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Gustavsson L, Lv ZP, Cherian T, Seppälä W, Liljeström V, Peng B, Huotari S, Rannou P, Ikkala O. Heating-Induced Switching to Hierarchical Liquid Crystallinity Combining Colloidal and Molecular Order in Zwitterionic Molecules. ACS Omega 2023; 8:39345-39353. [PMID: 37901556 PMCID: PMC10601052 DOI: 10.1021/acsomega.3c04914] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/09/2023] [Accepted: 09/27/2023] [Indexed: 10/31/2023]
Abstract
Hierarchical self-assemblies of soft matter involving triggerable or switchable structures at different length scales have been pursued toward multifunctional behaviors and complexity inspired by biological matter. They require several and balanced competing attractive and repulsive interactions, which provide a grand challenge in particular in the "bulk" state, i.e., in the absence of plasticizing solvents. Here, we disclose that zwitterionic bis-n-tetradecylphosphobetaine, as a model compound, shows a complex thermally switchable hierarchical self-assembly in the solvent-free state. It shows polymorphism and heating-induced reversible switching from low-temperature molecular-level assemblies to high-temperature hierarchical self-assemblies, unexpectedly combining colloidal and molecular self-assemblies, as inferred by synchrotron small-angle X-ray scattering (SAXS). The high-temperature phase sustains birefringent flow, indicating a new type of hierarchical thermotropic liquid crystallinity. The high-temperature colloidal-level SAXS reflections suggest indexation as a 2D oblique pattern and their well-defined layer separation in the perpendicular direction. We suggest that the colloidal self-assembled motifs are 2D nanoplatelets formed by the lateral packing of the molecules, where the molecular packing frustration between the tightly packed zwitterionic moieties and the coiled alkyl chains demanding more space limits the lateral platelet growth controlled by the alkyl stretching entropy. An indirect proof is provided by the addition of plasticizing ionic liquids, which relieve the ionic dense packings of zwitterions, thus allowing purely smectic liquid crystallinity without the colloidal level order. Thus, molecules with a simple chemical structure can lead to structural hierarchy and tunable complexity in the solvent-free state by balancing the competing long-range electrostatics and short-range nanosegregations.
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Affiliation(s)
- Lotta Gustavsson
- Department
of Applied Physics, Aalto University, Puumiehenkuja 2, FI-00076 Espoo, Finland
| | - Zhong-Peng Lv
- Department
of Applied Physics, Aalto University, Puumiehenkuja 2, FI-00076 Espoo, Finland
| | - Tomy Cherian
- Department
of Applied Physics, Aalto University, Puumiehenkuja 2, FI-00076 Espoo, Finland
| | - Wille Seppälä
- Department
of Applied Physics, Aalto University, Puumiehenkuja 2, FI-00076 Espoo, Finland
| | - Ville Liljeström
- Nanomicroscopy
Center, Aalto University, Puumiehenkuja 2, FI-00076 Espoo, Finland
| | - Bo Peng
- Department
of Applied Physics, Aalto University, Puumiehenkuja 2, FI-00076 Espoo, Finland
| | - Simo Huotari
- Department
of Physics, University of Helsinki, P.O. Box 64, FI-00014 Helsinki, Finland
| | - Patrice Rannou
- Université
Grenoble Alpes, Université Savoie Mont-Blanc, CNRS, Grenoble
INP, LEPMI, 38000 Grenoble, France
| | - Olli Ikkala
- Department
of Applied Physics, Aalto University, Puumiehenkuja 2, FI-00076 Espoo, Finland
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Perju E, Marin L. Mesomorphic Behavior of Symmetric Azomethine Dimers Containing Different Chromophore Groups. Molecules 2021; 26:2183. [PMID: 33920141 DOI: 10.3390/molecules26082183] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Revised: 04/05/2021] [Accepted: 04/09/2021] [Indexed: 11/17/2022] Open
Abstract
A series of new azomethine dimers was synthesized by the condensation reaction of flexible bis-benzaldehydes with four aromatic amines containing phenyl, naphthyl, anthracene and pyrene groups. Their right structure was confirmed by FTIR and 1H-NMR spectroscopy and their thermal properties were investigated by thermogravimetric analysis, differential scanning calorimetry and polarized light optical microscopy. A view on their photophysical behavior was gained by UV-vis and photoluminescence spectroscopy. The dimers containing pyrene and anthracene presented liquid crystalline behavior, while the other dimers were crystalline compounds. Two dimers containing pyrene moieties formed mesomorphic glasses and had intense luminescence, promising properties for applications in building optoelectronic devices.
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Zhang L, Li Q, Hu R, Luan L. A Thermally Stable Polyamine/Unsaturated Fatty Acid System: Gelation Behaviors and Application. J SURFACTANTS DETERG 2019. [DOI: 10.1002/jsde.12288] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Li Zhang
- Shandong Analysis and Test CentreQilu University of Technology (Shandong Academy of Sciences) Jinan 250014 China
| | - Qin‐Tang Li
- State Key Laboratory of Environment‐Friendly Energy Materials, School of Materials Science and EngineeringSouthwest University of Science and Technology Mianyang 621010 China
| | - Run‐Tao Hu
- Key Laboratory of Colloid and Interface Chemistry, Ministry of EducationShandong University Jinan 250100 China
| | - Ling‐Yu Luan
- Shandong Analysis and Test CentreQilu University of Technology (Shandong Academy of Sciences) Jinan 250014 China
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Sajjadi AY, Manstein D, Carp SA. Measuring Temperature Induced Phase Change Kinetics in Subcutaneous Adipose Tissues Using Near Infrared Spectroscopy, MR Imaging and Spectroscopy and OCT. Sci Rep 2017; 7:17786. [PMID: 29259284 DOI: 10.1038/s41598-017-18145-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2017] [Accepted: 12/01/2017] [Indexed: 11/16/2022] Open
Abstract
Monitoring phase transition in adipose tissue and formation of lipid crystals is important in Cryo-procedures such as Selective Cryolipolysis (SC). We exploited a Near-Infrared Spectroscopy (NIRS) method to monitor the onset of fat phase transition (freezing/melting) in human abdominal adipose tissue. The changes in optical scattering were compared to Differential Scanning Calorimetry (DSC) measurements as the gold standard method for measuring phase transition. For some samples, concurrent in vitro measurements of optical scattering using NIRS and the MR signal parameters (T2*) as well as spectral parameters using MR Spectroscopy were performed in a 3 T MR scanner during a cooling/heating cycle. To further investigate phase-transition in adipose tissue in microscopic level, an identical cooling/heating procedure was replicated on a small piece of fat harvested from the same tissue while being imaged under Optical Coherence Tomography (OCT). For all methods, their relationship with temperature shows inflexions in a narrow range, characteristic of lipid phase transition. In particular, the good agreement between DSC and Optical measurements suggests that such NIRS methods can be used to improve dosimetry and to minimize variations of clinical outcome for cryo-procedures.
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Abstract
We investigate the dynamics of water confined in soft ionic nano-assemblies, an issue critical for a general understanding of the multi-scale structure-function interplay in advanced materials. We focus in particular on hydrated perfluoro-sulfonic acid compounds employed as electrolytes in fuel cells. These materials form phase-separated morphologies that show outstanding proton-conducting properties, directly related to the state and dynamics of the absorbed water. We have quantified water motion and ion transport by combining Quasi Elastic Neutron Scattering, Pulsed Field Gradient Nuclear Magnetic Resonance, and Molecular Dynamics computer simulation. Effective water and ion diffusion coefficients have been determined together with their variation upon hydration at the relevant atomic, nanoscopic and macroscopic scales, providing a complete picture of transport. We demonstrate that confinement at the nanoscale and direct interaction with the charged interfaces produce anomalous sub-diffusion, due to a heterogeneous space-dependent dynamics within the ionic nanochannels. This is irrespective of the details of the chemistry of the hydrophobic confining matrix, confirming the statistical significance of our conclusions. Our findings turn out to indicate interesting connections and possibilities of cross-fertilization with other domains, including biophysics. They also establish fruitful correspondences with advanced topics in statistical mechanics, resulting in new possibilities for the analysis of Neutron scattering data.
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Affiliation(s)
- Quentin Berrod
- LLB, CEA, CNRS, Université Paris-Saclay, CEA Saclay, 91191, Gif-sur-Yvette, France
- Lawrence Berkeley National Laboratory, Energy Storage Group, 94720, Berkeley, USA
| | - Samuel Hanot
- Institut Laue-Langevin, 71 Avenue des Martyrs, CS, 20156 - 38042, Grenoble, France
- Unité de Bioinformatique Structurale, Institut Pasteur, Paris, France
- UMR 3528, CNRS, Paris, France
| | - Armel Guillermo
- Univ. Grenoble Alpes, CEA, CNRS, INAC, SYMMES, F-38000, Grenoble, France
| | - Stefano Mossa
- Univ. Grenoble Alpes, CEA, CNRS, INAC, SYMMES, F-38000, Grenoble, France.
| | - Sandrine Lyonnard
- Univ. Grenoble Alpes, CEA, CNRS, INAC, SYMMES, F-38000, Grenoble, France.
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Berrod Q, Lyonnard S, Guillermo A, Ollivier J, Frick B, Manseri A, Améduri B, Gébel G. Nanostructure and Transport Properties of Proton Conducting Self-Assembled Perfluorinated Surfactants: A Bottom-Up Approach toward PFSA Fuel Cell Membranes. Macromolecules 2015. [DOI: 10.1021/acs.macromol.5b00770] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Quentin Berrod
- CNRS/CEA-INAC-SPrAM, F-38000 Grenoble, France
- Université
Grenoble-Alpes, F-38000 Grenoble, France
| | - Sandrine Lyonnard
- CNRS/CEA-INAC-SPrAM, F-38000 Grenoble, France
- Université
Grenoble-Alpes, F-38000 Grenoble, France
| | - Armel Guillermo
- CNRS/CEA-INAC-SPrAM, F-38000 Grenoble, France
- Université
Grenoble-Alpes, F-38000 Grenoble, France
| | | | | | - Abdelatif Manseri
- UMR CNRS 5253, Institut Charles Gerhardt Ingenierie & Architectures Macromoleculaires, Ecole Nationale Superieure de Chimie Montpellier, 8 Rue Ecole Normale, F-34296 Montpellier, France
| | - Bruno Améduri
- UMR CNRS 5253, Institut Charles Gerhardt Ingenierie & Architectures Macromoleculaires, Ecole Nationale Superieure de Chimie Montpellier, 8 Rue Ecole Normale, F-34296 Montpellier, France
| | - Gérard Gébel
- Université
Grenoble-Alpes, F-38000 Grenoble, France
- CEA, LITEN, DTNM, F-38054 Grenoble, France
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Xu W, Gu H, Zhu X, Zhong Y, Jiang L, Xu M, Song A, Hao J. CO2-Controllable Foaming and Emulsification Properties of the Stearic Acid Soap Systems. Langmuir 2015; 31:5758-5766. [PMID: 25961406 DOI: 10.1021/acs.langmuir.5b01295] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Fatty acids, as a typical example of stearic acid, are a kind of cheap surfactant and have important applications. The challenging problem of industrial applications is their solubility. Herein, three organic amines-ethanolamine (EA), diethanolamine (DEA), and triethanolamine (TEA)-were used as counterions to increase the solubility of stearic acid, and the phase behaviors were investigated systematically. The phase diagrams were delineated at 25 and 50 °C, respectively. The phase-transition temperature was measured by differential scanning calorimetry (DSC) measurements, and the microstructures were vesicles and planar sheets observed by cryogenic transmission electron microscopy (cryo-TEM) observations. The apparent viscosity of the samples was determined by rheological characterizations. The values, rcmc, for the three systems were less than 30 mN·m(-1). Typical samples of bilayers used as foaming agents and emulsifiers were investigated for the foaming and emulsification assays. CO2 was introduced to change the solubility of stearic acid, inducing the transition of their surface activity and further achieving the goal of defoaming and demulsification.
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Fameau AL, Zemb T. Self-assembly of fatty acids in the presence of amines and cationic components. Adv Colloid Interface Sci 2014; 207:43-64. [PMID: 24345730 DOI: 10.1016/j.cis.2013.11.017] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2013] [Revised: 11/18/2013] [Accepted: 11/21/2013] [Indexed: 11/27/2022]
Abstract
Fatty acids can self-assemble under various shapes in the presence of amines or cationic components. We assemble and compare these types of self-assembly leading toward a catanionic system either with a cationic surfactant or with an amine component playing the role of counter-ion. First, we focus on the molar ratio as a key driving parameter. Known and yet un-known values from other quantities governing the colloidal properties of these systems such as structural surface charge, osmotic pressure, molecular segregation, rigidity, in plane colloidal interactions and melting transition are discussed. We include also recent results obtained on the interfacial and foaming properties of these systems. We will highlight the specificity of these self-assemblies leading to unusual macroscopic properties rich of robust applications.
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Huang D, Chen X, Li Z. Formation of pyrrolidinium fatty acid soap and its lyotropic liquid crystalline phase behavior. Colloids Surf A Physicochem Eng Asp 2013. [DOI: 10.1016/j.colsurfa.2013.02.065] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Curschellas C, Kohlbrecher J, Geue T, Fischer P, Schmitt B, Rouvet M, Windhab EJ, Limbach HJ. Foams stabilized by multilamellar polyglycerol ester self-assemblies. Langmuir 2013; 29:38-49. [PMID: 23214931 DOI: 10.1021/la3029116] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The importance of surfactant self-assemblies in foam stabilization is well-known. The aim of the current study was to investigate the self-assemblies of the nonionic surfactant polyglycerol ester (PGE) in bulk solutions, at the interface and within foams, using a combined approach of small-angle neutron scattering, neutron reflectivity, and electron microscopy. PGE bulk solutions contain vesicles as well as open lamellar structures. Upon heating of the solutions the lamellar spacing increases, with significant differences in the presence of NaCl or CaCl(2) as compared to the standard solution. The adsorption of the multilamellar structures present in the bulk solutions lead to a multilayered film at the air-water interface. The ordering within this film was increased as a result of a 20% area compression mimicking a coalescence event. Finally, PGE foams were shown to be stabilized not only by strong interfacial films but also by agglomerated self-assemblies within the interstitial areas of the foams.
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Affiliation(s)
- Corina Curschellas
- Laboratory of Food Process Engineering, ETH Zürich, Schmelzbergstrasse 9, 8092 Zürich, Switzerland.
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