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Wen X, Wang F, Du S, Jiang Y, Zhang L, Liu M. Achiral Solvent Inversed Helical Pathway and Cosolvent Controlled Excited-State "Majority Rule" in Enantiomeric Dansulfonamide Assemblies. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024:e2401954. [PMID: 38733233 DOI: 10.1002/smll.202401954] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2024] [Revised: 04/26/2024] [Indexed: 05/13/2024]
Abstract
Achiral solvents are commonly utilized to induce the self-assembly of chiral molecules. This study demonstrates that achiral solvents can trigger helicity inversion in the assemblies of dansyl amphiphiles and control the excited-state "majority rule" in assemblies composed of pure enantiomers, through variation of the cosolvent ratio. Specifically, enantiomers of dansyl amphiphiles self-assemble into helical structures with opposite handedness in methanol (MeOH) and acetonitrile (MeCN), together with inversed circular dichroism and circularly polarized luminescence (CPL) signals. When a mixture of MeOH and MeCN is employed, the achiral cosolvents collectively affect the CPL of the assemblies in a way similar to that of "mixed enantiomers". The dominant cosolvent governs the CPL signal. As the cosolvent composition shifts from pure MeCN to MeOH, the CPL signals undergo a significant inversion and amplification, with two maxima observed at ≈20% MeOH and 20% MeCN. This study deepens the comprehension of how achiral solvents modulate helical nanostructures and their excited-state chiroptical properties.
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Affiliation(s)
- Xin Wen
- Key Laboratory of Colloid, Interface and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences (CAS), ZhongGuanCun North First Street 2, Beijing, 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Fulin Wang
- Key Laboratory of Colloid, Interface and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences (CAS), ZhongGuanCun North First Street 2, Beijing, 100190, P. R. China
| | - Sifan Du
- Key Laboratory of Colloid, Interface and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences (CAS), ZhongGuanCun North First Street 2, Beijing, 100190, P. R. China
| | - Yuqian Jiang
- Laboratory of Nanosystem and Hierarchical Fabrication, National Center for Nanoscience and Technology, Beijing, 100190, P. R. China
| | - Li Zhang
- Key Laboratory of Colloid, Interface and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences (CAS), ZhongGuanCun North First Street 2, Beijing, 100190, P. R. China
| | - Minghua Liu
- Key Laboratory of Colloid, Interface and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences (CAS), ZhongGuanCun North First Street 2, Beijing, 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
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2
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Shao BR, Ren BH, Jiang WF, Shi L. Synthesis of Helical-Shaped Axially Chiral Bisoxime Ethers via Chiral Phosphoric-Acid-Catalyzed Sequential Enantioselective Condensations. Org Lett 2024; 26:2646-2650. [PMID: 38530907 DOI: 10.1021/acs.orglett.4c00722] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/28/2024]
Abstract
A successful synthesis of helical-shaped axially chiral bisoxime ethers is reported. This approach utilized symmetric L-shaped diketone scaffolds as carbonyl components for the enantioselective condensation with hydroxylamines, delivering dual axially chiral oxime ethers with up to 99% ee. Additionally, the axially chiral mono-oxime ethers of azabicyclic ketones with high ee's were also successfully produced. Various chiral bicyclic lactams can be readily synthesized via Beckmann rearrangement, demonstrating a potential application in organic synthetic chemistry.
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Affiliation(s)
- Bing-Ru Shao
- School of Chemistry, Dalian University of Technology, Dalian 116024, P. R. China
| | - Bai-Hao Ren
- School of Chemistry, Dalian University of Technology, Dalian 116024, P. R. China
| | - Wen-Feng Jiang
- School of Chemistry, Dalian University of Technology, Dalian 116024, P. R. China
| | - Lei Shi
- School of Chemistry, Dalian University of Technology, Dalian 116024, P. R. China
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3
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Sallembien Q, Aoun P, Blanchard S, Bouteiller L, Raynal M. Interplay Between Hydrogen Bonding and Electron Transfer in Mixed Valence Assemblies of Triarylamine Trisamides. Chemistry 2023; 29:e202203199. [PMID: 36394123 PMCID: PMC10107863 DOI: 10.1002/chem.202203199] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2022] [Revised: 11/16/2022] [Accepted: 11/17/2022] [Indexed: 11/18/2022]
Abstract
Hydrogen-bonding interactions are assumed to play a critical role in the long-range transport of light or charge recently observed in supramolecular assemblies of C3 -symmetrical discotic molecules. Herein, the structure of mixed valence assemblies formed by irradiating triarylamine trisamide (TATA) molecules was determined by multifarious techniques under various conditions with the aim of probing the interplay between the hydrogen bonding network and the rate of electron transport in different states (solution, gel, film). Irradiation was performed under initial states that vary by the degree of association of TATA monomers through hydrogen bonds. Firstly, a significant shift of the N-H and C=O stretching frequencies was observed by FTIR upon irradiation thus revealing an overlooked signature of TATA⋅+ species and interacting mixed valence aggregates. Secondly, gels and films both mostly consist of hydrogen-bonded TATA polymers but their EPR spectra recorded at 293 K reveal very different behaviors: localized electrons in the gels versus fully delocalized electrons in the films. Hydrogen bonding thus appears as a necessary but not sufficient condition to get fast electron transfer rates and a packing of the TATA monomers particularly suitable for charge transport is assumed to exist in the solid state. Finally, defects in the hydrogen bonding network are detected upon increasing the number of radical species in the mixed valence assemblies present in the film state without impeding the delocalization of the unpaired electrons. A delicate balance between hydrogen bonds and packing is thus necessary to get supramolecular polarons in mixed valence TATA assemblies.
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Affiliation(s)
- Quentin Sallembien
- Institut Parisien de Chimie Moléculaire, Equipe Chimie des Polymères, Sorbonne Université, CNRS, 4 Place Jussieu, 75005, Paris, France
| | - Paméla Aoun
- Institut Parisien de Chimie Moléculaire, Equipe Chimie des Polymères, Sorbonne Université, CNRS, 4 Place Jussieu, 75005, Paris, France
| | - Sébastien Blanchard
- Institut Parisien de Chimie Moléculaire, Equipe Edifices Polymétalliques, Sorbonne Université, CNRS, 4 Place Jussieu, 75005, Paris, France
| | - Laurent Bouteiller
- Institut Parisien de Chimie Moléculaire, Equipe Chimie des Polymères, Sorbonne Université, CNRS, 4 Place Jussieu, 75005, Paris, France
| | - Matthieu Raynal
- Institut Parisien de Chimie Moléculaire, Equipe Chimie des Polymères, Sorbonne Université, CNRS, 4 Place Jussieu, 75005, Paris, France
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4
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Mabesoone MJ, Palmans ARA, Meijer EW. Solute-Solvent Interactions in Modern Physical Organic Chemistry: Supramolecular Polymers as a Muse. J Am Chem Soc 2020; 142:19781-19798. [PMID: 33174741 PMCID: PMC7705892 DOI: 10.1021/jacs.0c09293] [Citation(s) in RCA: 86] [Impact Index Per Article: 21.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2020] [Indexed: 12/14/2022]
Abstract
Interactions between solvents and solutes are a cornerstone of physical organic chemistry and have been the subject of investigations over the last century. In recent years, a renewed interest in fundamental aspects of solute-solvent interactions has been sparked in the field of supramolecular chemistry in general and that of supramolecular polymers in particular. Although solvent effects in supramolecular chemistry have been recognized for a long time, the unique opportunities that supramolecular polymers offer to gain insight into solute-solvent interactions have become clear relatively recently. The multiple interactions that hold the supramolecular polymeric structure together are similar in strength to those between solute and solvent. The cooperativity found in ordered supramolecular polymers leads to the possibility of amplifying these solute-solvent effects and will shed light on extremely subtle solvation phenomena. As a result, many exciting effects of solute-solvent interactions in modern physical organic chemistry can be studied using supramolecular polymers. Our aim is to put the recent progress into a historical context and provide avenues toward a more comprehensive understanding of solvents in multicomponent supramolecular systems.
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Affiliation(s)
- Mathijs
F. J. Mabesoone
- Institute
for Complex Molecular Systems and the Laboratory of Macromolecular
and Organic Chemistry, Eindhoven University
of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Anja R. A. Palmans
- Institute
for Complex Molecular Systems and the Laboratory of Macromolecular
and Organic Chemistry, Eindhoven University
of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - E. W. Meijer
- Institute
for Complex Molecular Systems and the Laboratory of Macromolecular
and Organic Chemistry, Eindhoven University
of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
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5
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Falcone N, Shao T, Andoy NMO, Rashid R, Sullan RMA, Sun X, Kraatz HB. Multi-component peptide hydrogels - a systematic study incorporating biomolecules for the exploration of diverse, tuneable biomaterials. Biomater Sci 2020; 8:5601-5614. [PMID: 32832942 DOI: 10.1039/d0bm01104e] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Peptide-based supramolecular gels can be designed to be functional "smart" materials that have applications in drug delivery, tissue engineering, and supramolecular chemistry. Although many multi-component gel systems have been designed and reported, many of these applications still rely solely on single-component gel systems which limits the functionalities of the materials. Multi-component self-assembly leads to the formation of highly ordered and complex architectures while offering the possibility to generate hydrogels with interesting properties including functional complexity and diverse morphologies. Being able to incorporate various classes of biomolecules can allow for tailoring the materials' functionalities to specific application needs. Here, a novel peptide amphiphile, myristyl-Phe-Phe (C14-FF), was synthesized and explored for hydrogel formation. The hydrogel possesses a nanofiber matrix morphology, composed of β-sheet aggregates, a record-low gelation concentration for this class of compounds, and a unique solvent-dependent helical switch. The C14-FF hydrogel was then explored with various classes of biomolecules (carbohydrates, vitamins, proteins, building blocks of HA) to generate a multi-component library of gels that have potential to represent the complex natural extracellular matrix. Selected multi-component gels exhibit an excellent compatibility with mesenchymal stem cells showing high cell viability percentages, which holds great promise for applications in regenerative therapy.
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Affiliation(s)
- Natashya Falcone
- Department of Chemical Engineering and Applied Chemistry, University of Toronto, 200 College Street, Toronto, ON M5S 3E5, Canada.
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6
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Choi YJ, Jung D, Lim SI, Yoon WJ, Kim DY, Jeong KU. Diacetylene-Functionalized Dendrons: Self-Assembled and Photopolymerized Three-Dimensional Networks for Advanced Self-Healing and Wringing Soft Materials. ACS APPLIED MATERIALS & INTERFACES 2020; 12:33239-33245. [PMID: 32602691 DOI: 10.1021/acsami.0c08137] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The physical properties of supramolecular soft materials strongly depend on the molecular packing structures constructed by thermodynamically and kinetically controlled molecular self-assembly. To investigate the relationship between molecular function and self-assembled molecular packing structure, a series of diacetylene (DA)-based supramolecules was synthesized by chemically connecting flexible dendrons to DA with amide (aDA-D) or ester (eDA-D) functions. The three-dimensional (3D) organogel network of amide-functionalized aDA-D was prepared in both polar and nonpolar solvents due to the intermolecular hydrogen bonding. 3D networks of aDA-D can be further stabilized by topochemical photopolymerization. The self-healing behavior of aDA-D was observed in the sheet-like structure formed in n-dodecane by the hydrophobic interaction between the gelator and solvent. The wringing behavior of aDA-D was also demonstrated using the dynamic interaction of amide function with n-butanol solvent. Kinetically controlled and photostabilized 3D networks can be a key component from biomedical devices to soft robotic applications.
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Affiliation(s)
- Yu-Jin Choi
- Department of Polymer-Nano Science and Technology, Department of Nanoconvergence Engineering, Jeonbuk National University, Jeonju 54896, Republic of Korea
| | - Daseal Jung
- Department of Polymer-Nano Science and Technology, Department of Nanoconvergence Engineering, Jeonbuk National University, Jeonju 54896, Republic of Korea
| | - Seok-In Lim
- Department of Polymer-Nano Science and Technology, Department of Nanoconvergence Engineering, Jeonbuk National University, Jeonju 54896, Republic of Korea
| | - Won-Jin Yoon
- Department of Polymer-Nano Science and Technology, Department of Nanoconvergence Engineering, Jeonbuk National University, Jeonju 54896, Republic of Korea
| | - Dae-Yoon Kim
- Functional Composite Materials Research Center, Korea Institute of Science and Technology, Bongdong 55324, Republic of Korea
| | - Kwang-Un Jeong
- Department of Polymer-Nano Science and Technology, Department of Nanoconvergence Engineering, Jeonbuk National University, Jeonju 54896, Republic of Korea
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7
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Kim KY, Ok M, Kim J, Jung SH, Seo ML, Jung JH. Pyrene-Based Co-Assembled Supramolecular Gel; Morphology Changes and Macroscale Mechanical Property. Gels 2020; 6:gels6020016. [PMID: 32429228 PMCID: PMC7345282 DOI: 10.3390/gels6020016] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2020] [Revised: 05/02/2020] [Accepted: 05/05/2020] [Indexed: 12/12/2022] Open
Abstract
Two pyrene derivatives having the perylenediimide (1) or the alky chain (2) in the middle of molecules were synthesized. Co-assembled supramolecular gels were prepared at different molar ratios of 0.2, 0.5, and 0.8 equiv. of 2 to 1. By SEM observation, the morphology of co-assembled supramolecular gels changed from spherical nanoparticles to three-dimensional network nanofibers as the ratio of 2 increased. In addition, the pyrene-excimer emission of co-assembled gels increased with increasing concentration of 2, and was stronger when compared with the condition without 1 or 2, indicating the formation of pyrene interaction between 1 and 2. In addition, the sol-gel transition was found to be reversible over repeated measurement by tube inversion method. The rheological properties of co-assembled supramolecular gels were also improved by increasing the ratio of 2, due to the increased nanoscale flexibility of supramolecular packing by introducing alkyl chain groups through heterogeneous pyrene interaction. These findings suggest that macroscale mechanical strength of co-assembled supramolecular gel was strongly influenced by nanoscale flexibility of the supramolecular packing.
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Affiliation(s)
- Ka Young Kim
- Department of Chemistry and Research Institute of Natural Sciences, Gyeongsang National University, Jinju 52828, Korea; (K.Y.K.); (M.O.); (J.K.)
| | - Mirae Ok
- Department of Chemistry and Research Institute of Natural Sciences, Gyeongsang National University, Jinju 52828, Korea; (K.Y.K.); (M.O.); (J.K.)
| | - Jaehyeong Kim
- Department of Chemistry and Research Institute of Natural Sciences, Gyeongsang National University, Jinju 52828, Korea; (K.Y.K.); (M.O.); (J.K.)
| | - Sung Ho Jung
- Department of Liberal Arts, Gyeongnam National University of Science and Technology (GNTECH), Jinju 52725, Korea;
| | - Moo Lyong Seo
- Department of Chemistry and Research Institute of Natural Sciences, Gyeongsang National University, Jinju 52828, Korea; (K.Y.K.); (M.O.); (J.K.)
- Correspondence: (M.L.S.); (J.H.J.); Tel.: +82-55-772-1488 (J.H.J.)
| | - Jong Hwa Jung
- Department of Chemistry and Research Institute of Natural Sciences, Gyeongsang National University, Jinju 52828, Korea; (K.Y.K.); (M.O.); (J.K.)
- Correspondence: (M.L.S.); (J.H.J.); Tel.: +82-55-772-1488 (J.H.J.)
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8
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Liang T, Collin D, Galerne M, Fuks G, Vargas Jentzsch A, Maaloum M, Carvalho A, Giuseppone N, Moulin E. Covalently Trapped Triarylamine-Based Supramolecular Polymers. Chemistry 2019; 25:14341-14348. [PMID: 31436358 DOI: 10.1002/chem.201902404] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2019] [Indexed: 11/07/2022]
Abstract
C3 -Symmetric triarylamine trisamides (TATAs), decorated with three norbornene end groups, undergo supramolecular polymerization and further gelation by π-π stacking and hydrogen bonding of their TATA cores. By using subsequent ring-opening metathesis polymerization, these physical gels are permanently crosslinked into chemical gels. Detailed comparisons of the supramolecular stacks in solution, in the physical gel, and in the chemical gel states, are performed by optical spectroscopies, electronic spectroscopies, atomic force microscopy, electronic paramagnetic resonance spectroscopy, X-ray scattering, electronic transport measurements, and rheology. The results presented here clearly evidence that the core structure of the functional supramolecular polymers can be precisely retained during the covalent capture whereas the mechanical properties of the gels are concomitantly improved, with an increase of their storage modulus by two orders of magnitude.
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Affiliation(s)
- Ting Liang
- SAMS Research Group, Institut Charles Sadron, CNRS-UPR 22, University of Strasbourg, 23 rue du Loess, BP 84047, 67034, Strasbourg Cedex 2, France
| | - Dominique Collin
- Institut Charles Sadron, CNRS-UPR 22, 23 rue du Loess, BP 84047, 67034, Strasbourg Cedex 2, France
| | - Melodie Galerne
- SAMS Research Group, Institut Charles Sadron, CNRS-UPR 22, University of Strasbourg, 23 rue du Loess, BP 84047, 67034, Strasbourg Cedex 2, France
| | - Gad Fuks
- SAMS Research Group, Institut Charles Sadron, CNRS-UPR 22, University of Strasbourg, 23 rue du Loess, BP 84047, 67034, Strasbourg Cedex 2, France
| | - Andreas Vargas Jentzsch
- SAMS Research Group, Institut Charles Sadron, CNRS-UPR 22, University of Strasbourg, 23 rue du Loess, BP 84047, 67034, Strasbourg Cedex 2, France
| | - Mounir Maaloum
- SAMS Research Group, Institut Charles Sadron, CNRS-UPR 22, University of Strasbourg, 23 rue du Loess, BP 84047, 67034, Strasbourg Cedex 2, France
| | - Alain Carvalho
- Institut Charles Sadron, CNRS-UPR 22, 23 rue du Loess, BP 84047, 67034, Strasbourg Cedex 2, France
| | - Nicolas Giuseppone
- SAMS Research Group, Institut Charles Sadron, CNRS-UPR 22, University of Strasbourg, 23 rue du Loess, BP 84047, 67034, Strasbourg Cedex 2, France
| | - Emilie Moulin
- SAMS Research Group, Institut Charles Sadron, CNRS-UPR 22, University of Strasbourg, 23 rue du Loess, BP 84047, 67034, Strasbourg Cedex 2, France
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9
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Osypenko A, Moulin E, Gavat O, Fuks G, Maaloum M, Koenis MAJ, Buma WJ, Giuseppone N. Temperature Control of Sequential Nucleation–Growth Mechanisms in Hierarchical Supramolecular Polymers. Chemistry 2019; 25:13008-13016. [DOI: 10.1002/chem.201902898] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2019] [Indexed: 12/23/2022]
Affiliation(s)
- Artem Osypenko
- SAMS Research Group, University of Strasbourg–Institut Charles SadronCNRS 23 rue du Loess, BP 84047 67034 Strasbourg Cedex 2 France
| | - Emilie Moulin
- SAMS Research Group, University of Strasbourg–Institut Charles SadronCNRS 23 rue du Loess, BP 84047 67034 Strasbourg Cedex 2 France
| | - Odile Gavat
- SAMS Research Group, University of Strasbourg–Institut Charles SadronCNRS 23 rue du Loess, BP 84047 67034 Strasbourg Cedex 2 France
| | - Gad Fuks
- SAMS Research Group, University of Strasbourg–Institut Charles SadronCNRS 23 rue du Loess, BP 84047 67034 Strasbourg Cedex 2 France
| | - Mounir Maaloum
- SAMS Research Group, University of Strasbourg–Institut Charles SadronCNRS 23 rue du Loess, BP 84047 67034 Strasbourg Cedex 2 France
| | - Mark A. J. Koenis
- Van ‘t Hoff Institute for Molecular SciencesUniversity of Amsterdam Science Park 904 1098 XH Amsterdam The Netherlands
| | - Wybren Jan Buma
- Van ‘t Hoff Institute for Molecular SciencesUniversity of Amsterdam Science Park 904 1098 XH Amsterdam The Netherlands
- Institute for Molecules and Materials, FELIX LaboratoryRadboud University Toernooiveld 7c 6525 ED Nijmegen The Netherlands
| | - Nicolas Giuseppone
- SAMS Research Group, University of Strasbourg–Institut Charles SadronCNRS 23 rue du Loess, BP 84047 67034 Strasbourg Cedex 2 France
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10
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Moulin E, Armao JJ, Giuseppone N. Triarylamine-Based Supramolecular Polymers: Structures, Dynamics, and Functions. Acc Chem Res 2019; 52:975-983. [PMID: 30915835 DOI: 10.1021/acs.accounts.8b00536] [Citation(s) in RCA: 69] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Triarylamine molecules and triarylamine-based covalent polymers have been extensively investigated for more than 60 years in academics and industry because of their intriguing electronic and optical characteristics. However, despite the profusion of studies made on these derivatives, only very recently have the first examples of supramolecular polymers based on the triarylamine motif been described in the literature. Specifically, our research group has shown that, by adding supplementary hydrogen bonding moieties such as amide functions in their periphery, it becomes possible to tightly pack triarylamine molecules in columnar supramolecular stacks presenting a collinear arrangement of their central nitrogen atoms. These supramolecular polymers can self-assemble into various soft hierarchical structures such as helical fibers, nanorods, nanospheres, and nanoribbons in the sol and in the gel states, into liquid-crystalline mesophases, and into highly organized supramolecular frameworks and single crystals thereof. Interestingly, the associated supramolecular polymerization mechanism involves a nucleation step of high activation energy, which requires the flattening of the triarylamine core. Because of this singularity and although dependent on the precise chemical nature of the building blocks, it has been demonstrated that their supramolecular polymerization can be triggered by original tools, such as light irradiation or electrochemistry, and that it can display autocatalytic growth behaviors, remarkably strong amplifications of chirality, and complex and competing thermodynamic and kinetic self-assembly pathways. Further, from a functional point of view, it has been highlighted that a partial oxidation of the triarylamine molecules results in an enhanced through-space delocalization of the charge carriers along the π-π stacked supramolecular polymers, a feature that confers to these nanowires exceptional transport properties. Upon increasing the charge carrier concentration, the electronic nature of these soft materials can be switched from semiconducting to metallic behavior, and the presence of highly delocalized unpaired electrons in supramolecular polaronic band structures has been further exploited to implement plasmonic properties within subwavelength organic interconnects and microscopic optical waveguides. Finally, by making use of the unusual dynamics and functions of triarylamine-based nanostructures, it becomes possible to precisely address their self-construction within confined environments or within nano- and micrometer scale devices. This has been demonstrated for instance between nanoparticles and between electrodes, inside inorganic nanopores, and inside phospholipid bilayers, as well as at the liquid-liquid interface. Such a meeting point between bottom-up and top-down technologies is of high interest to envision further developments and applications for this entirely new class of supramolecular polymers, which combine a unique relationship between their structures, their dynamics, and their subsequent emerging functional properties.
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Affiliation(s)
- Emilie Moulin
- SAMS Research Group, University of Strasbourg, Institut Charles Sadron, CNRS, 23 rue du Loess, BP 84047, 67034 Cedex 2 Strasbourg, France
| | - Joseph J. Armao
- SAMS Research Group, University of Strasbourg, Institut Charles Sadron, CNRS, 23 rue du Loess, BP 84047, 67034 Cedex 2 Strasbourg, France
| | - Nicolas Giuseppone
- SAMS Research Group, University of Strasbourg, Institut Charles Sadron, CNRS, 23 rue du Loess, BP 84047, 67034 Cedex 2 Strasbourg, France
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