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Molliet A, Doninelli S, Hong L, Tran B, Debas M, Salentinig S, Kilbinger AFM, Casalini T. Solvent Dependent Folding of an Amphiphilic Polyaramid. J Am Chem Soc 2023; 145:27830-27837. [PMID: 38084077 DOI: 10.1021/jacs.3c11026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2023]
Abstract
A series of synthetic alternating and amphiphilic aromatic amide polymers were synthesized by a step growth polymerization. Alternating meta- and para-linkages were introduced to force the polymer chain into a helical shape in the highly polar solvent water. The polymers were analyzed by 1H NMR spectroscopy and SEC in polar aprotic solvents such as DMSO and DMF. However, the polymers also showed good solubility in water. 1H NMR spectroscopy, small-angle X-ray scattering, and dynamic light scattering provided clear evidence of polymer folding in water but not DMF. We employed parallel tempering metadynamics in the well-tempered ensemble (PTMetaD-WTE) to simulate the free energy surfaces of an analogous model polymer in DMF and water. The simulations gave a molecular model of an unfolded structure in DMF and a helically folded tubular structure in water.
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Affiliation(s)
- Angélique Molliet
- Department of Chemistry, University of Fribourg, Chemin du Musée 9, CH-1700 Fribourg, Switzerland
| | - Samantha Doninelli
- Department of Chemistry, University of Fribourg, Chemin du Musée 9, CH-1700 Fribourg, Switzerland
| | - Linda Hong
- Department of Chemistry, University of Fribourg, Chemin du Musée 9, CH-1700 Fribourg, Switzerland
| | - Bettina Tran
- Department of Chemistry, University of Fribourg, Chemin du Musée 9, CH-1700 Fribourg, Switzerland
| | - Meron Debas
- Department of Chemistry, University of Fribourg, Chemin du Musée 9, CH-1700 Fribourg, Switzerland
| | - Stefan Salentinig
- Department of Chemistry, University of Fribourg, Chemin du Musée 9, CH-1700 Fribourg, Switzerland
| | - Andreas F M Kilbinger
- Department of Chemistry, University of Fribourg, Chemin du Musée 9, CH-1700 Fribourg, Switzerland
| | - Tommaso Casalini
- Department of Chemistry and Applied Bioscience, Institute for Chemical and Bioengineering, ETH Zurich, Vladimir-Prelog-Weg 1-5/10, Zürich 8093, Switzerland
- Polymer Engineering Laboratory, Institute for Mechanical Engineering and Materials Technology, University of Applied Sciences and Arts of Southern Switzerland (SUPSI), Via la Santa 1, Lugano 6962, Switzerland
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2
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Min J, Wang C, Wang L. A new method for detecting intramolecular H-bonds of aromatic amides based on the de-shielding effect of carbonyl groups on β-protons. Phys Chem Chem Phys 2021; 23:13284-13291. [PMID: 34095931 DOI: 10.1039/d1cp01089a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Aromatic amide foldamers with highly predictable conformations possess potential for application in the fields of stereoselective recognition, charge transport and catalysis, whose conformations are commonly limited by the intramolecular hydrogen bonding between amide groups and hydrogen-bonding receptors. Herein, on the basis of the de-shielding effect of carbonyl groups on β-protons, we develop a new method for detecting intramolecular hydrogen bonds of aromatic amide compounds. The solvent-related changes in the βH chemical shifts (Δ(δβH)) and NH chemical shifts (Δ(δNH)) of three kinds of amide compounds, which are frequently used as building blocks of aromatic amide foldamers, were recorded in chloroform, nitromethane, acetonitrile and DMSO. The Δ(δβH) method is found to be highly suitable for studying methoxy-benzamides and fluoro-benzamides in chloroform and DMSO. It is worth noting that a reference compound is not required for applying the Δ(δβH) method, which is an advantage over the Δ(δNH) method. In addition, we extend the Δ(δNH) method from methoxy-benzamides to pyridine-carboxamides and fluoro-benzamides in chloroform and DMSO, and propose that nitromethane and acetonitrile will be possible alternatives for the Δ(δNH) method if a test compound is not soluble in chloroform.
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Affiliation(s)
- Jing Min
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, China.
| | - Chunyu Wang
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, China.
| | - Liyan Wang
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, China.
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Long JW, Chen L, Liu BW, Shi XH, Lin XB, Li YM, Wang YZ. Tuning the Pendent Groups of Semiaromatic Polyamides toward High Performance. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c00578] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Jia-Wei Long
- The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials (MoE), National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), State Key Laboratory of Polymer Materials Engineering, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Li Chen
- The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials (MoE), National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), State Key Laboratory of Polymer Materials Engineering, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Bo-Wen Liu
- The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials (MoE), National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), State Key Laboratory of Polymer Materials Engineering, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Xiao-Hui Shi
- The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials (MoE), National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), State Key Laboratory of Polymer Materials Engineering, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Xue-Bao Lin
- The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials (MoE), National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), State Key Laboratory of Polymer Materials Engineering, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Ying-Ming Li
- The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials (MoE), National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), State Key Laboratory of Polymer Materials Engineering, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Yu-Zhong Wang
- The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials (MoE), National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), State Key Laboratory of Polymer Materials Engineering, College of Chemistry, Sichuan University, Chengdu 610064, China
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Liu CZ, Yan M, Wang H, Zhang DW, Li ZT. Making Molecular and Macromolecular Helical Tubes: Covalent and Noncovalent Approaches. ACS OMEGA 2018; 3:5165-5176. [PMID: 31458731 PMCID: PMC6641876 DOI: 10.1021/acsomega.8b00681] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2018] [Accepted: 04/30/2018] [Indexed: 05/21/2023]
Abstract
Aromatic foldamers possess well-defined cavity that can be stabilized by discrete intramolecular interactions including hydrogen bonding, solvophobicity, electrostatic repulsion, or coordination. Long foldamers can form dynamic deep helical tubular architectures that are not only structurally attractive but also useful hosts for guest encapsulation, chirality induction, delivery, and catalysis. This kind of helical tubular structures can be formed by single molecules or macromolecules or by connecting short-folded or helical segments through noncovalent or covalent forces. This perspective summarizes the recent advances on the construction of helical tubes and their properties and functions.
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Affiliation(s)
- Chuan-Zhi Liu
- Department
of Chemistry, Shanghai Key Laboratory of Molecular Catalysis and
Innovative Materials, andCollaborative Innovation Centre of Chemistry for Energy
Materials (iChEM), Fudan University, 2205 Songhu Road, Shanghai 200438, China
| | - Meng Yan
- Department
of Chemistry, Shanghai Key Laboratory of Molecular Catalysis and
Innovative Materials, andCollaborative Innovation Centre of Chemistry for Energy
Materials (iChEM), Fudan University, 2205 Songhu Road, Shanghai 200438, China
| | - Hui Wang
- Department
of Chemistry, Shanghai Key Laboratory of Molecular Catalysis and
Innovative Materials, andCollaborative Innovation Centre of Chemistry for Energy
Materials (iChEM), Fudan University, 2205 Songhu Road, Shanghai 200438, China
| | - Dan-Wei Zhang
- Department
of Chemistry, Shanghai Key Laboratory of Molecular Catalysis and
Innovative Materials, andCollaborative Innovation Centre of Chemistry for Energy
Materials (iChEM), Fudan University, 2205 Songhu Road, Shanghai 200438, China
- E-mail: (D.-W.Z.)
| | - Zhan-Ting Li
- Department
of Chemistry, Shanghai Key Laboratory of Molecular Catalysis and
Innovative Materials, andCollaborative Innovation Centre of Chemistry for Energy
Materials (iChEM), Fudan University, 2205 Songhu Road, Shanghai 200438, China
- E-mail: (Z.-T.L.)
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Zhao D, Yang L, Yuan Y, Wang H, Dong H, Li S. Molecular Mechanism of Self-Assembly of Aromatic Oligoamides into Interlocked Double-Helix Foldamers. J Phys Chem B 2017; 121:10064-10072. [PMID: 29019673 DOI: 10.1021/acs.jpcb.7b09067] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Foldamer, inspired by the structures and functions of biopolymers, is defined as an artificial molecular architecture that can fold into a three-dimensional structure in solution and has been a growing and active field in supramolecular chemistry. The central issue in foldamer science is to understand how the primary sequence of oligomer folds into conformationally ordered structures as well as how individual subunits self-associate into assembly. For duplex structures, these two issues are always interrelated and inseparable with each other. Although the emergence of new foldamer keeps growing, the detailed mechanism remains elusive. On the basis of an artificially synthesized arylamide oligoamide foldamer with its crystal structure available, we constructed a set of four foldamers with a similar backbone but different substituents and aimed at dissecting the folding and self-association mechanisms of a double-helical foldamer with computations. Using molecular simulations at a microsecond time scale, we observed very consistent processes of the spontaneous self-assembly of two single-helical motifs into an entwined complex. Our results reveal that aggregation of two single-helical motifs driven by extensive π-π interactions is energetically favorable and that this spontaneous self-assembly proceeds through an "unwinding-threading-rewinding" mechanism. The detailed mechanisms about the folding and self-assembly in an aromatic oligoamide foldamer we present here disclose how the sequence is associated with a well-ordered three-dimensional structure at atomic level and therefore may have implications for designing new foldamers with versatile functions.
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Affiliation(s)
| | - Ling Yang
- CAS Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190, People's Republic of China
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Zhang DW, Wang H, Li ZT. Polymeric Tubular Aromatic Amide Helices. Macromol Rapid Commun 2017; 38. [DOI: 10.1002/marc.201700179] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2017] [Revised: 04/10/2017] [Indexed: 12/15/2022]
Affiliation(s)
- Dan-Wei Zhang
- Department of Chemistry; Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials; Collaborative Innovation Center of Chemistry for Energy Materials (iChEM); Fudan University; Shanghai 200433 China
| | - Hui Wang
- Department of Chemistry; Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials; Collaborative Innovation Center of Chemistry for Energy Materials (iChEM); Fudan University; Shanghai 200433 China
| | - Zhan-Ting Li
- Department of Chemistry; Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials; Collaborative Innovation Center of Chemistry for Energy Materials (iChEM); Fudan University; Shanghai 200433 China
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Tian J, Wang H, Zhang DW, Liu Y, Li ZT. Supramolecular organic frameworks (SOFs): homogeneous regular 2D and 3D pores in water. Natl Sci Rev 2017. [DOI: 10.1093/nsr/nwx030] [Citation(s) in RCA: 78] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
Abstract
Studies on periodic porosity and related properties and functions have been limited to insoluble solid-state materials. Self-assembly provides a straightforward and efficient strategy for the construction of soluble periodic porous supramolecular organic frameworks (SOFs) in water from rationally designed molecular building blocks. From rigid tri- and tetra-armed building blocks and cucurbitu[8]ril (CB[8]), a number of two-dimensional (2D) honeycomb, square and rhombic SOFs can be generated, which is driven by CB[8]-encapsulation-enhanced dimerization of two aromatic units on the periphery of the multi-armed molecules. By utilizing the same three-component host−guest motif as the driving force, three-dimensional (3D) diamondoid and cubic SOFs can be obtained from tetrahedral and [Ru(bipy)3]2+-derived octahedral monomers and CB[8]. All of the 2D and 3D periodic frameworks are soluble in water, and are able to maintain the periodicity as well as the pore sizes in the solid state. 3D SOFs are highly efficient homogeneous polycationic frameworks for reversible adsorption of anionic species including organic dyes, peptides, nucleic acids, drugs, dendrimers and Wells-Dawson-typed polyoxametallates (WD-POMs). WD-POM molecules adsorbed in the [Ru(bipy)3]2+-based SOF can catalyse the reduction of proton to H2 upon visible-light sensitization of [Ru(bipy)3]2+, which allows multiple electron transfer from [Ru(bipy)3]2+ to WD-POM. This review summarizes the design, formation and characterization of this new family of self-assembled frameworks, highlights their applications as homogeneous porous materials and finally outlines some future research directions.
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Affiliation(s)
- Jia Tian
- Department of Chemistry, Collaborative Innovation Centre of Chemistry for Energy Materials (iChEM), Fudan University, Shanghai 200433, China
| | - Hui Wang
- Department of Chemistry, Collaborative Innovation Centre of Chemistry for Energy Materials (iChEM), Fudan University, Shanghai 200433, China
| | - Dan-Wei Zhang
- Department of Chemistry, Collaborative Innovation Centre of Chemistry for Energy Materials (iChEM), Fudan University, Shanghai 200433, China
| | - Yi Liu
- The Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Zhan-Ting Li
- Department of Chemistry, Collaborative Innovation Centre of Chemistry for Energy Materials (iChEM), Fudan University, Shanghai 200433, China
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Abstract
Nature makes use of tubular structures for the spatial separation of matter on many different length scales, ranging from the nanometer scale (selective channels based on folded proteins) up to the centimeter scale (blood vessels). Today, polymer chemists and engineers can prepare polymeric tubular structures via a variety of different methods also covering many lengthscales, from nanometers to meters. The synthetic approaches described in this chapter vary significantly from the folding of single polymer chains via the self-assembly of DNA fragments to coordinative metal-organic nanotubes to tubes engineerd from bulk polymers using a range of porous or fibrous templates. While all examples reported in this chapter form tubular structures and thereby mimic their naturally occuring counterparts, it is mainly the engineered tubes that are more straightforward to prepare that also show some bio-inspired function.
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Affiliation(s)
- Samantha Doninelli
- Department of Chemistry, University of Fribourg Chemin du Musée 9 CH-1700 Fribourg Switzerland
| | - Michael Badoux
- Department of Chemistry, University of Fribourg Chemin du Musée 9 CH-1700 Fribourg Switzerland
| | - Andreas F. M. Kilbinger
- Department of Chemistry, University of Fribourg Chemin du Musée 9 CH-1700 Fribourg Switzerland
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9
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Hydrophobically driven chiral column aggregates of hydrazide macrocycles and side chains-controlled chirality conversion. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.06.090] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Zhang P, Zhang L, Wang ZK, Zhang YC, Guo R, Wang H, Zhang DW, Li ZT. Guest-Induced Arylamide Polymer Helicity: Twist-Sense Bias and Solvent-Dependent Helicity Inversion. Chem Asian J 2016; 11:1725-30. [DOI: 10.1002/asia.201600289] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2016] [Indexed: 01/07/2023]
Affiliation(s)
- Peng Zhang
- Department of Chemistry, Collaborative Innovation Centre of Chemistry for Energy Materials (iChEM); Fudan University; 220 Handan Road Shanghai 200433 China
| | - Liang Zhang
- Department of Chemistry, Collaborative Innovation Centre of Chemistry for Energy Materials (iChEM); Fudan University; 220 Handan Road Shanghai 200433 China
| | - Ze-Kun Wang
- Department of Chemistry, Collaborative Innovation Centre of Chemistry for Energy Materials (iChEM); Fudan University; 220 Handan Road Shanghai 200433 China
| | - Yun-Chang Zhang
- Department of Chemistry, Collaborative Innovation Centre of Chemistry for Energy Materials (iChEM); Fudan University; 220 Handan Road Shanghai 200433 China
| | - Rong Guo
- Department of Chemistry, Collaborative Innovation Centre of Chemistry for Energy Materials (iChEM); Fudan University; 220 Handan Road Shanghai 200433 China
| | - Hui Wang
- Department of Chemistry, Collaborative Innovation Centre of Chemistry for Energy Materials (iChEM); Fudan University; 220 Handan Road Shanghai 200433 China
| | - Dan-Wei Zhang
- Department of Chemistry, Collaborative Innovation Centre of Chemistry for Energy Materials (iChEM); Fudan University; 220 Handan Road Shanghai 200433 China
| | - Zhan-Ting Li
- Department of Chemistry, Collaborative Innovation Centre of Chemistry for Energy Materials (iChEM); Fudan University; 220 Handan Road Shanghai 200433 China
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Zhang P, Wang Z, Zhang L, Wang H, Zhang D, Hou J, Li Z. Aromatic Amide Polymers that Form Two Helical Conformations with Twist Sense Bias in Water. CHINESE J CHEM 2016. [DOI: 10.1002/cjoc.201600140] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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