applications are presented.
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Affiliation(s)
- Jinyu Sheng
- Stratingh Institute for Chemistry, Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands.
| | - Daisy R S Pooler
- Stratingh Institute for Chemistry, Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands.
| | - Ben L Feringa
- Stratingh Institute for Chemistry, Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands.
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31
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Kang HW, Liu YC, Shao WK, Wei YC, Hsieh CT, Chen BH, Lu CH, Yang SD, Cheng MJ, Chou PT, Chiang MH, Wu YT. Synthesis, structural analysis, and properties of highly twisted alkenes 13,13'-bis(dibenzo[a,i]fluorenylidene) and its derivatives. Nat Commun 2023; 14:5248. [PMID: 37640729 PMCID: PMC10462764 DOI: 10.1038/s41467-023-40990-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Accepted: 08/18/2023] [Indexed: 08/31/2023] Open
Abstract
The rotation of a C = C bond in an alkene can be efficiently accelerated by creating the high-strain ground state and stabilizing the transition state of the process. Herein, the synthesis, structures, and properties of several highly twisted alkenes are comprehensively explored. A facile and practical synthetic approach to target molecules is developed. The twist angles and lengths of the central C = C bonds in these molecules are 36-58° and 1.40-1.43 Å, respectively, and confirmed by X-ray crystallography and DFT calculations. A quasi-planar molecular half with the π-extended substituents delivers a shallow rotational barrier (down to 2.35 kcal/mol), indicating that the rotation of the C = C bond is as facile as that of the aryl-aryl bond in 2-flourobiphenyl. Other versatile and unique properties of the studied compounds include a broad photoabsorption range (from 250 up to 1100 nm), a reduced HOMO-LUMO gap (1.26-1.68 eV), and a small singlet-triplet energy gap (3.65-5.68 kcal/mol).
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Affiliation(s)
- Hao-Wen Kang
- Department of Chemistry, National Cheng Kung University, 70101, Tainan, Taiwan
| | - Yu-Chiao Liu
- Institute of Chemistry, Academia Sinica, 11529, Taipei, Taiwan
| | - Wei-Kai Shao
- Department of Chemistry, National Cheng Kung University, 70101, Tainan, Taiwan
| | - Yu-Chen Wei
- Department of Chemistry, National Taiwan University, 10617, Taipei, Taiwan
| | - Chi-Tien Hsieh
- Department of Chemistry, National Cheng Kung University, 70101, Tainan, Taiwan
| | - Bo-Han Chen
- Department of Electrical Engineering, National Tsing Hua University, 30013, Hsinchu, Taiwan
| | - Chih-Hsuan Lu
- Department of Electrical Engineering, National Tsing Hua University, 30013, Hsinchu, Taiwan
| | - Shang-Da Yang
- Department of Electrical Engineering, National Tsing Hua University, 30013, Hsinchu, Taiwan
| | - Mu-Jeng Cheng
- Department of Chemistry, National Cheng Kung University, 70101, Tainan, Taiwan
| | - Pi-Tai Chou
- Department of Chemistry, National Taiwan University, 10617, Taipei, Taiwan.
| | - Ming-Hsi Chiang
- Institute of Chemistry, Academia Sinica, 11529, Taipei, Taiwan.
- Department of Medical and Applied Chemistry, Kaohsiung Medical University, 80708, Kaohsiung, Taiwan.
| | - Yao-Ting Wu
- Department of Chemistry, National Cheng Kung University, 70101, Tainan, Taiwan.
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32
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Kuntze K, Pooler DRS, Di Donato M, Hilbers MF, van der Meulen P, Buma WJ, Priimagi A, Feringa BL, Crespi S. A visible-light-driven molecular motor based on barbituric acid. Chem Sci 2023; 14:8458-8465. [PMID: 37592992 PMCID: PMC10430646 DOI: 10.1039/d3sc03090c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Accepted: 07/20/2023] [Indexed: 08/19/2023] Open
Abstract
We present a class of visible-light-driven molecular motors based on barbituric acid. Due to a serendipitous reactivity we observed during their synthesis, these motors possess a tertiary stereogenic centre on the upper half, characterised by a hydroxy group. Using a combination of femto- and nanosecond transient absorption spectroscopy, molecular dynamics simulations and low-temperature 1H NMR experiments we found that these motors operate similarly to push-pull second-generation overcrowded alkene-based molecular motors. Interestingly, the hydroxy group at the stereocentre enables a hydrogen bond with the carbonyl groups of the barbituric acid lower half, which drives a sub-picosecond excited-state isomerisation, as observed spectroscopically. Computational simulations predict an excited state "lasso" mechanism where the intramolecular hydrogen bond pulls the molecule towards the formation of the metastable state, with a high predicted quantum yield of isomerisation (68%) in gas phase.
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Affiliation(s)
- Kim Kuntze
- Stratingh Institute for Chemistry, University of Groningen Nijenborgh 4 9746 AG Groningen The Netherlands
- Faculty of Engineering and Natural Sciences, Tampere University FI-33101 Tampere Finland
| | - Daisy R S Pooler
- Stratingh Institute for Chemistry, University of Groningen Nijenborgh 4 9746 AG Groningen The Netherlands
| | - Mariangela Di Donato
- European Laboratory for Non Linear Spectroscopy (LENS) via N. Carrara 1 50019 Sesto Fiorentino Italy
- ICCOM-CNR via Madonna del Piano 10 50019 Sesto Fiorentino FI Italy
| | - Michiel F Hilbers
- Van't Hoff Institute for Molecular Sciences, University of Amsterdam Science Park 904 1098 XH Amsterdam The Netherlands
| | - Pieter van der Meulen
- Stratingh Institute for Chemistry, University of Groningen Nijenborgh 4 9746 AG Groningen The Netherlands
| | - Wybren Jan Buma
- Van't Hoff Institute for Molecular Sciences, University of Amsterdam Science Park 904 1098 XH Amsterdam The Netherlands
- Institute for Molecules and Materials, FELIX Laboratory, Radboud University Toernooiveld 7c 6525 ED Nijmegen The Netherlands
| | - Arri Priimagi
- Faculty of Engineering and Natural Sciences, Tampere University FI-33101 Tampere Finland
| | - Ben L Feringa
- Stratingh Institute for Chemistry, University of Groningen Nijenborgh 4 9746 AG Groningen The Netherlands
| | - Stefano Crespi
- Stratingh Institute for Chemistry, University of Groningen Nijenborgh 4 9746 AG Groningen The Netherlands
- Department of Chemistry, Ångström Laboratory, Uppsala University Box 523 751 20 Uppsala Sweden
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33
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Regen-Pregizer BL, Ozcelik A, Mayer P, Hampel F, Dube H. A photochemical method to evidence directional molecular motions. Nat Commun 2023; 14:4595. [PMID: 37524701 PMCID: PMC10390485 DOI: 10.1038/s41467-023-40190-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Accepted: 07/17/2023] [Indexed: 08/02/2023] Open
Abstract
Light driven synthetic molecular motors represent crucial building blocks for advanced molecular machines and their applications. A standing challenge is the development of very fast molecular motors able to perform rotations with kHz, MHz or even faster frequencies. Central to this challenge is the direct experimental evidence of directionality because analytical methods able to follow very fast motions rarely deliver precise geometrical insights. Here, a general photochemical method for elucidation of directional motions is presented. In a macrocyclization approach the molecular motor rotations are restricted and forced to proceed in two separate ~180° rotation-photoequilibria. Therefore, all four possible photoinduced rotation steps (clockwise and counterclockwise directions) can be quantified. Comparison of the corresponding quantum yields to the unrestricted motor delivers direct evidence for unidirectionality. This method can be used for any ultrafast molecular motor even in cases where no high energy intermediates are present during the rotation cycle.
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Affiliation(s)
- Benjamin Lukas Regen-Pregizer
- Friedrich-Alexander Universität Erlangen-Nürnberg, Department of Chemistry and Pharmacy, Nikolaus-Fiebiger-Str. 10, 91058, Erlangen, Germany
| | - Ani Ozcelik
- Friedrich-Alexander Universität Erlangen-Nürnberg, Department of Chemistry and Pharmacy, Nikolaus-Fiebiger-Str. 10, 91058, Erlangen, Germany
| | - Peter Mayer
- Ludwig-Maximilians Universität München, Department of Chemistry and Center for Integrated Protein Science CIPSM, Butenandtstr. 5-13, 81377, Munich, Germany
| | - Frank Hampel
- Friedrich-Alexander Universität Erlangen-Nürnberg, Department of Chemistry and Pharmacy, Nikolaus-Fiebiger-Str. 10, 91058, Erlangen, Germany
| | - Henry Dube
- Friedrich-Alexander Universität Erlangen-Nürnberg, Department of Chemistry and Pharmacy, Nikolaus-Fiebiger-Str. 10, 91058, Erlangen, Germany.
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34
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Sacherer M, Hampel F, Dube H. Diaryl-hemiindigos as visible light, pH, and heat responsive four-state switches and application in photochromic transparent polymers. Nat Commun 2023; 14:4382. [PMID: 37474507 PMCID: PMC10359318 DOI: 10.1038/s41467-023-39944-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Accepted: 06/14/2023] [Indexed: 07/22/2023] Open
Abstract
Photoswitches are indispensable tools for responsive chemical nanosystems and are used today in almost all areas of the natural sciences. Hemiindigo (HI) derivatives have recently been introduced as potent photoswitches, but their full applicability has been hampered by the limited possibilities of their functionalization and structural modification. Here we report on a short and easy to diversify synthesis yielding diaryl-HIs bearing one additional aromatic residue at the central double bond. The resulting chromophores offer an advantageous property profile combining red-light responsiveness, high thermal bistability, strong isomer accumulations in both switching directions, strong photochromism, tunable acid responsiveness, and acid gating. With this progress, a broader structural realm becomes accessible for HI photoswitches, which can now be synthetically tailored for advanced future applications, e.g., in research on molecular machines and switches, in studies of photoisomerization mechanisms, or in the generation of smart and addressable materials. To showcase the potential of these distinct light-responsive molecular tools, we demonstrate four-state switching, chemical fueling, and reversible inscription into transparent polymers using green and red light as well as acid/base stimuli, in addition to a comprehensive photochemical study of all compounds.
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Affiliation(s)
- Maximilian Sacherer
- Friedrich-Alexander Universität Erlangen-Nürnberg, Department of Chemistry and Pharmacy, Nikolaus-Fiebiger-Str. 10, 91058, Erlangen, Germany
| | - Frank Hampel
- Friedrich-Alexander Universität Erlangen-Nürnberg, Department of Chemistry and Pharmacy, Nikolaus-Fiebiger-Str. 10, 91058, Erlangen, Germany
| | - Henry Dube
- Friedrich-Alexander Universität Erlangen-Nürnberg, Department of Chemistry and Pharmacy, Nikolaus-Fiebiger-Str. 10, 91058, Erlangen, Germany.
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35
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Guinart A, Korpidou M, Doellerer D, Pacella G, Stuart MCA, Dinu IA, Portale G, Palivan C, Feringa BL. Synthetic molecular motor activates drug delivery from polymersomes. Proc Natl Acad Sci U S A 2023; 120:e2301279120. [PMID: 37364098 PMCID: PMC10319042 DOI: 10.1073/pnas.2301279120] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2023] [Accepted: 04/27/2023] [Indexed: 06/28/2023] Open
Abstract
The design of stimuli-responsive systems in nanomedicine arises from the challenges associated with the unsolved needs of current molecular drug delivery. Here, we present a delivery system with high spatiotemporal control and tunable release profiles. The design is based on the combination of an hydrophobic synthetic molecular rotary motor and a PDMS-b-PMOXA diblock copolymer to create a responsive self-assembled system. The successful incorporation and selective activation by low-power visible light (λ = 430 nm, 6.9 mW) allowed to trigger the delivery of a fluorescent dye with high efficiencies (up to 75%). Moreover, we proved the ability to turn on and off the responsive behavior on demand over sequential cycles. Low concentrations of photoresponsive units (down to 1 mol% of molecular motor) are shown to effectively promote release. Our system was also tested under relevant physiological conditions using a lung cancer cell line and the encapsulation of an Food and Drug Administration (FDA)-approved drug. Similar levels of cell viability are observed compared to the free given drug showing the potential of our platform to deliver functional drugs on request with high efficiency. This work provides an important step for the application of synthetic molecular machines in the next generation of smart delivery systems.
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Affiliation(s)
- Ainoa Guinart
- Faculty of Science and Engineering, Stratingh Institute for Chemistry, University of Groningen, 9747 AGGroningen, The Netherlands
| | - Maria Korpidou
- Department of Chemistry, University of Basel, BPR 1096, 4058Basel, Switzerland
| | - Daniel Doellerer
- Faculty of Science and Engineering, Stratingh Institute for Chemistry, University of Groningen, 9747 AGGroningen, The Netherlands
| | - Gianni Pacella
- Faculty of Science and Engineering, Zernike Institute for Advanced Materials, University of Groningen, 9747 AGGroningen, The Netherlands
| | - Marc C. A. Stuart
- Faculty of Science and Engineering, Stratingh Institute for Chemistry, University of Groningen, 9747 AGGroningen, The Netherlands
| | - Ionel Adrian Dinu
- Department of Chemistry, University of Basel, BPR 1096, 4058Basel, Switzerland
- National Centre of Competence in Research-Molecular Systems Engineering, BioPark Rosental 1095Basel, Switzerland
| | - Giuseppe Portale
- Faculty of Science and Engineering, Zernike Institute for Advanced Materials, University of Groningen, 9747 AGGroningen, The Netherlands
| | - Cornelia Palivan
- Department of Chemistry, University of Basel, BPR 1096, 4058Basel, Switzerland
- National Centre of Competence in Research-Molecular Systems Engineering, BioPark Rosental 1095Basel, Switzerland
- Swiss Nanoscience Institute, University of Basel, 4056Basel, Switzerland
| | - Ben L. Feringa
- Faculty of Science and Engineering, Stratingh Institute for Chemistry, University of Groningen, 9747 AGGroningen, The Netherlands
- Faculty of Science and Engineering, Zernike Institute for Advanced Materials, University of Groningen, 9747 AGGroningen, The Netherlands
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36
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Corra S, Curcio M, Credi A. Photoactivated Artificial Molecular Motors. JACS AU 2023; 3:1301-1313. [PMID: 37234111 PMCID: PMC10207102 DOI: 10.1021/jacsau.3c00089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Revised: 04/24/2023] [Accepted: 04/25/2023] [Indexed: 05/27/2023]
Abstract
Accurate control of long-range motion at the molecular scale holds great potential for the development of ground-breaking applications in energy storage and bionanotechnology. The past decade has seen tremendous development in this area, with a focus on the directional operation away from thermal equilibrium, giving rise to tailored man-made molecular motors. As light is a highly tunable, controllable, clean, and renewable source of energy, photochemical processes are appealing to activate molecular motors. Nonetheless, the successful operation of molecular motors fueled by light is a highly challenging task, which requires a judicious coupling of thermal and photoinduced reactions. In this paper, we focus on the key aspects of light-driven artificial molecular motors with the aid of recent examples. A critical assessment of the criteria for the design, operation, and technological potential of such systems is provided, along with a perspective view on future advances in this exciting research area.
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Affiliation(s)
- Stefano Corra
- CLAN-Center
for Light Activated Nanostructures, Istituto
per la Sintesi Organica e Fotoreattività, CNR area della ricerca
Bologna, via Gobetti,
101, 40129 Bologna, Italy
- Dipartimento
di Chimica Industriale “Toso-Montanari”, Alma Mater Studiorum - Università di Bologna, viale del Risorgimento, 8, 40136 Bologna, Italy
| | - Massimiliano Curcio
- CLAN-Center
for Light Activated Nanostructures, Istituto
per la Sintesi Organica e Fotoreattività, CNR area della ricerca
Bologna, via Gobetti,
101, 40129 Bologna, Italy
- Dipartimento
di Chimica Industriale “Toso-Montanari”, Alma Mater Studiorum - Università di Bologna, viale del Risorgimento, 8, 40136 Bologna, Italy
| | - Alberto Credi
- CLAN-Center
for Light Activated Nanostructures, Istituto
per la Sintesi Organica e Fotoreattività, CNR area della ricerca
Bologna, via Gobetti,
101, 40129 Bologna, Italy
- Dipartimento
di Chimica Industriale “Toso-Montanari”, Alma Mater Studiorum - Università di Bologna, viale del Risorgimento, 8, 40136 Bologna, Italy
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37
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Ma J, Zhao D, Yu L, Jiang C, Lan Z, Li F. Simultaneously improving the efficiencies of photo- and thermal isomerization of an oxindole-based light-driven molecular rotary motor by a structural redesign. Phys Chem Chem Phys 2023; 25:12800-12809. [PMID: 37129050 DOI: 10.1039/d3cp00559c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
We designed a novel highly efficient light-driven molecular rotary motor theoretically by using electronic structure calculations and nonadiabatic dynamics simulations, and it showed excellent performance for both photo- and thermal isomerization processes simultaneously. By the small structural modification based on 3-(2,7-dimethyl-2,3-dihydro-1H-inden-1-ylidene)-1-methylindolin-2-one (DDIYM) synthesized by Feringa et al. recently, an oxindole-based light-driven molecular rotary motor, 3-(1,5-dimethyl-4,5-dihydrocyclopenta[b]pyrrol-6(1H)-ylidene)-1-methylindolin-2-one (DDPYM), is proposed, which displays a significant electronic push-pull character and weak steric hindrance for double-bond isomerization. The newly designed motor DDPYM shows a remarkable improvement of the quantum yield for both EP → ZM and ZP → EM photoisomerization processes, compared to the original motor DDIYM. Furthermore, the rotary motion in photoisomerization processes of DDPYM behaves more like a pure axial rotational motion approximately, while that of DDIYM is an obvious precessional motion. The weakness of the steric hindrance reduces the energy barriers of the thermal helix EM → EP and ZM → ZP inversion steps, and would accelerate two ground-state isomerization steps significantly. Our results confirm the feasibility of simultaneously improving the efficiencies of photo- and thermal isomerization of oxindole-based light-driven molecular rotary motors and this design idea sheds light on the future development of more efficient molecular motors.
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Affiliation(s)
- Jianzheng Ma
- Ministry of Education Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Shaanxi Province Key Laboratory of Quantum Information and Quantum Optoelectronic Devices, School of Physics, Xi'an Jiaotong University, Xian 710049, China.
| | - Di Zhao
- Ministry of Education Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Shaanxi Province Key Laboratory of Quantum Information and Quantum Optoelectronic Devices, School of Physics, Xi'an Jiaotong University, Xian 710049, China.
| | - Le Yu
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry & Materials Science, Shaanxi Key Laboratory of Physico-Inorganic Chemistry, Northwest University, Xi'an 710127, China
| | - Chenwei Jiang
- Ministry of Education Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Shaanxi Province Key Laboratory of Quantum Information and Quantum Optoelectronic Devices, School of Physics, Xi'an Jiaotong University, Xian 710049, China.
| | - Zhenggang Lan
- SCNU Environmental Research Institute, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Environmental Theoretical Chemistry, South China Normal University, Guangzhou 510006, China; School of Environment, South China Normal University, Guangzhou 510006, China.
| | - Fuli Li
- Ministry of Education Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Shaanxi Province Key Laboratory of Quantum Information and Quantum Optoelectronic Devices, School of Physics, Xi'an Jiaotong University, Xian 710049, China.
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38
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Varela-Domínguez N, López-Bueno C, López-Moreno A, Claro MS, Rama G, Leborán V, Giménez-López MDC, Rivadulla F. Light-induced bi-directional switching of thermal conductivity in azobenzene-doped liquid crystal mesophases. JOURNAL OF MATERIALS CHEMISTRY. C 2023; 11:4588-4594. [PMID: 37033203 PMCID: PMC10077501 DOI: 10.1039/d3tc00099k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Accepted: 02/23/2023] [Indexed: 06/19/2023]
Abstract
The development of systems that can be switched between states with different thermal conductivities is one of the current challenges in materials science. Despite their enormous diversity and chemical richness, molecular materials have been only scarcely explored in this regard. Here, we report a reversible, light-triggered thermal conductivity switching of ≈30-40% in mesophases of pure 4,4'-dialkyloxy-3-methylazobenzene. By doping a liquid crystal matrix with the azobenzene molecules, reversible and bidirectional switching of the thermal conductivity can be achieved by UV/Vis-light irradiation. Given the enormous variety of photoactive molecules and chemically compatible liquid crystal mesophases, this approach opens unforeseen possibilities for developing effective thermal switches based on molecular materials.
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Affiliation(s)
- Noa Varela-Domínguez
- CiQUS, Centro Singular de Investigacion en Quimica Bioloxica e Materiais Moleculares, Departamento de Quimica-Fisica, Universidade de Santiago de Compostela 15782-Santiago de Compostela Spain
| | - Carlos López-Bueno
- CiQUS, Centro Singular de Investigacion en Quimica Bioloxica e Materiais Moleculares, Departamento de Quimica-Fisica, Universidade de Santiago de Compostela 15782-Santiago de Compostela Spain
| | - Alejandro López-Moreno
- CiQUS, Centro Singular de Investigacion en Quimica Bioloxica e Materiais Moleculares, Departamento de Quimica-Inorganica, Universidade de Santiago de Compostela 15782-Santiago de Compostela Spain
| | - Marcel S Claro
- CiQUS, Centro Singular de Investigacion en Quimica Bioloxica e Materiais Moleculares, Departamento de Quimica-Fisica, Universidade de Santiago de Compostela 15782-Santiago de Compostela Spain
| | - Gustavo Rama
- CiQUS, Centro Singular de Investigacion en Quimica Bioloxica e Materiais Moleculares, Departamento de Quimica-Inorganica, Universidade de Santiago de Compostela 15782-Santiago de Compostela Spain
| | - Víctor Leborán
- CiQUS, Centro Singular de Investigacion en Quimica Bioloxica e Materiais Moleculares, Universidade de Santiago de Compostela 15782-Santiago de Compostela Spain
| | - María Del Carmen Giménez-López
- CiQUS, Centro Singular de Investigacion en Quimica Bioloxica e Materiais Moleculares, Departamento de Quimica-Inorganica, Universidade de Santiago de Compostela 15782-Santiago de Compostela Spain
| | - Francisco Rivadulla
- CiQUS, Centro Singular de Investigacion en Quimica Bioloxica e Materiais Moleculares, Departamento de Quimica-Fisica, Universidade de Santiago de Compostela 15782-Santiago de Compostela Spain
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39
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Perrot A, Wang WZ, Buhler E, Moulin E, Giuseppone N. Bending Actuation of Hydrogels through Rotation of Light-Driven Molecular Motors. Angew Chem Int Ed Engl 2023; 62:e202300263. [PMID: 36715696 DOI: 10.1002/anie.202300263] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Revised: 01/26/2023] [Accepted: 01/30/2023] [Indexed: 01/31/2023]
Abstract
The unidirectional rotation of chemically crosslinked light-driven molecular motors is shown to progressively shift the swelling equilibrium of hydrogels. The concentration of molecular motors and the initial strand density of the polymer network are key parameters to modulate the macroscopic contraction of the material, and both parameters can be tuned using polymer chains of different molecular weights. These findings led to the design of optimized hydrogels revealing a half-time contraction of approximately 5 min. Furthermore, under inhomogeneous stimulation, the local contraction event was exploited to design useful bending actuators with an energy output 400 times higher than for previously reported self-assembled systems involving rotary motors. In the present configuration, we measure that a single molecular motor can lift up loads of 200 times its own molecular weight.
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Affiliation(s)
- Alexis Perrot
- SAMS Research Group, Université de Strasbourg, CNRS, Institut Charles Sadron UPR 22, 67000, Strasbourg, France.,School of Chemistry, University of Birmingham, Birmingham, B15 2TT, UK
| | - Wen-Zhi Wang
- SAMS Research Group, Université de Strasbourg, CNRS, Institut Charles Sadron UPR 22, 67000, Strasbourg, France
| | - Eric Buhler
- Matière et Systèmes Complexes (MSC), UMR CNRS 7057, Université Paris Cité, Bâtiment Condorcet, 75013, Paris, France
| | - Emilie Moulin
- SAMS Research Group, Université de Strasbourg, CNRS, Institut Charles Sadron UPR 22, 67000, Strasbourg, France
| | - Nicolas Giuseppone
- SAMS Research Group, Université de Strasbourg, CNRS, Institut Charles Sadron UPR 22, 67000, Strasbourg, France
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40
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Liu L, Fang WH, Martinez TJ. A Nitrogen Out-of-Plane (NOOP) Mechanism for Imine-Based Light-Driven Molecular Motors. J Am Chem Soc 2023; 145:6888-6898. [PMID: 36920260 DOI: 10.1021/jacs.3c00275] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/16/2023]
Abstract
Light-driven molecular motors have generated considerable interest due to their potential applications in material and biological systems. Recently, Greb and Lehn reported a new class of molecular motors, chiral N-alkyl imines, which undergo unidirectional rotation induced by light and heat. The mechanism of unidirectional motion in molecular motors containing a C═N group has been assumed to consist of photoinduced torsion about the double bond. In this work, we present a computational study of the photoisomerization dynamics of a chiral N-alkyl imine motor. We find that the location and energetics of minimal energy conical intersections (MECIs) alone are insufficient to understand the mechanism of the motor. Furthermore, a key part of the mechanism consists of out-of-plane distortions of the N atom (followed by isomerization about the double bond). Dynamic effects and out-of-plane distortions are critical to understand the observed (rather low) quantum yield for photoisomerization. Our results provide hints as to how the photoisomerization quantum yield might be increased, improving the efficiency of this class of molecular motors.
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Affiliation(s)
- Lihong Liu
- Key Laboratory of Theoretical and Computational Photochemistry, Ministry of Education, College of Chemistry, Beijing Normal University, Beijing 100875, China.,Department of Chemistry and PULSE Institute, Stanford University, Stanford, California 94305, United States.,SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States
| | - Wei-Hai Fang
- Key Laboratory of Theoretical and Computational Photochemistry, Ministry of Education, College of Chemistry, Beijing Normal University, Beijing 100875, China
| | - Todd J Martinez
- Department of Chemistry and PULSE Institute, Stanford University, Stanford, California 94305, United States.,SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States
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41
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Lee HI, Gaul C. Sign flips, crossovers, and spatial inversions in surface plasmon resonance across a chiral-metal interface. OPTICS LETTERS 2023; 48:1391-1394. [PMID: 36946935 DOI: 10.1364/ol.484329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Accepted: 01/30/2023] [Indexed: 06/18/2023]
Abstract
We consider the surface plasmon resonance established along an interface between a metal and a chiral medium (chiral case). Resulting solutions are compared with those obtained for a metal-dielectric interface (achiral case). We found that the chiral case exhibits either larger or smaller phase speeds than the achiral case due to the energy redistribution between translation and rotation. For a loss-free system, we found crossovers among the dispersion curves and spatial inversions in field profiles. These features are associated with anti-symmetric spin flips with respect to medium chirality. The short-wavelength limit leads to an upper bound on the medium chirality.
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42
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Roy P, Browne WR, Feringa BL, Meech SR. Ultrafast motion in a third generation photomolecular motor. Nat Commun 2023; 14:1253. [PMID: 36878920 PMCID: PMC9988961 DOI: 10.1038/s41467-023-36777-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Accepted: 02/13/2023] [Indexed: 03/08/2023] Open
Abstract
Controlling molecular translation at the nanoscale is a key objective for development of synthetic molecular machines. Recently developed third generation photochemically driven molecular motors (3GMs), comprising pairs of overcrowded alkenes capable of cooperative unidirectional rotation offer the possibility of converting light energy into translational motion. Further development of 3GMs demands detailed understanding of their excited state dynamics. Here we use time-resolved absorption and emission to track population and coherence dynamics in a 3GM. Femtosecond stimulated Raman reveals real-time structural dynamics as the excited state evolves from a Franck-Condon bright-state through weakly-emissive dark-state to the metastable product, yielding new insight into the reaction coordinate. Solvent polarity modifies the photoconversion efficiency suggesting charge transfer character in the dark-state. The enhanced quantum yield correlates with suppression of a low-frequency flapping motion in the excited state. This detailed characterization facilitates development of 3GMs, suggesting exploitation of medium and substituent effects to modulate motor efficiency.
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Affiliation(s)
- Palas Roy
- School of Chemistry, University of East Anglia, Norwich Research Park, Norwich, NR4 7TJ, United Kingdom.,School of Basic Sciences, Indian Institute of Technology Bhubaneswar, Argul, Odisha, 752050, India
| | - Wesley R Browne
- Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747AG, Groningen, The Netherlands
| | - Ben L Feringa
- Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747AG, Groningen, The Netherlands.
| | - Stephen R Meech
- School of Chemistry, University of East Anglia, Norwich Research Park, Norwich, NR4 7TJ, United Kingdom.
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43
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Xu F, Feringa BL. Photoresponsive Supramolecular Polymers: From Light-Controlled Small Molecules to Smart Materials. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2204413. [PMID: 36239270 DOI: 10.1002/adma.202204413] [Citation(s) in RCA: 34] [Impact Index Per Article: 34.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Revised: 08/18/2022] [Indexed: 06/16/2023]
Abstract
Photoresponsive supramolecular polymers are well-organized assemblies based on highly oriented and reversible noncovalent interactions containing photosensitive molecules as (co-)monomers. They have attracted increasing interest in smart materials and dynamic systems with precisely controllable functions, such as light-driven soft actuators, photoresponsive fluorescent anticounterfeiting and light-triggered electronic devices. The present review discusses light-activated molecules used in photoresponsive supramolecular polymers with their main photo-induced changes, e.g., geometry, dipole moment, and chirality. Based on these distinct changes, supramolecular polymers formed by light-activated molecules exhibit photoresponsive disassembly and reassembly. As a consequence, photo-induced supramolecular polymerization, "depolymerization," and regulation of the lengths and topologies are observed. Moreover, the light-controlled functions of supramolecular polymers, such as actuation, emission, and chirality transfer along length scales, are highlighted. Furthermore, a perspective on challenges and future opportunities is presented. Besides the challenge of moving from harmful UV light to visible/near IR light avoiding fatigue, and enabling biomedical applications, future opportunities include light-controlled supramolecular actuators with helical motion, light-modulated information transmission, optically recyclable materials, and multi-stimuli-responsive supramolecular systems.
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Affiliation(s)
- Fan Xu
- Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, Groningen, 9747 AG, The Netherlands
| | - Ben L Feringa
- Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, Groningen, 9747 AG, The Netherlands
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44
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Ovalle M, Kathan M, Toyoda R, Stindt CN, Crespi S, Feringa BL. Light-Fueled Transformations of a Dynamic Cage-Based Molecular System. Angew Chem Int Ed Engl 2023; 62:e202214495. [PMID: 36453623 DOI: 10.1002/anie.202214495] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2022] [Revised: 11/22/2022] [Accepted: 11/29/2022] [Indexed: 12/03/2022]
Abstract
In a chemical equilibrium, the formation of high-energy species-in a closed system-is inefficient due to microscopic reversibility. Here, we demonstrate how this restriction can be circumvented by coupling a dynamic equilibrium to a light-induced E/Z isomerization of an azobenzene imine cage. The stable E-cage resists intermolecular imine exchange reactions that would "open" it. Upon switching, the strained Z-cage isomers undergo imine exchange spontaneously, thus opening the cage. Subsequent isomerization of the Z-open compounds yields a high-energy, kinetically trapped E-open species, which cannot be efficiently obtained from the initial E-cage, thus shifting an imine equilibrium energetically uphill in a closed system. Upon heating, the nucleophile is displaced back into solution and an opening/closing cycle is completed by regenerating the stable all-E-cage. Using this principle, a light-induced cage-to-cage transformation is performed by the addition of a ditopic aldehyde.
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Affiliation(s)
- Marco Ovalle
- Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747AG, Groningen (The, Netherlands
| | - Michael Kathan
- Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747AG, Groningen (The, Netherlands.,Present address: Department of Chemistry, Humboldt-Universität zu Berlin, Brook-Taylor-Str. 2, 12489, Berlin, Germany
| | - Ryojun Toyoda
- Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747AG, Groningen (The, Netherlands.,Present address: Department of Chemistry, Graduate School of Science, Tohoku University, 6-3 Aramaki-Aza-Aoba, Aobaku, Sendai, 980-8578, Japan
| | - Charlotte N Stindt
- Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747AG, Groningen (The, Netherlands
| | - Stefano Crespi
- Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747AG, Groningen (The, Netherlands.,Present address: Department of Chemistry-Ångström Laboratory, Uppsala University, Box 523, 75120, Uppsala, Sweden
| | - Ben L Feringa
- Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747AG, Groningen (The, Netherlands
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45
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Yang F, Yue B, Zhu L. Light-triggered Modulation of Supramolecular Chirality. Chemistry 2023; 29:e202203794. [PMID: 36653305 DOI: 10.1002/chem.202203794] [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: 12/05/2022] [Revised: 01/17/2023] [Accepted: 01/18/2023] [Indexed: 01/20/2023]
Abstract
Dynamically controlling the supramolecular chirality is of great significance in development of functional chiral materials, which is thus essential for the specific function implementation. As an external energy input, light is remote and accurate for modulating chiral assemblies. In non-polarized light control, some photochemically reactive units (e. g., azobenzene, ɑ-cyanostilbene, spiropyran, anthracene) or photo-induced directionally rotating molecular motors were designed to drive chiral transfer or amplification. Besides, photoexcitation induced assembly based physical approach was also explored recently to regulate supramolecular chirality beyond photochemical reactions. In addition, circularly polarized light was applied to induce asymmetric arrangement of organic molecules and asymmetric photochemical synthesis of inorganic metallic nanostructures, in which both wavelength and handedness of circularly polarized light have effects on the induced supramolecular chirality. Although light-triggered chiral assemblies have been widely applied in photoelectric materials, biomedical fields, soft actuator, chiral catalysis and chiral sensing, there is a lack of systematic review on this topic. In this review, we summarized the recent studies and perspectives in the constructions and applications of light-responsive chiral assembled systems, aiming to provide better knowledge for the development of multifunctional chiral nanomaterials.
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Affiliation(s)
- Fan Yang
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai, 200093, P. R. China
| | - Bingbing Yue
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai, 200093, P. R. China.,State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai, 200438, P. R. China
| | - Liangliang Zhu
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai, 200438, P. R. China
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Arumugam S, Bhattacharya M, Gorantla SMNVT, Mondal KC. Redox Active cAAC-Fluorene/Indene Systems Displaying Solvatochromism, Green Luminescence and pH Sensing: Functionalization of Fluorenyl/Indenyl Rings with Radical Carbene. Chem Asian J 2023; 18:e202201041. [PMID: 36420907 DOI: 10.1002/asia.202201041] [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: 10/13/2022] [Revised: 11/23/2022] [Accepted: 11/24/2022] [Indexed: 11/25/2022]
Abstract
Two new series of air stable compounds of cAACX = fluorene/indene (X = Me2 , Et2 , Cy) [cAAC = cyclic (alkyl) amino carbene] have been isolated and well characterized by X-ray single crystal diffraction, photoluminescence, cyclic voltammogram (CV) and electron paramagnetic resonance (EPR) studies. Fluorescence studies reveals green light emission of cAAC bonded fluorene, whereas free fluorene generally displays a violet emission. Interestingly, the sterically crowded cAAC-fluorene analogue display solvatochromism and CF3 CO2 H sensing in solution. CV of the these compounds show a quasi-reversible electron transfer process, indicating the functionalization of fluorene/indene with radical anionic form of carbene, confirmed by CV/EPR measurements. DFT/TDDFT calculations and energy decomposition analysis coupled with natural orbital for chemical valence (EDA-NOCV) have been carried out to study different aspects of bonding and electronic transitions. Such a class of redox active and thermally stable organic molecules may be suitable for molecule based spin memory devices in future.
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Affiliation(s)
- Selvakumar Arumugam
- Department of Chemistry, Indian Institute of Technology Madras, Chennai, 600036, India
| | - Madhuri Bhattacharya
- Department of Chemistry, Indian Institute of Technology Madras, Chennai, 600036, India
| | | | - Kartik Chandra Mondal
- Department of Chemistry, Indian Institute of Technology Madras, Chennai, 600036, India
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47
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Krell-Jørgensen M, Zulfikri H, Bonnevie MG, Bro FS, Dohn AO, Laraia L. Redshifted and thermally bistable one-way quantitative hemithioindigo-derived photoswitches enabled by isomer-specific excited state intramolecular proton transfer. Chem Commun (Camb) 2023; 59:563-566. [PMID: 36537010 DOI: 10.1039/d2cc05548a] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
We report bistable indole-containing hemithioindigos (HTIs) with one-way quantitative photoswitching properties. Supported by state-averaged CASPT2/CASSCF calculations, we propose a mechanism for the observed one-way photoswitching that involves an isomer-specific excited state intramolecular proton transfer (ESIPT). Additionally, we developed a thermally bistable oligomer-inspired bipyrrole-containing HTI, which displays large band separation and bidirectional near-quantitative photoisomerization in the near-infrared, bio-optical window.
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Affiliation(s)
- Mikkel Krell-Jørgensen
- Department of Chemistry, Technical University of Denmark, Kemitorvet 2800, Kongens Lyngby, Denmark.
| | - Habiburrahman Zulfikri
- Science Institute and Faculty of Physical Sciences, University of Iceland, Reykjavík, Iceland.,Department of Chemical Engineering, Faculty of Engineering, Universitas Indonesia, Depok 16424, Indonesia
| | - Magnus Grage Bonnevie
- Department of Chemistry, Technical University of Denmark, Kemitorvet 2800, Kongens Lyngby, Denmark.
| | - Frederik Simonsen Bro
- Department of Chemistry, Technical University of Denmark, Kemitorvet 2800, Kongens Lyngby, Denmark.
| | - Asmus Ougaard Dohn
- Science Institute and Faculty of Physical Sciences, University of Iceland, Reykjavík, Iceland.,Department of Physics, Technical University of Denmark, Fysikvej 2800, Kongens Lyngby, Denmark
| | - Luca Laraia
- Department of Chemistry, Technical University of Denmark, Kemitorvet 2800, Kongens Lyngby, Denmark.
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48
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Lv J, Ding Y, Sun P, Wang J, Chen T, Zhao X, Fang C, Wang L. Theoretical study on the working mechanism and computational evidence of robust imine-based light-driven molecular motor. Chem Phys Lett 2023. [DOI: 10.1016/j.cplett.2022.140245] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Abstract
Macroscopic electric motors continue to have a large impact on almost every aspect of modern society. Consequently, the effort towards developing molecular motors1-3 that can be driven by electricity could not be more timely. Here we describe an electric molecular motor based on a [3]catenane4,5, in which two cyclobis(paraquat-p-phenylene)6 (CBPQT4+) rings are powered by electricity in solution to circumrotate unidirectionally around a 50-membered loop. The constitution of the loop ensures that both rings undergo highly (85%) unidirectional movement under the guidance of a flashing energy ratchet7,8, whereas the interactions between the two rings give rise to a two-dimensional potential energy surface (PES) similar to that shown by FOF1 ATP synthase9. The unidirectionality is powered by an oscillating10 voltage11,12 or external modulation of the redox potential13. Initially, we focused our attention on the homologous [2]catenane, only to find that the kinetic asymmetry was insufficient to support unidirectional movement of the sole ring. Accordingly, we incorporated a second CBPQT4+ ring to provide further symmetry breaking by interactions between the two mobile rings. This demonstration of electrically driven continual circumrotatory motion of two rings around a loop in a [3]catenane is free from the production of waste products and represents an important step towards surface-bound14 electric molecular motors.
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50
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Pfeifer L, Hoang NV, Crespi S, Pshenichnikov MS, Feringa BL. Dual-function artificial molecular motors performing rotation and photoluminescence. SCIENCE ADVANCES 2022; 8:eadd0410. [PMID: 36332022 PMCID: PMC9635830 DOI: 10.1126/sciadv.add0410] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Accepted: 09/19/2022] [Indexed: 06/16/2023]
Abstract
Molecular machines have caused one of the greatest paradigm shifts in chemistry, and by powering artificial mechanical molecular systems and enabling autonomous motion, they are expected to be at the heart of exciting new technologies. One of the biggest challenges that still needs to be addressed is designing the involved molecules to combine different orthogonally controllable functions. Here, we present a prototype of artificial molecular motors exhibiting the dual function of rotary motion and photoluminescence. Both properties are controlled by light of different wavelengths or by exploiting motors' outstanding two-photon absorption properties using low-intensity near-infrared light. This provides a noninvasive way to both locate and operate these motors in situ, essential for the application of molecular machines in complex (bio)environments.
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Affiliation(s)
- Lukas Pfeifer
- Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747 AG Groningen, Netherlands
| | - Nong V. Hoang
- Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG Groningen, Netherlands
| | - Stefano Crespi
- Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747 AG Groningen, Netherlands
| | - Maxim S. Pshenichnikov
- Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG Groningen, Netherlands
| | - Ben L. Feringa
- Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747 AG Groningen, Netherlands
- Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG Groningen, Netherlands
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