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Xu H, Ma CS, Yu CY, Tong F, Qu DH. Reversible Inversion of Circularly Polarized Luminescence in a Coassembly Supramolecular Structure with Achiral Sulforhodamine B Dyes. ACS APPLIED MATERIALS & INTERFACES 2023; 15:25201-25211. [PMID: 37014285 DOI: 10.1021/acsami.2c22349] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
The dynamic control of circularly polarized luminescence (CPL) has far-reaching significance in optoelectronics, information storage, and data encryption. Herein, we reported the reversible inversion of CPL in a coassembly supramolecular system consisting of chiral molecules L4, which contain two positively charged viologen units, and achiral ionic surfactant sodium dodecyl sulfate (SDS) by introducing achiral sulforhodamine B (SRB) dye molecules. The chirality of CPL in the coassemblies can be efficiently regulated and inverted by simply adjusting the amount of SRB. A series of experimental characterization, including optical spectroscopy, electron microscope, 1H NMR, and X-ray scattering measurements, suggested that SRB could coassemble with L4/SDS to establish a new stable L4/SDS/SRB supramolecular structure through electrostatic interactions. Moreover, the negative-sign CPL could revert to the positive-sign CPL if titanium dioxide (TiO2) nanoparticles were used to decompose SRB molecules. The evolution of the CPL inversion process could be cycled at least 5 times without a significant decline in CPL signals when SRB was refueled to the system. Our results provide a facile approach to dynamically regulating the handedness of CPL in a multiple-component supramolecular system via achiral species.
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Affiliation(s)
- Hui Xu
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Chang-Shun Ma
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Cheng-Yuan Yu
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Fei Tong
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Da-Hui Qu
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
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2
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Meng P, Brock A, Wang X, Xu Y, McMurtrie J, Xu J. Competition of Hydrogen Bonds and Coordinate Bonds Induces a Reversible Crystal Transformation. Inorg Chem 2022; 61:2086-2092. [PMID: 35050601 DOI: 10.1021/acs.inorgchem.1c03291] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Achieving reversible molecular crystal transformation between coordinate aggregates and hydrogen bonded assemblies has been a challenging task because coordinate bonds are generally much stronger than hydrogen bonds. Recently, we have reported the incorporation of silver ions into the cyanuric acid-melamine (CAM) network, resulting in the formation of a 1D coordination polymer (crystal 1) through forming the κ1N-Ag-κ2N coordination bonds. In this work, we find crystal 1 will undergo reversible transformation to hydrogen bonded coordinate units (crystal 2) through the breaking of coordinate chains and then the addition of CAM hydrogen bonding motifs into the framework. Crystal 2 presents a pseudohexagonal arrangement comprised of the κ1N-Ag-κ2N units connected by two sets of the triple hydrogen bonds, which extends two-dimensionally and stacks into a layer-structured crystal. Light was shed on the tautomerization of CA and M ligands associated with the crystal transformations using single crystal X-ray diffraction and infrared spectroscopy by analyzing the bond lengths and vibrations. We also highlight that photoluminescence can be a useful tool to probe the tautomer conversions of conjugated molecules. Furthermore, crystal 1 demonstrates high flexibility and can be bent over 180° and recover to its original shape after stress release. Crystal 2, on the contrary, is brittle and shows distinct mechanical anisotropy along different crystal orientations, as unveiled by nanoindentation measurements. The elastic modulus is well correlated with the chemical bonding strength along each orientation, and it is noteworthy that the contribution of the triple hydrogen bonds is comparable to that of the coordination bonds.
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Affiliation(s)
- Peng Meng
- School of Chemistry and Physics and Centre for Materials Science, Queensland University of Technology, Brisbane, Queensland 4000, Australia
| | - Aidan Brock
- School of Chemistry and Physics and Centre for Materials Science, Queensland University of Technology, Brisbane, Queensland 4000, Australia
| | - Xiaodong Wang
- Central Analytical Research Facility, Institute for Future Environments, Queensland University of Technology, Brisbane, Queensland 4000, Australia
| | - Yanan Xu
- Central Analytical Research Facility, Institute for Future Environments, Queensland University of Technology, Brisbane, Queensland 4000, Australia
| | - John McMurtrie
- School of Chemistry and Physics and Centre for Materials Science, Queensland University of Technology, Brisbane, Queensland 4000, Australia
| | - Jingsan Xu
- School of Chemistry and Physics and Centre for Materials Science, Queensland University of Technology, Brisbane, Queensland 4000, Australia
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Ayzac V, Dirany M, Raynal M, Isare B, Bouteiller L. Energetics of Competing Chiral Supramolecular Polymers. Chemistry 2021; 27:9627-9633. [PMID: 33871118 DOI: 10.1002/chem.202100645] [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: 02/19/2021] [Indexed: 11/06/2022]
Abstract
Chirality can have unexpected consequences including on properties other than spectroscopic. We show herein that a racemic mixture of bis-urea stereoisomers forms thermodynamically stable supramolecular polymers that result in a more viscous solution than for the pure stereoisomer. The origin of this macroscopic property was probed by characterizing the structure and stability of the assemblies. Both racemic and non-racemic bis-urea stereoisomers form two competing helical supramolecular polymers in solution: a double and a single helical structure at low and high temperature, respectively. The transition temperature between these assemblies, as probed by spectroscopic and calorimetric analyses, is strongly influenced by the composition (by up to 70 °C). A simple model that accounts for the thermodynamics of this system, indicates that the stereochemical defects (chiral mismatches and helix reversals) affect much more the stability of single helices. Therefore, the heterochiral double helical structure predominates over the single helical structure (whilst the opposite holds for the homochiral structures), which explains the aforementioned higher viscosity of the racemic bis-urea solution. This rationale constitutes a new basis to tune the macroscopic properties of the increasing number of supramolecular polymers reported to exhibit competing chiral nanostructures.
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Affiliation(s)
- Virgile Ayzac
- CNRS, Institut Parisien de Chimie Moléculaire (IPCM), Equipe Chimie des Polymères, Sorbonne Université, 75005, Paris, France
| | - Mohammed Dirany
- CNRS, Institut Parisien de Chimie Moléculaire (IPCM), Equipe Chimie des Polymères, Sorbonne Université, 75005, Paris, France
| | - Matthieu Raynal
- CNRS, Institut Parisien de Chimie Moléculaire (IPCM), Equipe Chimie des Polymères, Sorbonne Université, 75005, Paris, France
| | - Benjamin Isare
- CNRS, Institut Parisien de Chimie Moléculaire (IPCM), Equipe Chimie des Polymères, Sorbonne Université, 75005, Paris, France
| | - Laurent Bouteiller
- CNRS, Institut Parisien de Chimie Moléculaire (IPCM), Equipe Chimie des Polymères, Sorbonne Université, 75005, Paris, France
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4
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Zhou C, Xu Q, Ren Y, Sun X, Xu Z, Han J, Guo R. Benzoate ester as a new species for supramolecular chiral assembly. SOFT MATTER 2021; 17:5137-5147. [PMID: 33881132 DOI: 10.1039/d1sm00188d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
In this work, a benzoate ester molecule, dodecamethylnonacosane-2,28-diyl dibenzoate (DMNDB), has been discovered as a new species that aggregates into chiral nano-assemblies. In the tetrahydrofuran (THF)/water system, the benzoate ester, DMNDB, could self-assemble into left-handed twisted nanowires, and the most suitable THF/water volume ratio to obtain uniform twisted nanowires was 3 : 7. The driving forces of assembly and the molecular packing type in assemblies for the twisted nanowires were explored, and a possible assembly mechanism was proposed to understand the generation of chiral assemblies. Interestingly, the left-handed nanowires could cross-link and immobilize the solvent in the isopropanol (iPrOH)/water (2 : 8) system to form chiral gels. When the iPrOH/water ratio was increased to 6 : 4, the left-handed nanowires as structural units were found to evolve to right-handed nanofibers. Accordingly, the intermolecular interactions and the molecular packing type also changed with the solvent ratio. What is more, the xerogel could be obtained by drying the gel and left-handed twisted nanowires could form in the THF/water system again, showing the recyclability of chiral nanoassemblies. Also, these DMNDB chiral nanostructures exhibited potential for application in enantioselective separation by co-assembling with tetra-aniline.
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Affiliation(s)
- Chuanqiang Zhou
- Testing Center, Yangzhou University, Yangzhou, Jiangsu 225002, P. R. China
| | - Qianqian Xu
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu 225002, P. R. China.
| | - Yuanyuan Ren
- Testing Center, Yangzhou University, Yangzhou, Jiangsu 225002, P. R. China
| | - Xiaohuan Sun
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu 225002, P. R. China.
| | - Zhilong Xu
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu 225002, P. R. China.
| | - Jie Han
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu 225002, P. R. China.
| | - Rong Guo
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu 225002, P. R. China.
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Zha X, Chen Y, Fan H, Yang Y, Xiong Y, Xu G, Yan K, Wang Y, Xie Y, Wang D. Handedness Inversion of Chiral 3-Aminophenol Formaldehyde Resin Nanotubes Mediated by Metal Coordination. Angew Chem Int Ed Engl 2021; 60:7759-7769. [PMID: 33368984 DOI: 10.1002/anie.202013790] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Indexed: 12/31/2022]
Abstract
Precise adjustment of microstructure and handedness of chiral nanomaterials is important to regulate their properties and performance. Herein, helical 3-aminophenol formaldehyde resin (APF) nanotubes and corresponding carbonaceous nanotubes with controllable handedness and optical activity were obtained via an external metal ion-mediated supramolecular co-templating method in an enantiomerically pure template system, in which an appropriate amount of Mn2+ (Co2+ or Ni2+ ) with moderate coordination abilities can reverse the spatial arrangement of the phenylglycine-based amphiphilic template molecules through metal coordination. Different stacking modes of coordination complexes in disparate metal ion systems lead to diverse helical senses (diameter and pitch) of the obtained helical APF. In addition, this coordination mode of metal intervention can be applied to other amine-based helical polymer synthesis systems, which paves the way for the design of high-quality chiral nanomaterials with satisfactory physical parameters and properties.
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Affiliation(s)
- Xinlin Zha
- Hubei Key Laboratory of Advanced Textile Materials & Application, Wuhan Textile University, Yangguang Road 1, Wuhan, 430200, P. R. China
| | - Yuanli Chen
- Hubei Key Laboratory of Advanced Textile Materials & Application, Wuhan Textile University, Yangguang Road 1, Wuhan, 430200, P. R. China
| | - Hui Fan
- Hubei Key Laboratory of Advanced Textile Materials & Application, Wuhan Textile University, Yangguang Road 1, Wuhan, 430200, P. R. China
| | - Yonggang Yang
- College of Chemistry and Chemical Engineering, Suzhou University, Suzhou, 215123, P. R. China
| | - Yi Xiong
- Hubei Key Laboratory of Advanced Textile Materials & Application, Wuhan Textile University, Yangguang Road 1, Wuhan, 430200, P. R. China
| | - Guilin Xu
- Hubei Key Laboratory of Advanced Textile Materials & Application, Wuhan Textile University, Yangguang Road 1, Wuhan, 430200, P. R. China
| | - Kun Yan
- Hubei Key Laboratory of Advanced Textile Materials & Application, Wuhan Textile University, Yangguang Road 1, Wuhan, 430200, P. R. China
| | - Yuedan Wang
- Hubei Key Laboratory of Advanced Textile Materials & Application, Wuhan Textile University, Yangguang Road 1, Wuhan, 430200, P. R. China
| | - Yi Xie
- Hefei National Laboratory for Physical Sciences at the Microscale, Collaborative Innovation Center of Chemistry for Energy Materials, University of Science and Technology of China, Hefei, 230026, P. R. China
| | - Dong Wang
- Hubei Key Laboratory of Advanced Textile Materials & Application, Wuhan Textile University, Yangguang Road 1, Wuhan, 430200, P. R. China
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6
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Zha X, Chen Y, Fan H, Yang Y, Xiong Y, Xu G, Yan K, Wang Y, Xie Y, Wang D. Handedness Inversion of Chiral 3‐Aminophenol Formaldehyde Resin Nanotubes Mediated by Metal Coordination. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202013790] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Xinlin Zha
- Hubei Key Laboratory of Advanced Textile Materials & Application Wuhan Textile University Yangguang Road 1 Wuhan 430200 P. R. China
| | - Yuanli Chen
- Hubei Key Laboratory of Advanced Textile Materials & Application Wuhan Textile University Yangguang Road 1 Wuhan 430200 P. R. China
| | - Hui Fan
- Hubei Key Laboratory of Advanced Textile Materials & Application Wuhan Textile University Yangguang Road 1 Wuhan 430200 P. R. China
| | - Yonggang Yang
- College of Chemistry and Chemical Engineering Suzhou University Suzhou 215123 P. R. China
| | - Yi Xiong
- Hubei Key Laboratory of Advanced Textile Materials & Application Wuhan Textile University Yangguang Road 1 Wuhan 430200 P. R. China
| | - Guilin Xu
- Hubei Key Laboratory of Advanced Textile Materials & Application Wuhan Textile University Yangguang Road 1 Wuhan 430200 P. R. China
| | - Kun Yan
- Hubei Key Laboratory of Advanced Textile Materials & Application Wuhan Textile University Yangguang Road 1 Wuhan 430200 P. R. China
| | - Yuedan Wang
- Hubei Key Laboratory of Advanced Textile Materials & Application Wuhan Textile University Yangguang Road 1 Wuhan 430200 P. R. China
| | - Yi Xie
- Hefei National Laboratory for Physical Sciences at the Microscale Collaborative Innovation Center of Chemistry for Energy Materials University of Science and Technology of China Hefei 230026 P. R. China
| | - Dong Wang
- Hubei Key Laboratory of Advanced Textile Materials & Application Wuhan Textile University Yangguang Road 1 Wuhan 430200 P. R. China
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7
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Sedghiniya S, Soleimannejad J, Foroutan M, Ebrahimi M, Naeini VF. A V( iii)-induced metallogel with solvent stimuli-responsive properties: structural proof-of-concept with MD simulations. RSC Adv 2021; 11:36801-36813. [PMID: 35494376 PMCID: PMC9043536 DOI: 10.1039/d1ra07055j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Accepted: 11/09/2021] [Indexed: 11/21/2022] Open
Abstract
A new solvent stimuli-responsive metallogel (VGel) was synthesized through the introduction of vanadium ions into an adenine (Ade) and 1,3,5-benzene tricarboxylic acid (BTC) organogel, and its supramolecular self-assembly was investigated from a computational viewpoint. A relationship between the synthesized VGel integrity and the self-assembly of its components is demonstrated by a broad range of molecular dynamics (MD) simulations, an aspect that has not yet been explored for such a complex metallogel in particular. MD simulations and Voronoi tessellation assessments, both in agreement with experimental data, confirm the gel formation. Based on excellent water stability and the ethanol/methanol stimuli-responsive feature of the VGel an easy-to-use visualization assay for the detection of counterfeit liquor with a 6% (v/v) methanol limit of detection in 40% (v/v) ethanol is reported. These observations provide a cheap and technically simple method and are a step towards the immersible screening of similar molecules in methanol-spiked beverages. A new solvent stimuli-responsive metallogel (VGel) was synthesized through the introduction of vanadium ions into an adenine (Ade) and BTC organogel, and its supramolecular self-assembly was investigated from a computational viewpoint.![]()
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Affiliation(s)
- Sima Sedghiniya
- School of Chemistry, College of Science, University of Tehran, Tehran, Iran
| | | | - Masumeh Foroutan
- School of Chemistry, College of Science, University of Tehran, Tehran, Iran
| | - Mina Ebrahimi
- School of Chemistry, College of Science, University of Tehran, Tehran, Iran
| | - Vahid Fadaei Naeini
- Division of Machine Elements, Luleå University of Technology, Luleå, SE-97187, Sweden
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Gayen K, Nandi N, Das KS, Hermida-Merino D, Hamley IW, Banerjee A. The aging effect on the enhancement of thermal stability, mechanical stiffness and fluorescence properties of histidine-appended naphthalenediimide based two-component hydrogels. SOFT MATTER 2020; 16:10106-10114. [PMID: 32716462 DOI: 10.1039/d0sm00468e] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
A histidine attached naphthalenediimide (NDI)-containing amphiphilic molecule (NDIP) self-assembles into nanotubes in aqueous solution at pH 6.6 as revealed by high-resolution transmission electron microscopy studies. This histidine-appended NDI forms a two-component hydrogel in the presence of tartaric acid at a molar ratio of 1 : 2. A morphological transformation was observed from a nanotube structure in the non-gel aggregated state of histidine appended NDI to interconnected cross-linked nanofibers of the two-component hydrogel in the presence of tartaric acid. Interestingly, the gel exhibits an unusual behavior upon aging compared to the fresh gel. It is found that the thermal stability and gel stiffness increase very significantly upon aging. Another important feature noted is that the very weak fluorescence of the fresh gel is transformed into bright greenish fluorescence upon aging. These results suggest that intermolecular interactions among the gelator molecules and tartaric acid in the gel phase slowly increase with time to form a mechanically very stiff and thermally robust gel.
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Affiliation(s)
- Kousik Gayen
- School of Biological Sciences, Indian Association for the Cultivation of Science, Jadavpur, Kolkata, 700032, India.
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10
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Thamizhanban A, Lalitha K, Nagarajan S. Self-Assembled Soft Materials for Energy and Environmental Applications. ACTA ACUST UNITED AC 2019. [DOI: 10.1007/978-3-030-04474-9_10] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/20/2023]
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11
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Tómasson DA, Ghosh D, Kržišnik Z, Fasolin LH, Vicente AA, Martin AD, Thordarson P, Damodaran KK. Enhanced Mechanical and Thermal Strength in Mixed-Enantiomers-Based Supramolecular Gel. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:12957-12967. [PMID: 30272986 DOI: 10.1021/acs.langmuir.8b02729] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Mixing supramolecular gels based on enantiomers leads to re-arrangement of gel fibers at the molecular level, which results in more favorable packing and tunable properties. Bis(urea) compounds tagged with a phenylalanine methyl ester in racemic and enantiopure forms were synthesized. Both enantiopure and racemate compounds formed gels in a wide range of solvents and the racemate (1-rac) formed a stronger gel network compared with the enantiomers. The gel (1R+1S) obtained by mixing equimolar amount of enantiomers (1R and 1S) showed enhanced mechanical and thermal stability compared to enantiomers and racemate gels. The preservation of chirality in these compounds was analyzed by circular dichroism and optical rotation measurements. Analysis of the scanning electron microscopy (SEM) and atomic force microscopy (AFM) images revealed that the network in the mixed gel is a combination of enantiomers and racemate fibers, which was further supported by solid-state NMR. The analysis of the packing in xerogels by solid-state NMR spectra and the existence of twisted-tape morphology in SEM and AFM images confirmed the presence of both self-sorted and co-assembled fibers in mixed gel. The enhanced thermal and mechanical strength may be attributed to the enhanced intermolecular forces between the racemate and the enantiomer and the combination of both self-sorted and co-assembled enantiomers in the mixed gel.
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Affiliation(s)
- Daníel Arnar Tómasson
- Department of Chemistry, Science Institute , University of Iceland , Dunhagi 3 , 107 Reykjavík , Iceland
| | - Dipankar Ghosh
- Department of Chemistry, Science Institute , University of Iceland , Dunhagi 3 , 107 Reykjavík , Iceland
| | - Zala Kržišnik
- Department of Chemistry, Science Institute , University of Iceland , Dunhagi 3 , 107 Reykjavík , Iceland
| | - Luiz Henrique Fasolin
- Centre of Biological Engineering , University of Minho , Campus de Gualtar , 4710-057 Braga , Portugal
| | - António A Vicente
- Centre of Biological Engineering , University of Minho , Campus de Gualtar , 4710-057 Braga , Portugal
| | - Adam D Martin
- School of Chemistry, The Australian Centre for Nanomedicine and the ARC Centre of Excellence in Convergent Bio-Nano Science and Technology , University of New South Wales , Sydney 2052 , Australia
| | - Pall Thordarson
- School of Chemistry, The Australian Centre for Nanomedicine and the ARC Centre of Excellence in Convergent Bio-Nano Science and Technology , University of New South Wales , Sydney 2052 , Australia
| | - Krishna K Damodaran
- Department of Chemistry, Science Institute , University of Iceland , Dunhagi 3 , 107 Reykjavík , Iceland
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12
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Zhou C, Feng X, Wang R, Yang G, Wang T, Jiang J. Hierarchical Assembly of l-Phenylalanine-Terminated Bolaamphiphile with Porphyrin Show Tunable Nanostructures and Photocatalytic Properties. ACS OMEGA 2018; 3:10638-10646. [PMID: 31459184 PMCID: PMC6645274 DOI: 10.1021/acsomega.8b01822] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2018] [Accepted: 08/23/2018] [Indexed: 05/05/2023]
Abstract
Demands related to clean energy and environmental protection promote the development of novel supramolecular assemblies for photocatalysis. Because of the distinctive aggregation behaviors, bolaamphiphiles with two hydrophilic end groups could be theoretically the right candidates for the fabrication of high-performance photocatalysis. However, photocatalytic applications based on bolaamphiphilic assemblies were still rarely investigated. Especially, the relationship between diverse assembled nanostructures and the properties for different applications is urgently needed to be studied. Herein, we demonstrate that using the hierarchical assembly of bolaamphiphiles could correctly induce the porphyrin supramolecular architectures with much better photocatalytic performances than the aggregations containing 450 times of the porphyrin molecules, even though both molecular structures as well as the J-aggregations of porphyrin building blocks are same in two different systems. Thus, the co-assembly of l-phenylalanine terminated bolaamphiphile (Bola-F) and the porphyrin containing four hydroxyl groups (tetrakis-5,10,15,20-(4-hydroxyphenyl)porphyrin) can form microtube in methanol and forms fibers/spheres in methanol/water mixture. For catalyzing the photodegradation of rhodamine B, the small amount of J-aggregated porphyrin within Bola-F microtubes show much better photocatalytic performance comparing with that of huge porphyrin J-aggregations in fibers/spheres. The supramolecular assemblies as well as the photocatalysis were thoroughly characterized by different spectroscopies and electron microscopy. It is demonstrated that the co-assembly with bolaamphiphiles could inhibit the energy transfer of porphyrin aggregation and subsequently benefit the electron transfer and corresponding photocatalysis under photo-irradiation. This work is not only useful for further understanding the hierarchically supramolecular assembly but also provides a new strategy for making novel functional supramolecular architectures based on the assembly of bolaamphiphiles and porphyrins.
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Affiliation(s)
- Cuiyun Zhou
- Beijing Key Laboratory for Science
and Application of Functional Molecular and Crystalline Materials,
Department of Chemistry, University of Science
and Technology Beijing, Beijing 100083, China
| | - Xuenan Feng
- Beijing Key Laboratory for Science
and Application of Functional Molecular and Crystalline Materials,
Department of Chemistry, University of Science
and Technology Beijing, Beijing 100083, China
| | - Rong Wang
- Beijing Key Laboratory for Science
and Application of Functional Molecular and Crystalline Materials,
Department of Chemistry, University of Science
and Technology Beijing, Beijing 100083, China
| | - Gengxiang Yang
- Beijing Key Laboratory for Science
and Application of Functional Molecular and Crystalline Materials,
Department of Chemistry, University of Science
and Technology Beijing, Beijing 100083, China
| | - Tianyu Wang
- Beijing Key Laboratory for Science
and Application of Functional Molecular and Crystalline Materials,
Department of Chemistry, University of Science
and Technology Beijing, Beijing 100083, China
| | - Jianzhuang Jiang
- Beijing Key Laboratory for Science
and Application of Functional Molecular and Crystalline Materials,
Department of Chemistry, University of Science
and Technology Beijing, Beijing 100083, China
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13
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Edwards W, Smith DK. Chiral Assembly Preferences and Directing Effects in Supramolecular Two-Component Organogels. Gels 2018; 4:gels4020031. [PMID: 30674807 PMCID: PMC6209267 DOI: 10.3390/gels4020031] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2018] [Revised: 03/23/2018] [Accepted: 03/25/2018] [Indexed: 12/31/2022] Open
Abstract
The impact of chirality on the self-assembly of supramolecular gels is of considerable importance, as molecular-scale programming can be translated into nanostructuring and ultimately affect macroscopic performance. This paper explores the effect of chirality on the assembly of two-component gels comprised of a second-generation dendritic lysine peptide acid, containing three chiral centres, and an amine. This combination forms an acid⁻amine complex that assembles into nanofibres through peptide-peptide hydrogen bonds, leading to organogels. With achiral amines, a racemic mixture of l,l,l and d,d,d dendritic peptide acids surprisingly forms the best gels-more commonly, mixing enantiomers suppresses gelation. Thermodynamic studies demonstrate that depending on the amine, the greater stability of heterochiral gels can either be entropically or enthalpically driven. With amines possessing "R" chirality, the l,l,l peptide acid consistently forms more effective gels than its d,d,d analogue. Furthermore, in mixed gels, l,l,l sometimes imposes its assembly preference onto d,d,d. In summary, this paper demonstrates a rare example in which heterochiral gels are preferred, and also explores directing effects when each component in a two-component gel is chiral.
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Affiliation(s)
- William Edwards
- Department of Chemistry, University of York, Heslington, York YO10 5DD, UK.
| | - David K Smith
- Department of Chemistry, University of York, Heslington, York YO10 5DD, UK.
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14
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Theoretical insights into aggregation-induced helicity modulation of a perylene bisimide derivative. J Mol Model 2018; 24:51. [DOI: 10.1007/s00894-018-3591-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2017] [Accepted: 01/19/2018] [Indexed: 11/25/2022]
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15
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Wang L, Jin X, Ye L, Zhang AY, Bezuidenhout D, Feng ZG. Rapidly Recoverable Thixotropic Hydrogels from the Racemate of Chiral OFm Monosubstituted Cyclo(Glu-Glu) Derivatives. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:13821-13827. [PMID: 29110482 DOI: 10.1021/acs.langmuir.7b03527] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Both chiral OFm monosubstituted cyclo(l-Glu-l-Glu) and cyclo(d-Glu-d-Glu) display a robust gelation ability in a variety of organic solvents and water. In contrast to an individual enantiomer, their racemate can form rapidly recoverable thixotropic hydrogels with a remarkably shorter thixotropic recovery time. This unexpected thixotropic behavior is induced by the random arrangement of d- and l-enantiomers in the cell units, leading to the formation of "pseudoracemate", noncrystalline self-assemblies in the resulting 3D fibrous network.
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Affiliation(s)
- Lu Wang
- School of Materials Science and Engineering, Beijing Institute of Technology , No. 5 South Street Zhongguancun, Beijing 100081, P. R. China
| | - Xin Jin
- School of Materials Science and Engineering, Beijing Institute of Technology , No. 5 South Street Zhongguancun, Beijing 100081, P. R. China
| | - Lin Ye
- School of Materials Science and Engineering, Beijing Institute of Technology , No. 5 South Street Zhongguancun, Beijing 100081, P. R. China
| | - Ai-Ying Zhang
- School of Materials Science and Engineering, Beijing Institute of Technology , No. 5 South Street Zhongguancun, Beijing 100081, P. R. China
| | - Deon Bezuidenhout
- Cardiovascular Research Unit, Chris Barnard Division of Cardiothoracic Surgery, 203 Cape Heart Centre, Faculty of Health Sciences, University of Cape Town , Cape Town 7700, South Africa
| | - Zeng-Guo Feng
- School of Materials Science and Engineering, Beijing Institute of Technology , No. 5 South Street Zhongguancun, Beijing 100081, P. R. China
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16
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Abstract
Supramolecular hydrogels, formed via intermolecular interactions in water, are emerging as a new type of versatile soft materials to be applied in many areas, such as biomedical applications, catalysis, food additives, and cosmetics. While most of the supramolecular hydrogels are homotypic (i.e., one type of building blocks), heterotypic supramolecular hydrogels are less explored, but may offer unique advantages. This review discribes supramolecular hydrogels that consist of more than one type building blocks (i.e., heterotypic) to illustrate the promises and challenges of heterotypic supramolecular hydrogels as soft biomaterials. First, we discuss the driving force for producing heterotypic supramolecular hydrogels. Second, we introduce the general methods for triggering heterotypic supramolecular hydrogels. Third, we summarize the examples of heterotypic supramolecular hydrogels made of hydrogelators with or without containing amino acid residues. Fourth, we describe the applications of heterotypic supramolecular hydrogels up-to-date. Finally, we give the outlook and propose a few future directions that likely worth to be explored.
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Affiliation(s)
- Dan Yuan
- 415 South Street, MS 015, Waltham, MA 02453, USA
| | - Bing Xu
- 415 South Street, MS 015, Waltham, MA 02453, USA
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17
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Liu X, Fei J, Zhu P, Li J. Facile Co-Assembly of a Dipeptide-Based Organogel toward Efficient Triplet-Triplet Annihilation Photonic Upconversion. Chem Asian J 2016; 11:2700-2704. [DOI: 10.1002/asia.201600500] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2016] [Indexed: 11/11/2022]
Affiliation(s)
- Xingcen Liu
- Beijing National Laboratory for Molecular Sciences (BNLMS); CAS Key Lab of Colloid, Interface and Chemical Thermodynamics; Institute of Chemistry; Chinese Academy of Sciences; Zhong Guan Cun Beijing 100190 China
- University of Chinese Academy of Sciences; Beijing 100049 China
| | - Jinbo Fei
- Beijing National Laboratory for Molecular Sciences (BNLMS); CAS Key Lab of Colloid, Interface and Chemical Thermodynamics; Institute of Chemistry; Chinese Academy of Sciences; Zhong Guan Cun Beijing 100190 China
| | - Pengli Zhu
- Shenzhen Institutes of Advanced Technology; Chinese Academy of Sciences; Shenzhen 518055 China
| | - Junbai Li
- Beijing National Laboratory for Molecular Sciences (BNLMS); CAS Key Lab of Colloid, Interface and Chemical Thermodynamics; Institute of Chemistry; Chinese Academy of Sciences; Zhong Guan Cun Beijing 100190 China
- University of Chinese Academy of Sciences; Beijing 100049 China
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18
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Suzuki M, Uematsu H, Hanabusa K. Novel organogelators based on phytosphingosine. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.05.051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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19
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Liu Z, Sun J, Zhou Y, Zhang Y, Wu Y, Nalluri SKM, Wang Y, Samanta A, Mirkin CA, Schatz GC, Stoddart JF. Supramolecular Gelation of Rigid Triangular Macrocycles through Rings of Multiple C–H···O Interactions Acting Cooperatively. J Org Chem 2016; 81:2581-8. [DOI: 10.1021/acs.joc.6b00281] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Zhichang Liu
- Department
of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, United States
| | - Junling Sun
- Department
of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, United States
| | - Yu Zhou
- Department
of Materials Science and Engineering, Northwestern University, 2220 Campus
Drive, Evanston, Illinois 60208-3113, United States
| | - Yu Zhang
- Department
of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, United States
- Center
for Bio-inspired Energy Science, Northwestern University, 2145 Sheridan
Road, Evanston, Illinois 60208-3113, United States
| | - Yilei Wu
- Department
of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, United States
| | - Siva Krishna Mohan Nalluri
- Department
of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, United States
| | - Yuping Wang
- Department
of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, United States
| | - Avik Samanta
- Department
of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, United States
| | - Chad A. Mirkin
- Department
of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, United States
- Department
of Materials Science and Engineering, Northwestern University, 2220 Campus
Drive, Evanston, Illinois 60208-3113, United States
| | - George C. Schatz
- Department
of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, United States
- Center
for Bio-inspired Energy Science, Northwestern University, 2145 Sheridan
Road, Evanston, Illinois 60208-3113, United States
| | - J. Fraser Stoddart
- Department
of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, United States
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20
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Baddi S, Madugula SS, Sarma DS, Soujanya Y, Palanisamy A. Combined Experimental and Computational Study of the Gelation of Cyclohexane-Based Bis(acyl-semicarbazides) and the Multi-Stimuli-Responsive Properties of Their Gels. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:889-99. [PMID: 26727635 DOI: 10.1021/acs.langmuir.5b03987] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
The current study reports the one-step synthesis and gelation properties of cyclohexane-based bis(acyl-semicarbazide) gelators with an additional -NH group incorporated into urea moieties and carrying hydrophobic chains of varying length (C8-C18). The gels exhibited thermoreversibility and could be tuned in the presence of anions at different concentrations in addition their the ultrasound-responsive nature, thus making them multi-stimuli-responsive. The combined experimental and computational study on these gels reveals that the balance between two noncovalent interactions, viz., hydrogen bonding between the amide groups in acyl-semicarbazide moieties and van der Waals forces between long hydrocarbon tails, is found to be the determining factor in the process of organogelation. A systematic increase in alkyl chain length leads to equilibrium between these two types of noncovalent forces that is manifested in the spectral and thermal properties of the gels. The H-bonding interactions dominated up to a certain chain length, and further increases in the alkyl chain length led to increased van der Waals interactions as observed by IR, XRD, and thermal studies. Computational calculations were carried out on dimer structures of C8-C18 to understand the variation in noncovalent forces responsible for aggregate formation in the gel state as a function of the alkyl chain length. The results indicate that both intermolecular and intramolecular hydrogen bonding stabilize the aggregate structures. Supramolecular aggregation in the gel state led to the viscoelastic nature of the gels, and the addition of anions led to the disruption of self-assembly, which was studied by rheology.
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Affiliation(s)
| | | | - D Srinivasa Sarma
- Geochemistry Division, CSIR-National Geophysical Research Institute , Hyderabad-500007, Telangana, India
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21
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Portada T, Molčanov K, Šijaković Vujičić N, Žinić M. Biphenyl Bis(amino alcohol) Oxalamide Gelators: Complex Gelation Involving Coupled Equilibria, Central-to-Axial Chirality Transfer, Diastereoisomer Interconversion, and Self-Sorting. European J Org Chem 2016. [DOI: 10.1002/ejoc.201501261] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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22
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Caumes X, Baldi A, Gontard G, Brocorens P, Lazzaroni R, Vanthuyne N, Troufflard C, Raynal M, Bouteiller L. Tuning the structure of 1,3,5-benzene tricarboxamide self-assemblies through stereochemistry. Chem Commun (Camb) 2016; 52:13369-13372. [DOI: 10.1039/c6cc07325e] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
A heterochiral BTA monomer forms long rods in cyclohexane whilst its homochiral analogue assembles into dimers.
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Affiliation(s)
- Xavier Caumes
- Sorbonne Universités
- UPMC Univ Paris 06
- CNRS
- Institut Parisien de Chimie Moléculaire
- F-75005 Paris
| | - Arianna Baldi
- Sorbonne Universités
- UPMC Univ Paris 06
- CNRS
- Institut Parisien de Chimie Moléculaire
- F-75005 Paris
| | - Geoffrey Gontard
- Sorbonne Universités
- UPMC Univ Paris 06
- CNRS
- Institut Parisien de Chimie Moléculaire
- F-75005 Paris
| | - Patrick Brocorens
- Service de Chimie des Matériaux Nouveaux
- Université de Mons/Materia Nova
- B-7000 Mons
- Belgium
| | - Roberto Lazzaroni
- Service de Chimie des Matériaux Nouveaux
- Université de Mons/Materia Nova
- B-7000 Mons
- Belgium
| | | | - Claire Troufflard
- Sorbonne Universités
- UPMC Univ Paris 06
- CNRS
- Institut Parisien de Chimie Moléculaire
- F-75005 Paris
| | - Matthieu Raynal
- Sorbonne Universités
- UPMC Univ Paris 06
- CNRS
- Institut Parisien de Chimie Moléculaire
- F-75005 Paris
| | - Laurent Bouteiller
- Sorbonne Universités
- UPMC Univ Paris 06
- CNRS
- Institut Parisien de Chimie Moléculaire
- F-75005 Paris
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23
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Du X, Zhou J, Shi J, Xu B. Supramolecular Hydrogelators and Hydrogels: From Soft Matter to Molecular Biomaterials. Chem Rev 2015; 115:13165-307. [PMID: 26646318 PMCID: PMC4936198 DOI: 10.1021/acs.chemrev.5b00299] [Citation(s) in RCA: 1278] [Impact Index Per Article: 142.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2015] [Indexed: 12/19/2022]
Abstract
In this review we intend to provide a relatively comprehensive summary of the work of supramolecular hydrogelators after 2004 and to put emphasis particularly on the applications of supramolecular hydrogels/hydrogelators as molecular biomaterials. After a brief introduction of methods for generating supramolecular hydrogels, we discuss supramolecular hydrogelators on the basis of their categories, such as small organic molecules, coordination complexes, peptides, nucleobases, and saccharides. Following molecular design, we focus on various potential applications of supramolecular hydrogels as molecular biomaterials, classified by their applications in cell cultures, tissue engineering, cell behavior, imaging, and unique applications of hydrogelators. Particularly, we discuss the applications of supramolecular hydrogelators after they form supramolecular assemblies but prior to reaching the critical gelation concentration because this subject is less explored but may hold equally great promise for helping address fundamental questions about the mechanisms or the consequences of the self-assembly of molecules, including low molecular weight ones. Finally, we provide a perspective on supramolecular hydrogelators. We hope that this review will serve as an updated introduction and reference for researchers who are interested in exploring supramolecular hydrogelators as molecular biomaterials for addressing the societal needs at various frontiers.
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Affiliation(s)
- Xuewen Du
- Department of Chemistry, Brandeis University, 415 South Street, Waltham, Massachusetts 02454, United States
| | - Jie Zhou
- Department of Chemistry, Brandeis University, 415 South Street, Waltham, Massachusetts 02454, United States
| | - Junfeng Shi
- Department of Chemistry, Brandeis University, 415 South Street, Waltham, Massachusetts 02454, United States
| | - Bing Xu
- Department of Chemistry, Brandeis University, 415 South Street, Waltham, Massachusetts 02454, United States
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24
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Lv T, Yan H, Cao J, Liang S. Hydrophilic Molecularly Imprinted Resorcinol–Formaldehyde–Melamine Resin Prepared in Water with Excellent Molecular Recognition in Aqueous Matrices. Anal Chem 2015; 87:11084-91. [DOI: 10.1021/acs.analchem.5b03253] [Citation(s) in RCA: 58] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Tianwei Lv
- Key
Laboratory of Pharmaceutical Quality Control of Hebei Province, College of Pharmacy, Hebei University, Baoding, 071002, China
| | - Hongyuan Yan
- Key
Laboratory of Pharmaceutical Quality Control of Hebei Province, College of Pharmacy, Hebei University, Baoding, 071002, China
- Key
Laboratory of Medicinal Chemistry and Molecular Diagnosis, Ministry of Education, Hebei University, Baoding, 071002, China
| | - Jiankun Cao
- Key
Laboratory of Pharmaceutical Quality Control of Hebei Province, College of Pharmacy, Hebei University, Baoding, 071002, China
| | - Shiru Liang
- Key
Laboratory of Pharmaceutical Quality Control of Hebei Province, College of Pharmacy, Hebei University, Baoding, 071002, China
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25
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Affiliation(s)
- Minghua Liu
- Beijing National Laboratory for Molecular Science (BNLMS), CAS Key Laboratory of Colloid, Interface and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People's Republic of China
| | - Li Zhang
- Beijing National Laboratory for Molecular Science (BNLMS), CAS Key Laboratory of Colloid, Interface and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People's Republic of China
| | - Tianyu Wang
- Beijing National Laboratory for Molecular Science (BNLMS), CAS Key Laboratory of Colloid, Interface and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People's Republic of China
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26
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Liu GF, Ji W, Feng CL. Installing Logic Gates to Multiresponsive Supramolecular Hydrogel Co-assembled from Phenylalanine Amphiphile and Bis(pyridinyl) Derivative. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:7122-7128. [PMID: 26061452 DOI: 10.1021/acs.langmuir.5b01585] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Recently, logic gates based on multiresponsive hydrogel systems are attractive because of their potential biological applications. A quite simple supramolecular hydrogel co-assembled from phenylalanine-based amphiphile (LPF2) and bis(pyridinyl) derivative (AP) is constructed. The co-assembled hydrogel exhibited a macroscopic gel-sol transition in response to four distinct input stimuli: temperature, acid, base, and light. A set of techniques including microscopic, spectroscopic, and rheological measurements demonstrate this performance and confirm that the hydrogel is formed through intermolecular hydrogen bonds between amide/pyridine moieties and carbonyl groups. On the basis of its mutiple-stimulus responsiveness, installing gel-based supramolecular logic gates (OR and XOR) is achieved. It may promote the possibility to develop smart soft materials, such as gels, that can be used as tools releasing a drug quantitatively by rational design and fine control of the external stimuli.
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Affiliation(s)
- Guo-Feng Liu
- State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiaotong University, 800 Dongchuan Road, Shanghai 200240, People's Republic of China
| | - Wei Ji
- State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiaotong University, 800 Dongchuan Road, Shanghai 200240, People's Republic of China
| | - Chuan-Liang Feng
- State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiaotong University, 800 Dongchuan Road, Shanghai 200240, People's Republic of China
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27
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Yin S, Dong L, Xia Y, Dong B, He X, Chen D, Qiu H, Song B. Controlled self-assembly of a pyrene-based bolaamphiphile by acetate ions: from nanodisks to nanofibers by fluorescence enhancement. SOFT MATTER 2015; 11:4424-4429. [PMID: 25925332 DOI: 10.1039/c5sm00356c] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
In this paper, a pyrene moiety is incorporated into a bolaamphiphile to form a novel molecule denoted PRB. Above the critical micelle concentration, PRB forms nanodisks in the aqueous solution. The addition of acetate ions induces a morphological change in self-assembled aggregates, which convert into nanofibers with a diameter of several nanometers. More interestingly, along with the morphological change, the fluorescence of the assemblies was enhanced concomitantly, which can be attributed to the binding effect of acetate ions on pyridinium head groups of PRB.
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Affiliation(s)
- Shouchun Yin
- College of Material Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 310036, China.
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