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Wang B, Liu Y, Chen X, Liu XT, Liu Z, Lu C. Aggregation-induced emission-active supramolecular polymers: from controlled preparation to applications. Chem Soc Rev 2024; 53:10189-10215. [PMID: 39229831 DOI: 10.1039/d3cs00017f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/05/2024]
Abstract
Supramolecular polymers are typical self-assemblies, in which repeating monomer units are bonded together with dynamic and reversible noncovalent interactions. Supramolecular polymers can combine the advantages of polymer science and supramolecular chemistry. Aggregation-induced emission (AIE) means that a molecule remains faintly emissive in the dispersed state but intensively luminescent in a highly aggregated state. AIE has brought new opportunities and further development potential to the field of polymeric chemistry. The integration of AIE luminogens with supramolecular interactions can provide new vitality for supramolecular polymers. Therefore, it is essential for scientists to understand the preparation and applications of AIE-active supramolecular polymers. This review focuses on the recent advanced progress in the preparation of AIE-active supramolecular polymers. In addition, we summarize the newly developed supramolecular polymers with an AIE nature and their applications in chemical sensing, and in vitro and in vivo imaging, as well as the visualization of their structure and properties. Finally, the development trends and challenges of AIE-active supramolecular polymers are prospected.
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Affiliation(s)
- Beibei Wang
- Pingyuan Laboratory, and College of Chemistry, Zhengzhou University, Zhengzhou 450001, China.
| | - Yuhao Liu
- Pingyuan Laboratory, and College of Chemistry, Zhengzhou University, Zhengzhou 450001, China.
| | - Xueqian Chen
- Pingyuan Laboratory, and College of Chemistry, Zhengzhou University, Zhengzhou 450001, China.
| | - Xiao-Ting Liu
- Pingyuan Laboratory, and College of Chemistry, Zhengzhou University, Zhengzhou 450001, China.
| | - Zhongyi Liu
- Pingyuan Laboratory, and College of Chemistry, Zhengzhou University, Zhengzhou 450001, China.
| | - Chao Lu
- Pingyuan Laboratory, and College of Chemistry, Zhengzhou University, Zhengzhou 450001, China.
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China
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2
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Ramalhete SM, Nartowski KP, Green H, Angulo J, Iuga D, Fábián L, Lloyd GO, Khimyak YZ. Probing assembly/disassembly of ordered molecular hydrogels. Faraday Discuss 2024. [PMID: 39291762 DOI: 10.1039/d4fd00081a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/19/2024]
Abstract
Supramolecular hydrogels have a wide range of applications in the biomedical field, acting as scaffolds for cell culture, matrices for tissue engineering and vehicles for drug delivery. L-Phenylalanine (Phe) is a natural amino acid that plays a significant role in several physiological and pathophysiological processes (phenylketonuria and assembly of fibrils linked to tissue damage). Since Myerson et al. [Chem. Eng. Commun., 2002, 189(8), 1079-1090] reported that Phe forms a fibrous network in vitro, Phe's self-assembly processes in water have been thoroughly investigated. We have reported structural control over gelation by introduction of a halogen atom in the aromatic ring of Phe, driving changes in the packing motifs, and therefore, dictating gelation functionality. The additional level of control gained over supramolecular gelation via the preparation of multi-component gel systems offers significant advantages in tuning functional properties of such materials. Gaining molecular-level information on the distribution of gelators between the inherent structural and dynamic heterogeneities of these materials remains a considerable challenge. Using multicomponent gels based on Phe and amino-L-phenylalanine (NH2-Phe), we will explore the patterns of ordered/disordered domains in the gel fibres and will attempt to come up with general trends of interactions in the gel fibres and at the fibre/solution interfaces. Phe and NH2-Phe were found to self-assemble in water into crystalline hydrogels. The determined faster dynamics of exchange between the gel and solution states of NH2-Phe in comparison with Phe were correlated with weaker intermolecular interactions, highlighting the role of head groups in dictating the strength of intermolecular interactions. In the mixed Phe/NH2-Phe systems, at a low concentration of NH2-Phe, disruption of the network was promoted by interference of the aliphatics of NH2-Phe with the electrostatic interactions between Phe molecules. At high concentrations of NH2-Phe, multiple-gelator hydrogels were formed with crystal habits different from those of the pure gel fibres. NMR crystallography approaches combining the strengths of solid- and solution-state NMR proved particularly suitable to obtain structural and dynamic insights into the "ordered" fibres, solution phase and fibre/solution interfaces in these gels. These findings are supported by a plethora of experimental (diffraction, rheology, microscopy and thermal analysis) and computational methods.
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Affiliation(s)
- Susana M Ramalhete
- School of Pharmacy, University of East Anglia, Norwich Research Park, Norwich, NR2 1TS, UK.
| | - Karol P Nartowski
- School of Pharmacy, University of East Anglia, Norwich Research Park, Norwich, NR2 1TS, UK.
- Department of Drug Form Technology, Wroclaw Medical University, Borowska 211A, 50-556 Wroclaw, Poland
| | - Hayley Green
- Institute of Chemical Sciences, School of Engineering and Physical Sciences, Heriot-Watt University, Edinburgh, EH14 4AS, UK
| | - Jesús Angulo
- Instituto de Investigaciones Químicas (CSIC-US), Avda. Américo Vespucio, 49, Sevilla 41092, Spain
| | - Dinu Iuga
- Department of Physics, University of Warwick, Coventry, CV4 7AL, UK
| | - László Fábián
- School of Pharmacy, University of East Anglia, Norwich Research Park, Norwich, NR2 1TS, UK.
| | - Gareth O Lloyd
- School of Chemistry, University of Lincoln, Lincoln, LN6 7DL, UK.
| | - Yaroslav Z Khimyak
- School of Pharmacy, University of East Anglia, Norwich Research Park, Norwich, NR2 1TS, UK.
- Department of Drug Form Technology, Wroclaw Medical University, Borowska 211A, 50-556 Wroclaw, Poland
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3
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Contreras-Montoya R, Álvarez de Cienfuegos L, Gavira JA, Steed JW. Supramolecular gels: a versatile crystallization toolbox. Chem Soc Rev 2024. [PMID: 39258871 DOI: 10.1039/d4cs00271g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/12/2024]
Abstract
Supramolecular gels are unique materials formed through the self-assembly of molecular building blocks, typically low molecular weight gelators (LMWGs), driven by non-covalent interactions. The process of crystallization within supramolecular gels has broadened the scope of the traditional gel-phase crystallization technique offering the possibility of obtaining crystals of higher quality and size. The broad structural diversity of LMWGs allows crystallization in multiple organic and aqueous solvents, favouring screening and optimization processes and the possibility to search for novel polymorphic forms. These supramolecular gels have been used for the crystallization of inorganic, small organic compounds of pharmaceutical interest, and proteins. Results have shown that these gels are not only able to produce crystals of high quality but also to influence polymorphism and physicochemical properties of the crystals, giving rise to crystals with potential new bio- and technological applications. Thus, understanding the principles of crystallization in supramolecular gels is essential for tailoring their properties and applications, ranging from drug delivery systems to composite crystals with tunable stability properties. In this review, we summarize the use of LMWG-based supramolecular gels as media to grow single crystals of a broad range of compounds.
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Affiliation(s)
| | - Luis Álvarez de Cienfuegos
- Departamento de Química Orgánica, Unidad de Excelencia Química Aplicada a Biomedicina y Medioambiente (UEQ), Universidad de Granada, E-18071, Granada, Spain
| | - José A Gavira
- Laboratorio de Estudios Cristalográficos, Instituto Andaluz de Ciencias de la Tierra (IACT, CSIC), E-18100, Granada, Spain
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Kuppadakkath G, Volkova I, Damodaran KK. Designing Stimuli-Responsive Supramolecular Gels by Tuning the Non-Covalent Interactions of the Functional Groups. Gels 2024; 10:584. [PMID: 39330186 PMCID: PMC11430835 DOI: 10.3390/gels10090584] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2024] [Revised: 08/25/2024] [Accepted: 09/09/2024] [Indexed: 09/28/2024] Open
Abstract
The physical characteristics of a supramolecular gel are greatly influenced by the nature and arrangement of functional groups in the gelator. This work focuses on the impact of the functional groups, specifically the hydroxyl group, on the stimuli-responsive properties of a gel. We used a C3-symmetric benzene-1,3,5-tricarboxamide (BTA) platform, which was attached to the methyl ester of phenylalanine (MPBTA) and tyrosine (MTBTA). The gelation studies revealed that MPBTA gelled in alcohols, non-polar aromatic solvents, and aqueous mixtures (1:1, v/v) of high-polar solvents, whereas MTBTA gelled only in an aqueous mixture of DMF (1:1, v/v). The mechanical and thermal strength of the gels were evaluated by rheological and Tgel studies, and the results indicated that MPBTA gels were stronger than MTBTA gels. The gels were characterized by powder X-ray diffraction and scanning electron microscopy (SEM). The analysis of stimuli-responsive properties revealed that MPBTA gels were intact in the presence of sodium/potassium salts, but the MTBTA gel network was disrupted. These results indicate that the elegant choice of functional groups could be used to tune the constructive or destructive stimuli-responsive behavior of gels. This study highlights the significant role of functional groups in modulating the stimuli-responsive properties of supramolecular gels.
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Affiliation(s)
- Geethanjali Kuppadakkath
- Department of Chemistry, Science Institute, University of Iceland, Dunhagi 3, 107 Reykjavík, Iceland
| | - Ira Volkova
- Department of Chemistry, Science Institute, University of Iceland, Dunhagi 3, 107 Reykjavík, Iceland
| | - Krishna K Damodaran
- Department of Chemistry, Science Institute, University of Iceland, Dunhagi 3, 107 Reykjavík, Iceland
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5
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Gudmundsson TA, Kuppadakkath G, Ghosh D, Ruether M, Seddon A, Ginesi RE, Doutch J, Adams DJ, Gunnlaugsson T, Damodaran KK. Nanoscale assembly of enantiomeric supramolecular gels driven by the nature of solvents. NANOSCALE 2024; 16:8922-8930. [PMID: 38591601 DOI: 10.1039/d4nr00204k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/10/2024]
Abstract
Understanding the key parameters that control the self-assembly process is critical to predict self-assembly modes in multi-component systems, which will lead to the development of nanofibrous materials with tuneable properties. Enantiomeric amino acid-based low-molecular-weight gelators (LMWGs) were mixed in polar (polar protic) and aromatic apolar (aromatic) solvents and compared to their individual counterparts to probe the effect of solvent polarity on the self-assembly process. Scanning electron microscopy (SEM) reveals that xerogels of individual components display hollow needles in polar protic solvents, while chiral coils are observed in aromatic solvents. In contrast, the multi-component gel displays hollow needle morphologies in both solvents, indicating similar morphologies in polar protic solvents but an entirely different nanostructure for the individual gel networks in aromatic solvents. PXRD experiments performed on the dried gels showed that the nature of the solvents plays a vital role in the co-assembly process of multi-component gels. The self-assembly modes and the gel state structure of the gels are analysed by wide-angle X-ray diffraction (WAXS) and small-angle neutron diffraction (SANS), which reveals that the mixed gel undergoes different co-assembly modes depending on the nature of the solvent systems. This study shows that different co-assembly modes can be achieved for structurally similar components by varying the solvent polarity, demonstrating the importance of solvent choice in the self-assembly process of multi-component gels.
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Affiliation(s)
- Tómas A Gudmundsson
- Department of Chemistry, Science Institute, University of Iceland, Dunhagi 3, 107 Reykjavík, Iceland.
- School of Chemistry and Trinity Biomedical Sciences Institute (TBSI) and Advanced Materials and BioEngineering Research (AMBER) Centre, Trinity College Dublin, The University of Dublin, Dublin 2, D02 PN40, Ireland
| | - Geethanjali Kuppadakkath
- 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.
| | - Manuel Ruether
- School of Chemistry and Trinity Biomedical Sciences Institute (TBSI) and Advanced Materials and BioEngineering Research (AMBER) Centre, Trinity College Dublin, The University of Dublin, Dublin 2, D02 PN40, Ireland
| | - Annela Seddon
- School of Physics, HH Wills Physics Laboratory, Tyndall Avenue, University of Bristol, Bristol, BS8 1TL, UK
| | - Rebecca E Ginesi
- School of Chemistry, University of Glasgow, Glasgow, G12 8QQ, UK
| | - James Doutch
- ISIS Pulsed Neutron and Muon Source, Harwell Science and Innovation Campus, Didcot, OX11 0QX, UK
| | - Dave J Adams
- School of Chemistry, University of Glasgow, Glasgow, G12 8QQ, UK
| | - Thorfinnur Gunnlaugsson
- School of Chemistry and Trinity Biomedical Sciences Institute (TBSI) and Advanced Materials and BioEngineering Research (AMBER) Centre, Trinity College Dublin, The University of Dublin, Dublin 2, D02 PN40, Ireland
| | - Krishna K Damodaran
- Department of Chemistry, Science Institute, University of Iceland, Dunhagi 3, 107 Reykjavík, Iceland.
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Kuppadakkath G, Jayabhavan SS, Damodaran KK. Supramolecular Gels Based on C3-Symmetric Amides: Application in Anion-Sensing and Removal of Dyes from Water. Molecules 2024; 29:2149. [PMID: 38731640 PMCID: PMC11085098 DOI: 10.3390/molecules29092149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2024] [Revised: 04/26/2024] [Accepted: 05/03/2024] [Indexed: 05/13/2024] Open
Abstract
We modified C3-symmetric benzene-1,3,5-tris-amide (BTA) by introducing flexible linkers in order to generate an N-centered BTA (N-BTA) molecule. The N-BTA compound formed gels in alcohols and aqueous mixtures of high-polar solvents. Rheological studies showed that the DMSO/water (1:1, v/v) gels were mechanically stronger compared to other gels, and a similar trend was observed for thermal stability. Powder X-ray analysis of the xerogel obtained from various aqueous gels revealed that the packing modes of the gelators in these systems were similar. The stimuli-responsive properties of the N-BTA towards sodium/potassium salts indicated that the gel network collapsed in the presence of more nucleophilic anions such as cyanide, fluoride, and chloride salts at the MGC, but the gel network was intact when in contact with nitrate, sulphate, acetate, bromide, and iodide salts, indicating the anion-responsive properties of N-BTA gels. Anion-induced gel formation was observed for less nucleophilic anions below the MGC of N-BTA. The ability of N-BTA gels to act as an adsorbent for hazardous anionic and cationic dyes in water was evaluated. The results indicated that the ethanolic gels of N-BTA successfully absorbed methylene blue and methyl orange dyes from water. This work demonstrates the potential of the N-BTA gelator to act as a stimuli-responsive material and a promising candidate for water purification.
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Affiliation(s)
| | | | - Krishna K. Damodaran
- Department of Chemistry, Science Institute, University of Iceland, Dunhagi 3, 107 Reykjavík, Iceland
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7
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Lu H, Yang X, Wang H. Tuning Phase Transition of Molecular Self-Assembly by Artificial Chaperones through Aromatic-Aromatic Interactions. Biomacromolecules 2024; 25:466-473. [PMID: 38147794 DOI: 10.1021/acs.biomac.3c01082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2023]
Abstract
The molecular chaperones are essential and play significant roles in controlling the protein phase transition and maintaining physiological homeostasis. However, manipulating phase transformation in biomimetic peptide self-assembly is still challenging. This work shows that an artificial chaperone modulates the energy landscape of supramolecular polymerization, thus controlling the phase transition of amyloid-like assemblies from crystals to hydrogels to solution. The absence of a chaperone allows the NapP to form crystals, while the presence of the chaperone biases the pathway to form nanofibrous hydrogels to soluble oligomers by adjusting the chaperone ratios. Mechanistic studies reveal that the aromatic-aromatic interaction is the key to trapping the molecules in a higher energy fold. Adding the chaperone relieves this restriction, lowers the energy barrier, and transforms the crystal into a hydrogel. This phase transformation can also be achieved in the macromolecular crowding environment, thus providing new insights into understanding molecular self-assembly in multiple component systems.
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Affiliation(s)
- Honglei Lu
- Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang Province 310027, China
- Department of Chemistry, School of Science, Institute of Natural Sciences, Westlake Institute for Advanced Study, Westlake University, No. 600 Dunyu Road, Hangzhou, Zhejiang Province 310024, China
| | - Xuejiao Yang
- Department of Chemistry, School of Science, Institute of Natural Sciences, Westlake Institute for Advanced Study, Westlake University, No. 600 Dunyu Road, Hangzhou, Zhejiang Province 310024, China
- Westlake Laboratory of Life Sciences and Biomedicine, 18 Shilongshan Road, Hangzhou, Zhejiang Province 310024, China
| | - Huaimin Wang
- Department of Chemistry, School of Science, Institute of Natural Sciences, Westlake Institute for Advanced Study, Westlake University, No. 600 Dunyu Road, Hangzhou, Zhejiang Province 310024, China
- Westlake Laboratory of Life Sciences and Biomedicine, 18 Shilongshan Road, Hangzhou, Zhejiang Province 310024, China
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8
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Xiang S, Guilbaud-Chéreau C, Hoschtettler P, Stefan L, Bianco A, Ménard-Moyon C. Preparation and optimization of agarose or polyacrylamide/amino acid-based double network hydrogels for photocontrolled drug release. Int J Biol Macromol 2024; 255:127919. [PMID: 37944737 DOI: 10.1016/j.ijbiomac.2023.127919] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Revised: 10/30/2023] [Accepted: 11/04/2023] [Indexed: 11/12/2023]
Abstract
The high water content and biocompatibility of amino-acid-based supramolecular hydrogels have generated growing interest in drug delivery research. Nevertheless, the existing dominant approach of constructing such hydrogels, the exploitation of a single amino acid type, typically comes with several drawbacks such as weak mechanical properties and long gelation times, hindering their applications. Here, we design a near-infrared (NIR) light-responsive double network (DN) structure, containing amino acids and different synthetic or natural polymers, i.e., polyacrylamide, poly(N-isopropylacrylamide), agarose, or low-gelling agarose. The hydrogels displayed high mechanical strength and high drug-loading capacity. Adjusting the ratio of Fmoc-Tyr-OH/Fmoc-Tyr(Bzl)-OH or Fmoc-Phe-OH/Fmoc-Tyr(Bzl)-OH, we could drastically shorten the gelation time of the DN hydrogels at room and body temperatures. Moreover, introducing photothermal agents (graphene oxide, carbon nanotubes, molybdenum disulfide nanosheets, or indocyanine green), we equipped the hydrogels with NIR responsivity. We demonstrated the light-triggered release of the drug baclofen, which is used in severe spasticity treatment. Rheology and stability tests confirmed the positive impact of the polymers on the mechanical strength of the hydrogels, while maintaining good stability under physiological conditions. Overall, our study contributed a novel hydrogel formulation with high mechanical resistance, rapid gel formation, and efficient NIR-controlled drug release, offering new opportunities for biomedical applications.
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Affiliation(s)
- Shunyu Xiang
- CNRS, Immunology, Immunopathology and Therapeutic Chemistry, UPR 3572, University of Strasbourg, ISIS, 67000 Strasbourg, France
| | - Chloé Guilbaud-Chéreau
- CNRS, Immunology, Immunopathology and Therapeutic Chemistry, UPR 3572, University of Strasbourg, ISIS, 67000 Strasbourg, France
| | | | - Loïc Stefan
- Université de Lorraine, CNRS, LCPM, 54000 Nancy, France
| | - Alberto Bianco
- CNRS, Immunology, Immunopathology and Therapeutic Chemistry, UPR 3572, University of Strasbourg, ISIS, 67000 Strasbourg, France.
| | - Cécilia Ménard-Moyon
- CNRS, Immunology, Immunopathology and Therapeutic Chemistry, UPR 3572, University of Strasbourg, ISIS, 67000 Strasbourg, France.
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9
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Tang J, Cheng Y, Ding M, Wang C. Bio-Inspired Far-From-Equilibrium Hydrogels: Design Principles and Applications. Chempluschem 2023; 88:e202300449. [PMID: 37787015 DOI: 10.1002/cplu.202300449] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2023] [Revised: 09/28/2023] [Accepted: 09/29/2023] [Indexed: 10/04/2023]
Abstract
Inspired from dynamic living systems that operate under out-of-equilibrium conditions in biology, developing supramolecular hydrogels with self-regulating and autonomously dynamic properties to further advance adaptive hydrogels with life-like behavior is important. This review presents recent progress of bio-inspired supramolecular hydrogels out-of-equilibrium. The principle of out-of-equilibrium self-assembly for creating bio-inspired hydrogels is discussed. Various design strategies have been identified, such as chemical-driven reaction cycles with feedback control and physically oscillatory systems. These strategies can be coupled with hydrogels to achieve temporal and spatial control over structural and mechanical properties as well as programmable lifetime. These studies open up huge opportunities for potential applications, such as fluidic guidance, information storage, drug delivery, actuators and more. Finally, we address the challenges ahead of us in the coming years, and future possibilities and prospects are identified.
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Affiliation(s)
- Jiadong Tang
- School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, 200241, China
- Chongqing Key Laboratory of Precision Optics, Chongqing Institute of East China Normal University, Chongqing, 401120, China
| | - Yibo Cheng
- School of Chemistry and Molecular Engineering, East China University of Science & Technology, Shanghai, 200237, China
| | - Muhua Ding
- School of Chemistry and Molecular Engineering, East China University of Science & Technology, Shanghai, 200237, China
| | - Chen Wang
- School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, 200241, China
- Chongqing Key Laboratory of Precision Optics, Chongqing Institute of East China Normal University, Chongqing, 401120, China
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Sebastian S, Yadav E, Bhardwaj P, Maruthi M, Kumar D, Gupta MK. Facile one-pot multicomponent synthesis of peptoid based gelators as novel scaffolds for drug incorporation and pH-sensitive release. J Mater Chem B 2023; 11:9975-9986. [PMID: 37823277 DOI: 10.1039/d3tb01527k] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/13/2023]
Abstract
Infections caused by bacteria are the primary cause of illness and death globally, and antibiotics are the most commonly used medications to treat them. However, there are certain inherent problems in administering these drugs without any changes to their effectiveness. In order to sustain the targeted dosage over time, the use of a biocompatible local drug delivery system using low molecular mass gelators is preferred as a potential approach to reduce its side effects. Low molecular weight organic gelators (LMWOGs) have drawn a lot of attention due to their numerous and varied applications in multiple fields. But nowadays its quite a challenging task to synthesize new types of LMWOGs that can fill the significant gap towards potential applications. In this work, we have explored a multicomponent pathway for the synthesis of a small repertoire of peptoids from simple building blocks by a one-pot Ugi reaction. A variety of novel effective low molecular weight organic gelators have been synthesized, leading to the formation of stable self-assembled aggregates in various solvents such as DMSO, aqueous DMSO, and methanol. Consequently, these aggregates give rise to the creation of organogels and organo/hydrogels. The gels have a minimum gelation concentration (MGC) of 1-2% w/v with high thermal stability. Furthermore, successful encapsulation and release of metronidazole (MZ) were achieved within the gel matrix under physiological pH conditions at 37 °C, ensuring the preservation of its structural and functional properties. The results demonstrated that the release rate of MZ from the organo/hydrogels is contingent on pH, exhibiting a gradual and regulated release in mild alkaline environments. Moreover, the devised system displayed noteworthy antimicrobial efficacy against E. coli, underscoring the potential of these novel low molecular weight organic gels (LMWOGs) as effective drug delivery systems in the pharmaceutical industry. The gel formulations exhibit biocompatibility and negligible cytotoxicity, as evidenced by cell viability studies conducted using the MTT assay.
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Affiliation(s)
- Sharol Sebastian
- Department of Chemistry, School of Basic Sciences, Central University of Haryana, Mahendergarh 123031, Haryana, India.
| | - Eqvinshi Yadav
- Department of Chemistry, School of Basic Sciences, Central University of Haryana, Mahendergarh 123031, Haryana, India.
| | - Priya Bhardwaj
- Department of Biochemistry, School of Interdisciplinary and Applied Sciences, Central University of Haryana, Mahendergarh 123031, Haryana, India
| | - Mulaka Maruthi
- Department of Biochemistry, School of Interdisciplinary and Applied Sciences, Central University of Haryana, Mahendergarh 123031, Haryana, India
| | - Deepak Kumar
- Department of Pharmaceutical Chemistry, School of Pharmaceutical Sciences, Shoolini University, Solan-173 229, Himachal Pradesh, India
| | - Manoj K Gupta
- Department of Chemistry, School of Basic Sciences, Central University of Haryana, Mahendergarh 123031, Haryana, India.
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11
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Ward M, Taylor CR, Mulvee MT, Lampronti GI, Belenguer AM, Steed JW, Day GM, Oswald IDH. Pushing Technique Boundaries to Probe Conformational Polymorphism. CRYSTAL GROWTH & DESIGN 2023; 23:7217-7230. [PMID: 37808905 PMCID: PMC10557047 DOI: 10.1021/acs.cgd.3c00641] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Revised: 08/11/2023] [Indexed: 10/10/2023]
Abstract
We present an extensive exploration of the solid-form landscape of chlorpropamide (CPA) using a combined experimental-computational approach at the frontiers of both fields. We have obtained new conformational polymorphs of CPA, placing them into context with known forms using flexible-molecule crystal structure prediction. We highlight the formation of a new polymorph (ζ-CPA) via spray-drying experiments despite its notable metastability (14 kJ/mol) relative to the thermodynamic α-form, and we identify and resolve the ball-milled η-form isolated in 2019. Additionally, we employ impurity- and gel-assisted crystallization to control polymorphism and the formation of novel multicomponent forms. We, thus, demonstrate the power of this collaborative screening approach to observe, rationalize, and control the formation of new metastable forms.
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Affiliation(s)
- Martin
R. Ward
- Strathclyde
Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, 161 Cathedral Street, Glasgow G4 0RE, U.K.
| | - Christopher R. Taylor
- Computational
Systems Chemistry, School of Chemistry, University of Southampton, Southampton SO17 1BJ, U.K.
| | - Matthew T. Mulvee
- Department
of Chemistry, Durham University, South Road, Durham DH1 3LE, U.K.
| | - Giulio I. Lampronti
- Department
of Materials Science & Metallurgy, University
of Cambridge, 27 Charles Babbage Rd, Cambridge CB3 0FS, U.K.
| | - Ana M. Belenguer
- Yusuf
Hamied Department of Chemistry, University
of Cambridge, Lensfield
Road, Cambridge CB2 1EW, U.K.
| | - Jonathan W. Steed
- Department
of Chemistry, Durham University, South Road, Durham DH1 3LE, U.K.
| | - Graeme M. Day
- Computational
Systems Chemistry, School of Chemistry, University of Southampton, Southampton SO17 1BJ, U.K.
| | - Iain D. H. Oswald
- Strathclyde
Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, 161 Cathedral Street, Glasgow G4 0RE, U.K.
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12
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Li J, Cui Y, Lu YL, Zhang Y, Zhang K, Gu C, Wang K, Liang Y, Liu CS. Programmable supramolecular chirality in non-equilibrium systems affording a multistate chiroptical switch. Nat Commun 2023; 14:5030. [PMID: 37596287 PMCID: PMC10439165 DOI: 10.1038/s41467-023-40698-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Accepted: 08/03/2023] [Indexed: 08/20/2023] Open
Abstract
The dynamic regulation of supramolecular chirality in non-equilibrium systems can provide valuable insights into molecular self-assembly in living systems. Herein, we demonstrate the use of chemical fuels for regulating self-assembly pathway, which thereby controls the supramolecular chirality of assembly in non-equilibrium systems. Depending on the nature of different fuel acids, the system shows pathway-dependent non-equilibrium self-assembly, resulting in either dynamic self-assembly with transient supramolecular chirality or kinetically trapped self-assembly with inverse supramolecular chirality. More importantly, successive conducting of chemical-fueled process and thermal annealing process allows for the sequential programmability of the supramolecular chirality between four different chiral hydrogels, affording a new example of a multistate supramolecular chiroptical switch that can be recycled multiple times. The current finding sheds new light on the design of future supramolecular chiral materials, offering access to alternative self-assembly pathways and kinetically controlled non-equilibrium states.
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Affiliation(s)
- Jingjing Li
- School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou, 450001, China
| | - Yihan Cui
- College of New Energy, Zhengzhou University of Light Industry, Zhengzhou, 450002, China
| | - Yi-Lin Lu
- Department of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Nankai University, Tianjin, 300071, China
| | - Yunfei Zhang
- College of New Energy, Zhengzhou University of Light Industry, Zhengzhou, 450002, China
| | - Kaihuang Zhang
- College of New Energy, Zhengzhou University of Light Industry, Zhengzhou, 450002, China
| | - Chaonan Gu
- College of New Energy, Zhengzhou University of Light Industry, Zhengzhou, 450002, China
| | - Kaifang Wang
- School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou, 450001, China
- College of New Energy, Zhengzhou University of Light Industry, Zhengzhou, 450002, China
| | - Yujia Liang
- School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou, 450001, China
- College of New Energy, Zhengzhou University of Light Industry, Zhengzhou, 450002, China
| | - Chun-Sen Liu
- College of New Energy, Zhengzhou University of Light Industry, Zhengzhou, 450002, China.
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13
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Ghanbari E, Chen Z, Padmanabhan P, Picken SJ, van Esch JH. Supramolecular Arrangement and Rheological Properties of Bisamide Gels. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:10913-10924. [PMID: 37492983 PMCID: PMC10413945 DOI: 10.1021/acs.langmuir.3c01100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Revised: 07/12/2023] [Indexed: 07/27/2023]
Abstract
We report a systematic study of the gelation behavior of nBA gelators in xylene, with odd and even n-methylene spacers between the amide groups (n = 5-10) and 17 carbons at each end. The melting temperatures (Tm0) of nBA gels are obtained from fitting our DSCN(T) model to the experimental DSC data. The found Tm0 of nBA gels is about 35 °C lower than Tm0 of the pure nBA gelators. This is reasonably well explained by a simple model combining theories of Flory-Huggins and Gibbs free energy of melting (FHM model). We attribute this depression to an increase in entropy upon melting of the gel due to mixing with the solvent. The odd-even alternation in Tm0 of nBA gels, which was also found for the nBA gelators, indicates that the solid structures inside the gels are somewhat similar. This was studied using XRD: similar 00l reflections were found in the XRD patterns of all nBA gels and their nBA gelators. For even nBA gels, the same reflections in the 19-25° (2θ) region confirm that the sheetlike supramolecular structure of the gels is analogous to the lamellar structure of the solid gelators. For odd nBA gels, a slight difference in the reflections around 20-25° (2θ) implies a somewhat different side-by-side packing of odd nBA gels compared to the solid state. This variation is found for all the odd gels, and indeed, they show distinctly different morphologies compared to the even nBA gels. The possible effect of this on the rheological properties is discussed using some inspiration from the Halpin-Tsai model for composites where nBA gels are considered to be analogous to composite materials. The change of the storage modulus (G') with the shape factor of woven fibers and sheets in nBA gels (20 wt %) indicates that a rheological odd-even effect might indeed be present.
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Affiliation(s)
- Elmira Ghanbari
- Advanced Soft Matter (ASM)
Group, Chemical Engineering Department, Faculty of Applied Science
(TNW), Delft University of Technology, 2629 HZ Delft, The Netherlands
| | - Zian Chen
- Advanced Soft Matter (ASM)
Group, Chemical Engineering Department, Faculty of Applied Science
(TNW), Delft University of Technology, 2629 HZ Delft, The Netherlands
| | - Pooja Padmanabhan
- Advanced Soft Matter (ASM)
Group, Chemical Engineering Department, Faculty of Applied Science
(TNW), Delft University of Technology, 2629 HZ Delft, The Netherlands
| | - Stephen J. Picken
- Advanced Soft Matter (ASM)
Group, Chemical Engineering Department, Faculty of Applied Science
(TNW), Delft University of Technology, 2629 HZ Delft, The Netherlands
| | - Jan H. van Esch
- Advanced Soft Matter (ASM)
Group, Chemical Engineering Department, Faculty of Applied Science
(TNW), Delft University of Technology, 2629 HZ Delft, The Netherlands
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14
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Sudhakaran Jayabhavan S, Kuppadakkath G, Damodaran KK. The Role of Functional Groups in Tuning the Self-Assembly Modes and Physical Properties of Multicomponent Gels. Chempluschem 2023; 88:e202300302. [PMID: 37407430 DOI: 10.1002/cplu.202300302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Revised: 07/03/2023] [Accepted: 07/05/2023] [Indexed: 07/07/2023]
Abstract
We have analyzed the nature and role of functional groups on the self-assembly modes and the physical properties of multicomponent gels with structurally similar individual components. The gelation properties of individual and mixed enantiomeric compounds of biphenyl bis-(amides) of alanine (BPA) or phenylalanine (BPP) methyl ester were analyzed in various solvent/solvent mixtures. Multicomponent gels were formed by mixing the enantiomeric BPP compounds at a lower concentration, but a higher concentration was required for mixed alanine-based BPA gels. The comparison of the mechanical strength of the individual and mixed BPP compounds indicated that the mixed BPP gels displayed enhanced mechanical strength (∼2-fold increase) in p-xylene, but a weaker gel was observed in DMSO/water. However, a reverse trend was observed for BPA gels, indicating the role of functional groups in the gel network formation. X-ray diffraction analysis of the gelator and the xerogels in the solid state confirmed the formation of co-assembled networks in mixed enantiomeric gels. The stability of the gels towards anions was evaluated by analyzing the anion induced stimuli-responsive properties. These results indicate the effective modeling of the functional groups of the individual components could lead to multicomponent gels with tunable properties.
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Affiliation(s)
| | | | - Krishna K Damodaran
- Department of Chemistry, University of Iceland, Dunhagi 3, 107, Reykjavík, Iceland
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15
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Andrews J, Yufit DS, McCabe JF, Fox MA, Steed JW. Vapor Sorption and Halogen-Bond-Induced Solid-Form Rearrangement of a Porous Pharmaceutical. CRYSTAL GROWTH & DESIGN 2023; 23:2628-2633. [PMID: 37038401 PMCID: PMC10080649 DOI: 10.1021/acs.cgd.2c01464] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Revised: 02/08/2023] [Indexed: 06/19/2023]
Abstract
A porous, nonsolvated polymorph of the voltage-gated sodium channel blocker mexiletine hydrochloride absorbs iodine vapor to give a pharmaceutical cocrystal incorporating an I2Cl- anion that forms a halogen-π interaction with the mexiletine cations. The most thermodynamically stable form of the compound does not absorb iodine. This example shows that vapor sorption is a potentially useful and underused tool for bringing about changes in pharmaceutical solid form as part of a solid form screening protocol.
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Affiliation(s)
- Jessica
L. Andrews
- Department
of Chemistry, Durham University, South Road, Durham DH1 3LE, U.K.
| | - Dmitry S. Yufit
- Department
of Chemistry, Durham University, South Road, Durham DH1 3LE, U.K.
| | - James F. McCabe
- Pharmaceutical
Sciences, R&D, AstraZeneca, Charter Way, Silk Road Business
Park, Macclesfield SK10
2NA, U.K.
| | - Mark A. Fox
- Department
of Chemistry, Durham University, South Road, Durham DH1 3LE, U.K.
| | - Jonathan W. Steed
- Department
of Chemistry, Durham University, South Road, Durham DH1 3LE, U.K.
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16
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Metherall JP, Carroll RC, Coles SJ, Hall MJ, Probert MR. Advanced crystallisation methods for small organic molecules. Chem Soc Rev 2023; 52:1995-2010. [PMID: 36857636 DOI: 10.1039/d2cs00697a] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/03/2023]
Abstract
Molecular materials based on small organic molecules often require advanced structural analysis, beyond the capability of spectroscopic techniques, to fully characterise them. In such cases, diffraction methods such as single crystal X-ray diffraction (SCXRD), are one of the most powerful tools available to researchers, providing molecular and structural elucidation at atomic level resolution, including absolute stereochemistry. However SCXRD, and related diffraction methods, are heavily dependent on the availability of suitable, high-quality crystals, thus crystallisation often becomes the major bottleneck in preparing samples. Following a summary of classical methods for the crystallisation of small organic molecules, this review will focus on a number of recently developed advanced methods for crystalline material sample preparation for SCXRD. This review will cover two main areas of modern small organic molecule crystallisation, namely the inclusion of molecules within host complexes (e.g., "crystalline sponge" and tetraaryladamantane based inclusion chaperones) and the use of high-throughput crystallisation, employing "under-oil" approaches (e.g., microbatch under-oil and ENaCt). Representative examples have been included for each technique, together with a discussion of their relative advantages and limitations to aid the reader in selecting the most appropriate technique to overcome a specific analytical challenge.
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Affiliation(s)
- J P Metherall
- Newcastle University, Chemistry - School of Natural Environmental Sciences, Newcastle upon Tyne, NE1 7RU, UK.
| | - R C Carroll
- University of Southampton, School of Chemistry, Southampton, SO17 1BJ, UK
| | - S J Coles
- University of Southampton, School of Chemistry, Southampton, SO17 1BJ, UK
| | - M J Hall
- Newcastle University, Chemistry - School of Natural Environmental Sciences, Newcastle upon Tyne, NE1 7RU, UK.
| | - M R Probert
- Newcastle University, Chemistry - School of Natural Environmental Sciences, Newcastle upon Tyne, NE1 7RU, UK.
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17
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Stimuli-Responsive Properties of Supramolecular Gels Based on Pyridyl- N-oxide Amides. Gels 2023; 9:gels9020089. [PMID: 36826259 PMCID: PMC9956205 DOI: 10.3390/gels9020089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2022] [Revised: 01/15/2023] [Accepted: 01/17/2023] [Indexed: 01/22/2023] Open
Abstract
The nature of functional groups and their relative position and orientation play an important role in tuning the gelation properties of stimuli-responsive supramolecular gels. In this work, we synthesized and characterized mono-/bis-pyridyl-N-oxide compounds of N-(4-pyridyl)nicotinamide (L1-L3). The gelation properties of these N-oxide compounds were compared with the reported isomeric counterpart mono-/bis-pyridyl-N-oxide compounds of N-(4-pyridyl)isonicotinamide. Hydrogels obtained with L1 and L3 were thermally and mechanically more stable than the corresponding isomeric counterparts. The surface morphology of the xerogels of di-N-oxides (L3 and diNO) obtained from the water was studied using scanning electron microscopy (SEM), which revealed that the relative position of N-oxide moieties did not have a prominent effect on the gel morphology. The solid-state structural analysis was performed using single-crystal X-ray diffraction to understand the key mechanism in gel formation. The versatile nature of N-oxide moieties makes these gels highly responsive toward an external stimulus, and the stimuli-responsive behavior of the gels in water and aqueous mixtures was studied in the presence of various salts. We studied the effect of various salts on the gelation behavior of the hydrogels, and the results indicated that the salts could induce gelation in L1 and L3 below the minimum gelator concentration of the gelators. The mechanical properties were evaluated by rheological experiments, indicating that the modified compounds displayed enhanced gel strength in most cases. Interestingly, cadmium chloride formed supergelator at a very low concentration (0.7 wt% of L3), and robust hydrogels were obtained at higher concentrations of L3. These results show that the relative position of N-oxide moieties is crucial for the effective interaction of the gelator with salts/ions resulting in LMWGs with tunable properties.
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18
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Highly Thermally Resistant Bisamide Gelators as Pharmaceutical Crystallization Media. Gels 2022; 9:gels9010026. [PMID: 36661796 PMCID: PMC9858072 DOI: 10.3390/gels9010026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 12/12/2022] [Accepted: 12/27/2022] [Indexed: 12/31/2022] Open
Abstract
Three simple bisamide derivatives (G1, G2 and G3) with different structural modifications were synthesized with easy synthetic procedures in order to test their gel behaviour. The outcomes showed that hydrogen bonding was essential in gel formation; for this reason, only G1 provided satisfactory gels. The presence of methoxy groups in G2 and the alkyl chains in G3 hindered the hydrogen bonding between N-H and C=O that occurred G1. In addition, G1 provided thermally and mechanical stable gels, as confirmed with Tsol and rheology experiments. The gels of G1 were also responsive under pH stimuli and were employed as a vehicle for drug crystallization, causing a change in polymorphism in the presence of flufenamic acid and therefore providing the most thermodynamically stable form III compared with metastable form IV obtained from solution crystallization.
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19
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Li Z, Chen M, Chen Z, Zhu YL, Guo C, Wang H, Qin Y, Fang F, Wang D, Su C, He C, Yu X, Lu ZY, Li X. Non-equilibrium Nanoassemblies Constructed by Confined Coordination on a Polymer Chain. J Am Chem Soc 2022; 144:22651-22661. [PMID: 36411055 DOI: 10.1021/jacs.2c09726] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Biological systems employ non-equilibrium self-assembly to create ordered nanoarchitectures with sophisticated functions. However, it is challenging to construct artificial non-equilibrium nanoassemblies due to lack of control over assembly dynamics and kinetics. Herein, we design a series of linear polymers with different side groups for further coordination-driven self-assembly based on shape-complementarity. Such a design introduces a main-chain confinement which effectively slows down the assembly process of side groups, thus allowing us to monitor the real-time evolution of lychee-like nanostructures. The function related to the non-equilibrium nature is further explored by performing photothermal conversion study. The ability to observe and capture non-equilibrium states in this supramolecular system will enhance our understanding of the thermodynamic and kinetic features as well as functions of living systems.
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Affiliation(s)
- Zhikai Li
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, Guangdong 518060, China.,Institute of Microscale Optoelectronics, Shenzhen University, Shenzhen, Guangdong 518060, China
| | - Min Chen
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, Guangdong 518060, China
| | - Zhi Chen
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, Guangdong 518060, China
| | - You-Liang Zhu
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, China
| | - Chenxing Guo
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, Guangdong 518060, China
| | - Heng Wang
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, Guangdong 518060, China
| | - Yi Qin
- Center for AIE Research, College of Materials Science and Engineering, Shenzhen University, Shenzhen, Guangdong 518060, China
| | - Fang Fang
- Instrumental Analysis Center, Shenzhen University, Shenzhen, Guangdong 518060, China
| | - Dong Wang
- Center for AIE Research, College of Materials Science and Engineering, Shenzhen University, Shenzhen, Guangdong 518060, China
| | - Chenliang Su
- Institute of Microscale Optoelectronics, Shenzhen University, Shenzhen, Guangdong 518060, China
| | - Chuanxin He
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, Guangdong 518060, China
| | - Xiujun Yu
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, Guangdong 518060, China
| | - Zhong-Yuan Lu
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, China
| | - Xiaopeng Li
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, Guangdong 518060, China.,Shenzhen University General Hospital, Shenzhen University Clinical Medical Academy, Shenzhen, Guangdong 518055, China
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20
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Van Lommel R, Van Hooste J, Vandaele J, Steurs G, Van der Donck T, De Proft F, Rocha S, Sakellariou D, Alonso M, De Borggraeve WM. Does Supramolecular Gelation Require an External Trigger? Gels 2022; 8:gels8120813. [PMID: 36547337 PMCID: PMC9778329 DOI: 10.3390/gels8120813] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Revised: 11/23/2022] [Accepted: 12/06/2022] [Indexed: 12/14/2022] Open
Abstract
The supramolecular gelation of small molecules is typically preceded by an external stimulus to trigger the self-assembly. The need for this trigger stems from the metastable nature of most supramolecular gels and can limit their applicability. Herein, we present a small urea-based molecule that spontaneously forms a stable hydrogel by simple mixing without the addition of an external trigger. Single particle tracking experiments and observations made from scanning electron microscopy indicated that triggerless gelation occurred in a similar fashion as the archetypical heat-triggered gelation. These results could stimulate the search for other supramolecular hydrogels that can be obtained by simple mixing. Furthermore, the mechanism of the heat-triggered supramolecular gelation was elucidated by a combination of molecular dynamics simulations and quantitative NMR experiments. Surprisingly, hydrogelation seemingly occurs via a stepwise self-assembly in which spherical nanoparticles mature into an entangled fibrillary network.
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Affiliation(s)
- Ruben Van Lommel
- Molecular Design and Synthesis, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, Box 2404, 3001 Leuven, Belgium
- Eenheid Algemene Chemie (ALGC), Department of Chemistry, Vrije Universiteit Brussel (VUB), Pleinlaan 2, 1050 Brussels, Belgium
| | - Julie Van Hooste
- Molecular Design and Synthesis, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, Box 2404, 3001 Leuven, Belgium
| | - Johannes Vandaele
- Molecular Imaging and Photonics, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, Box 2404, 3001 Leuven, Belgium
| | - Gert Steurs
- Molecular Design and Synthesis, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, Box 2404, 3001 Leuven, Belgium
| | - Tom Van der Donck
- Department of Materials Engineering, KU Leuven, Kasteelpark Arenberg 44, 3001 Leuven, Belgium
| | - Frank De Proft
- Eenheid Algemene Chemie (ALGC), Department of Chemistry, Vrije Universiteit Brussel (VUB), Pleinlaan 2, 1050 Brussels, Belgium
| | - Susana Rocha
- Molecular Imaging and Photonics, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, Box 2404, 3001 Leuven, Belgium
| | - Dimitrios Sakellariou
- Center for Membrane Separations, Adsorption, Catalysis and Spectroscopy for Sustainable Solutions (cMACS), Department of Microbial and Molecular Systems (M2S), KU Leuven, Celestijnenlaan 200F, Box 2454, 3001 Leuven, Belgium
| | - Mercedes Alonso
- Eenheid Algemene Chemie (ALGC), Department of Chemistry, Vrije Universiteit Brussel (VUB), Pleinlaan 2, 1050 Brussels, Belgium
- Correspondence: (M.A.); (W.M.D.B.)
| | - Wim M. De Borggraeve
- Molecular Design and Synthesis, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, Box 2404, 3001 Leuven, Belgium
- Correspondence: (M.A.); (W.M.D.B.)
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21
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Liu Y, Du M, Zhang P, Wang H, Dong X, Wang Z, Wang Y, Ji L. Host-guest interaction enabled chiroptical property, morphology transition, and phase switch in azobenzene-glutamide amphiphile based hydrogel. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.130212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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22
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Andrews J, Kennedy SR, Yufit DS, McCabe JF, Steed JW. Designer Gelators for the Crystallization of a Salt Active Pharmaceutical Ingredient-Mexiletine Hydrochloride. CRYSTAL GROWTH & DESIGN 2022; 22:6775-6785. [PMID: 36345390 PMCID: PMC9635620 DOI: 10.1021/acs.cgd.2c00925] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Revised: 10/03/2022] [Indexed: 06/16/2023]
Abstract
We report an approach to obtain drug-mimetic supramolecular gelators, which are capable of stabilizing metastable polymorphs of the pharmaceutical salt mexiletine hydrochloride, a highly polymorphic antiarrhythmic drug. Solution-phase screening led to the discovery of two new solvated solid forms of mexiletine, a type C 1,2,4-trichlorobenzene tetarto-solvate and a type D nitrobenzene solvate. Various metastable forms were crystallized within the gels under conditions which would not have been possible in solution. Despite typically crystallizing concomitantly with form 1, a pure sample of form 3 was crystallized within a gel of ethyl methyl ketone. Various type A channel solvates were crystallized from gels of toluene and ethyl acetate, in which the contents of the channels varied from those of solution-phase forms. Most strikingly, the high-temperature-stable form 2 was crystallized from a gel in 1,2-dibromoethane: the only known route to access this form at room temperature. These results exemplify the powerful stabilizing effect of drug-mimetic supramolecular gels, which can be exploited in pharmaceutical polymorph screens to access highly metastable or difficult-to-nucleate solid forms.
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Affiliation(s)
- Jessica
L. Andrews
- Department
of Chemistry, Durham University, South Road, Durham DH1 3LE, U.K.
| | - Stuart R. Kennedy
- Department
of Chemistry, Durham University, South Road, Durham DH1 3LE, U.K.
| | - Dmitry S. Yufit
- Department
of Chemistry, Durham University, South Road, Durham DH1 3LE, U.K.
| | - James F. McCabe
- Pharmaceutical
Sciences, R&D, AstraZeneca, Charter Way, Silk Road Business Park, Macclesfield SK10 2NA, U.K.
| | - Jonathan W. Steed
- Department
of Chemistry, Durham University, South Road, Durham DH1 3LE, U.K.
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23
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Shen C, Han P, Zheng Z, Jiang W, Gao S, Hua C, Chen CL, Xia F, Zhai T, Liu K, Fang Y. Spatially Confined Face-Selective Growth of Large-Area 2D Organic Molecular Crystals in a Supramolecular Gel for Highly Efficient Flexible Photodetection. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2022; 9:e2203662. [PMID: 36054543 PMCID: PMC9596823 DOI: 10.1002/advs.202203662] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Revised: 08/12/2022] [Indexed: 06/15/2023]
Abstract
2D organic molecular crystals (2DOMCs) are promising materials for the fabrication of high-performance optoelectronic devices. However, the growth of organic molecules into 2DOMCs remains a challenge because of the difficulties in controlling their self-assembly with a preferential orientation in solution-process crystallization. Herein, fullerene is chosen as a model molecule to develop a supramolecular gel crystallization approach to grow large-area 2DOMCs by controlling the perfect arrangement on the {220} crystal plane with the assistance of a gelated solvent. In this case, the gel networks provide tuneable confined spaces to control the crystallization kinetics toward the growth of dominant crystal faces by their inhibiting motions of solvent or solute molecules to enable the growth of perfect crystals at appropriate nucleation rates. As a result, a large-area fullerene 2DOMC is produced successfully and its corresponding device on a flexible substrate exhibits excellent bendable properties and ultra-high weak light detection ability (2.9 × 1011 Jones) at a 10 V bias upon irradiation with 450 nm incident light. Moreover, its photoelectric properties remain unchanged after 200 cycles of bending at angles of 45, 90, and 180°. These results can be extended to the growth of other 2DOMCs for potentially fabricating advanced organic (opto)electronics.
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Affiliation(s)
- Chaowen Shen
- Key Laboratory of Applied Surface and Colloid ChemistryMinistry of EducationSchool of Chemistry and Chemical EngineeringShaanxi Normal UniversityXi′an710119P. R. China
| | - Pan Han
- Key Laboratory of Applied Surface and Colloid ChemistryMinistry of EducationSchool of Chemistry and Chemical EngineeringShaanxi Normal UniversityXi′an710119P. R. China
| | - Zhi Zheng
- State Key Laboratory of Materials Processing and Die and Mould TechnologySchool of Materials Science and EngineeringHuazhong University of Science and TechnologyWuhan430074P. R. China
- Engineering Research Center of Nano‐Geomaterials of Ministry of EducationFaculty of Materials Science and ChemistryChina University of GeosciencesWuhan430074P. R. China
| | - Wenhe Jiang
- Key Laboratory of Applied Surface and Colloid ChemistryMinistry of EducationSchool of Chemistry and Chemical EngineeringShaanxi Normal UniversityXi′an710119P. R. China
| | - Sheng Gao
- Key Laboratory of Applied Surface and Colloid ChemistryMinistry of EducationSchool of Chemistry and Chemical EngineeringShaanxi Normal UniversityXi′an710119P. R. China
| | - Chunxia Hua
- Key Laboratory of Applied Surface and Colloid ChemistryMinistry of EducationSchool of Chemistry and Chemical EngineeringShaanxi Normal UniversityXi′an710119P. R. China
| | - Cheng Lung Chen
- Department of ChemistryNational Sun Yat‐sen UniversityKaosiungTaiwan80424P. R. China
| | - Fan Xia
- Engineering Research Center of Nano‐Geomaterials of Ministry of EducationFaculty of Materials Science and ChemistryChina University of GeosciencesWuhan430074P. R. China
| | - Tianyou Zhai
- State Key Laboratory of Materials Processing and Die and Mould TechnologySchool of Materials Science and EngineeringHuazhong University of Science and TechnologyWuhan430074P. R. China
| | - Kaiqiang Liu
- Key Laboratory of Applied Surface and Colloid ChemistryMinistry of EducationSchool of Chemistry and Chemical EngineeringShaanxi Normal UniversityXi′an710119P. R. China
| | - Yu Fang
- Key Laboratory of Applied Surface and Colloid ChemistryMinistry of EducationSchool of Chemistry and Chemical EngineeringShaanxi Normal UniversityXi′an710119P. R. China
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Garai A, Goswami A, Biradha K. In situ conversion of a MOG to a crystalline MOF: a case study on solvent-dependent gelation and crystallization. Chem Commun (Camb) 2022; 58:11414-11417. [PMID: 36131685 DOI: 10.1039/d2cc04724a] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Herein, we report in situ transformation of a metal-organic gel (MOG) to a crystalline metal-organic framework (MOF) and solvent-dependent gelation/crystallization via solvothermal reactions of a tetracarboxylic acid, namely 4,4'-dinitro-2,2',6,6'-tetracarboxybiphenyl, and ZnSO4. The results provide structural insights into MOGs at the molecular level and also help in the synthesis of crystalline MOFs that are otherwise difficult to obtain.
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Affiliation(s)
- Abhijit Garai
- Department of Chemistry, Indian Institute of Technology, Kharagpur-721302, India.
| | - Anindita Goswami
- Department of Chemistry, Indian Institute of Technology, Kharagpur-721302, India.
| | - Kumar Biradha
- Department of Chemistry, Indian Institute of Technology, Kharagpur-721302, India.
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25
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Raza R, Baildya N, Ghosh K. Nanoarchitectonics with Positionally Isomeric Coumarin Carbamates: Structure‐Gelation Study, F‐ Recognition, Dye Removal and Excellent Oil‐Spill Recovery. Chempluschem 2022; 87:e202200270. [DOI: 10.1002/cplu.202200270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Revised: 08/22/2022] [Indexed: 11/11/2022]
Affiliation(s)
- Rameez Raza
- University of Kalyani Chemistry Kalyani 741235 Kalyani INDIA
| | | | - Kumaresh Ghosh
- University of Kalyani Chemistry Kalyani 741235 Kalyani INDIA
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26
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Ma X, Geng Y, Gao Y, Zhang J, Wang Y, Lai Y, Ren T, Tang J. Preparation of a multifunctional organogel and its electrochemical properties. SOFT MATTER 2022; 18:5166-5170. [PMID: 35797549 DOI: 10.1039/d2sm00703g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
A facile methodology to fabricate a highly elastic organogel for supercapacitors is demonstrated. A stable polymer organogel was obtained in DMSO by a simple esterification reaction. This organogel showed high mechanical performance, flexibility, high elasticity, luminous performance and conductivity, as well as high potential values for application in the energy sector.
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Affiliation(s)
- Xinxian Ma
- College of Chemistry and Chemical Engineering, Ningxia Normal University, Guyuan, 756000, People's Republic of China.
| | - Yutao Geng
- College of Chemistry and Chemical Engineering, Ningxia Normal University, Guyuan, 756000, People's Republic of China.
| | - Yang Gao
- College of Chemistry and Chemical Engineering, Ningxia Normal University, Guyuan, 756000, People's Republic of China.
| | - Jiali Zhang
- College of Chemistry and Chemical Engineering, Ningxia Normal University, Guyuan, 756000, People's Republic of China.
| | - Yipei Wang
- College of Chemistry and Chemical Engineering, Ningxia Normal University, Guyuan, 756000, People's Republic of China.
| | - Yingshan Lai
- College of Chemistry and Chemical Engineering, Ningxia Normal University, Guyuan, 756000, People's Republic of China.
| | - Tianqi Ren
- College of Chemistry and Chemical Engineering, Ningxia Normal University, Guyuan, 756000, People's Republic of China.
| | - Jiahong Tang
- College of Chemistry and Chemical Engineering, Ningxia Normal University, Guyuan, 756000, People's Republic of China.
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27
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Schäfer P, de Vet C, Gartzia-Rivero L, Raffy G, Kao MT, Schäfer C, Romasanta LJ, Pavageau B, Tsai YT, Hirsch L, Bassani DM, Del Guerzo A. Narcissistic self-sorting of n-acene nano-ribbons yielding energy-transfer and electroluminescence at p-n junctions. NANOSCALE 2022; 14:8951-8958. [PMID: 35551573 DOI: 10.1039/d2nr01017h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The 2,3-didecyloxy derivative of an n-type anthracene (n-BG) and a p-type tetracene (p-R) have been synthesized and their self-assembly into nano-ribbons studied. Hyperspectral fluorescence imaging revealed their narcissistic self-sorting, leading to separated nanoribbons emitting with very different colors (blue or green for n-BG, depending on the growth solvent, and red for p-R). It is unique that the usual origins of self-sorting, such as specific H-bonding, different growth kinetics, or incompatible steric hindrance can be ruled out. Hence, the narcissistic behaviour is herein proposed to originate from a so-far unconsidered cause: the discrepancy between the quadrupolar character of n-BG and dipolar character of p-R. At the p-n junctions of these nanoribbons, inter-ribbon FRET and electro-luminescence switch-on were observed by fluorescence/luminescence microscopy.
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Affiliation(s)
- Philip Schäfer
- Univ. Bordeaux, CNRS, Bordeaux INP, Institut des Sciences Moléculaires UMR 5255, 351 Cours de la Libération, F-33400 Talence, France.
| | - Christiaan de Vet
- Univ. Bordeaux, CNRS, Bordeaux INP, Institut des Sciences Moléculaires UMR 5255, 351 Cours de la Libération, F-33400 Talence, France.
| | - Leire Gartzia-Rivero
- Univ. Bordeaux, CNRS, Bordeaux INP, Institut des Sciences Moléculaires UMR 5255, 351 Cours de la Libération, F-33400 Talence, France.
- Department of Physical Chemistry, University of the Basque Country (UPV/EHU), Apartado 644, 48080 Bilbao, Spain
| | - Guillaume Raffy
- Univ. Bordeaux, CNRS, Bordeaux INP, Institut des Sciences Moléculaires UMR 5255, 351 Cours de la Libération, F-33400 Talence, France.
| | - Min-Tzu Kao
- Univ. Bordeaux, CNRS, Bordeaux INP, Institut des Sciences Moléculaires UMR 5255, 351 Cours de la Libération, F-33400 Talence, France.
| | - Christian Schäfer
- Univ. Bordeaux, CNRS, Bordeaux INP, Institut des Sciences Moléculaires UMR 5255, 351 Cours de la Libération, F-33400 Talence, France.
| | - Laura J Romasanta
- CNRS, Solvay, Univ. Bordeaux, LOF, UMR 5258, 178 Avenue du Dr Albert Schweitzer, F-33600 Pessac, France
| | - Bertrand Pavageau
- CNRS, Solvay, Univ. Bordeaux, LOF, UMR 5258, 178 Avenue du Dr Albert Schweitzer, F-33600 Pessac, France
| | - Yu-Tang Tsai
- Univ. Bordeaux, CNRS, Bordeaux INP, Institut des Sciences Moléculaires UMR 5255, 351 Cours de la Libération, F-33400 Talence, France.
- Univ. Bordeaux, CNRS, Bordeaux INP, ENSCPB, IMS, CNRS UMR 5218, F-33600 Pessac, France
| | - Lionel Hirsch
- Univ. Bordeaux, CNRS, Bordeaux INP, ENSCPB, IMS, CNRS UMR 5218, F-33600 Pessac, France
| | - Dario M Bassani
- Univ. Bordeaux, CNRS, Bordeaux INP, Institut des Sciences Moléculaires UMR 5255, 351 Cours de la Libération, F-33400 Talence, France.
| | - André Del Guerzo
- Univ. Bordeaux, CNRS, Bordeaux INP, Institut des Sciences Moléculaires UMR 5255, 351 Cours de la Libération, F-33400 Talence, France.
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Kimura S, Mori S, Yokoya M, Yamanaka M. Multiple Stimuli-Responsive Supramolecular Gel Formed from Modified Adenosine. Chem Pharm Bull (Tokyo) 2022; 70:443-447. [PMID: 35650041 DOI: 10.1248/cpb.c22-00134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Urea derivatives 1 and 2, synthesized from adenosine, were designed as low-molecular-weight gelators. Hydrophobic groups have been introduced into all or part of the hydroxy groups of the hydrophilic ribose moiety of 1 and 2 to control the solvophilicity of the molecules and their aggregates. Compound 2 selectively formed supramolecular gels in halogenated solvents such as chloroform and 1,2-dichloroethane. The supramolecular gel of 2 and chloroform was thermally stable and its gel-to-sol phase transition temperature was higher than the boiling point of chloroform. The physical properties of the supramolecular gel were investigated by determining its viscoelastic properties using a rheometer. The supramolecular gel realized multiple stimuli-responsive reversible gel-sol phase transitions. The supramolecular gel showed reversible phase transition by repeated warming-cooling cycles accompanying with the gel-sol transitions. The supramolecular gel could undergo five repeated mechano-responsive gel-sol transitions. Gel-to-sol phase transition could also be achieved by adding various anions to the supramolecular gel, such as tetrabutylammonium fluoride. Regelation was realized by adding boron trifluoride etherate to the fluoride ion containing sol. Addition of methanol to the supramolecular gel also induced gel-to-sol phase transition. Regelation was realized by adding molecular sieves 4 Å to the suspension.
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29
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Hanna SL, Debela TT, Mroz AM, Syed ZH, Kirlikovali KO, Hendon CH, Farha OK. Identification of a metastable uranium metal–organic framework isomer through non-equilibrium synthesis. Chem Sci 2022; 13:13032-13039. [PMID: 36425512 PMCID: PMC9667927 DOI: 10.1039/d2sc04783g] [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: 08/26/2022] [Accepted: 10/24/2022] [Indexed: 11/28/2022] Open
Abstract
Since the structure of supramolecular isomers determines their performance, rational synthesis of a specific isomer hinges on understanding the energetic relationships between isomeric possibilities. To this end, we have systematically interrogated a pair of uranium-based metal–organic framework topological isomers both synthetically and through density functional theory (DFT) energetic calculations. Although synthetic and energetic data initially appeared to mismatch, we assigned this phenomenon to the appearance of a metastable isomer, driven by levers defined by Le Châtelier's principle. Identifying the relationship between structure and energetics in this study reveals how non-equilibrium synthetic conditions can be used as a strategy to target metastable MOFs. Additionally, this study demonstrates how defined MOF design rules may enable access to products within the energetic phase space which are more complex than conventional binary (e.g., kinetic vs. thermodynamic) products. Identifying the relationship between structure and energetics in a uranium MOF isomer system reveals how non-equilibrium synthetic conditions can be used as a strategy to target metastable MOFs.![]()
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Affiliation(s)
- Sylvia L. Hanna
- Department of Chemistry and International Institute for Nanotechnology, Northwestern University, Evanston, IL 60208, USA
| | - Tekalign T. Debela
- Department of Chemistry and Biochemistry, University of Oregon, Eugene, OR 97403, USA
| | - Austin M. Mroz
- Department of Chemistry and Biochemistry, University of Oregon, Eugene, OR 97403, USA
| | - Zoha H. Syed
- Department of Chemistry and International Institute for Nanotechnology, Northwestern University, Evanston, IL 60208, USA
| | - Kent O. Kirlikovali
- Department of Chemistry and International Institute for Nanotechnology, Northwestern University, Evanston, IL 60208, USA
| | - Christopher H. Hendon
- Department of Chemistry and Biochemistry, University of Oregon, Eugene, OR 97403, USA
- Materials Science Institute, University of Oregon, Eugene, OR 97403, USA
| | - Omar K. Farha
- Department of Chemistry and International Institute for Nanotechnology, Northwestern University, Evanston, IL 60208, USA
- Department of Chemical and Biological Engineering, Northwestern University, Evanston, IL 60208, USA
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30
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Kravets K, Kravets M, Butkiewicz H, Kosiorek S, Sashuk V, Danylyuk O. Electrostatic co-assembly of pillar[n]pyridiniums and calix[4]arene in aqueous media. CrystEngComm 2022. [DOI: 10.1039/d2ce00232a] [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
The cationic pillar[n]pyridiniums and anionic p-sulfonatocalix[4]arene co-assemble into all-organic supersalts through encaging of the supercation units within/between the capsules emerged from superanion pairs. The encapsulation occures both in the solid...
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31
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Liao L, Liu R, Hu S, Jiang W, Chen Y, Zhong J, Jia X, Liu H, Luo X. Self-assembled sonogels formed from 1,4-naphthalenedicarbonyldinicotinic acid hydrazide. RSC Adv 2022; 12:20218-20226. [PMID: 35919589 PMCID: PMC9280287 DOI: 10.1039/d2ra01391f] [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: 03/02/2022] [Accepted: 07/05/2022] [Indexed: 11/21/2022] Open
Abstract
Ultrasound-induced gelation of a novel type of gelator, 1,4-naphthalenedicarbonyl- dinicotinic acid hydrazide, is reported. The gelator self-assembled into various architectures in different solvents.
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Affiliation(s)
- Lieqiang Liao
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, College of Chemistry and Chemical Engineering, Gannan Normal University, Ganzhou 341000, P. R. China
| | - Ruidong Liu
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, College of Chemistry and Chemical Engineering, Gannan Normal University, Ganzhou 341000, P. R. China
| | - Shuwen Hu
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, College of Chemistry and Chemical Engineering, Gannan Normal University, Ganzhou 341000, P. R. China
| | - Wenting Jiang
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, College of Chemistry and Chemical Engineering, Gannan Normal University, Ganzhou 341000, P. R. China
| | - Yali Chen
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, College of Chemistry and Chemical Engineering, Gannan Normal University, Ganzhou 341000, P. R. China
| | - Jinlian Zhong
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, College of Chemistry and Chemical Engineering, Gannan Normal University, Ganzhou 341000, P. R. China
| | - Xinjian Jia
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, College of Chemistry and Chemical Engineering, Gannan Normal University, Ganzhou 341000, P. R. China
| | - Huijin Liu
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, College of Chemistry and Chemical Engineering, Gannan Normal University, Ganzhou 341000, P. R. China
| | - Xuzhong Luo
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, College of Chemistry and Chemical Engineering, Gannan Normal University, Ganzhou 341000, P. R. China
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32
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Ghosh D, Górecki M, Pescitelli G, Damodaran KK. Enantioselective Gel Phase Synthesis of Metal–Organic Materials. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202107040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Dipankar Ghosh
- Department of Chemistry Science Institute University of Iceland Dunhagi 3 107 Reykjavík Iceland
| | - Marcin Górecki
- Institute of Organic Chemistry Polish Academy of Sciences Kasprzaka 44/52 St. 01-224 Warsaw Poland
| | - Gennaro Pescitelli
- Department of Chemistry and Industrial Chemistry University of Pisa Moruzzi 13 56124 Pisa Italy
| | - Krishna K. Damodaran
- Department of Chemistry Science Institute University of Iceland Dunhagi 3 107 Reykjavík Iceland
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33
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Ghosh D, Górecki M, Pescitelli G, Damodaran KK. Enantioselective Gel Phase Synthesis of Metal-Organic Materials. Angew Chem Int Ed Engl 2021; 60:24406-24410. [PMID: 34524731 DOI: 10.1002/anie.202107040] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Indexed: 11/06/2022]
Abstract
We report the asymmetric synthesis of homochiral metal-organic materials (MOMs) in chiral gels from achiral components. The enantioselectivity of MOMs depends on the chirality of the gel, whereas the synthesis performed in solution phase and achiral gels resulted in conglomerates.
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Affiliation(s)
- Dipankar Ghosh
- Department of Chemistry, Science Institute, University of Iceland, Dunhagi 3, 107, Reykjavík, Iceland
| | - Marcin Górecki
- Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44/52 St., 01-224, Warsaw, Poland
| | - Gennaro Pescitelli
- Department of Chemistry and Industrial Chemistry, University of Pisa, Moruzzi 13, 56124, Pisa, Italy
| | - Krishna K Damodaran
- Department of Chemistry, Science Institute, University of Iceland, Dunhagi 3, 107, Reykjavík, Iceland
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34
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Sudhakaran Jayabhavan S, Ghosh D, Damodaran KK. Making and Breaking of Gels: Stimuli-Responsive Properties of Bis(Pyridyl- N-oxide Urea) Gelators. Molecules 2021; 26:molecules26216420. [PMID: 34770831 PMCID: PMC8587056 DOI: 10.3390/molecules26216420] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 10/20/2021] [Accepted: 10/21/2021] [Indexed: 12/27/2022] Open
Abstract
The structural modification of existing supramolecular architecture is an efficient strategy to design and synthesize supramolecular gels with tunable and predictable properties. In this work, we have modified bis(pyridyl urea) compounds with different linkers, namely hexylene and butylene, to their corresponding bis(pyridyl-N-oxide urea). The gelation properties of both the parent and the modified compounds were studied, and the results indicated that modification of the 3-pyridyl moieties to the corresponding 3-pyridyl-N-oxides induced hydrogelation. The stability of the parent and modified compounds were evaluated by sol-gel transition temperature (Tgel) and rheological measurements, and single-crystal X-ray diffraction was used to analyze the solid-state interactions of the gelators. The morphologies of the dried gels were analyzed by scanning electron microscopy (SEM), which revealed that the structural modification did not induce any prominent effect on the gel morphology. The stimuli-responsive behavior of these gels in the presence of salts in DMSO/water was evaluated by rheological experiments, which indicated that the modified compounds displayed enhanced gel strength in most cases. However, the gel network collapsed in the presence of the chloride salts of aluminum(III), zinc(II), copper(II), and cadmium(II). The mechanical strength of the parent gels decreased in the presence of salts, indicating that the structural modification resulted in robust gels in most cases. The modified compounds formed gels below minimum gel concentration in the presence of various salts, indicating salt-induced gelation. These results show the making and breaking ability of the gel network in the presence of external stimuli (salts), which explains the potential of using LMWGs based on N-oxide moieties as stimuli-responsive materials.
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35
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Mulvee M, Vasiljevic N, Mann S, Patil AJ. Stimuli-Responsive Nucleotide-Amino Acid Hybrid Supramolecular Hydrogels. Gels 2021; 7:gels7030146. [PMID: 34563032 PMCID: PMC8482081 DOI: 10.3390/gels7030146] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Revised: 08/27/2021] [Accepted: 09/06/2021] [Indexed: 12/23/2022] Open
Abstract
The ability to assemble chemically different gelator molecules into complex supramolecular hydrogels provides excellent opportunities to construct functional soft materials. Herein, we demonstrate the formation of hybrid nucleotide–amino acid supramolecular hydrogels. These are generated by the silver ion (Ag+)-triggered formation of silver–guanosine monophosphate (GMP) dimers, which undergo self-assembly through non-covalent interactions to produce nanofilaments. This process results in a concomitant pH reduction due to the abstraction of a proton from the guanine residue, which triggers the in situ gelation of a pH-sensitive amino acid, N-fluorenylmethyloxycarbonyl tyrosine (FY), to form nucleotide–amino acid hybrid hydrogels. Alterations in the supramolecular structures due to changes in the assembly process are observed, with the molar ratio of Ag:GMP:FY affecting the assembly kinetics, and the resulting supramolecular organisation and mechanical properties of the hydrogels. Higher Ag:GMP stoichiometries result in almost instantaneous gelation with non-orthogonal assembly of the gelators, while at lower molar ratios, orthogonal assembly is observed. Significantly, by increasing the pH as an external stimulus, nanofilaments comprising FY can be selectively disassembled from the hybrid hydrogels. Our results demonstrate a simple approach for the construction of multicomponent stimuli-responsive supramolecular hydrogels with adaptable network and mechanical properties.
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Affiliation(s)
- Matthew Mulvee
- Centre for Organized Matter Chemistry, School of Chemistry, University of Bristol, Bristol BS8 1TS, UK;
- Bristol Centre for Functional Nanomaterials, University of Bristol, Tyndall Avenue, Bristol BS8 1TL, UK;
| | - Natasa Vasiljevic
- Bristol Centre for Functional Nanomaterials, University of Bristol, Tyndall Avenue, Bristol BS8 1TL, UK;
- School of Physics, University of Bristol, Bristol BS8 1TS, UK
| | - Stephen Mann
- Centre for Organized Matter Chemistry, School of Chemistry, University of Bristol, Bristol BS8 1TS, UK;
- Bristol Centre for Functional Nanomaterials, University of Bristol, Tyndall Avenue, Bristol BS8 1TL, UK;
- Correspondence: (S.M.); (A.J.P.)
| | - Avinash J. Patil
- Centre for Organized Matter Chemistry, School of Chemistry, University of Bristol, Bristol BS8 1TS, UK;
- Correspondence: (S.M.); (A.J.P.)
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36
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Shao L, Hu X, Sikligar K, Baker GA, Atwood JL. Coordination Polymers Constructed from Pyrogallol[4]arene-Assembled Metal-Organic Nanocapsules. Acc Chem Res 2021; 54:3191-3203. [PMID: 34329553 DOI: 10.1021/acs.accounts.1c00275] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Coordination polymers, commonly known as infinite crystalline lattices, are versatile networks and have diverse potential applications in the fields of gas storage, molecular separation, catalysis, optics, and drug delivery, among other areas. Secondary building blocks, mainly incorporating rigid polydentate organic linkers and metal ions or clusters, are commonly employed to construct coordination polymers. Recently, novel building blocks such as coordination polyhedra have been utilized as metal nodes to fabricate coordination polymers. Benefiting from the rigid porous structure of the coordination polyhedron, prefabricated designer "pores" can be incorporated in this type of coordinate polymer. In this Account, coordination polymers built by pyrogallol[4]arene-assembled metal-organic nanocapsules are summarized. This class of metal-organic nanocapsule possesses the following advantages that make them excellent candidates in the construction of coordination polymers: (i) Various geometrical shapes with different volumes of the inner cavities can be obtained from these capsules. Among them, the two main categories illustrated are dimeric and hexameric capsules, which comprise two and six pyrogallol[4]arenes units, respectively. (ii) A wide range of possible metal ions ranging from main group metals to transition metals and even lanthanides have been demonstrated to seam the capsules. Therefore, these coordination polymers can be endowed with fascinating functionalities such as magnetism, semiconductivity, luminescence, and radioactivity. (iii) Up to 24 metal ions have been successfully embedded on the surface of the nanocapsule, each a potential reaction site in the construction of coordination polymers, opening up pathways for the formation of multidimensional frameworks.In this Account, we focus primarily on the synthesis and the structural information on pyrogallol[4]arene-derived coordination polymers. Coordination polymers can be formed by introducing linkers with two coordination sites, using pyrogallol[4]arenes with coordination sites on the tail, or even via metal ions cross-linking with each other. Machine learning was recently developed to help us predict and screen the structures of the coordination polymers. With single crystal analysis in hand, detailed structural information provides a molecular-level perspective. Significantly, following the formation of coordination polymers, the overall shape and structure of the discrete metal-organic nanocapsules remains essentially unchanged, with full retention of the prefabricated pores. If a rigid linker is used to connect capsules, more than one lattice void with different volumes can be found within the framework. Thus, molecules with different sizes could potentially be encapsulated within these coordination polymers. In addition, flexible ligands can also be employed as linkers. For example, polymers have been employed as large linkers that transform the crystalline coordination polymers into polymer matrices, paving the way toward the synthesis of advanced functional materials. Overall, coordination polymers constructed with pyrogallol[4]arene-assembled metal-organic nanocapsules show wide diversity and tunability in structure and fascinating properties, as well as the promise of built-in functionality in the future.
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Affiliation(s)
- Li Shao
- Department of Chemistry, University of Missouri, Columbia, Missouri 65211, United States
| | - Xiangquan Hu
- Department of Chemistry, University of Missouri, Columbia, Missouri 65211, United States
| | - Kanishka Sikligar
- Department of Chemistry, University of Missouri, Columbia, Missouri 65211, United States
| | - Gary A. Baker
- Department of Chemistry, University of Missouri, Columbia, Missouri 65211, United States
| | - Jerry L. Atwood
- Department of Chemistry, University of Missouri, Columbia, Missouri 65211, United States
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37
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Zhang Y, Qin M, Xing C, Zhao C, Dou X, Feng CL. Rational Fabrication of Multiple Dimensional Assemblies from Tryptophan-Based Racemate. Chemistry 2021; 27:14911-14920. [PMID: 34347917 DOI: 10.1002/chem.202102145] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Indexed: 11/07/2022]
Abstract
Fabricating structural complex assemblies from simple amino acid-based derivatives is attracting great research interests due to their easy accessibility and preparation. However, the morphological regulation of racemates (an equimolar mixture of enantiomers) were largely overlooked. In this work, through rational modulation of kinetic and thermodynamic parameters, we achieved multiple dimensional architectures employing tryptophan-based racemate (RPWM). Upon assembling, 1D bundled nanofibers, 2D lamellar nanostructure and 3D urchin-like microflowers could be obtained depending on the solvents used. The corresponding morphology evolutions were successfully illustrated by changing the enantiomeric excess (ee) value. Moreover, for RPWM, uniform 0D nanospheres were formed in H 2 O under 4 ℃, which could spontaneously convert into lamella under ambient temperature. Taking advantages of its temperature-responsive phase change behavior, RPWM assemblies exhibited excellent removal efficiency for organic dye RhB, and could be reused for several consecutive cycles without significant changes in its removal performance. Taken together, it's rational to envision that the engineering of racemates assembly pathways can greatly increase the robustness in a wide variety of supramolecular materials and further lead to their blooming versatile applications.
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Affiliation(s)
- Yaqian Zhang
- Shanghai Jiao Tong University, School of Materials Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, P.R. China 200240, Shanghai, CHINA
| | - Minggao Qin
- Shanghai Jiao Tong University, School of Materials Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, P.R. China 200240, Shanghai, CHINA
| | - Chao Xing
- Shanghai Jiao Tong University, School of Materials Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, P.R. China 200240, Shanghai, CHINA
| | - Changli Zhao
- Shanghai Jiao Tong University, School of Materials Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, P.R. China 200240, Shanghai, CHINA
| | - Xiaoqiu Dou
- Shanghai Jiao Tong University, School of Materials Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, P.R. China 200240, Shanghai, CHINA
| | - Chuan Liang Feng
- Shanghai Jiaotong University, Materials Science and Engineering Technology, Dongchuan Road 800, 200240, Shanghai, CHINA
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Tan T, Guo Z, Wang Y, Ji Y, Hu J, Zhang Y. Gelation of a Pentapeptide in Alcohols. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:8961-8970. [PMID: 34297581 DOI: 10.1021/acs.langmuir.1c00841] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Properties of solvents such as polarity and H-bond-forming ability are critical for the formation of an organogel and have a significant impact on the gel behavior, as solvents are the majority of organogel systems. However, so far, there is still a lack of systematic studies regarding the effects of molecular structures of solvents on the characteristics of organogels. Motivated by revealing such a relationship, in this paper, we studied the morphologies of assemblies, gelation behaviors, and secondary structures of a pentapeptide termed EAF-5 in a wide variety of alcohols. The side chains and lengths of carbon chains of the solvent molecules were found to play a critical role in the self-assembly and gelation of EAF-5. EAF-5 was capable of self-assembling into fibers and entangling into a network in alcohols including ethanol, propanol, butanol, n-pentanol, and n-hexanol, which further immobilized the corresponding alcohols to form gels. In these organogels, increasing β-sheet secondary structures of the peptides were formed by introducing side chains and extending the length of primary alcohol molecules. We hypothesized that alcohol molecules with extended lengths and side chains reduced the gelator-solvent interactions and promoted the gelator-gelator interactions, resulting in the self-assembly of EAF-5 into fibril structures and development of gels. These findings provide a new sight into the interactions between gelators and solvents and are helpful for designing peptide-based organogelators.
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Affiliation(s)
- Tingyuan Tan
- Key Laboratory of Interfacial Physics and Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zhen Guo
- Key Laboratory of Interfacial Physics and Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yujiao Wang
- Key Laboratory of Interfacial Physics and Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yuwen Ji
- Key Laboratory of Interfacial Physics and Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jun Hu
- Key Laboratory of Interfacial Physics and Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
- Zhangjiang Lab, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China
| | - Yi Zhang
- Key Laboratory of Interfacial Physics and Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
- Zhangjiang Lab, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China
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Van Lommel R, De Borggraeve WM, De Proft F, Alonso M. Computational Tools to Rationalize and Predict the Self-Assembly Behavior of Supramolecular Gels. Gels 2021; 7:87. [PMID: 34287290 PMCID: PMC8293097 DOI: 10.3390/gels7030087] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Revised: 07/05/2021] [Accepted: 07/06/2021] [Indexed: 12/12/2022] Open
Abstract
Supramolecular gels form a class of soft materials that has been heavily explored by the chemical community in the past 20 years. While a multitude of experimental techniques has demonstrated its usefulness when characterizing these materials, the potential value of computational techniques has received much less attention. This review aims to provide a complete overview of studies that employ computational tools to obtain a better fundamental understanding of the self-assembly behavior of supramolecular gels or to accelerate their development by means of prediction. As such, we hope to stimulate researchers to consider using computational tools when investigating these intriguing materials. In the concluding remarks, we address future challenges faced by the field and formulate our vision on how computational methods could help overcoming them.
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Affiliation(s)
- Ruben Van Lommel
- Molecular Design and Synthesis, Department of Chemistry, KU Leuven, Celestijnenlaan 200F Leuven Chem & Tech, P.O. Box 2404, 3001 Leuven, Belgium;
- Eenheid Algemene Chemie (ALGC), Department of Chemistry, Vrije Universiteit Brussel (VUB), Pleinlaan 2, 1050 Brussels, Belgium;
| | - Wim M. De Borggraeve
- Molecular Design and Synthesis, Department of Chemistry, KU Leuven, Celestijnenlaan 200F Leuven Chem & Tech, P.O. Box 2404, 3001 Leuven, Belgium;
| | - Frank De Proft
- Eenheid Algemene Chemie (ALGC), Department of Chemistry, Vrije Universiteit Brussel (VUB), Pleinlaan 2, 1050 Brussels, Belgium;
| | - Mercedes Alonso
- Eenheid Algemene Chemie (ALGC), Department of Chemistry, Vrije Universiteit Brussel (VUB), Pleinlaan 2, 1050 Brussels, Belgium;
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Panja S, Adams DJ. Urea-Urease Reaction in Controlling Properties of Supramolecular Hydrogels: Pros and Cons. Chemistry 2021; 27:8928-8939. [PMID: 33861488 PMCID: PMC8360084 DOI: 10.1002/chem.202100490] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Indexed: 12/18/2022]
Abstract
Supramolecular hydrogels are useful in many areas such as cell culturing, catalysis, sensing, tissue engineering, drug delivery, environmental remediation and optoelectronics. The gels need specific properties for each application. The properties arise from a fibrous network that forms the matrix. A common method to prepare hydrogels is to use a pH change. Most methods result in a sudden pH jump and often lead to gels that are hard to reproduce and control. The urease-urea reaction can be used to control hydrogel properties by a uniform and controlled pH increase as well as to set up pH cycles. The reaction involves hydrolysis of urea by urease and production of ammonia which increases the pH. The rate of ammonia production can be controlled which can be used to prepare gels with differing properties. Herein, we show how the urease-urea reaction can be used for the construction of next generation functional materials.
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Affiliation(s)
- Santanu Panja
- School of ChemistryUniversity of GlasgowGlasgowG12 8QQUK
| | - Dave J. Adams
- School of ChemistryUniversity of GlasgowGlasgowG12 8QQUK
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Yokoya M, Kimura S, Yamanaka M. Urea Derivatives as Functional Molecules: Supramolecular Capsules, Supramolecular Polymers, Supramolecular Gels, Artificial Hosts, and Catalysts. Chemistry 2021; 27:5601-5614. [DOI: 10.1002/chem.202004367] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Revised: 11/11/2020] [Indexed: 01/02/2023]
Affiliation(s)
- Masashi Yokoya
- Meiji Pharmaceutical University (MPU) 2-522-1 Noshio Kiyose 204-8588 Japan
| | - Shinya Kimura
- Meiji Pharmaceutical University (MPU) 2-522-1 Noshio Kiyose 204-8588 Japan
| | - Masamichi Yamanaka
- Meiji Pharmaceutical University (MPU) 2-522-1 Noshio Kiyose 204-8588 Japan
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Tómasson DA, Ghosh D, Kurup MRP, Mulvee MT, Damodaran KK. Evaluating the role of a urea-like motif in enhancing the thermal and mechanical strength of supramolecular gels. CrystEngComm 2021. [DOI: 10.1039/d0ce01194k] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Enhanced thermal and mechanical strength in semicarbazone gels with a urea-like motif obtained by modifying the hydrogen bonding motif of the hydrazone compound.
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Affiliation(s)
| | - Dipankar Ghosh
- Department of Chemistry
- Science Institute
- University of Iceland
- 107 Reykjavík
- Iceland
| | | | | | - Krishna K. Damodaran
- Department of Chemistry
- Science Institute
- University of Iceland
- 107 Reykjavík
- Iceland
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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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Kushida S, Smarsly E, Yoshinaga K, Wacker I, Yamamoto Y, Schröder RR, Bunz UHF. Fast Response Organic Supramolecular Transistors Utilizing In-Situ π-Ion Gels. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2006061. [PMID: 33306238 PMCID: PMC11469335 DOI: 10.1002/adma.202006061] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2020] [Revised: 11/18/2020] [Indexed: 06/12/2023]
Abstract
Despite their remarkable charge carrier mobility when forming well-ordered fibers, supramolecular transistors often suffer from poor processability that hinders device integration, resulting in disappointing transconductance and output currents. Here, a new class of supramolecular transistors, π-ion gel transistors (PIGTs), is presented. An in situ π-ion gel, which is an unprecedented composite of semiconducting nanofibers and an enclosed ionic liquid, is directly employed as an active material and internal capacitor. In comparison to other supramolecular transistors, a PIGT displays a high transconductance (133 µS) and output current (139 µA at -6 V), while retaining a high charge-carrier mobility (4.2 × 10-2 cm2 V-1 s-1 ) and on/off ratio (3.7 × 104 ). Importantly, the unique device configuration and the high ionic conductivity associated with the distinct nanosegregation enables the fastest response among accumulation-mode electrochemical-based transistors (<20 µs). Considering the advantages of the absence of dielectric layers and the facile fabrication process, PIGT has great potential to be utilized in printed flexible devices. The device platform is widely applicable to various supramolecular assemblies, shedding light on the interdisciplinary research of supramolecular chemistry and organic electronics.
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Affiliation(s)
- Soh Kushida
- Organisch‐Chemisches InstitutRuprecht‐Karls‐Universität HeidelbergHeidelbergINF 270 69120Germany
- Centre for Advanced Materials (CAM)Ruprecht‐Karls‐Universität HeidelbergHeidelbergINF 225 69120Germany
- Faculty of Pure and Applied Sciences, and Tsukuba Research Center for Energy Materials Science (TREMS)University of Tsukuba1‐1‐1 TennoudaiTsukuba305‐8573Japan
| | - Emanuel Smarsly
- Organisch‐Chemisches InstitutRuprecht‐Karls‐Universität HeidelbergHeidelbergINF 270 69120Germany
| | - Kyota Yoshinaga
- Faculty of Pure and Applied Sciences, and Tsukuba Research Center for Energy Materials Science (TREMS)University of Tsukuba1‐1‐1 TennoudaiTsukuba305‐8573Japan
| | - Irene Wacker
- Centre for Advanced Materials (CAM)Ruprecht‐Karls‐Universität HeidelbergHeidelbergINF 225 69120Germany
| | - Yohei Yamamoto
- Faculty of Pure and Applied Sciences, and Tsukuba Research Center for Energy Materials Science (TREMS)University of Tsukuba1‐1‐1 TennoudaiTsukuba305‐8573Japan
| | - Rasmus R. Schröder
- Centre for Advanced Materials (CAM)Ruprecht‐Karls‐Universität HeidelbergHeidelbergINF 225 69120Germany
| | - Uwe H. F. Bunz
- Organisch‐Chemisches InstitutRuprecht‐Karls‐Universität HeidelbergHeidelbergINF 270 69120Germany
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Gainar A, Lai T, Oliveras‐González C, Pop F, Raynal M, Isare B, Bouteiller L, Linares M, Canevet D, Avarvari N, Sallé M. Tuning the Organogelating and Spectroscopic Properties of a
C
3
‐Symmetric Pyrene‐Based Gelator through Charge Transfer. Chemistry 2020; 27:2410-2420. [DOI: 10.1002/chem.202003914] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Revised: 10/22/2020] [Indexed: 11/09/2022]
Affiliation(s)
- Adrian Gainar
- CNRS Institut Parisien de Chimie Moléculaire Equipe Chimie des Polymères Sorbonne Université 4 Place Jussieu 75005 Paris France
| | - Thanh‐Loan Lai
- Laboratoire MOLTECH-Anjou UNIV. Angers, UMR CNRS 6200, SFR MATRIX 2 Bd Lavoisier 49045 Angers Cedex France
| | - Cristina Oliveras‐González
- Laboratoire MOLTECH-Anjou UNIV. Angers, UMR CNRS 6200, SFR MATRIX 2 Bd Lavoisier 49045 Angers Cedex France
| | - Flavia Pop
- Laboratoire MOLTECH-Anjou UNIV. Angers, UMR CNRS 6200, SFR MATRIX 2 Bd Lavoisier 49045 Angers Cedex France
| | - Matthieu Raynal
- CNRS Institut Parisien de Chimie Moléculaire Equipe Chimie des Polymères Sorbonne Université 4 Place Jussieu 75005 Paris France
| | - Benjamin Isare
- CNRS Institut Parisien de Chimie Moléculaire Equipe Chimie des Polymères Sorbonne Université 4 Place Jussieu 75005 Paris France
| | - Laurent Bouteiller
- CNRS Institut Parisien de Chimie Moléculaire Equipe Chimie des Polymères Sorbonne Université 4 Place Jussieu 75005 Paris France
| | - Mathieu Linares
- Laboratory of Organic Electronics and Group of Scientific Visualization, ITN Linköping University 60174 Norrköping Sweden
- Swedish e-Science Reseach Center (SeRC) Linkoping University 58183 Linköping Sweden
| | - David Canevet
- Laboratoire MOLTECH-Anjou UNIV. Angers, UMR CNRS 6200, SFR MATRIX 2 Bd Lavoisier 49045 Angers Cedex France
| | - Narcis Avarvari
- Laboratoire MOLTECH-Anjou UNIV. Angers, UMR CNRS 6200, SFR MATRIX 2 Bd Lavoisier 49045 Angers Cedex France
| | - Marc Sallé
- Laboratoire MOLTECH-Anjou UNIV. Angers, UMR CNRS 6200, SFR MATRIX 2 Bd Lavoisier 49045 Angers Cedex France
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Abstract
Agate—a spectacular form of SiO2 and a famous gemstone—is commonly characterized as banded chalcedony. In detail, chalcedony layers in agates can be intergrown or intercalated with macrocrystalline quartz, quartzine, opal-A, opal-CT, cristobalite and/or moganite. In addition, agates often contain considerable amounts of mineral inclusions and water as both interstitial molecular H2O and silanol groups. Most agate occurrences worldwide are related to SiO2-rich (rhyolites, rhyodacites) and SiO2-poor (andesites, basalts) volcanic rocks, but can also be formed as hydrothermal vein varieties or as silica accumulation during diagenesis in sedimentary rocks. It is assumed that the supply of silica for agate formation is often associated with late- or post-volcanic alteration of the volcanic host rocks. Evidence can be found in association with typical secondary minerals such as clay minerals, zeolites or iron oxides/hydroxides, frequent pseudomorphs (e.g., after carbonates or sulfates) as well as the chemical composition of the agates. For instance, elements of the volcanic rock matrix (Al, Ca, Fe, Na, K) are enriched, but extraordinary high contents of Ge (>90 ppm), B (>40 ppm) and U (>20 ppm) have also been detected. Calculations based on fluid inclusion and oxygen isotope studies point to a range between 20 and 230 °C for agate formation temperatures. The accumulation and condensation of silicic acid result in the formation of silica sols and proposed amorphous silica as precursors for the development of the typical agate micro-structure. The process of crystallisation often starts with spherulitic growth of chalcedony continuing into chalcedony fibers. High concentrations of lattice defects (oxygen and silicon vacancies, silanol groups) detected by cathodoluminescence (CL) and electron paramagnetic resonance (EPR) spectroscopy indicate a rapid crystallisation via an amorphous silica precursor under non-equilibrium conditions. It is assumed that the formation of the typical agate microstructure is governed by processes of self-organization. The resulting differences in crystallite size, porosity, kind of silica phase and incorporated color pigments finally cause the characteristic agate banding and colors.
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Ghosh D, Bjornsson R, Damodaran KK. Role of N-Oxide Moieties in Tuning Supramolecular Gel-State Properties. Gels 2020; 6:gels6040041. [PMID: 33233596 PMCID: PMC7709621 DOI: 10.3390/gels6040041] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Revised: 11/15/2020] [Accepted: 11/17/2020] [Indexed: 12/18/2022] Open
Abstract
The role of specific interactions in the self-assembly process of low molecular weight gelators (LMWGs) was studied by altering the nonbonding interactions responsible for gel formation via structural modification of the gelator/nongelator. This was achieved by modifying pyridyl moieties of bis(pyridyl) urea-based hydrogelator (4–BPU) and the isomer (3–BPU) to pyridyl N–oxide compounds (L1 and L2, respectively). The modification of the functional groups resulted in the tuning of the gelation properties of the parent gelator, which induced/enhanced the gelation properties. The modified compounds displayed better mechanical and thermal stabilities and the introduction of the N–oxide moieties had a prominent effect on the morphologies of the gel network, which was evident from the scanning electron microscopy (SEM) images. The effect of various interactions due to the introduction of N–oxide moieties in the gel network formation was analyzed by comparing the solid-state interactions of the compounds using single crystal X-ray diffraction and computational studies, which were correlated with the enhanced gelation properties. This study shows the importance of specific nonbonding interactions and the spatial arrangement of the functional groups in the supramolecular gel network formation.
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Affiliation(s)
- Dipankar Ghosh
- Department of Chemistry, Science Institute, University of Iceland, Dunhagi 3, 107 Reykjavík, Iceland;
| | - Ragnar Bjornsson
- Department of Inorganic Spectroscopy, Max–Planck–Institut für Chemische Energiekonversion, Campus de Stiftstrasse 34–36, 45470 Mülheim an der Ruhr, Germany;
| | - Krishna K. Damodaran
- Department of Chemistry, Science Institute, University of Iceland, Dunhagi 3, 107 Reykjavík, Iceland;
- Correspondence: ; Fax: +354-552-8911
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Rizzo C, Cancemi P, Mattiello L, Marullo S, D'Anna F. Naphthalimide Imidazolium-Based Supramolecular Hydrogels as Bioimaging and Theranostic Soft Materials. ACS APPLIED MATERIALS & INTERFACES 2020; 12:48442-48457. [PMID: 33070607 DOI: 10.1021/acsami.0c17149] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
1,8-Naphthalimide-based imidazolium salts differing for the alkyl chain length and the nature of the anion were synthesized and characterized to obtain fluorescent probes for bioimaging applications. First, their self-assembly behavior and gelling ability were investigated in water and water/dimethyl sulfoxide binary mixtures. Only salts having longer alkyl chains were able to give supramolecular hydrogels, whose properties were investigated by using a combined approach of fluorescence, resonance light scattering, and rheology measurements. Morphological information was obtained by scanning electron microscopy. In addition, conductive properties of organic salts in solution and gel state were analyzed. Imidazolium salts were successfully tested for their possible application as bioimaging and cytotoxic agents toward three cancer cell lines and a nontumoral epithelial cell line. Characterization of their behavior was performed by MTT and cell-based assays. Finally, the biological activity of hydrogels was also investigated. Collectively, our findings showed that naphthalimide-based imidazolium salts are promising theranostic agents and they were able to preserve their biological properties also in the gel phase.
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Affiliation(s)
- Carla Rizzo
- Dipartimento di Scienze Biologiche, Chimiche e Farmaceutiche, Sezione di Chimica, Viale delle Scienze, Università degli Studi di Palermo, Edificio 17, Palermo 90128, Italy
| | - Patrizia Cancemi
- Dipartimento di Scienze Biologiche, Chimiche e Farmaceutiche, Sezione di Biologia Cellulare, Viale delle Scienze, Università degli Studi di Palermo, Edificio 17, Palermo 90128, Italy
| | - Leonardo Mattiello
- Dipartimento Scienze di Base e Applicate per l'Ingegneria (SBAI), Sapienza Università di Roma, via Castro Laurenziano 7, Roma 00161, Italy
| | - Salvatore Marullo
- Dipartimento di Scienze Biologiche, Chimiche e Farmaceutiche, Sezione di Chimica, Viale delle Scienze, Università degli Studi di Palermo, Edificio 17, Palermo 90128, Italy
| | - Francesca D'Anna
- Dipartimento di Scienze Biologiche, Chimiche e Farmaceutiche, Sezione di Chimica, Viale delle Scienze, Università degli Studi di Palermo, Edificio 17, Palermo 90128, Italy
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50
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Kushida S, Kebrich S, Smarsly E, Strunk KP, Melzer C, Bunz UHF. Light-Emitting Electrochemical Cells Based on Conjugated Ion Gels. ACS APPLIED MATERIALS & INTERFACES 2020; 12:38483-38489. [PMID: 32805965 DOI: 10.1021/acsami.0c11951] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
π-conjugated gels are potentially useful for organic electronic applications. We present a π-conjugated ion gel, composed of substituted poly(para-phenyleneethynylene) (PPE) and an ionic liquid. This combination is well suited as an active material in a light-emitting electrochemical cells (LECs). The nanosegregated structure of the gels achieves a large interface between the polymer and ionic liquid (IL) and allows-by nature of its structure-facile ion conduction and continuous electrical conduction paths. Efficient doping significantly improves the response time. This concept should be applicable to other π-conjugated gels, and it allows the construction of gel-LECs.
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Affiliation(s)
- Soh Kushida
- Organisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 270, 69120 Heidelberg, FRG
| | - Sebastian Kebrich
- CAM, Centre for Advanced Materials, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 225, 69120 Heidelberg, Germany
| | - Emanuel Smarsly
- Organisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 270, 69120 Heidelberg, FRG
| | - Karl-Philipp Strunk
- CAM, Centre for Advanced Materials, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 225, 69120 Heidelberg, Germany
| | - Christian Melzer
- CAM, Centre for Advanced Materials, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 225, 69120 Heidelberg, Germany
| | - Uwe H F Bunz
- Organisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 270, 69120 Heidelberg, FRG
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