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Wu B, Zhao S, Yang X, Zhou L, Ma Y, Zhang H, Li W, Wang H. Biomimetic Heterodimerization of Tetrapeptides to Generate Liquid Crystalline Hydrogel in A Two-Component System. ACS NANO 2022; 16:4126-4138. [PMID: 35230089 DOI: 10.1021/acsnano.1c09860] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Anisotropic structures made by hierarchical self-assembly and crystallization play an essential role in the living system. However, the spontaneous formation of liquid crystalline hydrogel of low molecular weight organic molecules with controlled properties remains challenging. This work describes a rational design of tetrapeptide without N-terminal modification and chemical conjugation that utilizes intermolecular interactions to drive the formation of nanofiber bundles in a two-component system, which could not be accessed by a single component. The diameter of nanofibers can be simply controlled by varying the enantiomer of electrostatic pairs. Mutation of lysine (K) to arginine (R) results in an over 30-fold increase of mechanical property. Mechanistic studies using different techniques unravel the mechanism of self-assembly and formation of anisotropic liquid crystalline domains. All-atom molecular dynamics simulations reveal that the mixture of heterochiral peptides self-assembles into a nanofiber with a larger width compared to the homochiral assemblies due to the different stacking pattern and intermolecular interactions. The intermolecular interactions show an obvious increase by substituting the K with R, facilitating a more stable assembly and further altering the assembly mechanics and bulk material properties. Moreover, we also demonstrated that the hydrogel properties can be easily controlled by incorporating a light-responsive group. This work provides a method to generate the liquid crystalline hydrogel from isotropic monomers.
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Affiliation(s)
- Bihan Wu
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province, School of Science, Institute of Natural Sciences, Westlake Institute for Advanced Study, Westlake University, 18 Shilongshan Road, Hangzhou 310024, Zhejiang Province China
| | - Shuang Zhao
- Key Laboratory of 3D Micro/Nano Fabrication and Characterization of Zhejiang Province, School of Engineering, Institute of Advanced Technology, Westlake Institute for Advanced Study, Westlake University, 18 Shilongshan Road, Hangzhou 310024, Zhejiang Province China
| | - Xuejiao Yang
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province, School of Science, Institute of Natural Sciences, Westlake Institute for Advanced Study, Westlake University, 18 Shilongshan Road, Hangzhou 310024, Zhejiang Province China
| | - Laicheng Zhou
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province, School of Science, Institute of Natural Sciences, Westlake Institute for Advanced Study, Westlake University, 18 Shilongshan Road, Hangzhou 310024, Zhejiang Province China
| | - Yang Ma
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province, School of Science, Institute of Natural Sciences, Westlake Institute for Advanced Study, Westlake University, 18 Shilongshan Road, Hangzhou 310024, Zhejiang Province China
| | - Hongyue Zhang
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province, School of Science, Institute of Natural Sciences, Westlake Institute for Advanced Study, Westlake University, 18 Shilongshan Road, Hangzhou 310024, Zhejiang Province China
| | - Wenbin Li
- Key Laboratory of 3D Micro/Nano Fabrication and Characterization of Zhejiang Province, School of Engineering, Institute of Advanced Technology, Westlake Institute for Advanced Study, Westlake University, 18 Shilongshan Road, Hangzhou 310024, Zhejiang Province China
| | - Huaimin Wang
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province, School of Science, Institute of Natural Sciences, Westlake Institute for Advanced Study, Westlake University, 18 Shilongshan Road, Hangzhou 310024, Zhejiang Province China
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Nicotinamide-based supergelator self-assembling via asymmetric hydrogen bonding NH⋯OC and H⋯Br - pattern for reusable, moldable and self-healable nontoxic fuel gels. J Colloid Interface Sci 2021; 603:182-190. [PMID: 34186397 DOI: 10.1016/j.jcis.2021.06.071] [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: 03/28/2021] [Revised: 06/10/2021] [Accepted: 06/11/2021] [Indexed: 11/23/2022]
Abstract
HYPOTHESIS Development of highly efficient low-molecular weight gelators (LMWGs) for safe energy storage materials is of great demand. Energy storage materials as fuel gels are often achieved by construction of hybrid organic frameworks capable of multiple noncovalent interactions in self-assembly, which allow tuning required properties at the molecular level by altering individual building blocks of the LMWG. However, LMWGs have limited rechargeable capability due to their chemical instability. EXPERIMENTS We designed, synthesized and characterized a novel, bio-inspired chiral gemini amphiphile derivative 1 containing N-hexadecyl aliphatic tails from quaternized nicotinamide-based segment and bromide anion showing supergelation ability in water, alcohols, aprotic polar and aromatic solvents, with critical gel concentrations as low as 0.1 and 0.035 wt% in isopropanol and water, respectively. FINDINGS Nanostructural architecture of the network depended on the solvent used and showed variations in size and shape of 1D nanofibers. Supergelation is attributed to a unique asymmetric NH⋯OC, H⋯Br- hydrogen bonding pattern between H-2 hydrogens from nicotinamide-based segment, amide functional groups from chiral trans-cyclohexane-1,2-diamide-based segment and bromide ions, supporting the intermolecular amide-amide interactions appearing across one strand of the self-assembly. Gels formed from 1 exhibit high stiffness, self-healing, moldable and colorable properties. In addition, isopropanol gels of 1 are attractive as reusable, shape-persistent non-toxic fuels maintaining the chemical structure with gelation efficiency for at least five consecutive burning cycles.
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Panczyk T, Camp PJ. Lorentz forces induced by a static magnetic field have negligible effects on results from classical molecular dynamics simulations of aqueous solutions. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.115701] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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de Vet C, Gartzia-Rivero L, Schäfer P, Raffy G, Del Guerzo A. Photocontrolled Hierarchical Self-Assembly of Anisotropic Micropatterns of Nanofibers onto Isotropic Surfaces. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2020; 16:e1906723. [PMID: 31971670 DOI: 10.1002/smll.201906723] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Revised: 12/21/2019] [Indexed: 06/10/2023]
Abstract
Hierarchical self-assembly is achieved using a visible light triggered photoreaction. A pro-gelator, α-diketone-2,3-didecyloxyanthracene, is photoconverted into a low molecular weight gelator, 2,3-didecyloxyanthracene (DDOA), that self-assembles into nanofibers. Spatial confinement and patterns of these nanofibers onto a surface are achieved by localizing initial nucleation with a focused laser and photogenerate subsequent fiber growth with the laser or gentler wide-field irradiation. Remarkably, collective growth of nanofibers results in anisotropic micropatterns with orientation factors (OF) reaching 79%, resulting in collective emission of linearly polarized light. The OF, distance of collective growth and fiber density, are controlled by the photoirradiation conditions and the balance of interactions between DDOA aggregates and the glass surface. An unprecedented juxtaposition of orthogonally oriented nanofiber patterns on an isotropic surface is achieved with individual control of the fibers' main direction. In perspective, this photochemical method can be extended to a large variety of self-assembling molecules.
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Affiliation(s)
- Christiaan de Vet
- Univ. Bordeaux, CNRS, Bordeaux INP, Institut des Sciences Moléculaires UMR 5255, 351 Cours de la Libération, 33400, Talence, France
| | - Leire Gartzia-Rivero
- Univ. Bordeaux, CNRS, Bordeaux INP, Institut des Sciences Moléculaires UMR 5255, 351 Cours de la Libération, 33400, Talence, France
- Department of Physical Chemistry, University of the Basque Country (UPV/EHU), Apartado 644, 48080, Bilbao, Spain
| | - Philip Schäfer
- Univ. Bordeaux, CNRS, Bordeaux INP, Institut des Sciences Moléculaires UMR 5255, 351 Cours de la Libération, 33400, Talence, France
| | - Guillaume Raffy
- Univ. Bordeaux, CNRS, Bordeaux INP, Institut des Sciences Moléculaires UMR 5255, 351 Cours de la Libération, 33400, Talence, France
| | - André Del Guerzo
- Univ. Bordeaux, CNRS, Bordeaux INP, Institut des Sciences Moléculaires UMR 5255, 351 Cours de la Libération, 33400, Talence, France
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5
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Yamaguchi D, Ikemoto Y, Kato T. Thermally tunable selective formation of self-assembled fibers into two orthogonal directions in oriented liquid-crystalline smectic templates. Chem Commun (Camb) 2020; 56:9954-9957. [DOI: 10.1039/d0cc01950j] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Two orthogonal (grid-like) and one directional fibrous structures are selectively formed through anisotropic self-assembly of low-molecular-weight gelators in liquid-crystalline smectic A templates depending on thermally tuned layered structures.
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Affiliation(s)
- Daisuke Yamaguchi
- Department of Chemistry and Biotechnology
- School of Engineering
- The University of Tokyo
- Bunkyo-ku
- Japan
| | - Yuka Ikemoto
- Japan Synchrotron Radiation Research Institute/SPring-8
- Sayo-gun
- Japan
| | - Takashi Kato
- Department of Chemistry and Biotechnology
- School of Engineering
- The University of Tokyo
- Bunkyo-ku
- Japan
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6
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Đorđević L, Marangoni T, Liu M, De Zorzi R, Geremia S, Minoia A, Lazzaroni R, Ishida Y, Bonifazi D. Templating Porphyrin Anisotropy via Magnetically Aligned Carbon Nanotubes. Chempluschem 2019; 84:1270-1278. [DOI: 10.1002/cplu.201800623] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2018] [Indexed: 12/13/2022]
Affiliation(s)
- Luka Đorđević
- Department of Chemical and Pharmaceutical SciencesUniversity of Trieste Via L. Giorgieri 1 34127 Trieste Italy
| | - Tomas Marangoni
- Department of Chemical and Pharmaceutical SciencesUniversity of Trieste Via L. Giorgieri 1 34127 Trieste Italy
| | - Mingjie Liu
- RIKEN Center for Emergent Matter Science 2-1 Hirosawa, Wako Saitama 351-0198 Japan
| | - Rita De Zorzi
- Department of Chemical and Pharmaceutical SciencesUniversity of Trieste Via L. Giorgieri 1 34127 Trieste Italy
| | - Silvano Geremia
- Department of Chemical and Pharmaceutical SciencesUniversity of Trieste Via L. Giorgieri 1 34127 Trieste Italy
| | - Andrea Minoia
- Laboratory for Chemistry of Novel Materials, CIRMAPUniversité de Mons-UMONS Place du Parc 20 B-7000 Mons Belgium
| | - Roberto Lazzaroni
- Laboratory for Chemistry of Novel Materials, CIRMAPUniversité de Mons-UMONS Place du Parc 20 B-7000 Mons Belgium
| | - Yasuhiro Ishida
- RIKEN Center for Emergent Matter Science 2-1 Hirosawa, Wako Saitama 351-0198 Japan
| | - Davide Bonifazi
- School of ChemistryCardiff University Park Place Main Building CF10 3AT United Kingdom
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7
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Knoll K, Leyendecker M, Thiele CM. l
‐Valine Derivatised 1,3,5‐Benzene‐Tricarboxamides as Building Blocks for a New Supramolecular Organogel‐Like Alignment Medium. European J Org Chem 2019. [DOI: 10.1002/ejoc.201801306] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Kevin Knoll
- Technische Universität Darmstadt Clemens‐Schöpf Institut für Organische Chemie und Biochemie Alarich‐Weiss‐Str. 4 64287 Darmstadt Germany
| | - Martin Leyendecker
- Technische Universität Darmstadt Clemens‐Schöpf Institut für Organische Chemie und Biochemie Alarich‐Weiss‐Str. 4 64287 Darmstadt Germany
| | - Christina M. Thiele
- Technische Universität Darmstadt Clemens‐Schöpf Institut für Organische Chemie und Biochemie Alarich‐Weiss‐Str. 4 64287 Darmstadt Germany
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8
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Chakrabarty A, Raffy G, Maity M, Gartzia-Rivero L, Marre S, Aymonier C, Maitra U, Del Guerzo A. Nanofiber-Directed Anisotropic Self-Assembly of CdSe-CdS Quantum Rods for Linearly Polarized Light Emission Evidenced by Quantum Rod Orientation Microscopy. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2018; 14:e1802311. [PMID: 30112796 DOI: 10.1002/smll.201802311] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2018] [Revised: 07/24/2018] [Indexed: 06/08/2023]
Abstract
Hybrid soft materials composed of CdSe-CdS nanorods or "quantum rods" (QRs) and the fluorescent 2,3-didecyloxyanthracene (DDOA) low molecular weight organogelator are obtained through self-assembly. Spectroscopy, microscopy, and rheology studies show that the QRs and DDOA coassemble, thereby stabilizing the organogels. Depending on the QR load and excitation wavelength, single nanofibers (NFs) of the hybrid gel display either sharp polarized red luminescence (under green excitation), or dual perpendicularly polarized blue and red emissions (under UV excitation). Transmission electron microscopy, microspectroscopy, and quantum rod orientation microscopy (QROM) reveal that QRs align along the organogel NFs with order parameters reaching 76% and 87%. This paves the way for obtaining surfaces of QR/NF assemblies yielding sharp red linearly polarized emission. In addition, this work demonstrates that QRs can be used more generally to probe nanostructured soft materials, even nonemissive ones. QROM allows to establish maps of the orientation of single QRs dispersed onto or within a gel network by measuring the polarization of the emission of the individual QRs. As occurs within this work in which QRs and NFs interact, the orientation of each QR reveals information on the underlying nanostructure (such as surface striation, bundle formation, and helicity).
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Affiliation(s)
- Arkajyoti Chakrabarty
- Institut des Sciences Moléculaires, UMR 5255, Université de Bordeaux, CNRS, 351 Cours de la Libération, 33400, Talence, France
- ICMCB, Bordeaux INP, UMR 5026, Université de Bordeaux, CNRS, 87 av. du Dr. Schweitzer, 33600, Pessac, France
- Department of Organic Chemistry, Indian Institute of Science, Bangalore, 560012, India
| | - Guillaume Raffy
- Institut des Sciences Moléculaires, UMR 5255, Université de Bordeaux, CNRS, 351 Cours de la Libération, 33400, Talence, France
| | - Mitasree Maity
- Department of Organic Chemistry, Indian Institute of Science, Bangalore, 560012, India
| | - Leire Gartzia-Rivero
- Institut des Sciences Moléculaires, UMR 5255, Université de Bordeaux, CNRS, 351 Cours de la Libération, 33400, Talence, France
- Department of Physical Chemistry, University of the Basque Country (UPV/EHU), Apartado 644, 48080, Bilbao, Spain
| | - Samuel Marre
- ICMCB, Bordeaux INP, UMR 5026, Université de Bordeaux, CNRS, 87 av. du Dr. Schweitzer, 33600, Pessac, France
| | - Cyril Aymonier
- ICMCB, Bordeaux INP, UMR 5026, Université de Bordeaux, CNRS, 87 av. du Dr. Schweitzer, 33600, Pessac, France
| | - Uday Maitra
- Department of Organic Chemistry, Indian Institute of Science, Bangalore, 560012, India
| | - André Del Guerzo
- Institut des Sciences Moléculaires, UMR 5255, Université de Bordeaux, CNRS, 351 Cours de la Libération, 33400, Talence, France
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9
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Zhang Y, Mao S, Suzuki Y, Tanaka Y, Kawaguchi M, Zhang W, Zeng H, Nakajima H, Yang M, Uchiyama K. Elaborately programmed nanowires fabricated using a tapered push-pull nozzle system. Chem Commun (Camb) 2018; 54:719-722. [PMID: 29227480 DOI: 10.1039/c7cc07873k] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Elaborately programmed silver nanowire arrays can be prepared using a tapered push-pull nozzle system (TPPNS), which is used to directly write micro-nano wires on a substrate via a two-reagent reaction in the diffusion mixing region. The wires could be precisely positioned on the substrate and their width could be freely controlled from the micro to the nano scale, indicating an advance in the methodologies of controlling and fabricating nanowires. The as-prepared silver three-electrode device can serve as a three-electrode sensor.
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Affiliation(s)
- Yong Zhang
- Department of Applied Chemistry Graduate School of Urban Environmental Sciences Tokyo Metropolitan University Minamiohsawa, Hachioji, Tokyo 192-0397, Japan.
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10
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Isabettini S, Baumgartner ME, Fischer P, Windhab EJ, Liebi M, Kuster S. Fabrication Procedures and Birefringence Measurements for Designing Magnetically Responsive Lanthanide Ion Chelating Phospholipid Assemblies. J Vis Exp 2018. [PMID: 29364235 DOI: 10.3791/56812] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Abstract
Bicelles are tunable disk-like polymolecular assemblies formed from a large variety of lipid mixtures. Applications range from membrane protein structural studies by nuclear magnetic resonance (NMR) to nanotechnological developments including the formation of optically active and magnetically switchable gels. Such technologies require high control of the assembly size, magnetic response and thermal resistance. Mixtures of 1,2-dimyristoyl-sn-glycero-3-phosphocholine (DMPC) and its lanthanide ion (Ln3+) chelating phospholipid conjugate, 1,2-dimyristoyl-sn-glycero-3-phospho-ethanolamine-diethylene triaminepentaacetate (DMPE-DTPA), assemble into highly magnetically responsive assemblies such as DMPC/DMPE-DTPA/Ln3+ (molar ratio 4:1:1) bicelles. Introduction of cholesterol (Chol-OH) and steroid derivatives in the bilayer results in another set of assemblies offering unique physico-chemical properties. For a given lipid composition, the magnetic alignability is proportional to the bicelle size. The complexation of Ln3+ results in unprecedented magnetic responses in terms of both magnitude and alignment direction. The thermo-reversible collapse of the disk-like structures into vesicles upon heating allows tailoring of the assemblies' dimensions by extrusion through membrane filters with defined pore sizes. The magnetically alignable bicelles are regenerated by cooling to 5 °C, resulting in assembly dimensions defined by the vesicle precursors. Herein, this fabrication procedure is explained and the magnetic alignability of the assemblies is quantified by birefringence measurements under a 5.5 T magnetic field. The birefringence signal, originating from the phospholipid bilayer, further enables monitoring of polymolecular changes occurring in the bilayer. This simple technique is complementary to NMR experiments that are commonly employed to characterize bicelles.
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Affiliation(s)
| | | | | | | | | | - Simon Kuster
- Laboratory of Food Process Engineering, ETH Zurich
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11
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Miyajima H, Kasuya MCZ, Del Guerzo A, Vincent JM, Hatanaka K. Fluorous gels of a fluorous alcohol using a low molecular weight anthracene organogelator. J Fluor Chem 2018. [DOI: 10.1016/j.jfluchem.2017.11.011] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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12
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Lübtow M, Helmers I, Stepanenko V, Albuquerque RQ, Marder TB, Fernández G. Self-Assembly of 9,10-Bis(phenylethynyl) Anthracene (BPEA) Derivatives: Influence of π-π and Hydrogen-Bonding Interactions on Aggregate Morphology and Self-Assembly Mechanism. Chemistry 2017; 23:6198-6205. [DOI: 10.1002/chem.201605989] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2016] [Indexed: 12/11/2022]
Affiliation(s)
- Michael Lübtow
- Institut für Organische Chemie; Universität Würzburg; Am Hubland 97074 Würzburg Germany
- Institut für Anorganische Chemie; Universität Würzburg; Am Hubland 97074 Würzburg Germany
| | - Ingo Helmers
- Organisch-Chemisches Institut; Westfälische Wilhelms-Universität Münster; Corrensstraße 40 48149 Münster Germany
| | - Vladimir Stepanenko
- Institut für Organische Chemie; Universität Würzburg; Am Hubland 97074 Würzburg Germany
| | - Rodrigo Q. Albuquerque
- School of Pharmacy and Biomolecular Sciences; Liverpool John Moores University (LJMU); Liverpool UK
| | - Todd B. Marder
- Institut für Anorganische Chemie; Universität Würzburg; Am Hubland 97074 Würzburg Germany
| | - Gustavo Fernández
- Institut für Organische Chemie; Universität Würzburg; Am Hubland 97074 Würzburg Germany
- Organisch-Chemisches Institut; Westfälische Wilhelms-Universität Münster; Corrensstraße 40 48149 Münster Germany
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Wallace M, Iggo JA, Adams DJ. Probing the surface chemistry of self-assembled peptide hydrogels using solution-state NMR spectroscopy. SOFT MATTER 2017; 13:1716-1727. [PMID: 28165092 DOI: 10.1039/c6sm02404a] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
The surface chemistry of self-assembled hydrogel fibres - their charge, hydrophobicity and ion-binding dynamics - is recognised to play an important role in determining how the gels develop as well as their suitability for different applications. However, to date there are no established methodologies for the study of this surface chemistry. Here, we demonstrate how solution-state NMR spectroscopy can be employed to measure the surface chemical properties of the fibres in a range of hydrogels formed from N-functionalised dipeptides, an effective and versatile class of gelator that has attracted much attention. By studying the interactions with the gel fibres of a diverse range of probe molecules and ions, we can simultaneously study a number of surface chemical properties of the NMR invisible fibres in an essentially non-invasive manner. Our results yield fresh insights into the materials. Most notably, gel fibres assembled using different tiggering methods bear differing amounts of negative charge as a result of a partial deprotonation of the carboxylic acid groups of the gelators. We also demonstrate how chemical shift imaging (CSI) techniques can be applied to follow the formation of hydrogels along chemical gradients. We apply CSI to study the binding of Ca2+ and subsequent gelation of peptide assemblies at alkaline pH. Using metal ion-binding molecules as probes, we are able to detect the presence of bound Ca2+ ions on the surface of the gel fibres. We briefly explore how knowledge of the surface chemical properties of hydrogels could be used to inform their practical application in fields such as drug delivery and environmental remediation.
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Affiliation(s)
- Matthew Wallace
- Department of Chemistry, University of Liverpool, Liverpool, L69 7ZD, UK.
| | - Jonathan A Iggo
- Department of Chemistry, University of Liverpool, Liverpool, L69 7ZD, UK.
| | - Dave J Adams
- Department of Chemistry, University of Liverpool, Liverpool, L69 7ZD, UK.
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van der Asdonk P, Kouwer PHJ. Liquid crystal templating as an approach to spatially and temporally organise soft matter. Chem Soc Rev 2017; 46:5935-5949. [DOI: 10.1039/c7cs00029d] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Liquid crystal templating: an emerging technique to organise and control soft matter at multiple length scales.
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Affiliation(s)
- Pim van der Asdonk
- Radboud University
- Institute for Molecules and Materials
- 6525 AJ Nijmegen
- The Netherlands
| | - Paul H. J. Kouwer
- Radboud University
- Institute for Molecules and Materials
- 6525 AJ Nijmegen
- The Netherlands
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15
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Marco AB, Aparicio F, Faour L, Iliopoulos K, Morille Y, Allain M, Franco S, Andreu R, Sahraoui B, Gindre D, Canevet D, Sallé M. Promoting Spontaneous Second Harmonic Generation through Organogelation. J Am Chem Soc 2016; 138:9025-8. [PMID: 27415660 DOI: 10.1021/jacs.6b04554] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
An organogelator based on the Disperse Red nonlinear optical chromophore was synthesized according to a simple and efficient three-step procedure. The supramolecular gel organization leads to xerogels which display a spontaneous second harmonic generation (SHG) response without any need for preprocessing, and this SHG activity appears to be stable over several months. These findings, based on an intrinsic structural approach, are supported by favorable intermolecular supramolecular interactions, which promote a locally non-centrosymmetric NLO-active organization. This is in sharp contrast with most materials designed for SHG purposes, which generally require the use of expensive or heavy-to-handle external techniques for managing the dipoles' alignment.
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Affiliation(s)
- A Belén Marco
- Departamento de Química Orgánica, ICMA, Universidad de Zaragoza-CSIC , 50009 Zaragoza, Spain
| | - Fátima Aparicio
- Laboratoire MOLTECH-Anjou, Université d'Angers , UMR CNRS 6200, 2 boulevard Lavoisier, 49045 Angers Cedex, France
| | - Lara Faour
- Laboratoire MOLTECH-Anjou, Université d'Angers , UMR CNRS 6200, 2 boulevard Lavoisier, 49045 Angers Cedex, France
| | - Konstantinos Iliopoulos
- Laboratoire MOLTECH-Anjou, Université d'Angers , UMR CNRS 6200, 2 boulevard Lavoisier, 49045 Angers Cedex, France
| | - Yohann Morille
- Laboratoire MOLTECH-Anjou, Université d'Angers , UMR CNRS 6200, 2 boulevard Lavoisier, 49045 Angers Cedex, France
| | - Magali Allain
- Laboratoire MOLTECH-Anjou, Université d'Angers , UMR CNRS 6200, 2 boulevard Lavoisier, 49045 Angers Cedex, France
| | - Santiago Franco
- Departamento de Química Orgánica, ICMA, Universidad de Zaragoza-CSIC , 50009 Zaragoza, Spain
| | - Raquel Andreu
- Departamento de Química Orgánica, ICMA, Universidad de Zaragoza-CSIC , 50009 Zaragoza, Spain
| | - Bouchta Sahraoui
- Laboratoire MOLTECH-Anjou, Université d'Angers , UMR CNRS 6200, 2 boulevard Lavoisier, 49045 Angers Cedex, France
| | - Denis Gindre
- Laboratoire MOLTECH-Anjou, Université d'Angers , UMR CNRS 6200, 2 boulevard Lavoisier, 49045 Angers Cedex, France
| | - David Canevet
- Laboratoire MOLTECH-Anjou, Université d'Angers , UMR CNRS 6200, 2 boulevard Lavoisier, 49045 Angers Cedex, France
| | - Marc Sallé
- Laboratoire MOLTECH-Anjou, Université d'Angers , UMR CNRS 6200, 2 boulevard Lavoisier, 49045 Angers Cedex, France
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16
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Zhang X, Jie J, Deng W, Shang Q, Wang J, Wang H, Chen X, Zhang X. Alignment and Patterning of Ordered Small-Molecule Organic Semiconductor Micro-/Nanocrystals for Device Applications. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2016; 28:2475-503. [PMID: 26813697 DOI: 10.1002/adma.201504206] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2015] [Revised: 10/20/2015] [Indexed: 05/28/2023]
Abstract
Large-area alignment and patterning of small-molecule organic semiconductor micro-/nanocrystals (SMOSNs) at desired locations is a prerequisite for their practical device applications. Recent strategies for alignment and patterning of ordered SMOSNs and their corresponding device applications are highlighted.
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Affiliation(s)
- Xiujuan Zhang
- Institute of Functional Nano & Soft Materials (FUNSOM), Collaborative Innovation Center of Suzhou Nano Science and Technology (NANO-CIC), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou Jiangsu, 215123, P. R. China
| | - Jiansheng Jie
- Institute of Functional Nano & Soft Materials (FUNSOM), Collaborative Innovation Center of Suzhou Nano Science and Technology (NANO-CIC), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou Jiangsu, 215123, P. R. China
| | - Wei Deng
- Institute of Functional Nano & Soft Materials (FUNSOM), Collaborative Innovation Center of Suzhou Nano Science and Technology (NANO-CIC), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou Jiangsu, 215123, P. R. China
| | - Qixun Shang
- Institute of Functional Nano & Soft Materials (FUNSOM), Collaborative Innovation Center of Suzhou Nano Science and Technology (NANO-CIC), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou Jiangsu, 215123, P. R. China
| | - Jincheng Wang
- Institute of Functional Nano & Soft Materials (FUNSOM), Collaborative Innovation Center of Suzhou Nano Science and Technology (NANO-CIC), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou Jiangsu, 215123, P. R. China
| | - Hui Wang
- Institute of Functional Nano & Soft Materials (FUNSOM), Collaborative Innovation Center of Suzhou Nano Science and Technology (NANO-CIC), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou Jiangsu, 215123, P. R. China
| | - Xianfeng Chen
- School of Chemistry and Forensic Sciences, Faculty of Life Sciences, University of Bradford, United Kingdom, BD7 1DP
| | - Xiaohong Zhang
- Institute of Functional Nano & Soft Materials (FUNSOM), Collaborative Innovation Center of Suzhou Nano Science and Technology (NANO-CIC), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou Jiangsu, 215123, P. R. China
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17
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Lalitha K, Prasad YS, Sridharan V, Maheswari CU, John G, Nagarajan S. A renewable resource-derived thixotropic self-assembled supramolecular gel: magnetic stimuli responsive and real-time self-healing behaviour. RSC Adv 2015. [DOI: 10.1039/c5ra14744a] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A simple fluorescent, self-healing and magnetic responsive molecular gel was developed from a renewable resource.
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Affiliation(s)
- Krishnamoorthy Lalitha
- Organic Synthesis Group
- Department of Chemistry & The Centre for Nanotechnology and Advanced Biomaterials
- School of Chemical and Biotechnology
- SASTRA University
- Thanjavur - 613401
| | - Y. Siva Prasad
- Organic Synthesis Group
- Department of Chemistry & The Centre for Nanotechnology and Advanced Biomaterials
- School of Chemical and Biotechnology
- SASTRA University
- Thanjavur - 613401
| | - Vellaisamy Sridharan
- Organic Synthesis Group
- Department of Chemistry & The Centre for Nanotechnology and Advanced Biomaterials
- School of Chemical and Biotechnology
- SASTRA University
- Thanjavur - 613401
| | - C. Uma Maheswari
- Organic Synthesis Group
- Department of Chemistry & The Centre for Nanotechnology and Advanced Biomaterials
- School of Chemical and Biotechnology
- SASTRA University
- Thanjavur - 613401
| | - George John
- Department of Chemistry
- The City College of New York
- New York
- USA
| | - Subbiah Nagarajan
- Organic Synthesis Group
- Department of Chemistry & The Centre for Nanotechnology and Advanced Biomaterials
- School of Chemical and Biotechnology
- SASTRA University
- Thanjavur - 613401
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18
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Wallace M, Cardoso AZ, Frith WJ, Iggo JA, Adams DJ. Magnetically aligned supramolecular hydrogels. Chemistry 2014; 20:16484-7. [PMID: 25345918 PMCID: PMC4497324 DOI: 10.1002/chem.201405500] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2014] [Indexed: 01/30/2023]
Abstract
The magnetic-field-induced alignment of the fibrillar structures present in an aqueous solution of a dipeptide gelator, and the subsequent retention of this alignment upon transformation to a hydrogel upon the addition of CaCl2 or upon a reduction in solution pH is reported. Utilising the switchable nature of the magnetic field coupled with the slow diffusion of CaCl2 , it is possible to precisely control the extent of anisotropy across a hydrogel, something that is generally very difficult to do using alternative methods. The approach is readily extended to other compounds that form viscous solutions at high pH. It is expected that this work will greatly expand the utility of such low-molecular-weight gelators (LMWG) in areas where alignment is key.
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Affiliation(s)
- Matthew Wallace
- Department of Chemistry, University of LiverpoolCrown Street, Liverpool, L69 7ZD (UK)
| | - Andre Zamith Cardoso
- Department of Chemistry, University of LiverpoolCrown Street, Liverpool, L69 7ZD (UK)
| | - William J Frith
- Unilever R&D Colworth, Colworth Science ParkSharnbrook, Bedfordshire, MK44 1 LQ (UK)
| | - Jonathan A Iggo
- Department of Chemistry, University of LiverpoolCrown Street, Liverpool, L69 7ZD (UK)
| | - Dave J Adams
- Department of Chemistry, University of LiverpoolCrown Street, Liverpool, L69 7ZD (UK)
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19
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Weiss RG. The past, present, and future of molecular gels. What is the status of the field, and where is it going? J Am Chem Soc 2014; 136:7519-30. [PMID: 24836858 DOI: 10.1021/ja503363v] [Citation(s) in RCA: 469] [Impact Index Per Article: 46.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
A Perspective is presented on the history and current understanding of molecular gels and the factors that must be considered to characterize them. The abilities of the most important structural, dynamic, and rheological tools available currently to provide the information necessary to follow the formation of a molecular gel from its initial sol phase and then to define it at different distance and time scales are discussed. Approaches to determining a priori when a molecule will gelate a selected liquid, as well as possible methodologies for overcoming current limitations in understanding molecular gels, are presented. Finally, some of the many potential and realized applications for these materials are enumerated.
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Affiliation(s)
- Richard G Weiss
- Department of Chemistry and Institute for Soft Matter Synthesis and Metrology, Georgetown University , Washington, D.C. 20057-1227, United States
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20
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Glazer PJ, Bergen L, Jennings L, Houtepen AJ, Mendes E, Boukany PE. Generating aligned micellar nanowire arrays by dewetting of micropatterned surfaces. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2014; 10:1729-1734. [PMID: 24532372 DOI: 10.1002/smll.201303414] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2013] [Revised: 12/15/2013] [Indexed: 06/03/2023]
Affiliation(s)
- Piotr J Glazer
- Department of Chemical Engineering, Delft University of Technology, Julianalaan 136, 2628 BL, Delft, The Netherlands
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21
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Takazawa K, Inoue JI, Mitsuishi K. Self-assembled coronene nanofibers: optical waveguide effect and magnetic alignment. NANOSCALE 2014; 6:4174-4181. [PMID: 24608753 DOI: 10.1039/c3nr06760b] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
To fabricate organic nanofibers that function as active optical waveguides with semiconductor properties, a facile procedure was developed to grow single crystalline nanofibers via π-π stacking of the polycyclic aromatic molecule, coronene, through solution evaporation on a substrate. The fabricated nanofibers with millimeter-scale lengths have well-defined shapes, smooth surfaces, and low-defect structures. The nanofibers are demonstrated to function as efficient active waveguides that propagate their fluorescence (FL) along the fiber axis over their entire length. We further demonstrate that the nanofibers can be highly aligned on the substrate when solution evaporation is conducted in a magnetic field of 12 T. The mechanism of the magnetic alignment can be elucidated by considering the anisotropy of the diamagnetic susceptibility of a single coronene molecule and the crystal structure of a nanofiber. Owing to the high degree of alignment, the nanofibers rarely cross each other, allowing for measurement of the waveguiding properties of single isolated nanofibers. The nanofibers propagate their FL of λ > 500 nm with a low propagation loss of 0-3 dB per 100 μm, indicating that the nanofibers function as sub-wavelength scale, low-loss waveguides. Thus, they are promising building blocks for miniaturized optoelectronic circuits.
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Affiliation(s)
- Ken Takazawa
- National Institute for Materials Science, 3-13 Sakura, Tsukuba, 305-0003, Japan.
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22
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Fukino T, Joo H, Hisada Y, Obana M, Yamagishi H, Hikima T, Takata M, Fujita N, Aida T. Manipulation of discrete nanostructures by selective modulation of noncovalent forces. Science 2014; 344:499-504. [PMID: 24786075 DOI: 10.1126/science.1252120] [Citation(s) in RCA: 117] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Covalent organic synthesis commonly uses the strategy of selective bond cleavage and formation. If a similar approach can be applied stepwisely to noncovalent synthesis, more exotic or challenging nanostructures might become achievable. Here, we report that ferrocene-based tetratopic pyridyl ligands, which can dynamically change their geometry by means of thermal rotation of their cyclopentadienyl rings in solution, assemble with AgBF4 into discrete metal-organic nanotubes with large and uniform diameters. The nanotubes can be cut into metal-organic nanorings through selective attenuation of the inter-nanoring interaction via ferrocene oxidation. The resultant nanorings can be transferred onto inorganic substrates electrostatically or allowed to reassemble to form the original nanotube by the reductive neutralization of their oxidized ferrocene units.
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Affiliation(s)
- Takahiro Fukino
- Department of Chemistry and Biotechnology, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
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23
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Olive AGL, Abdullah NH, Ziemecka I, Mendes E, Eelkema R, van Esch JH. Spatial and Directional Control over Self-Assembly Using Catalytic Micropatterned Surfaces. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201310776] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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24
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Olive AGL, Abdullah NH, Ziemecka I, Mendes E, Eelkema R, van Esch JH. Spatial and directional control over self-assembly using catalytic micropatterned surfaces. Angew Chem Int Ed Engl 2014; 53:4132-6. [PMID: 24615796 DOI: 10.1002/anie.201310776] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2013] [Indexed: 01/03/2023]
Abstract
Catalyst-assisted self-assembly is widespread in nature to achieve spatial control over structure formation. Reported herein is the formation of hydrogel micropatterns on catalytic surfaces. Gelator precursors react on catalytic sites to form building blocks which can self-assemble into nanofibers. The resulting structures preferentially grow where the catalyst is present. Not only is a first level of organization, allowing the construction of hydrogel micropatterns, achieved but a second level of organization is observed among fibers. Indeed, fibers grow with their main axis perpendicular to the substrate. This feature is directly linked to a unique mechanism of fiber formation for a synthetic system. Building blocks are added to fibers in a confined space at the solid-liquid interface.
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Affiliation(s)
- Alexandre G L Olive
- Advanced Soft Matter Group, Department of Chemical Engineering, Delft University of Technology, Julianalaan 136, 2628 BL Delft (The Netherlands)
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25
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Rikken RSM, Nolte RJM, Maan JC, van Hest JCM, Wilson DA, Christianen PCM. Manipulation of micro- and nanostructure motion with magnetic fields. SOFT MATTER 2014; 10:1295-308. [PMID: 24652392 DOI: 10.1039/c3sm52294f] [Citation(s) in RCA: 99] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
In this review we will focus on how magnetic fields can be used to manipulate the motion of various micro- and nanostructures in solution. We will distinguish between ferromagnetic, paramagnetic and diamagnetic materials. Furthermore, the use of various kinds of magnetic fields, such as homogeneous, inhomogeneous and rotating magnetic fields, is discussed. To date most research has focused on the use of ferro- and paramagnetic materials, but here we also describe the possibilities of magnetic manipulation of diamagnetic materials. Since the vast majority of soft matter is diamagnetic, this paves the way for many new applications to manipulate the motion of micro- and nanostructures.
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Affiliation(s)
- Roger S M Rikken
- High Field Magnet Laboratory (HFML), Radboud University Nijmegen, Toernooiveld 7, 6525 ED Nijmegen, The Netherlands.
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26
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Babu SS, Praveen VK, Ajayaghosh A. Functional π-gelators and their applications. Chem Rev 2014; 114:1973-2129. [PMID: 24400783 DOI: 10.1021/cr400195e] [Citation(s) in RCA: 1220] [Impact Index Per Article: 122.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Sukumaran Santhosh Babu
- Photosciences and Photonics Group, Chemical Sciences and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST) , Trivandrum 695019, India
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27
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Rajkamal R, Chatterjee D, Paul A, Banerjee S, Yadav S. Enantiomeric organogelators from d-/l-arabinose for phase selective gelation of crude oil and their gel as a photochemical micro-reactor. Chem Commun (Camb) 2014; 50:12131-4. [DOI: 10.1039/c4cc05950f] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Easy access via single steps to each enantiomer of a simple chiral organogelator, their gelation abilities and applications are reported.
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Affiliation(s)
- Rajkamal Rajkamal
- Department of Applied Chemistry
- Indian School of Mines
- Dhanbad - 826004, India
| | - Debnath Chatterjee
- Department of Applied Chemistry
- Indian School of Mines
- Dhanbad - 826004, India
| | - Abhijit Paul
- Department of Applied Chemistry
- Indian School of Mines
- Dhanbad - 826004, India
| | | | - Somnath Yadav
- Department of Applied Chemistry
- Indian School of Mines
- Dhanbad - 826004, India
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28
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Yan D, Williams GR, Zhao M, Li C, Fan G, Yang H. Flexible free-standing luminescent two-component fiber films with tunable hierarchical structures based on hydrogen-bonding architecture. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:15673-15681. [PMID: 24274340 DOI: 10.1021/la4034657] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Although the fabrication of hierarchical architectures with highly ordered functional units is of great importance for both fundamental science and practical application, the development of one-dimensional (1D) organic hierarchical micro/nanostructures based on low-molecular-weight (LMW) building blocks remains at an early stage. Herein, we report two types of micro/nanoscaled multicomponent fluorescent fiber systems with tunable hierarchical morphologies through a one-step coassembly process. With the aid of hydrogen-bonding motifs, LMW precursors (1,4-bis(5-phenyloxazol-2-yl)benzene (A) and two coassembled building blocks: 4-bromotetrafluorobenzene carboxylic acid (B) and 2,3,4,5,6-pentafluorophenol (C)) have been self-organized into fibers and flexible free-standing films, which show hierarchical micro/nanostructures as well as tunable one-/two-photon luminescence. The disassembly of the multicomponent A.B and A.C fibers occurs at high temperature, which further alters the luminescence properties of the multicomponent materials. Therefore, this work provides a facile wet chemical route for fabricating multicomponent LMW self-assembled fibers and free-standing film systems with tunable hierarchical structures and photoemission behaviors, and such self-organized systems may have potential applications in fields of two-photon luminescence and thermal sensors.
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Affiliation(s)
- Dongpeng Yan
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology , Beijing 100029, P. R. China
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29
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Liebi M, Kuster S, Kohlbrecher J, Ishikawa T, Fischer P, Walde P, Windhab EJ. Cholesterol-diethylenetriaminepentaacetate complexed with thulium ions integrated into bicelles to increase their magnetic alignability. J Phys Chem B 2013; 117:14743-8. [PMID: 24205912 DOI: 10.1021/jp406599c] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Lanthanides have been used for several decades to increase the magnetic alignability of bicelles. DMPE-DTPA (1,2-dimyristoyl-sn-glycero-3-phospho-ethanolamine-diethylenetriaminepentaacetate) is commonly applied to anchor the lanthanides into the bicelles. However, because DMPE-DTPA has the tendency to accumulate at the highly curved edge region of the bicelles and if located there does not contribute to the magnetic orientation energy, we have tested cholesterol-DTPA complexed with thulium ions (Tm(3+)) as an alternative chelator to increase the magnetic alignability. Differential scanning calorimetric (DSC) measurements indicate the successful integration of cholesterol-DTPA into a DMPC (1,2-dimyristoyl-sn-glycero-3-phosphocholine) bilayer. Cryo transmission electron microscopy and small-angle neutron scattering (SANS) measurements show that the disklike structure, that is, bicelles, is maintained if cholesterol-DTPA·Tm(3+) is integrated into a mixture of DMPC, cholesterol, and DMPE-DTPA·Tm(3+). The size of the bicelles is increased compared to the size of the bicelles obtained from mixtures without cholesterol-DTPA·Tm(3+). Magnetic-field-induced birefringence and SANS measurements in a magnetic field show that with addition of cholesterol-DTPA·Tm(3+) the magnetic alignability of these bicelles is significantly increased compared to bicelles composed of DMPC, cholesterol, and DMPE-DTPA·Tm(3+) only.
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Affiliation(s)
- Marianne Liebi
- Laboratory of Food Process Engineering, ETH Zurich , Schmelzbergstrasse 9, 8092 Zurich, Switzerland
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30
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Dama M, Berger S. Study of an Organogelator by Diffusion-Ordered NMR Spectroscopy. J Phys Chem B 2013; 117:5788-91. [DOI: 10.1021/jp401963t] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Murali Dama
- Institute of Analytical Chemistry, University of Leipzig, Johannisallee 29, 04103 Leipzig,
Germany
| | - Stefan Berger
- Institute of Analytical Chemistry, University of Leipzig, Johannisallee 29, 04103 Leipzig,
Germany
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31
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Liebi M, van Rhee PG, Christianen PCM, Kohlbrecher J, Fischer P, Walde P, Windhab EJ. Alignment of bicelles studied with high-field magnetic birefringence and small-angle neutron scattering measurements. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:3467-3473. [PMID: 23406168 DOI: 10.1021/la3050785] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Birefringence measurements at high magnetic field strength of up to 33 T were used to detect magnetically induced alignment of bicelles composed of 1,2-dimyristoyl-sn-glycero-3-phosphocholine (DMPC), cholesterol, and 1,2-dimyristoyl-sn-glycero-3-phosphoethanolamine-diethylenetriaminepentaacetate (DMPE-DTPA) with complexed lanthanide ions. These birefringence measurements together with a small-angle neutron scattering (SANS) analysis in a magnetic field showed parallel alignment of the bicelles if the lanthanide was thulium (Tm(3+)), and perpendicular alignment with dysprosium (Dy(3+)). With the birefringence measurements, the order parameter S can be determined as a function of the magnetic field strength, if the magnetic alignment reaches saturation. Additional structural information can be obtained if the maximum induced birefringence is considered. The degree of alignment of the studied bicelles increased with decreasing temperature from 40 to 5 °C and showed a new bicellar structure comprising a transient hole formation at intermediate temperatures (20 °C) during heating from 5 to 40 °C.
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Affiliation(s)
- Marianne Liebi
- Laboratory of Food Process Engineering, ETH Zurich, Zurich, Switzerland
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32
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Huang H, Zhu X, Su L, Wang H, Yang Y. Effect of temperature on self-assembly/disassembly transition of dialkylurea supramolecular gels at high pressure. RSC Adv 2013. [DOI: 10.1039/c3ra41540f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
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33
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34
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35
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Liebi M, Kohlbrecher J, Ishikawa T, Fischer P, Walde P, Windhab EJ. Cholesterol increases the magnetic aligning of bicellar disks from an aqueous mixture of DMPC and DMPE-DTPA with complexed thulium ions. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:10905-10915. [PMID: 22724540 DOI: 10.1021/la3019327] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Aqueous mixtures of 1,2-dimyristoyl-sn-glycero-3-phosphocholine (DMPC), 1,2-dimyristoyl-sn-glycero-3-phosphoethanolamine-diethylenetriamine pentaacetate (DMPE-DTPA) with complexed thulium ions (Tm(3+)), and cholesterol with varying molar ratio were studied at different temperatures in the presence and absence of a magnetic field. For mixtures without cholesterol weakly magnetically alignable small disks, so-called bicelles, are formed at temperatures below the phase transition temperature (5-22 °C), as shown by cryo-transmission electron microscopy (cryo-TEM) and small-angle neutron scattering (SANS). In presence of 16 mol % cholesterol the disk size and the magnetic alignability were larger within the entire temperature range studied (5-40 °C). Cholesterol acts as a spacer between DMPE-DTPA with complexed Tm(3+), allowing these molecules to integrate more frequently into the planar part of the bicelles. Replacing DMPC partially by cholesterol thus lead to an increase in magnetic aligning by a higher amount of the magnetic handles (Tm(3+) complexed to DMPE-DTPA) in the plane and by an increased number of phospholipids in the enlarged bicelles. The magnetic aligning was most pronounced at 5 °C. The temperature-dependent structural changes of the DMPC/cholesterol/DMPE-DTPA/Tm(3+) aqueous mixtures are complex, including the transient appearance of holes in the disks at intermediate temperatures.
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Affiliation(s)
- Marianne Liebi
- Laboratory of Food Process Engineering, ETH Zurich, Schmelzbergstrasse 9, 8092 Zurich, Switzerland
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36
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Su B, Wang S, Wu Y, Chen X, Song Y, Jiang L. Small molecular nanowire arrays assisted by superhydrophobic pillar-structured surfaces with high adhesion. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2012; 24:2780-2785. [PMID: 22511447 DOI: 10.1002/adma.201200294] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2012] [Revised: 02/23/2012] [Indexed: 05/31/2023]
Abstract
Elaborately programmed fluorescent calcein nanowire arrays can be prepared with the aid of superhydrophobic pillar-structured surfaces with high adhesion. Each nanowire can be precisely positioned by well designed tip-structured micropillars, indicating an advance in the methodologies of controlling small molecular 1D organic nanostructures. The as-prepared fluorescent nanowire arrays can serve as a ferrous salt sensing device.
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Affiliation(s)
- Bin Su
- Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, PR China
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37
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Su B, Wu Y, Jiang L. The art of aligning one-dimensional (1D) nanostructures. Chem Soc Rev 2012; 41:7832-56. [DOI: 10.1039/c2cs35187k] [Citation(s) in RCA: 162] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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38
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Zhang Y, Jiang S. Fluoride-responsive gelator and colorimetric sensor based on simple and easy-to-prepare cyano-substituted amide. Org Biomol Chem 2012; 10:6973-9. [DOI: 10.1039/c2ob26016f] [Citation(s) in RCA: 66] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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39
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Cheng M, Gao H, Zhang Y, Tremel W, Chen JF, Shi F, Knoll W. Combining magnetic field induced locomotion and supramolecular interaction to micromanipulate glass fibers: toward assembly of complex structures at mesoscale. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:6559-6564. [PMID: 21542598 DOI: 10.1021/la201399w] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
The formation of ordered complex structures is one of the most challenging fields in the research of biomimic materials because those structures are promising with respect to improving the physical and mechanical properties of man-made materials. In this letter, we have developed a novel approach to fabricating complex structures on the mesoscale by combining magnetic-field-induced locomotion and supramolecular-interaction-assisted immobilization. We have employed a magnetic field to locomote the glass fiber, which was modified by the layer-by-layer self-assembly of magnetic nanoparticles, to desired positions and have exploited the supramolecular interaction to immobilize glass fiber onto the appointed position. By magnetically induced micromanipulation, we can drive another fiber across the former one and finally obtain a crossing structure, which can lead to more complex structures on the mesocale. Moreover, we have constructed a mesoscale structure, termed "CHEM", to demonstrate further the application of this method.
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Affiliation(s)
- Mengjiao Cheng
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, PR China
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Wen Y, Liu Y, Guo Y, Yu G, Hu W. Experimental Techniques for the Fabrication and Characterization of Organic Thin Films for Field-Effect Transistors. Chem Rev 2011; 111:3358-406. [DOI: 10.1021/cr1001904] [Citation(s) in RCA: 214] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yugeng Wen
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Yunqi Liu
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Yunlong Guo
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Gui Yu
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Wenping Hu
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
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Giansante C, Raffy G, Schäfer C, Rahma H, Kao MT, Olive AGL, Del Guerzo A. White-Light-Emitting Self-Assembled NanoFibers and Their Evidence by Microspectroscopy of Individual Objects. J Am Chem Soc 2010; 133:316-25. [DOI: 10.1021/ja106807u] [Citation(s) in RCA: 160] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Carlo Giansante
- Université Bordeaux 1, CNRS, Institut des Sciences Moléculaires, NEO Nanostructures Organiques, 351 crs de la Liberation, 33405 Talence cédex, France
| | - Guillaume Raffy
- Université Bordeaux 1, CNRS, Institut des Sciences Moléculaires, NEO Nanostructures Organiques, 351 crs de la Liberation, 33405 Talence cédex, France
| | - Christian Schäfer
- Université Bordeaux 1, CNRS, Institut des Sciences Moléculaires, NEO Nanostructures Organiques, 351 crs de la Liberation, 33405 Talence cédex, France
| | - Hakim Rahma
- Université Bordeaux 1, CNRS, Institut des Sciences Moléculaires, NEO Nanostructures Organiques, 351 crs de la Liberation, 33405 Talence cédex, France
| | - Min-Tzu Kao
- Université Bordeaux 1, CNRS, Institut des Sciences Moléculaires, NEO Nanostructures Organiques, 351 crs de la Liberation, 33405 Talence cédex, France
| | - Alexandre G. L. Olive
- Université Bordeaux 1, CNRS, Institut des Sciences Moléculaires, NEO Nanostructures Organiques, 351 crs de la Liberation, 33405 Talence cédex, France
| | - André Del Guerzo
- Université Bordeaux 1, CNRS, Institut des Sciences Moléculaires, NEO Nanostructures Organiques, 351 crs de la Liberation, 33405 Talence cédex, France
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Terech P, Aymonier C, Loppinet-Serani A, Bhat S, Banerjee S, Das R, Maitra U, Del Guerzo A, Desvergne JP. Structural Relationships in 2,3-Bis-n-decyloxyanthracene and 12-Hydroxystearic Acid Molecular Gels and Aerogels Processed in Supercritical CO2. J Phys Chem B 2010; 114:11409-19. [DOI: 10.1021/jp104818x] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Pierre Terech
- INAC/SPrAM, UMR 5819 (CEA-CNRS-UJF) CEA-Grenoble, 38054 Grenoble cedex 9, France, CNRS, Université de Bordeaux, ICMCB, 87 Avenue du Dr. Albert Schweitzer, 33608 Pessac Cedex, France, Department of Organic Chemistry, Indian Institute of Science, Bangalore 560012, India, and Groupe Nanostructures Organiques, Institut des Sciences Moléculaires UMR 5525, Université Bordeaux 1, CNRS, 351 Cours de la Libération, 33405 Talence Cedex, France
| | - Cyril Aymonier
- INAC/SPrAM, UMR 5819 (CEA-CNRS-UJF) CEA-Grenoble, 38054 Grenoble cedex 9, France, CNRS, Université de Bordeaux, ICMCB, 87 Avenue du Dr. Albert Schweitzer, 33608 Pessac Cedex, France, Department of Organic Chemistry, Indian Institute of Science, Bangalore 560012, India, and Groupe Nanostructures Organiques, Institut des Sciences Moléculaires UMR 5525, Université Bordeaux 1, CNRS, 351 Cours de la Libération, 33405 Talence Cedex, France
| | - Anne Loppinet-Serani
- INAC/SPrAM, UMR 5819 (CEA-CNRS-UJF) CEA-Grenoble, 38054 Grenoble cedex 9, France, CNRS, Université de Bordeaux, ICMCB, 87 Avenue du Dr. Albert Schweitzer, 33608 Pessac Cedex, France, Department of Organic Chemistry, Indian Institute of Science, Bangalore 560012, India, and Groupe Nanostructures Organiques, Institut des Sciences Moléculaires UMR 5525, Université Bordeaux 1, CNRS, 351 Cours de la Libération, 33405 Talence Cedex, France
| | - Shreedhar Bhat
- INAC/SPrAM, UMR 5819 (CEA-CNRS-UJF) CEA-Grenoble, 38054 Grenoble cedex 9, France, CNRS, Université de Bordeaux, ICMCB, 87 Avenue du Dr. Albert Schweitzer, 33608 Pessac Cedex, France, Department of Organic Chemistry, Indian Institute of Science, Bangalore 560012, India, and Groupe Nanostructures Organiques, Institut des Sciences Moléculaires UMR 5525, Université Bordeaux 1, CNRS, 351 Cours de la Libération, 33405 Talence Cedex, France
| | - Supratim Banerjee
- INAC/SPrAM, UMR 5819 (CEA-CNRS-UJF) CEA-Grenoble, 38054 Grenoble cedex 9, France, CNRS, Université de Bordeaux, ICMCB, 87 Avenue du Dr. Albert Schweitzer, 33608 Pessac Cedex, France, Department of Organic Chemistry, Indian Institute of Science, Bangalore 560012, India, and Groupe Nanostructures Organiques, Institut des Sciences Moléculaires UMR 5525, Université Bordeaux 1, CNRS, 351 Cours de la Libération, 33405 Talence Cedex, France
| | - Rajat Das
- INAC/SPrAM, UMR 5819 (CEA-CNRS-UJF) CEA-Grenoble, 38054 Grenoble cedex 9, France, CNRS, Université de Bordeaux, ICMCB, 87 Avenue du Dr. Albert Schweitzer, 33608 Pessac Cedex, France, Department of Organic Chemistry, Indian Institute of Science, Bangalore 560012, India, and Groupe Nanostructures Organiques, Institut des Sciences Moléculaires UMR 5525, Université Bordeaux 1, CNRS, 351 Cours de la Libération, 33405 Talence Cedex, France
| | - Uday Maitra
- INAC/SPrAM, UMR 5819 (CEA-CNRS-UJF) CEA-Grenoble, 38054 Grenoble cedex 9, France, CNRS, Université de Bordeaux, ICMCB, 87 Avenue du Dr. Albert Schweitzer, 33608 Pessac Cedex, France, Department of Organic Chemistry, Indian Institute of Science, Bangalore 560012, India, and Groupe Nanostructures Organiques, Institut des Sciences Moléculaires UMR 5525, Université Bordeaux 1, CNRS, 351 Cours de la Libération, 33405 Talence Cedex, France
| | - André Del Guerzo
- INAC/SPrAM, UMR 5819 (CEA-CNRS-UJF) CEA-Grenoble, 38054 Grenoble cedex 9, France, CNRS, Université de Bordeaux, ICMCB, 87 Avenue du Dr. Albert Schweitzer, 33608 Pessac Cedex, France, Department of Organic Chemistry, Indian Institute of Science, Bangalore 560012, India, and Groupe Nanostructures Organiques, Institut des Sciences Moléculaires UMR 5525, Université Bordeaux 1, CNRS, 351 Cours de la Libération, 33405 Talence Cedex, France
| | - Jean-Pierre Desvergne
- INAC/SPrAM, UMR 5819 (CEA-CNRS-UJF) CEA-Grenoble, 38054 Grenoble cedex 9, France, CNRS, Université de Bordeaux, ICMCB, 87 Avenue du Dr. Albert Schweitzer, 33608 Pessac Cedex, France, Department of Organic Chemistry, Indian Institute of Science, Bangalore 560012, India, and Groupe Nanostructures Organiques, Institut des Sciences Moléculaires UMR 5525, Université Bordeaux 1, CNRS, 351 Cours de la Libération, 33405 Talence Cedex, France
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Kato T, Shoji Y, Yoshio M, Yamane S, Yasuda T. Functional Soft Materials: Nanostructured Liquid Crystals and Self-Assembled Fibrous Aggregates. J SYN ORG CHEM JPN 2010. [DOI: 10.5059/yukigoseikyokaishi.68.1169] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Shoji Y, Yoshio M, Yasuda T, Funahashi M, Kato T. Alignment of photoconductive self-assembled fibers composed of π-conjugated molecules under electric fields. ACTA ACUST UNITED AC 2010. [DOI: 10.1039/b915822g] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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45
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Bhattacharya S, Samanta SK. Soft functional materials induced by fibrillar networks of small molecular photochromic gelators. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2009; 25:8378-8381. [PMID: 19537832 DOI: 10.1021/la901017u] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Low-molecular-mass organogelators (LMOGs) based on photochromic molecules aggregate in selected solvents to form gels through various spatio-temporal interactions. The factors that control the mode of aggregation of the chromophoric core in the LMOGs during gelation, gelation-induced changes in fluorescence, the formation of stacked superstructures of extended pi-conjugated systems, and so forth are discussed with selected examples. Possible ways of generating various light-harvesting assemblies are proposed, and some unresolved questions, future challenges, and their possible solutions on this topic are presented.
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Affiliation(s)
- Santanu Bhattacharya
- Department of Organic Chemistry, Indian Institute of Science, Bangalore 560 012, India.
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Olive AGL, Raffy G, Allouchi H, Léger JM, Del Guerzo A, Desvergne JP. Striking correlation between the unusual trigonal crystal packing and the ability to self-assemble into nanofibers of 2,3-di-n-alkyloxyanthracenes. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2009; 25:8606-8614. [PMID: 19301876 DOI: 10.1021/la804206n] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
The space group of the crystals of derivatives of 2,3-dialkoxyanthracenes is monoclinic P2(1)/a (herringbone structure) with the linear ethyl or propyl chains but abruptly changes to the trigonal P3 or R3 space group for butyl to heptyl chains. Strikingly, this switch is correlated with the capacity of these compounds to self-assemble into nanofibers and organogels. Besides, compounds with a chain length exceeding seven carbon atoms could not be crystallized in accordance with the analysis of the projected crystal structure but are nevertheless excellent organogelators. The study of this series of compounds suggests a tight link between the molecular structure of the crystals and that of the organogels.
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Affiliation(s)
- Alexandre G L Olive
- Université Bordeaux 1, CNRS, Institut des Sciences Moléculaires UMR 5255, Nanostructures Organiques NEO, 33405 Talence, France
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47
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Yoshio M, Shoji Y, Tochigi Y, Nishikawa Y, Kato T. Electric Field-Assisted Alignment of Self-Assembled Fibers Composed of Hydrogen-Bonded Molecules Having Laterally Fluorinated Mesogens. J Am Chem Soc 2009; 131:6763-7. [DOI: 10.1021/ja8093718] [Citation(s) in RCA: 65] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Masafumi Yoshio
- Department of Chemistry and Biotechnology, School of Engineering, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Yoshiko Shoji
- Department of Chemistry and Biotechnology, School of Engineering, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Yusuke Tochigi
- Department of Chemistry and Biotechnology, School of Engineering, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Yohei Nishikawa
- Department of Chemistry and Biotechnology, School of Engineering, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Takashi Kato
- Department of Chemistry and Biotechnology, School of Engineering, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
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48
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Hirst AR, Escuder B, Miravet JF, Smith DK. High-tech applications of self-assembling supramolecular nanostructured gel-phase materials: from regenerative medicine to electronic devices. Angew Chem Int Ed Engl 2008; 47:8002-18. [PMID: 18825737 DOI: 10.1002/anie.200800022] [Citation(s) in RCA: 923] [Impact Index Per Article: 57.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
It is likely that nanofabrication will underpin many technologies in the 21st century. Synthetic chemistry is a powerful approach to generate molecular structures that are capable of assembling into functional nanoscale architectures. There has been intense interest in self-assembling low-molecular-weight gelators, which has led to a general understanding of gelation based on the self-assembly of molecular-scale building blocks in terms of non-covalent interactions and packing parameters. The gelator molecules generate hierarchical, supramolecular structures that are macroscopically expressed in gel formation. Molecular modification can therefore control nanoscale assembly, a process that ultimately endows specific material function. The combination of supramolecular chemistry, materials science, and biomedicine allows application-based materials to be developed. Regenerative medicine and tissue engineering using molecular gels as nanostructured scaffolds for the regrowth of nerve cells has been demonstrated in vivo, and the prospect of using self-assembled fibers as one-dimensional conductors in gel materials has captured much interest in the field of nanoelectronics.
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Affiliation(s)
- Andrew R Hirst
- Department of Chemistry, University of York, Heslington, York, YO10 5DD, UK
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Hirst A, Escuder B, Miravet J, Smith D. “High-Tech”-Anwendungen von supramolekularen nanostrukturierten Gelmaterialien - von der regenerativen Medizin bis hin zu elektronischen Bauelementen. Angew Chem Int Ed Engl 2008. [DOI: 10.1002/ange.200800022] [Citation(s) in RCA: 187] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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