1
|
Kobetić R, Portada T, Dabić D. Clustering of biphenyl oxamide ions by chiral recognition. EUROPEAN JOURNAL OF MASS SPECTROMETRY (CHICHESTER, ENGLAND) 2024:14690667241275605. [PMID: 39196264 DOI: 10.1177/14690667241275605] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/29/2024]
Abstract
Gels created by self-assembly of small organic molecules are dynamic soft materials that have unique properties and demanding characterization. Four chiral gelators, with two valinol- or leucinoloxamido arms attached to the 2,2'-positions of the proatropisomeric biphenyl group were chosen to show that the electrospray ionization mass spectrometry (ESI-MS) could be used to differentiate the gelation feature of the chiral compounds 1-4 and also to shed light on the gelation processes. By inspecting the gelation of several solvents, we showed that 1 (R, R) proved to be the most efficient gelator, forming the largest observable assemblies in the gas phase. The strong intermolecular H-bonds hold single-charged assemblies consisting of up to five monomer units detectable by ESI MS. Enantiomer 1 (R, R) is a good gelator due to favorable intramolecular interactions that remain preserved in the gas phase. Compound 3 (meso) does not have gelator properties and detected signals of larger assemblies in the gas phase. So, the detected signals correlate with the conformations of the studied compounds. MS could be used to elucidate the preferential type of noncovalent interaction due to the chiral recognition. The study paves a novel way to investigate the influence of chirality on the molecular assembly and consequently macroscopic properties and functions of materials.
Collapse
Affiliation(s)
- Renata Kobetić
- Laboratory for Biomolecular Interactions and Spectroscopy, Division of Organic Chemistry and Biochemistry, Ruđer Bošković Institute, Zagreb, Croatia
| | - Tomislav Portada
- Laboratory for the Computational Design and Synthesis of Functional Materials, Division of Organic Chemistry and Biochemistry, Ruđer Bošković Institute, Zagreb, Croatia
| | - Dario Dabić
- Croatian Meteorological and Hydrological Service, Zagreb, Croatia
| |
Collapse
|
2
|
Smith DK. Supramolecular gels - a panorama of low-molecular-weight gelators from ancient origins to next-generation technologies. SOFT MATTER 2023; 20:10-70. [PMID: 38073497 DOI: 10.1039/d3sm01301d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2023]
Abstract
Supramolecular gels, self-assembled from low-molecular-weight gelators (LMWGs), have a long history and a bright future. This review provides an overview of these materials, from their use in lubrication and personal care in the ancient world, through to next-generation technologies. In academic terms, colloid scientists in the 19th and early 20th centuries first understood such gels as being physically assembled as a result of weak interactions, combining a solid-like network having a degree of crystalline order with a highly mobile liquid-like phase. During the 20th century, industrial scientists began using these materials in new applications in the polymer, oil and food industries. The advent of supramolecular chemistry in the late 20th century, with its focus on non-covalent interactions and controlled self-assembly, saw the horizons for these materials shifted significantly beyond their historic rheological applications, expanding their potential. The ability to tune the LMWG chemical structure, manipulate hierarchical assembly, develop multi-component systems, and introduce new types of responsive and interactive behaviour, has been transformative. Furthermore, the dynamics of these materials are increasingly understood, creating metastable gels and transiently-fueled systems. New approaches to shaping and patterning gels are providing a unique opportunity for more sophisticated uses. These supramolecular advances are increasingly underpinning and informing next-generation applications - from drug delivery and regenerative medicine to environmental remediation and sustainable energy. In summary, this article presents a panorama over the field of supramolecular gels, emphasising how both academic and industrial scientists are building on the past, and engaging new fundamental insights and innovative concepts to open up exciting horizons for their future use.
Collapse
Affiliation(s)
- David K Smith
- Department of Chemistry, University of York, Heslington, York, YO10 5DD, UK.
| |
Collapse
|
3
|
Tangsombun C, Smith DK. Fabricating Shaped and Patterned Supramolecular Multigelator Objects via Diffusion-Adhesion Gel Assembly. J Am Chem Soc 2023; 145:24061-24070. [PMID: 37885219 PMCID: PMC10636748 DOI: 10.1021/jacs.3c07376] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Revised: 10/17/2023] [Accepted: 10/17/2023] [Indexed: 10/28/2023]
Abstract
We report the use of acid-diffusion to assemble core-shell supramolecular gel beads with different low-molecular-weight gelators (LMWGs) in the core and shell. These gel beads grow a shell of dibenzylidenesorbitol-based DBS-COOH onto a core comprising DBS-CONHNH2 and agarose that has been loaded with acetic acid. Diffusion of the acid from the core triggers shell assembly. The presence of DBS-CONHNH2 enables the gel core to be loaded with metal nanoparticles (NPs) as acyl hydrazide reduces metal salts in situ. The pH-responsiveness of DBS-COOH allows responsive assembly of the shell with both temporal and spatial control. By fixing multiple gel beads in a Petri dish, the cores become linked to one another by the assembled DBS-COOH gel shell─a process we describe as diffusion-adhesion assembly. By controlling the geometry of the beads with respect to one another, it is possible to pattern the structures, and using a layer-by-layer approach, 3D objects can be fabricated. If some of the beads are loaded with basic DBS-carboxylate instead of CH3COOH, they act as a "sink" for diffusing protons, preventing DBS-COOH shell assembly in the close proximity. Those beads do not adhere to the remainder of the growing gel object and can be simply removed once diffusion-assembly is complete, acting as templates, and enabling the fabrication of 3D "imprinted" multigel architectures. Preloading the gel beads with AuNPs or AgNPs suspends these functional units within the cores at precisely defined locations within a wider gel object. In summary, this approach enables the dynamic fabrication of shaped and patterned gels with embedded metal NPs─such objects have potential next-generation applications in areas including soft nanoelectronics and regenerative medicine.
Collapse
Affiliation(s)
- Chayanan Tangsombun
- Department of Chemistry, University
of York, Heslington, York YO10 5DD, U.K.
| | - David K. Smith
- Department of Chemistry, University
of York, Heslington, York YO10 5DD, U.K.
| |
Collapse
|
4
|
Vujičić NŠ, Makarević J, Popović J, Štefanić Z, Žinić M. ( N-Alkyloxalamido)-Amino Acid Amides as the Superior Thixotropic Phase Selective Gelators of Petrol and Diesel Fuels. Gels 2023; 9:852. [PMID: 37998942 PMCID: PMC10670479 DOI: 10.3390/gels9110852] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2023] [Revised: 10/19/2023] [Accepted: 10/24/2023] [Indexed: 11/25/2023] Open
Abstract
(N-Alkyloxalamido)-amino acid amides 9-12 exhibit excellent gelation capacities toward some lipophilic solvents as well as toward the commercial fuels, petrol and diesel. Gelator 10 exhibits an excellent phase-selective gelation (PSG) ability and also possesses the highest gelation capacity toward petrol and diesel known to date, with minimum gelation concentration (MGC) values (%, w/v) as low as 0.012 and 0.015, respectively. The self-assembly motif of 10 in petrol and toluene gel fibres is determined from xerogel X-ray powder diffraction (XRPD) data via the simulated annealing procedure (SA) implemented in the EXPO2014 program and refined using the Rietveld method. The elucidated motif is strongly supported by the NMR (NOE and variable temperature) study of 10 toluene-d8 gel. It is shown that the triple unidirectional hydrogen bonding between gelator molecules involving oxalamide and carboxamide groups, together with their very low solubility, results in the formation of gel fibres of a very high aspect ratio (d = 10-30 nm, l = 0.6-1.3 μm), resulting in the as-yet unprecedented capacity of gelling commercial fuels. Rheological measurements performed at low concentrations of 10 confirmed the strength of the self-assembled network with the desired thixotropic properties that are advantageous for multiple applications. Instantaneous phase-selective gelation was obtained at room temperature through the addition of the 10 solution to the biphasic mixture of diesel and water in which the carrier solvent was congealed along with the diesel phase. The superior gelling properties and PSG ability of 10 may be used for the development of more efficient marine and surface oil spill recovery and waste water treatment technologies as well as the development of safer fuel storage and transport technologies.
Collapse
Affiliation(s)
- Nataša Šijaković Vujičić
- Ruđer Bošković Institute, Division of Organic Chemistry and Biochemistry, Bijenička 54, 10000 Zagreb, Croatia;
| | - Janja Makarević
- Ruđer Bošković Institute, Division of Organic Chemistry and Biochemistry, Bijenička 54, 10000 Zagreb, Croatia;
| | - Jasminka Popović
- Ruđer Bošković Institute, Division of Materials Physics, Laboratory for Synthesis and Crystallography of Functional Materials, Bijenička 54, 10000 Zagreb, Croatia;
| | - Zoran Štefanić
- Ruđer Bošković Institute, Division of Physical Chemistry, Laboratory for Chemical and Biological Crystallography, Bijenička 54, 10000 Zagreb, Croatia;
| | - Mladen Žinić
- Croatian Academy of Sciences and Arts, Nikole Šubića Zrinskog 11, 10000 Zagreb, Croatia
| |
Collapse
|
5
|
Malec K, Monaco S, Delso I, Nestorowicz J, Kozakiewicz-Latała M, Karolewicz B, Khimyak YZ, Angulo J, Nartowski KP. Unravelling the mechanisms of drugs partitioning phenomena in micellar systems via NMR spectroscopy. J Colloid Interface Sci 2023; 638:135-148. [PMID: 36736115 DOI: 10.1016/j.jcis.2023.01.063] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Accepted: 01/12/2023] [Indexed: 01/22/2023]
Abstract
Despite extensive use of micelles in materials and colloidal science, their supramolecular organization as well as host-guest interactions within these dynamic assemblies are poorly understood. Small guest molecules in the presence of micelles undergo constant exchange between a micellar aggregate and the surrounding solution, posing a considerable challenge for their molecular level characterisation. In this work we reveal the interaction maps between small guest molecules and surfactants forming micelles via novel applications of NMR techniques supported with state-of-the-art analytical methods used in colloidal science. Model micelles composed of structurally distinct surfactants (block non-ionic polymer Pluronic® F-127, non-ionic surfactant Tween 20 or Tween 80, and ionic surfactant sodium lauryl sulphate, SLS) were selected and loaded with model small molecules of biological relevance (i.e. the drugs fluconazole, FLU or indomethacin, IMC) known to have different partition coefficients. Molecular level organization of FLU or IMC within hydrophilic and hydrophobic domains of micellar aggregates was established using the combination of NMR methods (1D 1H NMR, 1D 19F NMR, 2D 1H-1H NOESY and 2D 1H-19F HOESY, and the multifrequency-STD NMR) and corroborated with molecular dynamics (MD) simulations. This is the first application of multifrequency-STD NMR to colloidal systems, enabling us to elucidate intricately detailed patterns of drug/micelle interactions in a single NMR experiment within minutes. Importantly, our results indicate that flexible surfactants, such as block copolymers and polysorbates, form micellar aggregates with a surface composed of both hydrophilic and hydrophobic domains and do not follow the classical core-shell model of the micelle. We propose that the magnitude of changes in 1H chemical shifts corroborated with interaction maps obtained from DEEP-STD NMR and 2D NMR experiments can be used as an indicator of the strength of the guest-surfactant interactions. This NMR toolbox can be adopted for the analysis of broad range of colloidal host-guest systems from soft materials to biological systems.
Collapse
Affiliation(s)
- Katarzyna Malec
- Department of Drug Form Technology, Faculty of Pharmacy, Wroclaw Medical University, 211a Borowska Str, 50-556 Wroclaw, Poland
| | - Serena Monaco
- School of Pharmacy, University of East Anglia, Chancellors Drive, NR4 7TJ Norwich, UK
| | - Ignacio Delso
- School of Pharmacy, University of East Anglia, Chancellors Drive, NR4 7TJ Norwich, UK
| | - Justyna Nestorowicz
- Department of Drug Form Technology, Faculty of Pharmacy, Wroclaw Medical University, 211a Borowska Str, 50-556 Wroclaw, Poland
| | - Marta Kozakiewicz-Latała
- Department of Drug Form Technology, Faculty of Pharmacy, Wroclaw Medical University, 211a Borowska Str, 50-556 Wroclaw, Poland
| | - Bożena Karolewicz
- Department of Drug Form Technology, Faculty of Pharmacy, Wroclaw Medical University, 211a Borowska Str, 50-556 Wroclaw, Poland
| | - Yaroslav Z Khimyak
- School of Pharmacy, University of East Anglia, Chancellors Drive, NR4 7TJ Norwich, UK.
| | - Jesús Angulo
- School of Pharmacy, University of East Anglia, Chancellors Drive, NR4 7TJ Norwich, UK; Instituto de Investigaciones Químicas (CSIC-US), Avda. Américo Vespucio, 49, Sevilla 41092, Spain.
| | - Karol P Nartowski
- Department of Drug Form Technology, Faculty of Pharmacy, Wroclaw Medical University, 211a Borowska Str, 50-556 Wroclaw, Poland; School of Pharmacy, University of East Anglia, Chancellors Drive, NR4 7TJ Norwich, UK.
| |
Collapse
|
6
|
Angulo-Pachón CA, Pozo V, Miravet JF. Alkaline cations dramatically control molecular hydrogelation by an amino acid-derived anionic amphiphile. J Colloid Interface Sci 2023; 635:524-534. [PMID: 36603535 DOI: 10.1016/j.jcis.2022.12.134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Revised: 12/21/2022] [Accepted: 12/26/2022] [Indexed: 12/29/2022]
Abstract
Understanding the factors that control the formation of (supra)molecular hydrogels permits a rational tuning of their properties and represents a primary challenge for developing smart biocompatible soft materials. Hydrogel formation by molecular amphiphilic anions at millimolar concentrations is counterintuitive, considering the solubility of these species in water. Here we report hydrogel formation by a simple anionic molecular amphiphile and a rationale for the fibrillisation process observed. The studied molecule, DodValSuc, consists of a 12C alkyl chain, an l-valine unit and a terminal succinic acid moiety. Hydrogelation depends to a large degree on the nature and concentration of the alkaline cations present in the medium (Li+, Na+ or K+). As a result, gelation efficiency and properties like thermal stability or rheology are highly tunable using the alkaline cation present or its concentration as variables. A detailed study is reported, which includes the determination of minimum gelation concentration (MGC) by tabletop rheology, critical micelle concentration (CMC) using pyrene as a fluorescent probe, thermal stability (solubility) by 1H NMR, the morphology of the fibres by transmission electron microscopy (TEM), crystallinity by X-ray diffraction (XRD) and gel strength by oscillatory rheology. Additionally, dynamic light scattering (DLS) was used to evaluate the size of the micelles and permitted monitoring of the fibrillisation process. Altogether, the results are consistent with the formation of micelles that experience head crystallisation and subsequent aggregation into crystalline fibres. The alkaline cations play a crucial role in providing the cement that glues together the gelator molecules, making their concentration a critical parameter for gelation efficiency and properties. Furthermore, the gelation-promoting effects are inversely correlated with the size of the cations so that the highest thermal stability and rheological strength were found for the hydrogels formed in the presence of Li+.
Collapse
Affiliation(s)
- César A Angulo-Pachón
- Department of Inorganic and Organic Chemistry, Universitat Jaume I, 12071 Castelló de la Plana, Spain
| | - Victor Pozo
- Department of Inorganic and Organic Chemistry, Universitat Jaume I, 12071 Castelló de la Plana, Spain
| | - Juan F Miravet
- Department of Inorganic and Organic Chemistry, Universitat Jaume I, 12071 Castelló de la Plana, Spain.
| |
Collapse
|
7
|
Marshall LJ, Wallace M, Mahmoudi N, Ciccone G, Wilson C, Vassalli M, Adams DJ. Hierarchical Composite Self-Sorted Supramolecular Gel Noodles. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2211277. [PMID: 36720202 DOI: 10.1002/adma.202211277] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Revised: 01/17/2023] [Indexed: 05/17/2023]
Abstract
Multicomponent supramolecular systems can be used to achieve different properties and new behaviors compared to their corresponding single component systems. Here, a two-component system is used, showing that a non-gelling component modifies the assembly of the gelling component, allowing access to co-assembled structures that cannot be formed from the gelling component alone. The systems are characterized across multiple length scales, from the molecular level by NMR and CD spectroscopy to the microstructure level by SANS and finally to the material level using nanoindentation and rheology. By exploiting the enhanced mechanical properties achieved through addition of the second component, multicomponent noodles are formed with superior mechanical properties to those formed by the single-component system. Furthermore, the non-gelling component can be triggered to crystallize within the multicomponent noodles, allowing the preparation of new types of hierarchical composite noodles.
Collapse
Affiliation(s)
- Libby J Marshall
- School of Chemistry, University of Glasgow, Glasgow, G12 8QQ, UK
| | - Matthew Wallace
- School of Pharmacy, University of East Anglia, Norwich Research Park, Norwich, NR4 7TJ, UK
| | - Najet Mahmoudi
- ISIS Neutron and Muon Source, Rutherford Appleton Laboratory, Didcot, OX11 0QX, UK
| | - Giuseppe Ciccone
- Centre for the Cellular Microenvironment, Advanced Research Centre, University of Glasgow, Glasgow, G11 6EW, UK
| | - Claire Wilson
- School of Chemistry, University of Glasgow, Glasgow, G12 8QQ, UK
| | - Massimo Vassalli
- Centre for the Cellular Microenvironment, Advanced Research Centre, University of Glasgow, Glasgow, G11 6EW, UK
| | - Dave J Adams
- School of Chemistry, University of Glasgow, Glasgow, G12 8QQ, UK
| |
Collapse
|
8
|
Unnikrishnan AC, Sushana Thennarasu A, Saveri P, Pandurangan S, Deshpande AP, Ayyadurai N, Shanmugam G. π-System Functionalization Transforms Amyloidogenic Peptide Fragment of Human Islet Amyloid Polypeptide into a Super Hydrogelator. Chem Asian J 2023; 18:e202201235. [PMID: 36567257 DOI: 10.1002/asia.202201235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Revised: 12/22/2022] [Accepted: 12/22/2022] [Indexed: 12/27/2022]
Abstract
While a considerable number of ultra-short/short amyloid peptides have been reported to form 3D supramolecular hydrogels, they all possess high minimum gelation concentration (MGC) (≥1 wt%), which preclude their applications. In this context, we demonstrate that functionalisation of a well-known amyloidogenic ultra-short peptide fragment NFGAIL (IAPf) of human Islet amyloid polypeptide with a π-system (Fluorenyl, Fm) at the N-terminus of the peptide (Fm-IAPf) yield not only highly thermostable hydrogel at physiological pH but also exhibited super gelator nature as the MGC (0.08 wt%) falls below 0.1 wt%. Various experimental results confirmed that aromatic π-π interactions from fluorenyl moieties and hydrogen bonding interactions between the IAPf drive the self-assembly/fibril formation. Fm-IAPf is the first super hydrogelator derived from amyloid-based ultra-short peptides, to the best of our knowledge. We strongly believe that this report, i. e., functionalization of an amyloid peptide with π-system, provides a lead to develop super hydrogelators from other amyloid-forming peptide fragments for their potential applications.
Collapse
Affiliation(s)
- Anagha C Unnikrishnan
- Organic & Bioorganic Chemistry Laboratory, Council of Scientific and Industrial Research (CSIR) -, Central Leather Research Institute (CLRI), Adyar, 600020, Chennai, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Abinaya Sushana Thennarasu
- Biological Materials Laboratory, Council of Scientific and Industrial Research (CSIR) -, Central Leather Research Institute (CLRI), Adyar, 600020, Chennai, India
| | - Puchalapalli Saveri
- Department of Chemical Engineering, Indian Institute of Technology Madras, Adyar, 600036, Chennai, India
| | - Suryalakshmi Pandurangan
- Biochemistry & Biotechnology Laboratory, Council of Scientific and Industrial Research (CSIR) -, Central Leather Research Institute (CLRI), Adyar, 600020, Chennai, India
| | - Abhijit P Deshpande
- Department of Chemical Engineering, Indian Institute of Technology Madras, Adyar, 600036, Chennai, India
| | - Niraikulam Ayyadurai
- Biochemistry & Biotechnology Laboratory, Council of Scientific and Industrial Research (CSIR) -, Central Leather Research Institute (CLRI), Adyar, 600020, Chennai, India
| | - Ganesh Shanmugam
- Organic & Bioorganic Chemistry Laboratory, Council of Scientific and Industrial Research (CSIR) -, Central Leather Research Institute (CLRI), Adyar, 600020, Chennai, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| |
Collapse
|
9
|
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.
Collapse
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.)
| |
Collapse
|
10
|
Du H, Liu J, Pan B, Yang HY, Liu GB, Lu K. Fabrication of the low molecular weight peptide-based hydrogels and analysis of gelation behaviors. Food Hydrocoll 2022. [DOI: 10.1016/j.foodhyd.2022.107751] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
|
11
|
Navarro-Barreda D, de Llanos R, Miravet JF, Galindo F. Photodynamic inactivation of Staphylococcus aureus in the presence of aggregation-prone photosensitizers based on BODIPY used at submicromolar concentrations. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY. B, BIOLOGY 2022; 235:112543. [PMID: 36113260 DOI: 10.1016/j.jphotobiol.2022.112543] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2022] [Revised: 07/29/2022] [Accepted: 08/08/2022] [Indexed: 06/15/2023]
Abstract
Two new brominated BODIPYs (1 and 2) bearing amino acid-based chains (l-valine for 1, and dimethyl-l-lysine for 2) were synthesized and characterized. In organic solvents, 1 and 2 were fully soluble and showed the photophysical properties expected for brominated BODIPY dyes, including efficient generation of singlet oxygen (1O2), upon irradiation. In contrast, in aqueous media, both compounds were prone to aggregation and the photo-induced generation of 1O2 was halted. Despite the lack of generation of this reactive species in aqueous media (in cuvette), both 1 and 2 have positive antimicrobial Photodynamic Inactivation (aPDI) effect. The activity against gram-positive Staphylococcus aureus and gram-negative Escherichia coli was determined through the inactivation curves, with a total energy dose of 5.3 J/cm2 (white light LED used as an energy source). Compound 2 was highly active against both gram-positive and gram-negative bacteria (3 log CFU/mL reduction was obtained at 0.16 μM for S. aureus and 2.5-5.0 μM for E. coli), whereas 1 was less effective to kill S. aureus (3 log CFU/mL at 0.32 μM) and ineffective for E. coli. The higher efficiency of 2, as compared to 1, to reduce the population of bacteria, can reside in the presence of a protonatable residue in 2, allowing a more effective interaction of this molecule with the cell walls of the microorganisms. In order to explain the lack of reactivity in pure aqueous media (in cuvette) and the contrasting good activity in the presence of bacterial cells it can be hypothesized that upon interaction with the walls of the microorganisms, the aggregated photosensitizers suffer a disaggregation process restoring the ability to generate 1O2, and hence leading to efficient photodynamic activity against these pathogenic microorganisms, in agreement with the similar effect observed recently for porphyrinoid photosensitizers.
Collapse
Affiliation(s)
- Diego Navarro-Barreda
- Departamento de Química Inorgánica y Orgánica, Universitat Jaume I, Avda. Sos Baynat s/n, 12071 Castellón, Spain
| | - Rosa de Llanos
- Unidad Predepartamental de Medicina, Universitat Jaume I, Avda. Sos Baynat s/n, 12071 Castellón, Spain
| | - Juan F Miravet
- Departamento de Química Inorgánica y Orgánica, Universitat Jaume I, Avda. Sos Baynat s/n, 12071 Castellón, Spain
| | - Francisco Galindo
- Departamento de Química Inorgánica y Orgánica, Universitat Jaume I, Avda. Sos Baynat s/n, 12071 Castellón, Spain.
| |
Collapse
|
12
|
Du H, Wang L, Lu K, Pan B, Liu J. YAFAF-Based Hydrogel: Characterization, Mechanism, and Factors Influencing Micro-organization. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:10669-10679. [PMID: 35976795 DOI: 10.1021/acs.jafc.2c04505] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The YAFAF-based hydrogel was a three-dimensional network cross-linked by grooved fiber bundles. The fiber bundles were formed by entanglement of fibrils with a diameter of 2 nm, and the surface of the fibrils also presented grooves. Spectroscopic analysis revealed that the main secondary structures were β-sheets and β-turns, which led to the grooved feature of fibrils. In comparison of the nuclear magnetic resonance spectra of peptide solutions at 313 and 277 K, the nuclear Overhauser effects can be clearly observed, indicating that hydrogen-bondings and π-π stacking interactions play important roles in self-assembly. The micro-organization of the self-assemblies was affected by the ratio of solvents (xA) remarkably. Unexpectedly, xA of 0.05 produced hollow spherical aggregates. The result of these investigations on the mechanism and organization of the YAFAF-based hydrogel can contribute to the development of strategies using hydrogels in the food industry.
Collapse
Affiliation(s)
- Heng Du
- Food Science and Technology, College of Food Science and Engineering, Henan University of Technology, 100 Lianhua Road, Zhengzhou, Henan 450001, People's Republic of China
| | - Lan Wang
- Peptides Chemistry, School of Chemical Engineering and Food Science, Zhengzhou University of Technology, 18 Yingcai Road, Zhengzhou, Henan 450044, People's Republic of China
| | - Kui Lu
- Peptides Chemistry, School of Chemical Engineering and Food Science, Zhengzhou University of Technology, 18 Yingcai Road, Zhengzhou, Henan 450044, People's Republic of China
| | - Boyuan Pan
- Peptides Chemistry, School of Chemistry and Chemical Engineering, Henan University of Technology, 100 Lianhua Road, Zhengzhou, Henan 450001, People's Republic of China
| | - Jun Liu
- Chemical Analysis, College of Food Science and Engineering, Institute of Grain and Oil Standardization, Henan University of Technology, 100 Lianhua Road, Zhengzhou, Henan 450001, People's Republic of China
| |
Collapse
|
13
|
Mattsson I, Lahtinen M, Sitdikov R, Wank B, Saloranta-Simell T, Leino R. Phase-selective low molecular weight organogelators derived from allylated d-mannose. Carbohydr Res 2022; 518:108596. [DOI: 10.1016/j.carres.2022.108596] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Revised: 05/10/2022] [Accepted: 05/17/2022] [Indexed: 11/02/2022]
|
14
|
Piras CC, Mahon CS, Genever PG, Smith DK. Shaping and Patterning Supramolecular Materials─Stem Cell-Compatible Dual-Network Hybrid Gels Loaded with Silver Nanoparticles. ACS Biomater Sci Eng 2022; 8:1829-1840. [PMID: 35364810 PMCID: PMC9092345 DOI: 10.1021/acsbiomaterials.1c01560] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
![]()
Hydrogels
with spatio-temporally
controlled properties are appealing
materials for biological and pharmaceutical applications. We make
use of mild acidification protocols to fabricate hybrid gels using
calcium alginate in the presence of a preformed thermally triggered
gel based on a low-molecular-weight gelator (LMWG) 1,3:2:4-di(4-acylhydrazide)-benzylidene
sorbitol (DBS-CONHNH2). Nonwater-soluble calcium carbonate
slowly releases calcium ions over time when exposed to an acidic pH,
triggering the assembly of the calcium alginate gel network. We combined
the gelators in different ways: (i) the LMWG was used as a template
to spatially control slow calcium alginate gelation within preformed
gel beads, using glucono-δ-lactone (GdL) to lower the pH; (ii)
the LMWG was used as a template to spatially control slow calcium
alginate gelation within preformed gel trays, using diphenyliodonium
nitrate (DPIN) as a photoacid to lower the pH, and spatial resolution
was achieved by masking. The dual-network hybrid gels display highly
tunable properties, and the beads are compatible with stem cell growth.
Furthermore, they preserve the LMWG function of inducing in situ silver
nanoparticle (AgNP) formation, which provides the gels with antibacterial
activity. These gels have potential for eventual regenerative medicine
applications in (e.g.) bone tissue engineering.
Collapse
Affiliation(s)
- Carmen C Piras
- Department of Chemistry, University of York, Heslington, York YO10 5DD, United Kingdom
| | - Clare S Mahon
- Department of Chemistry, University of York, Heslington, York YO10 5DD, United Kingdom
| | - Paul G Genever
- Department of Biology, University of York, Heslington, York YO10 5DD, United Kingdom
| | - David K Smith
- Department of Chemistry, University of York, Heslington, York YO10 5DD, United Kingdom
| |
Collapse
|
15
|
Self-Assembly of Alkylamido Isophthalic Acids toward the Design of a Supergelator: Phase-Selective Gelation and Dye Adsorption. Gels 2022; 8:gels8050285. [PMID: 35621583 PMCID: PMC9140382 DOI: 10.3390/gels8050285] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Revised: 04/27/2022] [Accepted: 05/02/2022] [Indexed: 02/01/2023] Open
Abstract
A new series of 5-alkylamido isophthalic acid (ISA) derivatives with varying single and twin alkyl chain lengths were designed and synthesized as potential supramolecular organogelators. 5-alkylamido ISAs with linear or branched alkyl tail-groups of different lengths were effective gelators for low polarity solvents. In particular, among the presented series, a derivative with a branched, 24 carbon atom tail-group behaves as a “supergelator” with up to twenty organic solvents forming gels that are highly stable over time. The gelation behavior was analyzed using Hansen solubility parameters, and the thermal stability and viscoelastic properties of select gels were characterized. Microscopy, spectroscopy, powder X-ray diffraction, and computer modeling studies were consistent with a hierarchical self-assembly process involving the formation of cyclic H-bonded hexamers via the ISA carboxylic acid groups, which stack into elementary fibers stabilized by H-bonding of the amide linker groups and π–π stacking of the aromatic groups. These new nanomaterials exhibited potential for the phase-selective gelation of oil from oil–water mixtures and dye uptake from contaminated water. The work expands upon the design and synthesis of supramolecular self-assembled nanomaterials and their application in water purification/remediation.
Collapse
|
16
|
Patterson AK, El-Qarra LH, Smith DK. Chirality-directed hydrogel assembly and interactions with enantiomers of an active pharmaceutical ingredient. Chem Commun (Camb) 2022; 58:3941-3944. [PMID: 35244630 DOI: 10.1039/d1cc06942j] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Enantiomers of the low-molecular-weight gelator (LMWG) DBS-CONHNH2, based on D- or L- 1,3 : 2,4-dibenzylidenesorbitol (DBS), were synthesised. Enantiomeric gels are equivalent, but when mixtures of enantiomers are used, although gels still form, they are weaker than homochiral gels. Nanoscale chirality is lost on adding even a small proportion of the opposite enantiomer - homochiral assembly underpins effective gelation. Enantiomeric gels encapsulate the two enantiomers of anti-inflammatory drug naproxen, with thermal & mechanical differences between diastereomeric systems. We hence demonstrate the importance of chirality in DBS assembly and its interactions with chiral additives.
Collapse
Affiliation(s)
- Anna K Patterson
- Department of Chemistry, University of York, Heslington, York, YO10 5DD, UK.
| | - Lamisse H El-Qarra
- Department of Chemistry, University of York, Heslington, York, YO10 5DD, UK.
| | - David K Smith
- Department of Chemistry, University of York, Heslington, York, YO10 5DD, UK.
| |
Collapse
|
17
|
3D printing of biocompatible low molecular weight gels: Imbricated structures with sacrificial and persistent N-alkyl-d-galactonamides. J Colloid Interface Sci 2022; 617:156-170. [PMID: 35276518 DOI: 10.1016/j.jcis.2022.02.076] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Revised: 02/17/2022] [Accepted: 02/18/2022] [Indexed: 12/25/2022]
Abstract
HYPOTHESIS We have shown earlier that low molecular weight gels based on N-heptyl-d-galactonamide hydrogels can be 3D printed by solvent exchange, but they tend to dissolve in the printing bath. We wanted to explore the printing of less soluble N-alkyl-d-galactonamides with longer alkyl chains. Less soluble hydrogels could be good candidates as cell culture scaffolds. EXPERIMENTS N-hexyl, N-octyl and N-nonyl-d-galactonamide solutions in dimethylsulfoxide are injected in a bath of water following patterns driven by a 2D drawing robot coupled to a z-platform. Solubilization of the gels with time has been determined and solubility of the gelators has been measured by NMR. Imbricated structures have been built with N-nonyl-d-galactonamide as a persistent ink and N-hexyl or N-heptyl-d-galactonamide as sacrificial inks. Human mesenchymal stem cells have been cultured on N-nonyl-d-galactonamide hydrogels prepared by cooling or by 3D printing. FINDINGS The conditions for printing well-resolved 3D patterns have been determined for the three gelators. In imbricated structures, the solubilization of N-hexyl or N-heptyl-d-galactonamide occurred after a few hours or days and gave channels. Human mesenchymal stem cells grown on N-nonyl-d-galactonamide hydrogels prepared by heating-cooling, which are stable and have a fibrillar microstructure, developed properly. 3D printed hydrogels, which microstructure is made of micrometric flakes, appeared too fragile to withstand cell growth.
Collapse
|
18
|
Yang X, Lu H, Tao Y, Zhang H, Wang H. Controlling supramolecular filament chirality of hydrogel by co-assembly of enantiomeric aromatic peptides. J Nanobiotechnology 2022; 20:77. [PMID: 35144637 PMCID: PMC8832752 DOI: 10.1186/s12951-022-01285-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2022] [Accepted: 01/27/2022] [Indexed: 11/30/2022] Open
Abstract
Supramolecular chirality plays an indispensable role in living and synthetic systems. However, the generation and control of filament chirality in the supramolecular hydrogel of short peptides remains challenging. In this work, as the first example, we report that the heterodimerization of the enantiomeric mixture controls the alignment, chirality, and stiffness of fibrous hydrogels formed by aromatic building blocks. The properties of the resulting racemic hydrogel could not be achieved by either pure enantiomer. Cryo-EM images indicate that the mixture of L and D enantiomers forms chiral nanofibers, the percentage of which can be readily controlled through stoichiometric co-assembly of heterochiral enantiomers. 2D NOESY NMR and diffusion-ordered NMR spectroscopy reveal that heterodimerization of enantiomers plays a crucial role in the formation of chiral nanofibers. Further mechanistic studies unravel the mechanism of supramolecular chirality formation in this two-component system. Molecular dynamics simulations confirm that the intermolecular hydrogen bond and π–π interaction of heterodimers play important roles in forming a chiral hydrogel. Furthermore, regulation of the adhesion and morphology of mammalian cells is achieved by tuning the relative ratio of L and D enantiomers at the same concentration. This work illustrates a novel strategy to control the supramolecular chirality of aromatic peptide hydrogels for materials science.
Collapse
Affiliation(s)
- Xuejiao Yang
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province, School of Science, Westlake University, Hangzhou, China.,Institute of Natural Sciences, Westlake Institute for Advanced Study, 18 Shilongshan Road, Hangzhou, 310024, Zhejiang Province, China
| | - Honglei Lu
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province, School of Science, Westlake University, Hangzhou, China.,Institute of Natural Sciences, Westlake Institute for Advanced Study, 18 Shilongshan Road, Hangzhou, 310024, Zhejiang Province, China
| | - Yinghua Tao
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province, School of Science, Westlake University, Hangzhou, China.,Institute of Natural Sciences, Westlake Institute for Advanced Study, 18 Shilongshan Road, Hangzhou, 310024, Zhejiang Province, China
| | - Hongyue Zhang
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province, School of Science, Westlake University, Hangzhou, China.,Institute of Natural Sciences, Westlake Institute for Advanced Study, 18 Shilongshan Road, Hangzhou, 310024, Zhejiang Province, China
| | - Huaimin Wang
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province, School of Science, Westlake University, Hangzhou, China. .,Institute of Natural Sciences, Westlake Institute for Advanced Study, 18 Shilongshan Road, Hangzhou, 310024, Zhejiang Province, China. .,Westlake Laboratory of Life Sciences and Biomedicine, School of Life Sciences, Westlake University, Hangzhou, Zhejiang, China.
| |
Collapse
|
19
|
Sonallya T, Sruthi L, Deshpande AP, Shanmugam G. Tweaking of supramolecular hydrogel property of single and two-component gel systems by a bifunctional molecule. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.116945] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
20
|
Navarro-Barreda D, Bedrina B, Galindo F, Miravet JF. Glutathione-responsive molecular nanoparticles from a dianionic bolaamphiphile and their use as carriers for targeted delivery. J Colloid Interface Sci 2021; 608:2009-2017. [PMID: 34752979 DOI: 10.1016/j.jcis.2021.10.142] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Revised: 10/21/2021] [Accepted: 10/24/2021] [Indexed: 12/26/2022]
Abstract
The formation in aqueous media of molecular nanoparticles from a bolaamphiphile (SucIleCsa) incorporating a disulfide moiety is described. The particles can be loaded efficiently with the lipophilic mitochondrial marker DiOC6(3), quenching its fluorescence, which is recovered upon reductive particle disassembly. DiOC6(3) transport into human colorectal adenocarcinoma cells (HT-29) is demonstrated using flow cytometry and confocal scanning fluorescence microscopy. A significant increase in intracellular fluorescence is observed when the cells are stimulated to produce glutathione (GSH). These new molecular nanoparticles can be considered a theranostic tool that simultaneously achieves targeted delivery of lipophilic substances and signals high levels of GSH.
Collapse
Affiliation(s)
- Diego Navarro-Barreda
- Department of Inorganic and Organic Chemistry, Universitat Jaume, 12071 Castelló de la Plana, Spain
| | - Begoña Bedrina
- Department of Inorganic and Organic Chemistry, Universitat Jaume, 12071 Castelló de la Plana, Spain
| | - Francisco Galindo
- Department of Inorganic and Organic Chemistry, Universitat Jaume, 12071 Castelló de la Plana, Spain.
| | - Juan F Miravet
- Department of Inorganic and Organic Chemistry, Universitat Jaume, 12071 Castelló de la Plana, Spain.
| |
Collapse
|
21
|
Mazzarotta A, Caputo TM, Raiola L, Battista E, Netti PA, Causa F. Small Oligonucleotides Detection in Three-Dimensional Polymer Network of DNA-PEG Hydrogels. Gels 2021; 7:90. [PMID: 34287281 PMCID: PMC8293047 DOI: 10.3390/gels7030090] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Revised: 07/01/2021] [Accepted: 07/03/2021] [Indexed: 11/23/2022] Open
Abstract
The control of the three-dimensional (3D) polymer network structure is important for permselective materials when specific biomolecule detection is needed. Here we investigate conditions to obtain a tailored hydrogel network that combines both molecular filtering and molecular capture capabilities for biosensing applications. Along this line, short oligonucleotide detection in a displacement assay is set within PEGDA hydrogels synthetized by UV radical photopolymerization. To provide insights on the molecular filter capability, diffusion studies of several probes (sulforhodamine G and dextrans) with different hydrodynamic radii were carried out using NMR technique. Moreover, fluorometric analyses of hybridization of DNA oligonucleotides inside PEGDA hydrogels shed light on the mechanisms of recognition in 3D, highlighting that mesh size and crowding effect greatly impact the hybridization mechanism on a polymer network. Finally, we found the best probe density and diffusion transport conditions to allow the specific oligonucleotide capture and detection inside PEGDA hydrogels for oligonucleotide detection and the filtering out of higher molecular weight molecules.
Collapse
Affiliation(s)
- Alessia Mazzarotta
- Center for Advanced Biomaterials for Healthcare@CRIB, Istituto Italiano di Tecnologia (IIT), Largo Barsanti e Matteucci 53, 80125 Naples, Italy; (A.M.); (T.M.C.); (L.R.); (P.A.N.)
| | - Tania Mariastella Caputo
- Center for Advanced Biomaterials for Healthcare@CRIB, Istituto Italiano di Tecnologia (IIT), Largo Barsanti e Matteucci 53, 80125 Naples, Italy; (A.M.); (T.M.C.); (L.R.); (P.A.N.)
| | - Luca Raiola
- Center for Advanced Biomaterials for Healthcare@CRIB, Istituto Italiano di Tecnologia (IIT), Largo Barsanti e Matteucci 53, 80125 Naples, Italy; (A.M.); (T.M.C.); (L.R.); (P.A.N.)
| | - Edmondo Battista
- Interdisciplinary Research Centre on Biomaterials (CRIB), Università degli Studi di Napoli “Federico II”, Piazzale Tecchio 80, 80125 Naples, Italy;
| | - Paolo Antonio Netti
- Center for Advanced Biomaterials for Healthcare@CRIB, Istituto Italiano di Tecnologia (IIT), Largo Barsanti e Matteucci 53, 80125 Naples, Italy; (A.M.); (T.M.C.); (L.R.); (P.A.N.)
- Interdisciplinary Research Centre on Biomaterials (CRIB), Università degli Studi di Napoli “Federico II”, Piazzale Tecchio 80, 80125 Naples, Italy;
- Dipartimento di Ingegneria Chimica del Materiali e della Produzione Industriale (DICMAPI), University “Federico II”, Piazzale Tecchio 80, 80125 Naples, Italy
| | - Filippo Causa
- Interdisciplinary Research Centre on Biomaterials (CRIB), Università degli Studi di Napoli “Federico II”, Piazzale Tecchio 80, 80125 Naples, Italy;
- Dipartimento di Ingegneria Chimica del Materiali e della Produzione Industriale (DICMAPI), University “Federico II”, Piazzale Tecchio 80, 80125 Naples, Italy
| |
Collapse
|
22
|
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.
Collapse
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;
| |
Collapse
|
23
|
Wang JT, Rodrigo AC, Patterson AK, Hawkins K, Aly MMS, Sun J, Al Jamal KT, Smith DK. Enhanced Delivery of Neuroactive Drugs via Nasal Delivery with a Self-Healing Supramolecular Gel. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2021; 8:e2101058. [PMID: 34029010 PMCID: PMC8292877 DOI: 10.1002/advs.202101058] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Revised: 04/19/2021] [Indexed: 05/04/2023]
Abstract
This paper reports the use of a self-assembling hydrogel as a delivery vehicle for the Parkinson's disease drug l-DOPA. Based on a two-component combination of an l-glutamine amide derivative and benzaldehyde, this gel has very soft rheological properties and self-healing characteristics. It is demonstrated that the gel can be formulated to encapsulate l-DOPA. These drug-loaded gels are characterized, and rapid release of the drug is obtained from the gel network. This drug-loaded hydrogel has appropriate rheological characteristics to be amenable for injection. This system is therefore tested as a vehicle for nasal delivery of neurologically-active drugs-a drug delivery strategy that can potentially avoid first pass liver metabolism and bypass the blood-brain barrier, hence enhancing brain uptake. In vitro tests indicate that the gel has biocompatibility with respect to nasal epithelial cells. Furthermore, animal studies demonstrate that the nasal delivery of a gel loaded with 3 H-labeled l-DOPA out-performed a simple intranasal l-DOPA solution. This is attributed to longer residence times of the gel in the nasal cavity resulting in increased blood and brain concentrations. It is demonstrated that the likely routes of brain penetration of intranasally-delivered l-DOPA gel involve the trigeminal and olfactory nerves connecting to other brain regions.
Collapse
Affiliation(s)
- Julie Tzu‐Wen Wang
- Institute of Pharmaceutical Science, School of Cancer and Pharmaceutical Sciences, Faculty of Life Science and MedicineKing's College London150 Stamford streetLondonSE1 9NHUK
| | - Ana C. Rodrigo
- Department of ChemistryUniversity of YorkHeslingtonYorkYO10 5DDUK
| | | | - Kirsten Hawkins
- Department of ChemistryUniversity of YorkHeslingtonYorkYO10 5DDUK
| | - Mazen M. S. Aly
- Institute of Pharmaceutical Science, School of Cancer and Pharmaceutical Sciences, Faculty of Life Science and MedicineKing's College London150 Stamford streetLondonSE1 9NHUK
| | - Jia Sun
- Institute of Pharmaceutical Science, School of Cancer and Pharmaceutical Sciences, Faculty of Life Science and MedicineKing's College London150 Stamford streetLondonSE1 9NHUK
| | - Khuloud T. Al Jamal
- Institute of Pharmaceutical Science, School of Cancer and Pharmaceutical Sciences, Faculty of Life Science and MedicineKing's College London150 Stamford streetLondonSE1 9NHUK
| | - David K. Smith
- Department of ChemistryUniversity of YorkHeslingtonYorkYO10 5DDUK
| |
Collapse
|
24
|
Schlichter L, Piras CC, Smith DK. Spatial and temporal diffusion-control of dynamic multi-domain self-assembled gels. Chem Sci 2021; 12:4162-4172. [PMID: 34163689 PMCID: PMC8179439 DOI: 10.1039/d0sc06862d] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
The dynamic assembly of a pH-responsive low-molecular-weight gelator (LMWG) within the pre-formed matrix of a second LMWG has been achieved via diffusion of an acid from a reservoir cut into the gel. Self-assembly of the acid-triggered LMWG as it converts from micellar aggregates at basic pH into gel nanofibers at lower pH values can be both spatially and temporally controlled. The pH-responsive LMWG has an impact on the stiffness of the pre-formed gel in the domains in which it assembles. When low acid concentrations are used, LMWG assembly is transient – after the initial proton diffusion phase, the pH rises and disassembly occurs as the system equilibrates. Re-application of additional acid as ‘fuel’ can then re-assemble the LMWG network. Using glucono-δ-lactone (which slowly hydrolyses to gluconic acid) instead of HCl gives slower, more spatially-restricted assembly, and creates longer-lasting pH gradients within the gel. The presence of an agarose polymer gel network improves the mechanical strength of the gels and appears to slightly enhance the rate of proton diffusion. More sophisticated reservoir shapes can be cut into these more mechanically robust gels, enabling the creation of diffusion waves with different geometries, and hence different patterns of LMWG activation. Multiple reservoirs can be used to create overlapping proton diffusion waves, hence achieving differentiated pH patterns in the gel. Using acid diffusion in this way within gels is an intriguing and powerful way of dynamic patterning. The ability to temporally-evolve spatially-resolved patterns using biocompatible weak acids, and the change in rheological performance of the triggered domains, suggest potential future applications of this strategy in tissue engineering. The assembly of a pH-sensitive LMWG within a pre-formed network of a second LMWG can be achieved by diffusing acids from pre-cut reservoirs, giving rise to patterned gels in which the rheological properties evolve with spatial and temporal control.![]()
Collapse
Affiliation(s)
- Lisa Schlichter
- Department of Chemistry, University of York Heslington York YO10 5DD UK
| | - Carmen C Piras
- Department of Chemistry, University of York Heslington York YO10 5DD UK
| | - David K Smith
- Department of Chemistry, University of York Heslington York YO10 5DD UK
| |
Collapse
|
25
|
Piras CC, Kay AG, Genever PG, Smith DK. Self-assembled low-molecular-weight gelator injectable microgel beads for delivery of bioactive agents. Chem Sci 2021; 12:3958-3965. [PMID: 34163666 PMCID: PMC8179440 DOI: 10.1039/d0sc06296k] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Accepted: 01/25/2021] [Indexed: 12/14/2022] Open
Abstract
We report the preparation of hybrid self-assembled microgel beads by combining the low molecular weight gelator (LMWG) DBS-CONHNH2 and the natural polysaccharide calcium alginate polymer gelator (PG). Microgel formulations based on LMWGs are extremely rare due to the fragility of the self-assembled networks and the difficulty of retaining any imposed shape. Our hybrid beads contain interpenetrated LMWG and PG networks, and are obtained by an emulsion method, allowing the preparation of spherical gel particles of controllable sizes with diameters in the mm or μm range. Microgels based on LMWG/alginate can be easily prepared with reproducible diameters <1 μm (ca. 800 nm). They are stable in water at room temperature for many months, and survive injection through a syringe. The rapid assembly of the LMWG on cooling plays an active role in helping control the diameter of the microgel beads. These LMWG microbeads retained the ability of the parent gel to deliver the bioactive molecule heparin, and in cell culture medium this enhanced the growth of human mesenchymal stem cells. Such microgels may therefore have future applications in tissue repair. This approach to fabricating LMWG microgels is a platform technology, which could potentially be applied to a variety of different functional LMWGs, and hence has wide-ranging potential.
Collapse
Affiliation(s)
- Carmen C Piras
- Department of Chemistry, University of York Heslington York YO10 5DD UK
| | - Alasdair G Kay
- Department of Biology, University of York Heslington York YO10 5DD UK
| | - Paul G Genever
- Department of Biology, University of York Heslington York YO10 5DD UK
| | - David K Smith
- Department of Chemistry, University of York Heslington York YO10 5DD UK
| |
Collapse
|
26
|
Martí-Centelles R, Dolz-Pérez I, De la O J, Ontoria-Oviedo I, Sepúlveda P, Nebot VJ, Vicent MJ, Escuder B. Two-Component Peptidic Molecular Gels for Topical Drug Delivery of Naproxen. ACS APPLIED BIO MATERIALS 2021. [DOI: 10.1021/acsabm.0c01422] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Rosa Martí-Centelles
- Departament de Química Inorgànica i Orgànica, Universitat Jaume I, Castelló 12071, Spain
| | - Irene Dolz-Pérez
- Polymer Therapeutics Laboratory, Centro de Investigación Príncipe Felipe, Valencia 46012, Spain
| | - Jaciel De la O
- Polypeptide Therapeutic Solutions S.L., 46980 Paterna, Spain
| | - Imelda Ontoria-Oviedo
- Regenerative Medicine and Heart Transplantation Unit, Instituto de Investigación Sanitaria La Fe, Valencia 46026, Spain
| | - Pilar Sepúlveda
- Regenerative Medicine and Heart Transplantation Unit, Instituto de Investigación Sanitaria La Fe, Valencia 46026, Spain
| | - Vicent J. Nebot
- Polypeptide Therapeutic Solutions S.L., 46980 Paterna, Spain
| | - Maria J. Vicent
- Polymer Therapeutics Laboratory, Centro de Investigación Príncipe Felipe, Valencia 46012, Spain
| | - Beatriu Escuder
- Departament de Química Inorgànica i Orgànica, Universitat Jaume I, Castelló 12071, Spain
| |
Collapse
|
27
|
Ramya KA, Reddy SMM, Shanmugam G, Deshpande AP. Fibrillar Network Dynamics during Oscillatory Rheology of Supramolecular Gels. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:13342-13355. [PMID: 33107300 DOI: 10.1021/acs.langmuir.0c02641] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Supramolecular gels are three-dimensional network structures formed by the hierarchical self-assembly of small molecules through weak noncovalent interactions. On the basis of the various interactions contributed by specific functional groups/moieties, gels with different architectures can be constructed that are smart to the external stimuli such as pH, type of solvent, stress, temperature, etc. In the present work, we explore the oscillatory shear response of supramolecular self-assembled systems formed by the low-molecular-weight (LMW) gelator based on difunctionalized amino acid, florenylmethoxycarbonyl (Fmoc)-lysine(Fmoc), Fm-K(Fm) in aqueous buffer solution, at two different pH (6 and 7.4). Small amplitude oscillatory shear (SAOS) reported weak frequency dependence of moduli indicating a gel-like network structure. Large amplitude oscillatory shear (LAOS) indicated flow regimes dictated by yielding and subsequent network dynamics analogous to cagelike soft glassy events reported for colloidal systems. The three interval thixotropy test (3iTT) indicated recovery of moduli due to regelation contributed by the reversible interactions. A generalized network model framework is utilized to investigate the transient network characteristics of the Fm-K(Fm) gels. The "network creation" and "network loss" rates were chosen as exponential functions of scaled shear stress (= |τ12(t)G|) to effectively describe the complex response. On the basis of the insights, possible mechanisms to explain the differences/similarities in the response at different pH are speculated. It is further illustrated that the modeling strategy can be extended to supramolecular gels of different classes because of the commonality/universality of their response features under oscillatory shear.
Collapse
Affiliation(s)
- Koduvayur A Ramya
- Department of Chemical Engineering, Indian Institute of Technology Madras, Chennai 600036, India
| | - Samala Murali Mohan Reddy
- Academy of Scientific and Innovative Research, Anusandhan Bhawan, 2 Rafi Marg, New Delhi 110001, India
| | - Ganesh Shanmugam
- Academy of Scientific and Innovative Research, Anusandhan Bhawan, 2 Rafi Marg, New Delhi 110001, India
| | - Abhijit P Deshpande
- Department of Chemical Engineering, Indian Institute of Technology Madras, Chennai 600036, India
| |
Collapse
|
28
|
Xu X, Zhou X, Qu L, Wang L, Song J, Wu D, Zhou W, Zhou X, Xiang H, Wang J, Liu J. Reversible Chromatic Change of Supramolecular Gels for Visual and Selective Chiral Recognition of Histidine. ACS APPLIED BIO MATERIALS 2020; 3:7236-7242. [PMID: 35019382 DOI: 10.1021/acsabm.0c01063] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
In the present work, a chemical reaction has been performed for supramolecular gels to achieve multiple-stimuli-responsive smart soft materials. Simple chiral binaphthalene-based receptors can condense with histidine (His) to yield a Schiff base, which would help to achieve visual chiral recognition of unprotected l/d-His through gel formation along with specific selectivity toward 20 amino acids. Through intermolecular hydrogen bonds, the resultant Schiff base molecules assemble with excess His molecules to form three-dimensional (3D) networks of metastable cross-linked nanospheres and stable nanofibers in EtOH/water and MeOH/water, respectively. Significantly, this condensation reaction exhibits unique reversible and chromatic phenomena between sol-gel phase transitions in EtOH/water, which provide a way to design chemical reaction-based multivisual-change supramolecular gels for sensing and switching applications.
Collapse
Affiliation(s)
- Xuemei Xu
- College of Chemistry, Sichuan University, Chengdu 610041, China
| | - Xueman Zhou
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China.,Laboratory for Aging Research and National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Lang Qu
- College of Chemistry, Sichuan University, Chengdu 610041, China
| | - Lei Wang
- College of Chemistry, Sichuan University, Chengdu 610041, China
| | - Jintong Song
- College of Chemistry, Sichuan University, Chengdu 610041, China
| | - Dehua Wu
- College of Chemistry, Sichuan University, Chengdu 610041, China
| | - Weilan Zhou
- College of Chemistry, Sichuan University, Chengdu 610041, China
| | - Xiangge Zhou
- College of Chemistry, Sichuan University, Chengdu 610041, China
| | - Haifeng Xiang
- College of Chemistry, Sichuan University, Chengdu 610041, China
| | - Jun Wang
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Jin Liu
- Laboratory for Aging Research and National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu 610041, China
| |
Collapse
|
29
|
Wu D, Song J, Qu L, Zhou W, Wang L, Zhou X, Xiang H. Ultralow-Molecular-Weight Stimuli-Responsive and Multifunctional Supramolecular Gels Based on Monomers and Trimers of Hydrazides. Chem Asian J 2020; 15:3370-3378. [PMID: 32893975 DOI: 10.1002/asia.202001041] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Indexed: 12/13/2022]
Abstract
The simpler, the better. A series of simple, neutral and ultralow-molecular-weight (MW: 140-200) hydrazide-derived supramolecular gelators have been designed and synthesized in two straightforward steps. For non-conjugated cyclohexane-derived hydrazides, their monomers can self-assemble to form gels through intermolecular hydrogen bonds and dipole-dipole interactions. Significantly, conjugated phthalhydrazide can self-aggregate into planar and circular trimers through intermolecular hydrogen bonds and then self-assemble to form gels through intermolecular π-π stacking interactions. It is interesting that these simple gelators exhibit unusual properties, such as self-healing, multi-response fluorescence, and visual and selective recognition of chiral (R)/(S)-1,1'-binaphthalene-2,2'-diamine and S2- through much different times of gel re-formation and blue-green color change, respectively. These results underline the importance of supramolecular gels and extend the scope of supramolecular gelators.
Collapse
Affiliation(s)
- Dehua Wu
- College of Chemistry, Sichuan University, Chengdu, 610041, P. R. China
| | - Jintong Song
- College of Chemistry, Sichuan University, Chengdu, 610041, P. R. China
| | - Lang Qu
- College of Chemistry, Sichuan University, Chengdu, 610041, P. R. China
| | - Weilan Zhou
- College of Chemistry, Sichuan University, Chengdu, 610041, P. R. China
| | - Lei Wang
- College of Chemistry, Sichuan University, Chengdu, 610041, P. R. China
| | - Xiangge Zhou
- College of Chemistry, Sichuan University, Chengdu, 610041, P. R. China
| | - Haifeng Xiang
- College of Chemistry, Sichuan University, Chengdu, 610041, P. R. China
| |
Collapse
|
30
|
Ramos J, Arufe S, Martin H, Rooney D, Elmes RBP, Erxleben A, Moreira R, Velasco-Torrijos T. Glycosyl squaramides, a new class of supramolecular gelators. SOFT MATTER 2020; 16:7916-7926. [PMID: 32724982 DOI: 10.1039/d0sm01075h] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Glycosyl squaramides were synthesised and evaluated as low molecular weight gelators. Amphiphilic glycosyl squaramides 5 and 6, with a C-16 aliphatic chain, formed thermoreversible gels in polar organic solvents and 1 : 1 ethanol/water mixtures with high efficiency. Rheological analysis showed these gels achieve their structural stability 120 h after gelation and were robust, making them particularly suitable for biomedical applications. The interactions between solvent and gelator strongly influence SAFiN (Self-Assembled Fibrillar Network) formation, critical gelation concentration (CGC) and subsequent gel structure, as evidenced by SEM imaging of xerogels. Spectroscopic studies indicate that H-bonding is involved in the self-assembly of the glycosyl squaramides in organic solvents, while hydrophobic interactions are the major driving force for gel formation in the presence of water. The compounds described herein are the first reported examples of carbohydrate-squaramide conjugates capable of forming supramolecular gels.
Collapse
Affiliation(s)
- Jessica Ramos
- Department of Chemistry, Maynooth University, Maynooth, Co., Kildare, Ireland.
| | | | | | | | | | | | | | | |
Collapse
|
31
|
Kapros A, Balázs A, Harmat V, Háló A, Budai L, Pintér I, Menyhárd DK, Perczel A. Configuration-Controlled Crystal and/or Gel Formation of Protected d-Glucosamines Supported by Promiscuous Interaction Surfaces and a Conformationally Heterogeneous Solution State. Chemistry 2020; 26:11643-11655. [PMID: 32333713 DOI: 10.1002/chem.202000882] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Revised: 04/17/2020] [Indexed: 11/10/2022]
Abstract
The configuration-dependent self-association mode of the two anomers of O-Ac,N-Fmoc-d-glucosamine, a foldamer building block, leading to gel and/or single crystal formation is described. The β-anomer of the sugar amino acid (2) forms a gel from various solvents (confirmed by SEM, rheology measurements, NMR, and ECD spectroscopy), whereas the α-anomer (1) does not form a gel with any solvent tested. Transition from the solution state to a gel is coupled to a concurrent shift of the Fmoc-groups: from a freely rotating (almost symmetrical) to a specific, asymmetric orientation. Whereas the crystal structure of the α-anomer is built as an evenly packed 3D system, the β-anomer forms a looser superstructure of well-packed 2D layers. Modeling indicates that in the lowest energy, but scarcely sampled conformer of the β-anomer, the Fmoc-group bends above the sugar moiety, stabilized by intramolecular CH↔π interactions between the aromatic rings. It is concluded that possessing an extended and promiscuous interaction surface and a conformationally heterogeneous solution state are among the basic requirements of gel formation for a candidate molecule.
Collapse
Affiliation(s)
- Anita Kapros
- Laboratory of Structural Chemistry and Biology, Institute of Chemistry, Eötvös Loránd University, Pázmány P. stny. 1/A, Budapest, 1117, Hungary
| | - Attila Balázs
- Laboratory of Structural Chemistry and Biology, Institute of Chemistry, Eötvös Loránd University, Pázmány P. stny. 1/A, Budapest, 1117, Hungary
| | - Veronika Harmat
- Laboratory of Structural Chemistry and Biology, Institute of Chemistry, Eötvös Loránd University, Pázmány P. stny. 1/A, Budapest, 1117, Hungary.,MTA-ELTE Protein Modelling Research Group, Pázmány P. stny. 1/A, Budapest, 1117, Hungary
| | - Adrienn Háló
- Laboratory of Structural Chemistry and Biology, Institute of Chemistry, Eötvös Loránd University, Pázmány P. stny. 1/A, Budapest, 1117, Hungary
| | - Lívia Budai
- Department of Pharmaceutics, Semmelweis University, Hőgyes Endre utca 7, Budapest, 1092, Hungary
| | - István Pintér
- Laboratory of Structural Chemistry and Biology, Institute of Chemistry, Eötvös Loránd University, Pázmány P. stny. 1/A, Budapest, 1117, Hungary
| | - Dóra K Menyhárd
- Laboratory of Structural Chemistry and Biology, Institute of Chemistry, Eötvös Loránd University, Pázmány P. stny. 1/A, Budapest, 1117, Hungary.,MTA-ELTE Protein Modelling Research Group, Pázmány P. stny. 1/A, Budapest, 1117, Hungary
| | - András Perczel
- Laboratory of Structural Chemistry and Biology, Institute of Chemistry, Eötvös Loránd University, Pázmány P. stny. 1/A, Budapest, 1117, Hungary.,MTA-ELTE Protein Modelling Research Group, Pázmány P. stny. 1/A, Budapest, 1117, Hungary
| |
Collapse
|
32
|
White LJ, Wark C, Croucher L, Draper ER, Hiscock JR. High-throughput characterisation of supramolecular gelation processes using a combination of optical density, fluorescence and UV-Vis absorption measurements. Chem Commun (Camb) 2020; 56:9557-9560. [PMID: 32691764 DOI: 10.1039/d0cc04033a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Herein, we showcase the use of high-throughput microplate reader methodologies for the characterisation of supramolecular gels. We demonstrate how UV-Vis absorption, optical density and fluorescence measurements can selectively define gel fibre assembly/disassembly processes, casting a new light on the construction of these materials.
Collapse
Affiliation(s)
- Lisa J White
- School of Physical Sciences, University of Kent, Canterbury, Kent, CT2 7NH, UK.
| | - Catherine Wark
- BMG Labtech, 8 Bell Business Park, Buckinghamshire, HP19 8JR, UK
| | | | - Emily R Draper
- School of Chemistry, University of Glasgow, Glasgow, G12 8QQ, UK
| | - Jennifer R Hiscock
- School of Physical Sciences, University of Kent, Canterbury, Kent, CT2 7NH, UK.
| |
Collapse
|
33
|
Piras CC, Mahon CS, Smith DK. Self-Assembled Supramolecular Hybrid Hydrogel Beads Loaded with Silver Nanoparticles for Antimicrobial Applications. Chemistry 2020; 26:8452-8457. [PMID: 32294272 PMCID: PMC7384024 DOI: 10.1002/chem.202001349] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Revised: 04/08/2020] [Indexed: 12/28/2022]
Abstract
This Full Paper reports the formation of silver (Ag) NPs within spatially resolved two-component hydrogel beads, which combine a low-molecular-weight gelator (LMWG) DBS-CONHNH2 and a polymer gelator (PG) calcium alginate. The AgNPs are formed through in situ reduction of AgI , with the resulting nanoparticle-loaded gels being characterised in detail. The antibacterial activity of the nanocomposite gel beads was tested against two drug-resistant bacterial strains, often associated with hospital-acquired infections: vancomycin-resistant Enterococcus faecium (VRE) and Pseudomonas aeruginosa (PA14), and the AgNP-loaded gels showed good antimicrobial properties against both types of bacteria. It is suggested that the gel bead format of these AgNP-loaded hybrid hydrogels makes them promising versatile materials for potential applications in orthopaedics or wound healing.
Collapse
Affiliation(s)
- Carmen C. Piras
- Department of ChemistryUniversity of YorkHeslingtonYorkYO10 5DDUK
| | - Clare S. Mahon
- Department of ChemistryUniversity of YorkHeslingtonYorkYO10 5DDUK
| | - David K. Smith
- Department of ChemistryUniversity of YorkHeslingtonYorkYO10 5DDUK
| |
Collapse
|
34
|
Kolari K, Bulatov E, Tatikonda R, Bertula K, Kalenius E, Haukka M. Self-healing, luminescent metallogelation driven by synergistic metallophilic and fluorine-fluorine interactions. SOFT MATTER 2020; 16:2795-2802. [PMID: 32104828 DOI: 10.1039/c9sm02186h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Square planar platinum(ii) complexes are attractive building blocks for multifunctional soft materials due to their unique optoelectronic properties. However, for soft materials derived from synthetically simple discrete metal complexes, achieving a combination of optical properties, thermoresponsiveness and excellent mechanical properties is a major challenge. Here, we report the rapid self-recovery of luminescent metallogels derived from platinum(ii) complexes of perfluoroalkyl and alkyl derivatives of terpyridine ligands. Using single crystal X-ray diffraction studies, we show that the presence of synergistic platinum-platinum (PtPt) metallopolymerization and fluorine-fluorine (FF) interactions are the major driving forces in achieving hierarchical superstructures. The resulting bright red gels showed the presence of highly entangled three-dimensional networks and helical nanofibres with both (P and M) handedness. The gels recover up to 87% of their original storage modulus even after several cycles under oscillatory step-strain rheological measurements showing rapid self-healing. The luminescence properties, along with thermo- and mechanoresponsive gelation, provide the potential to utilize synthetically simple discrete complexes in advanced optical materials.
Collapse
Affiliation(s)
- Kalle Kolari
- Department of Chemistry, University of Jyväskylä, P. O. Box 35, FI-40014 Jyväskylä, Finland.
| | | | | | | | | | | |
Collapse
|
35
|
Qin M, Zhang Y, Liu J, Xing C, Zhao C, Dou X, Feng C. Visible Enantiomer Discrimination via Diphenylalanine-Based Chiral Supramolecular Self-Assembly on Multiple Platforms. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:2524-2533. [PMID: 32090561 DOI: 10.1021/acs.langmuir.9b03449] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The development of enantioselective recognition is of great significance in medical science and pharmaceutical industry, which associates with the molecular recognition phenomenon widely observed in biological systems. In particular, the facile and straight achievement of visual enantioselective recognition has been drawing increasing consideration, but it is still a challenge. Herein, a heterochiral diphenylalanine-based gelator (LFDF) is synthesized, presenting left-handed nanofibers during self-assembly in ethanol, which accomplishes the phenylalaninol enantiomer recognition on multiple platforms. When adding l- or d-phenylalaninol into LFDF supramolecular solution followed by ultrasonic treatment, precipitate and gel are formed, respectively. Meanwhile, LFDF supramolecular gel completely collapses in a minute after dropping l-phenylalaninol, while the gel almost remains when d-type is employed. Moreover, a fluorescent supramolecular xerogel (ThT-LFDF) is fabricated by combining the LFDF gelator with thioflavine T (ThT), which could detect l-phenylalaninol accompanying with fluorescence quenching while d-type with barely decreasing. And the ThT-LFDF xerogel system shows a good sensitivity (reaches to ppm) for the detection of l-phenylalaninol. It is found that the chirality of the assembled nanofibers, as well as amino and carboxyl of phenylalaninol, plays a critical role on the discrimination process. The multiple and visible enantioselective recognition of phenylalaninol through chiral supramolecular self-assemblies shows potential applications in the fields of medical science and pharmaceutical industry.
Collapse
Affiliation(s)
- Minggao Qin
- State Key Lab of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, P. R. China
| | - Yaqian Zhang
- State Key Lab of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, P. R. China
| | - Jinying Liu
- State Key Lab of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, P. R. China
| | - Chao Xing
- State Key Lab of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, P. R. China
| | - Changli Zhao
- State Key Lab of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, P. R. China
| | - Xiaoqiu Dou
- State Key Lab of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, P. R. China
| | - Chuanliang Feng
- State Key Lab of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, P. R. China
| |
Collapse
|
36
|
Hawkins K, Patterson AK, Clarke PA, Smith DK. Catalytic Gels for a Prebiotically Relevant Asymmetric Aldol Reaction in Water: From Organocatalyst Design to Hydrogel Discovery and Back Again. J Am Chem Soc 2020; 142:4379-4389. [PMID: 32023044 PMCID: PMC7146862 DOI: 10.1021/jacs.9b13156] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2019] [Indexed: 12/14/2022]
Abstract
This paper reports an investigation into organocatalytic hydrogels as prebiotically relevant systems. Gels are interesting prebiotic reaction media, combining heterogeneous and homogeneous characteristics with a structurally organized active "solid-like" catalyst separated from the surrounding environment, yet in intimate contact with the solution phase and readily accessible via "liquid-like" diffusion. A simple self-assembling glutamine amide derivative 1 was initially found to catalyze a model aldol reaction between cyclohexanone and 4-nitrobenzaldehyde, but it did not maintain its gel structure during reaction. In this study, it was observed that compound 1 could react directly with the benzaldehyde to form a hydrogel in situ based on Schiff base 2 as a low-molecular-weight gelator (LMWG). This new dynamic gel is a rare example of a two-component self-assembled LMWG hydrogel and was fully characterized. It was demonstrated that glutamine amide 1 could select an optimal aldehyde component and preferentially assemble from mixtures. In the hunt for an organocatalyst, reductive conditions were applied to the Schiff base to yield secondary amine 3, which is also a highly effective hydrogelator at very low loadings with a high degree of nanoscale order. Most importantly, the hydrogel based on 3 catalyzed the prebiotically relevant aldol dimerization of glycolaldehyde to give threose and erythrose. In buffered conditions, this reaction gave excellent conversions, good diastereoselectivity, and some enantioselectivity. Catalysis using the hydrogel of 3 was much better than that using non-assembled 3-demonstrating a clear benefit of self-assembly. The results suggest that hydrogels offer a potential strategy by which prebiotic reactions can be promoted using simple, prebiotically plausible LMWGs that can selectively self-organize from complex mixtures. Such processes may have been of prebiotic importance.
Collapse
Affiliation(s)
- Kirsten Hawkins
- Department of Chemistry, University
of York, Heslington, York YO10 5DD, U.K.
| | - Anna K. Patterson
- Department of Chemistry, University
of York, Heslington, York YO10 5DD, U.K.
| | - Paul A. Clarke
- Department of Chemistry, University
of York, Heslington, York YO10 5DD, U.K.
| | - David K. Smith
- Department of Chemistry, University
of York, Heslington, York YO10 5DD, U.K.
| |
Collapse
|
37
|
Navarro‐Barreda D, Angulo‐Pachón CA, Bedrina B, Galindo F, Miravet JF. A Dual Stimuli Responsive Supramolecular Gel Provides Insulin Hydrolysis Protection and Redox‐Controlled Release of Actives. MACROMOL CHEM PHYS 2020. [DOI: 10.1002/macp.201900419] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Diego Navarro‐Barreda
- Department of Inorganic and Organic ChemistryUniversity Jaume I 12071 Castelló de la Plana Spain
| | - César A. Angulo‐Pachón
- Department of Inorganic and Organic ChemistryUniversity Jaume I 12071 Castelló de la Plana Spain
| | - Begoña Bedrina
- Department of Inorganic and Organic ChemistryUniversity Jaume I 12071 Castelló de la Plana Spain
| | - Francisco Galindo
- Department of Inorganic and Organic ChemistryUniversity Jaume I 12071 Castelló de la Plana Spain
| | - Juan F. Miravet
- Department of Inorganic and Organic ChemistryUniversity Jaume I 12071 Castelló de la Plana Spain
| |
Collapse
|
38
|
Cornwell DJ, Smith DK. Photo-patterned multi-domain multi-component hybrid hydrogels. Chem Commun (Camb) 2020; 56:7029-7032. [DOI: 10.1039/d0cc03004j] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
This paper explores multi-component gelation systems containing two low-molecular-weight gelators, one polymer gelator and three different triggers.
Collapse
|
39
|
Edkins RM, Appel M, Seydel T, Edkins K. The modifying effect of supramolecular gel fibres on the diffusion of paracetamol and ibuprofen sodium on the picosecond timescale. Phys Chem Chem Phys 2020; 22:10838-10844. [DOI: 10.1039/d0cp01240h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Quasi-elastic neutron spectroscopy reveals that model drug molecules diffuse faster in a supramolecular gel than in solution.
Collapse
Affiliation(s)
- Robert M. Edkins
- WestCHEM Department of Pure and Applied Chemistry
- Thomas Graham Building
- University of Strathclyde
- Glasgow G1 1XL
- UK
| | - Markus Appel
- Institut Max von Laue – Paul Langevin (ILL)
- F-38042 Grenoble
- France
| | - Tilo Seydel
- Institut Max von Laue – Paul Langevin (ILL)
- F-38042 Grenoble
- France
| | - Katharina Edkins
- Division of Pharmacy and Optometry
- University of Manchester
- Manchester M13 9PT
- UK
| |
Collapse
|
40
|
Shapira R, Katalan S, Edrei R, Eichen Y. Chirality dependent inverse-melting and re-entrant gelation in α-cyclodextrin/1-phenylethylamine mixtures. RSC Adv 2020; 10:39195-39203. [PMID: 35518437 PMCID: PMC9057694 DOI: 10.1039/d0ra07643k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2020] [Accepted: 10/16/2020] [Indexed: 01/14/2023] Open
Abstract
Solutions of cyclohexakis-(1→4)-α-d-glucopyranosyl, α-cyclodextrin, αCD, in R-(+)-1-phenylethylamine, αCD/R-PEA, and S-(−)-1-phenylethylamine, αCD/S-PEA, display abnormal phase transitions that strongly depend on supramolecular diastereomeric interactions. While αCD/R-PEA mixtures show one sol–gel inverse-melting phase transition, αCD/S-PEA mixtures show temperature dependent gel–sol–gel re-entrant behavior. NMR, Raman spectroscopy, microscopy and X-ray scattering measurements reveal that hydrogen bond weakening in solution, as well as changes in crystal composition are responsible for entropy increase and gel formation upon heating. Solutions of α-cyclodextrin in chiral 1-phenylethylamine display abnormal phase transitions. Depending on supramolecular diastereomeric interactions, inverse-melting and re-entrant gels are formed.![]()
Collapse
Affiliation(s)
- Reut Shapira
- Schulich Faculty of Chemistry
- Technion – Israel Institute of Technology
- 3200008 Haifa
- Israel
| | - Sapir Katalan
- Schulich Faculty of Chemistry
- Technion – Israel Institute of Technology
- 3200008 Haifa
- Israel
| | - Rachel Edrei
- Schulich Faculty of Chemistry
- Technion – Israel Institute of Technology
- 3200008 Haifa
- Israel
| | - Yoav Eichen
- Schulich Faculty of Chemistry
- Technion – Israel Institute of Technology
- 3200008 Haifa
- Israel
| |
Collapse
|
41
|
Legrand A, Craig GA, Bonneau M, Minami S, Urayama K, Furukawa S. Understanding the multiscale self-assembly of metal-organic polyhedra towards functionally graded porous gels. Chem Sci 2019; 10:10833-10842. [PMID: 32110353 PMCID: PMC7012067 DOI: 10.1039/c9sc04543k] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Accepted: 10/31/2019] [Indexed: 12/19/2022] Open
Abstract
Spatial heterogeneity and gradients within porous materials are key for controlling their mechanical properties and mass/energy transport, both in biological and synthetic materials. However, it is still challenging to induce such complexity in well-defined microporous materials such as crystalline metal-organic frameworks (MOFs). Here we show a method to generate a continuous gradient of porosity over multiple length scales by taking advantage of the amorphous nature of supramolecular polymers based on metal-organic polyhedra (MOPs). First, we use time-resolved dynamic light scattering (TRDLS) to elucidate the mechanism of hierarchical self-assembly of MOPs into colloidal gels and to understand the relationship between the MOP concentrations and the architecture of the resulting colloidal networks. These features directly impact the viscoelastic response of the gels and their mechanical strength. We then show that gradients of stiffness and porosity can be created within the gel by applying centrifugal force at the point of colloidal aggregation. These results with the creation of asymmetric and graded pore configuration in soft materials could lead to the emergence of advanced properties that are coupled to asymmetric molecule/ion transport as seen in biological systems.
Collapse
Affiliation(s)
- Alexandre Legrand
- Institute for Integrated Cell-Material Sciences (WPI-iCeMS) , Kyoto University , Yoshida, Sakyo-ku , Kyoto 606-8501 , Japan .
| | - Gavin A Craig
- Institute for Integrated Cell-Material Sciences (WPI-iCeMS) , Kyoto University , Yoshida, Sakyo-ku , Kyoto 606-8501 , Japan .
| | - Mickaele Bonneau
- Institute for Integrated Cell-Material Sciences (WPI-iCeMS) , Kyoto University , Yoshida, Sakyo-ku , Kyoto 606-8501 , Japan .
| | - Saori Minami
- Department of Macromolecular Science and Engineering , Kyoto Institute of Technology , Matsugasaki, Sakyo-ku , Kyoto 606-8585 , Japan
| | - Kenji Urayama
- Department of Macromolecular Science and Engineering , Kyoto Institute of Technology , Matsugasaki, Sakyo-ku , Kyoto 606-8585 , Japan
| | - Shuhei Furukawa
- Institute for Integrated Cell-Material Sciences (WPI-iCeMS) , Kyoto University , Yoshida, Sakyo-ku , Kyoto 606-8501 , Japan .
- Department of Synthetic Chemistry and Biological Chemistry , Graduate School of Engineering , Kyoto University , Katsura, Nishikyo-ku , Kyoto 615-8510 , Japan
| |
Collapse
|
42
|
|
43
|
Piras CC, Smith DK. Sequential Assembly of Mutually Interactive Supramolecular Hydrogels and Fabrication of Multi-Domain Materials. Chemistry 2019; 25:11318-11326. [PMID: 31237367 DOI: 10.1002/chem.201902158] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2019] [Revised: 06/19/2019] [Indexed: 11/09/2022]
Abstract
A two-component self-sorting hydrogel based on acylhydrazide and carboxylic acid derivatives of 1,3:2,4-dibenzylidene-d-sorbitol (DBS-CONHNH2 and DBS-COOH) is reported. A heating-cooling cycle induces the self-assembly of DBS-CONHNH2 , followed by the self-assembly of DBS-COOH induced by decreasing pH. Although the networks are formed sequentially, there is spectroscopic evidence of interactions between them, which impact on the mechanical properties and significantly enhance the ability of these low-molecular-weight gelators (LMWGs) to form gels when mixed. The DBS-COOH network can be switched "off" and "on" within the two-component gel through a pH change. By using a photo-acid generator, the two-component gel can be prepared combining the thermal trigger with photo-irradiation. Photo-patterned self-assembly of DBS-COOH within a pre-formed DBS-CONHNH2 gel under a mask yields spatially controlled multi-domain gels. Different gel domains can have different functions, for example, controlling the rate of release of heparin incorporated into the gel, or directing gold nanoparticle assembly. Such photo-patterned multi-component hydrogels have potential applications in regenerative medicine or bio-nano-electronics.
Collapse
Affiliation(s)
- Carmen C Piras
- Department of Chemistry, University of York, Heslington, York, YO10 5DD, UK
| | - David K Smith
- Department of Chemistry, University of York, Heslington, York, YO10 5DD, UK
| |
Collapse
|
44
|
Debnath S, Roy S, Abul‐Haija YM, Frederix PWJM, Ramalhete SM, Hirst AR, Javid N, Hunt NT, Kelly SM, Angulo J, Khimyak YZ, Ulijn RV. Tunable Supramolecular Gel Properties by Varying Thermal History. Chemistry 2019; 25:7881-7887. [DOI: 10.1002/chem.201806281] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Indexed: 01/01/2023]
Affiliation(s)
- Sisir Debnath
- WestCHEMDepartment of Pure and Applied ChemistryUniversity of Strathclyde 295 Cathedral Street Glasgow G1 1XL UK
- Current Address: Department of ChemistrySerampore College 9, William Carey Sarani Serampore, Hooghly West Bengal Pin-712201 India
| | - Sangita Roy
- WestCHEMDepartment of Pure and Applied ChemistryUniversity of Strathclyde 295 Cathedral Street Glasgow G1 1XL UK
| | - Yousef M. Abul‐Haija
- WestCHEMDepartment of Pure and Applied ChemistryUniversity of Strathclyde 295 Cathedral Street Glasgow G1 1XL UK
- Current Address: WestCHEMSchool of ChemistryUniversity of Glasgow Glasgow G12 8QQ UK
| | - Pim W. J. M. Frederix
- WestCHEMDepartment of Pure and Applied ChemistryUniversity of Strathclyde 295 Cathedral Street Glasgow G1 1XL UK
- SUPADepartment of PhysicsUniversity of Strathclyde 107 Rottenrow East Glasgow G4 0NG UK
| | - Susana M. Ramalhete
- School of PharmacyUniversity of East Anglia Norwich Research Park Norwich NR4 7TJ UK
| | - Andrew R. Hirst
- WestCHEMDepartment of Pure and Applied ChemistryUniversity of Strathclyde 295 Cathedral Street Glasgow G1 1XL UK
- Current Address: Department of ChemistryUniversity of York York YO10 5DD UK
| | - Nadeem Javid
- WestCHEMDepartment of Pure and Applied ChemistryUniversity of Strathclyde 295 Cathedral Street Glasgow G1 1XL UK
- Current Address: School of Chemistry and BiosciencesUniversity of Bradford Bradford BD7 1DP UK
| | - Neil T. Hunt
- SUPADepartment of PhysicsUniversity of Strathclyde 107 Rottenrow East Glasgow G4 0NG UK
- Current Address: Department of ChemistryUniversity of York York YO10 5DD UK
| | - Sharon M. Kelly
- Institute of Molecular Cell and Systems BiologyUniversity of Glasgow Glasgow G12 8QQ UK
| | - Jesús Angulo
- School of PharmacyUniversity of East Anglia Norwich Research Park Norwich NR4 7TJ UK
| | - Yaroslav Z. Khimyak
- School of PharmacyUniversity of East Anglia Norwich Research Park Norwich NR4 7TJ UK
| | - Rein V. Ulijn
- WestCHEMDepartment of Pure and Applied ChemistryUniversity of Strathclyde 295 Cathedral Street Glasgow G1 1XL UK
- Advanced Science Research Center (ASRC) at the Graduate Center of the City University of New York (CUNY) 85 St Nicholas Terrace New York 10031 USA
- Department of ChemistryHunter CollegeCity University of New York 695 Park Avenue New York 10065 USA
- Ph.D. programs in Biochemistry and ChemistryThe Graduate Center of the City University of New York New York 10016 USA
| |
Collapse
|
45
|
Abstract
The directed assembly of molecular building blocks into discrete supermolecules or extended supramolecular networks through noncovalent intermolecular interactions is an ongoing challenge in chemistry. This challenge may be overcome by establishing a hierarchy of intermolecular interactions that, in turn, may facilitate the edification of supramolecular assemblies. As noncovalent interactions can be used to accelerate the reaction rates and/or to increase their selectivity, the development of efficient and practical catalytic systems, using supramolecular chemistry, has been achieved during the last few decades. However, between discrete and extended supramolecular assemblies, the newly developed “colloidal tectonics” concept allows us to link the molecular and macroscopic scales through the structured engineering of colloidal structures that can be applied to the design of predictable, versatile, and switchable catalytic systems. The main cutting-edge strategies involving supramolecular chemistry and self-organization in catalysis will be discussed and compared in this review.
Collapse
|
46
|
Xu X, Qu L, Song J, Wu D, Zhou X, Xiang H. A simple and visual approach for enantioselective recognition through supramolecular gels with specific selectivity. Chem Commun (Camb) 2019; 55:9873-9876. [DOI: 10.1039/c9cc04895b] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
(S)/(R)1 enantioselectively self-assemble to form a gel or solution with one enantiomer of (S)/(R)BINAM with specific selectivity.
Collapse
Affiliation(s)
- Xuemei Xu
- College of Chemistry
- Sichuan University
- Chengdu 610064
- P. R. China
| | - Lang Qu
- College of Chemistry
- Sichuan University
- Chengdu 610064
- P. R. China
| | - Jintong Song
- College of Chemistry
- Sichuan University
- Chengdu 610064
- P. R. China
| | - Dehua Wu
- College of Chemistry
- Sichuan University
- Chengdu 610064
- P. R. China
| | - Xiangge Zhou
- College of Chemistry
- Sichuan University
- Chengdu 610064
- P. R. China
| | - Haifeng Xiang
- College of Chemistry
- Sichuan University
- Chengdu 610064
- P. R. China
| |
Collapse
|
47
|
Felip-León C, Galindo F, Miravet JF. Insights into the aggregation-induced emission of 1,8-naphthalimide-based supramolecular hydrogels. NANOSCALE 2018; 10:17060-17069. [PMID: 30178813 DOI: 10.1039/c8nr03755h] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The study of aggregation-induced emission (AIE) of a series of 1,8-naphthalimide derivatives in aqueous media is reported herein. Some of these molecules constitute the first examples of 1,8-naphthalimide-containing amino acid derivatives that form hydrogels with excellent photophysical and mechanical properties. The present study provides further insights for the rational design of water-compatible stimuli-responsive photonic materials presenting AIE. AIE was quantitatively evaluated by measuring the fluorescence quantum yields of the molecules. Gelators 1 and 2 exhibit self-assembled fibrillar morphologies and present the best performance regarding the AIE effect, showing a remarkable enhancement in fluorescence intensity of 4700% and reaching a notable fluorescence quantum yield (Φf) of 30%. Non-gelator molecules 6 and 7 form nanoparticles, which also present AIE, but with emissions corresponding to their excimers. Therefore, the AIE intensity and wavelength are regulated by the type of aggregate morphology: fibers, nanoparticles or soluble species.
Collapse
Affiliation(s)
- Carles Felip-León
- Universitat Jaume I, Departamento de Química Inorgánica y Orgánica, Avda. Sos Baynat s/n, 12071, Castellón, Spain.
| | | | | |
Collapse
|
48
|
Foster JS, Prentice AW, Forgan RS, Paterson MJ, Lloyd GO. Targetable Mechanical Properties by Switching between Self-Sorting and Co-assembly with In Situ Formed Tripodal Ketoenamine Supramolecular Hydrogels. CHEMNANOMAT : CHEMISTRY OF NANOMATERIALS FOR ENERGY, BIOLOGY AND MORE 2018; 4:853-859. [PMID: 31032176 PMCID: PMC6473556 DOI: 10.1002/cnma.201800198] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2018] [Indexed: 05/03/2023]
Abstract
A new family of supramolecular hydrogelators are introduced in which self-sorting and co-assembly can be utilised in the tuneability of the mechanical properties of the materials, a property closely tied to the nanostructure of the gel network. The in situ reactivity of the components of the gelators allows for system chemistry concepts to be applied to the formation of the gels and shows that molecular properties, and not necessarily the chemical identity, determines some gel properties in these family of gels.
Collapse
Affiliation(s)
- Jamie S. Foster
- Institute of Chemical Sciences, School of Engineering and Physical SciencesHeriot-Watt UniversityWilliam Perkin BuildingEdinburghScotland, United KingdomEH11 4AS
| | - Andrew W. Prentice
- Institute of Chemical Sciences, School of Engineering and Physical SciencesHeriot-Watt UniversityWilliam Perkin BuildingEdinburghScotland, United KingdomEH11 4AS
| | - Ross S. Forgan
- WestCHEM, School of ChemistryUniversity of GlasgowJoseph Black Building, University of Glasgow, University AvenueGlasgowUnited KingdomG12 8QQ.
| | - Martin J. Paterson
- Institute of Chemical Sciences, School of Engineering and Physical SciencesHeriot-Watt UniversityWilliam Perkin BuildingEdinburghScotland, United KingdomEH11 4AS
| | - Gareth O. Lloyd
- Institute of Chemical Sciences, School of Engineering and Physical SciencesHeriot-Watt UniversityWilliam Perkin BuildingEdinburghScotland, United KingdomEH11 4AS
| |
Collapse
|
49
|
Urea Activation by an External Brønsted Acid: Breaking Self-Association and Tuning Catalytic Performance. Catalysts 2018. [DOI: 10.3390/catal8080305] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
In this work, we hypothesize that Brønsted acids can activate urea-based catalysts by diminishing its self-assembly tendency. As a proof of concept, we used the asymmetric Friedel–Crafts alkylation of indoles with nitroalkenes as a benchmark reaction. The resulting 3-substituted indole derivatives were obtained with better results due to cooperative effects of the chiral urea and a Brønsted acid additive. Such synergy has been rationalized in terms of disassembly of the supramolecular catalyst aggregates, affording a more acidic and rigid catalytic complex.
Collapse
|
50
|
Angelerou MF, Frederix PWJM, Wallace M, Yang B, Rodger A, Adams DJ, Marlow M, Zelzer M. Supramolecular Nucleoside-Based Gel: Molecular Dynamics Simulation and Characterization of Its Nanoarchitecture and Self-Assembly Mechanism. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:6912-6921. [PMID: 29757652 PMCID: PMC6078381 DOI: 10.1021/acs.langmuir.8b00646] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2018] [Revised: 05/09/2018] [Indexed: 05/27/2023]
Abstract
Among the diversity of existing supramolecular hydrogels, nucleic acid-based hydrogels are of particular interest for potential drug delivery and tissue engineering applications because of their inherent biocompatibility. Hydrogel performance is directly related to the nanostructure and the self-assembly mechanism of the material, an aspect that is not well-understood for nucleic acid-based hydrogels in general and has not yet been explored for cytosine-based hydrogels in particular. Herein, we use a broad range of experimental characterization techniques along with molecular dynamics (MD) simulation to demonstrate the complementarity and applicability of both approaches for nucleic acid-based gelators in general and propose the self-assembly mechanism for a novel supramolecular gelator, N4-octanoyl-2'-deoxycytidine. The experimental data and the MD simulation are in complete agreement with each other and demonstrate the formation of a hydrophobic core within the fibrillar structures of these mainly water-containing materials. The characterization of the distinct duality of environments in this cytidine-based gel will form the basis for further encapsulation of both small hydrophobic drugs and biopharmaceuticals (proteins and nucleic acids) for drug delivery and tissue engineering applications.
Collapse
Affiliation(s)
| | - Pim W. J. M. Frederix
- Faculty
of Science and Engineering, University of
Groningen, Groningen 9747 AG, The Netherlands
| | - Matthew Wallace
- School
of Pharmacy, University of East Anglia, Norwich NR4 7TJ, U.K.
| | - Bin Yang
- School
of Pharmacy, University of Nottingham, Nottingham NG7 2RD, U.K.
| | - Alison Rodger
- Department
of Molecular Sciences, Macquarie University, Sydney, New South Wales 2109, Australia
| | - Dave J. Adams
- School
of Chemistry, University of Glasgow, Glasgow G12 8QQ, U.K.
| | - Maria Marlow
- School
of Pharmacy, University of Nottingham, Nottingham NG7 2RD, U.K.
| | - Mischa Zelzer
- School
of Pharmacy, University of Nottingham, Nottingham NG7 2RD, U.K.
| |
Collapse
|