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Gu S, Wang D. Electrostatic Interaction-Driven Fabrication of Large-Area, Freestanding Nanoparticle Surfactant Membranes with Controllable Elastic Properties. ACS APPLIED MATERIALS & INTERFACES 2024; 16:45778-45787. [PMID: 39140693 DOI: 10.1021/acsami.4c11820] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/15/2024]
Abstract
Nanoparticle surfactants assembled at water-oil interfaces can significantly lower the interfacial tension and can be used to stabilize liquids. Understanding and actively tuning the mechanical properties of the generated membranes, which comprise the nanoparticle surfactants, are of significant fundamental interest for the interfacial behavior of nanoparticles and of interest for water purification, drug encapsulation, enhanced oil recovery, and innovative energy transduction applications. Here, we present electrostatic interaction-driven fabrication of freestanding and close-packed SiO2 surfactant membranes with diameters up to 0.10 mm. The membranes of 20-30 nm in thickness were spanned over holes with a diameter of 2 μm, exhibiting a Young's modulus ranging from 1.5 to 5.9 GPa. The controllable elastic properties of the fabricated nanoparticle surfactant membranes are found to be dictated by the strength of interactions between nanoparticles and ligands, between ligands and ligands, and between the nanoparticle surfactants. The results present an efficient approach for fabricating and developing nanoparticle surfactant-based large-area, freestanding, and ultrathin membranes with finely tunable mechanical properties on a large scale.
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Affiliation(s)
- Sheng Gu
- State Key Laboratory of Organic-Inorganic Composites & Beijing Key Laboratory of Advanced Functional Polymer Composites, Beijing University of Chemical Technology, Beijing 100029, China
| | - Dong Wang
- State Key Laboratory of Organic-Inorganic Composites & Beijing Key Laboratory of Advanced Functional Polymer Composites, Beijing University of Chemical Technology, Beijing 100029, China
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2
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Tomasella P, Lucifora G, Ruffino R, Pandino I, Trusso Sfrazzetto G, Tuccitto N, Li-Destri G. Role of Density and Conformational Composition in the Surface-to-Bulk Molecular Dosing of Photosensitive Surfactant Monolayers. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:17517-17525. [PMID: 39119985 DOI: 10.1021/acs.langmuir.4c01699] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/10/2024]
Abstract
Poorly water-soluble photosensitive monolayers might enable very precise control of the rate and number of desorbing molecules by controlling both the monolayer density and conformational composition. In this perspective, we systematically characterized the interfacial behavior of Langmuir monolayers consisting of a poorly water-soluble azobenzene-containing surfactant as a function of its trans/cis ratio. Precise control of the conformational ratio was achieved by controlling the UV irradiation time, allowing researchers to investigate compositions spanning from 100% trans to 90% cis. Our results demonstrate that in 100% trans monolayers, molecules do not desorb with compression until a threshold area is reached. Instead, the number of molecules desorbing in mixed trans-cis monolayers can be modulated by controlling both the composition and the compression rate. Additionally, the desorption rate at constant density is also strongly composition-dependent, and it accounts for two different regimes with two different characteristic times. We will show that trans molecules mostly desorb according to the slow regime while cis molecules conform to the fast one, but the two conformers mutually influence each other.
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Affiliation(s)
- Pascal Tomasella
- Laboratory for Molecular Surfaces and Nanotechnology (LAMSUN) and CSGI, Department of Chemical Sciences, University of Catania, 95125 Catania, Italy
| | - Giovanni Lucifora
- Department of Chemical Sciences, University of Catania, 95125 Catania, Italy
| | - Roberta Ruffino
- Laboratory for Molecular Surfaces and Nanotechnology (LAMSUN) and CSGI, Department of Chemical Sciences, University of Catania, 95125 Catania, Italy
| | - Irene Pandino
- Department of Chemical Sciences, University of Catania, 95125 Catania, Italy
| | | | - Nunzio Tuccitto
- Laboratory for Molecular Surfaces and Nanotechnology (LAMSUN) and CSGI, Department of Chemical Sciences, University of Catania, 95125 Catania, Italy
| | - Giovanni Li-Destri
- Laboratory for Molecular Surfaces and Nanotechnology (LAMSUN) and CSGI, Department of Chemical Sciences, University of Catania, 95125 Catania, Italy
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3
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Wang S, Lin B, Zeng Y, Pan M. Effects of Ferric Ions on Cellulose Nanocrystalline-Based Chiral Nematic Film and Its Applications. Polymers (Basel) 2024; 16:399. [PMID: 38337291 DOI: 10.3390/polym16030399] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2024] [Revised: 01/27/2024] [Accepted: 01/29/2024] [Indexed: 02/12/2024] Open
Abstract
Chiral nematic materials have been attracting attention in fields of advanced functional applications due to their unique iridescent colors and tunable helical structure. A precisely decreased pitch is of importance for construction and applications of chiral nematic materials; however, it remains a huge challenge. Herein, cellulose nanocrystal (CNC) is selected as a constructed matrix for chiral nematic films, and ferric chloride (FeCl3) is used as a modification agent. We investigate the effects of the ferric ion loads on the helical structure and optical characteristics of iridescent film. Subsequently, the influence of ferric ions on the assembly process of CNC liquid crystal and the regulation of the structure color of self-assembled monolayers are discussed. Therefore, the CNC/FeCl3 chiral nematic films showed a blueshifted structural color from orange to blue, which highlights a simple route to achieve the regulation of decreased pitch. Further, we have applied this CNC/FeCl3 chiral nematic film for benzene gas detection. The sensing performance shows that the CNC/FeCl3 chiral nematic film reacts to benzene gas, which can be merged into the nematic layer of the CNC and trigger the iron ions chelated on the CNC, consequently arousing the redshift of the reflected wavelength and the effective colorimetric transition. This CNC/FeCl3 chiral nematic film is anticipated to boost a new gas sensing mechanism for faster and more effective in-situ qualitative investigations.
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Affiliation(s)
- Shuaiqi Wang
- College of Materials Science and Engineering, Utilization of Forest Resources, Nanjing Forestry University, Nanjing 210037, China
| | - Bingqun Lin
- College of Materials Science and Engineering, Utilization of Forest Resources, Nanjing Forestry University, Nanjing 210037, China
| | - Yihan Zeng
- College of Materials Science and Engineering, Utilization of Forest Resources, Nanjing Forestry University, Nanjing 210037, China
| | - Mingzhu Pan
- College of Materials Science and Engineering, Utilization of Forest Resources, Nanjing Forestry University, Nanjing 210037, China
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4
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Fournier R, Caye Díaz M, Cranston ED, Frostad JM. Apparent Failures in Interpretation of Interfacial Characterization When Formulating Emulsions Stabilized by Cellulose Nanocrystals. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:13921-13931. [PMID: 37737569 DOI: 10.1021/acs.langmuir.3c01465] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/23/2023]
Abstract
Cellulose nanocrystals (CNCs) are sustainable particles that are effective at stabilizing emulsions by adsorbing at droplet interfaces and providing a steric barrier to coalescence. However, CNCs have surface charges that reduce the coverage of the emulsion droplets due to the electrostatic repulsion between CNCs. In such cases, adding salt is a typical (and straightforward) way to adjust the formulation so that the charges are screened, allowing increased coverage of the droplets. At the outset of this work, we hypothesized that characterization of the interfacial tension and interfacial shear rheology of the oil-water interface would be correlated to interfacial coverage and therefore predictive of the optimal salt concentration for emulsion stability. Included in the methods section as a useful reference to others is the presentation of a detailed derivation for the equations needed to compute interfacial shear moduli in a custom, double-gap geometry. In contrast to our hypothesis, we found that interfacial tension did not correlate well with emulsion stability and that the native surface-active compounds in corn oil overwhelmed any influence of the CNCs on the interfacial tension. Additionally, we found that interfacial shear rheology (which can be painstakingly difficult to measure) was not a useful tool for formulating these emulsions. This is because at commonly used concentrations of CNCs, the bulk rheology is increased to a much greater degree than that of the interface, making the details of the interfacial rheology unimportant. Finally, we found that at concentrations of CNCs that are typical in industrial processes, characterizing the bulk viscoelastic properties of the aqueous suspending phase without added oil (a relatively simple measurement) is sufficient to predict the influence of NaCl concentration on charge screening between the CNCs and, by extension, increased surface coverage of droplets for greater emulsion stability.
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Affiliation(s)
- Roxanne Fournier
- Food Science, University of British Columbia, 2205 East Mall, Vancouver V6T-1Z4, Canada
| | - Maximiliano Caye Díaz
- Chemical and Biological Engineering, University of British Columbia, 2360 East Mall, Vancouver V6T-1Z3, Canada
| | - Emily D Cranston
- Chemical and Biological Engineering, University of British Columbia, 2360 East Mall, Vancouver V6T-1Z3, Canada
- Wood Science, University of British Columbia, 2424 Main Mall, Vancouver V6T-1Z4, Canada
- Bioproducts Institute, University of British Columbia, 2385 Agronomy Road, Vancouver V6T-1Z4, Canada
| | - John M Frostad
- Food Science, University of British Columbia, 2205 East Mall, Vancouver V6T-1Z4, Canada
- Chemical and Biological Engineering, University of British Columbia, 2360 East Mall, Vancouver V6T-1Z3, Canada
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5
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Xie G, Zhu S, Kim PY, Jiang S, Yi Q, Li P, Chu Z, Helms BA, Russell TP. Relaxing Wrinkles in Jammed Interfacial Assemblies. Angew Chem Int Ed Engl 2023; 62:e202307713. [PMID: 37452006 DOI: 10.1002/anie.202307713] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Revised: 07/13/2023] [Accepted: 07/14/2023] [Indexed: 07/18/2023]
Abstract
Dynamic covalent bonding has emerged as a mean by which stresses in a network can be relaxed. Here, the strength of the bonding of ligands to nanoparticles at the interface between two immiscible liquids affect the same results in jammed assemblies of nanoparticle surfactants. Beyond a critical degree of overcrowding induced by the compression of jammed interfacial assemblies, the bonding of ligands to nanoparticles (NPs) can be broken, resulting in a desorption of the NPs from the interface. This reduces the areal density of nanoparticle surfactants at the interface, allowing the assemblies to relax, not to a fluid state but rather another jammed state. The relaxation of the wrinkles caused by the compression reflects the tendency of these assemblies to eliminate areas of high curvature, favoring a more planar geometry. This enabled the generation of giant vesicular and multivesicular structures from these assemblies.
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Affiliation(s)
- Ganhua Xie
- State Key Laboratory for Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, China
- Materials Sciences Division, Lawrence Berkeley National Laboratory, One Cyclotron Road, Berkeley, CA 94720, USA
| | - Shipei Zhu
- Materials Sciences Division, Lawrence Berkeley National Laboratory, One Cyclotron Road, Berkeley, CA 94720, USA
| | - Paul Y Kim
- Materials Sciences Division, Lawrence Berkeley National Laboratory, One Cyclotron Road, Berkeley, CA 94720, USA
| | - Shubao Jiang
- State Key Laboratory for Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, China
| | - Qinpiao Yi
- State Key Laboratory for Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, China
| | - Pei Li
- Analytical Instrumentation Center, Hunan University, Changsha, 410082, China
| | - Zonglin Chu
- State Key Laboratory for Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, China
| | - Brett A Helms
- Materials Sciences Division, Lawrence Berkeley National Laboratory, One Cyclotron Road, Berkeley, CA 94720, USA
- The Molecular Foundry, Lawrence Berkeley National Laboratory, One Cyclotron Road, Berkeley, CA 94720, USA
| | - Thomas P Russell
- Materials Sciences Division, Lawrence Berkeley National Laboratory, One Cyclotron Road, Berkeley, CA 94720, USA
- Polymer Science and Engineering Department, University of Massachusetts, Amherst, MA 01003, USA
- Advanced Institute for Materials Research (AIMR), Tohoku University, 2-1-1 Katahira, Aoba, Sendai, 980-8577, Japan
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6
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Mendez-Ortiz W, Stebe KJ, Lee D. Ionic Strength-Dependent Assembly of Polyelectrolyte-Nanoparticle Membranes via Interfacial Complexation at a Water-Water Interface. ACS NANO 2022; 16:21087-21097. [PMID: 36449948 DOI: 10.1021/acsnano.2c08916] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Complexation between oppositely charged nanoparticles (NPs) and polyelectrolytes (PEs) is a scalable approach to assemble functional, stimuli-responsive membranes. Complexation at interfaces of aqueous two-phase systems (ATPSs) has emerged as a powerful method to assemble these functional structures. Membranes formed at these interfaces can grow continuously to thicknesses approaching several millimeters and display a high degree of tunability via modification of solution properties such as ionic strength. To identify the membrane assembly mechanism, we study interfacial assembly in a prototypical dextran/PEG ATPS, in which silica (SiO2) NPs suspended in the PEG phase undergo interfacial complexation with poly(diallyldimethylammonium chloride) (PDADMAC) supplied in the dextran phase. Using a microfluidic device that facilitates sequential insertion of fluorescent and nonfluorescent PDADMAC, we observe a transition in the membrane growth mechanism with ionic strength. In the absence of added salt ([NaCl] = 0 mM) PDADMAC chains permeate through the existing membrane to complex with NPs on the PEG side of the membrane, leading to the formation of well-stratified structures. At elevated ionic strength ([NaCl] = 500 mM), this permeation mechanism is lost. Rather, the complexing species incorporate uniformly across the membrane. We attribute this transition to a rapid exchange of PE-counterion, NP-counterion, and PE/NP binding sites facilitated by an increase in extrinsically compensated charged groups on the NPs and PEs at high salinity. These PDADMAC/SiO2 NP membranes have tremendous potential for the formation of functional membranes, offering control over the internal structure and serving as an ideal system for the generation of targeted release systems.
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Affiliation(s)
- Wilfredo Mendez-Ortiz
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Kathleen J Stebe
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Daeyeon Lee
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
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7
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Yuan Q, Gu S, Chi Y, Zhao L, Wang D. Langmuir-Blodgett Deposition of Cellulose Nanocrystal Surfactants into Ordered Monolayers. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:8495-8501. [PMID: 35776942 DOI: 10.1021/acs.langmuir.1c03440] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The cellulose nanocrystals (CNCs) are shown to interact with amine-functionalized polyhedral oligomeric silsesquioxane (POSS-NH2) strongly at the water/oil interface, forming the CNC-POSS assemblies, that is, CNC surfactants that decrease the interfacial tension of the water/chloroform greatly. When bringing the CNC aqueous solution and POSS chloroform solution into a Langmuir trough, they form a monolayer of the CNC surfactants. Upon applying a continuous compression, a distinct transition appears in the surface pressure-area curves, and during this transition, the packing of the CNC surfactants in the produced monolayers transits from network-like patterns to ordered alignment.
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Affiliation(s)
- Qingqing Yuan
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China
| | - Sheng Gu
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China
| | - Yongjie Chi
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
| | - Lingyun Zhao
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
| | - Dong Wang
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China
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8
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Hu X, Ma T, Lu S, Song Y. Studies into interactions and interfacial characteristics between cellulose nanocrystals and bovine serum albumin. Food Chem X 2022; 13:100194. [PMID: 35499035 PMCID: PMC9039884 DOI: 10.1016/j.fochx.2021.100194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Revised: 12/20/2021] [Accepted: 12/21/2021] [Indexed: 11/17/2022] Open
Abstract
This study investigates the interactions between cellulose nanocrystals (CNCs) and bovine serum albumin (BSA) under different pH conditions. A multiscale technique was employed to characterize the CNCs and BSA at pH 7 and pH 3. ζ-Potential measurement and UV-vis spectroscopy demonstrated strong interactions between CNCs and BSA at pH 3, whereat they have opposite charges. Interfacial tensiometry showed a deficiency in the surface activity of the CNCs and indicated that BSA dominated the interface behavior in their complex. Quartz crystal microbalance with dissipation revealed that the sequential adsorption of BSA and CNCs produced viscoelastic bilayers at pH 3, and the mass adsorbed was ∼ 28 times that adsorbed at pH 7. Molecular dynamics simulations indicated that the key interactions between the two materials were produced between the hydrophobic CNC surface and the BSA domain IIA region. These results provide interesting insights into the design of complex food emulsions and fluid interfaces.
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Affiliation(s)
- Xinna Hu
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China
- National Engineering Research Center for Fruits and Vegetable Processing, Beijing 100193, China
- Key Laboratory of Fruits and Vegetable Processing, Ministry of Agriculture and Rural Affairs, Beijing 100083, China
| | - Tao Ma
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China
- National Engineering Research Center for Fruits and Vegetable Processing, Beijing 100193, China
- Key Laboratory of Fruits and Vegetable Processing, Ministry of Agriculture and Rural Affairs, Beijing 100083, China
| | - Shuyu Lu
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China
- National Engineering Research Center for Fruits and Vegetable Processing, Beijing 100193, China
- Key Laboratory of Fruits and Vegetable Processing, Ministry of Agriculture and Rural Affairs, Beijing 100083, China
| | - Yi Song
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China
- National Engineering Research Center for Fruits and Vegetable Processing, Beijing 100193, China
- Key Laboratory of Fruits and Vegetable Processing, Ministry of Agriculture and Rural Affairs, Beijing 100083, China
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9
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Zhang Z, Sèbe G, Hou Y, Wang J, Huang J, Zhou G. Grafting polymers from cellulose nanocrystals via surface‐initiated atom transfer radical polymerization. J Appl Polym Sci 2021. [DOI: 10.1002/app.51458] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Zhen Zhang
- SCNU‐TUE Joint Lab of Device Integrated Responsive Materials (DIRM), National Center for International Research on Green Optoelectronics South China Normal University Guangzhou China
- Guangdong Provincial Key Laboratory of Optical Information Materials and Technology, Institute of Electronic Paper Displays, South China Academy of Advanced Optoelectronics South China Normal University Guangzhou China
| | - Gilles Sèbe
- Laboratoire de Chimie des Polymères Organiques University of Bordeaux, CNRS, Bordeaux INP Pessac France
| | - Yelin Hou
- Laboratoire de Chimie des Polymères Organiques University of Bordeaux, CNRS, Bordeaux INP Pessac France
| | | | - Jin Huang
- School of Chemistry and Chemical Engineering, Chongqing Key Laboratory of Soft‐Matter Material Chemistry and Function Manufacturing, and “the Belt and Road” International Joint Research Laboratory of Sustainable Materials Southwest University Chongqing China
- School of Chemistry and Chemical Engineering, and Engineering Research Center of Materials‐Oriented Chemical Engineering of Xinjiang Bintuan Shihezi University Shihezi China
| | - Guofu Zhou
- SCNU‐TUE Joint Lab of Device Integrated Responsive Materials (DIRM), National Center for International Research on Green Optoelectronics South China Normal University Guangzhou China
- Guangdong Provincial Key Laboratory of Optical Information Materials and Technology, Institute of Electronic Paper Displays, South China Academy of Advanced Optoelectronics South China Normal University Guangzhou China
- Shenzhen Guohua Optoelectronics Tech. Co. Ltd. Shenzhen China
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10
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Forth J, Mariano A, Chai Y, Toor A, Hasnain J, Jiang Y, Feng W, Liu X, Geissler PL, Menon N, Helms BA, Ashby PD, Russell TP. The Buckling Spectra of Nanoparticle Surfactant Assemblies. NANO LETTERS 2021; 21:7116-7122. [PMID: 34448588 DOI: 10.1021/acs.nanolett.1c01454] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Fine control over the mechanical properties of thin sheets underpins transcytosis, cell shape, and morphogenesis. Applying these principles to artificial, liquid-based systems has led to reconfigurable materials for soft robotics, actuation, and chemical synthesis. However, progress is limited by a lack of synthetic two-dimensional membranes that exhibit tunable mechanical properties over a comparable range to that seen in nature. Here, we show that the bending modulus, B, of thin assemblies of nanoparticle surfactants (NPSs) at the oil-water interface can be varied continuously from sub-kBT to 106kBT, by varying the ligands and particles that comprise the NPS. We find extensive departure from continuum behavior, including enormous mechanical anisotropy and a power law relation between B and the buckling spectrum width. Our findings provide a platform for shape-changing liquid devices and motivate new theories for the description of thin-film wrinkling.
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Affiliation(s)
- Joe Forth
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
- Department of Chemistry, University College London, London, WC1H 0AJ, United Kingdom
| | - Andres Mariano
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
- Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - Yu Chai
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
- Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
- Department of Physics, City University of Hong Kong, Hong Kong SAR, China
| | - Anju Toor
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
- School of Materials Science and Engineering, University of California, Berkeley, California 94720, United States
| | - Jaffar Hasnain
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
- Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - Yufeng Jiang
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
- School of Materials Science and Engineering, University of California, Berkeley, California 94720, United States
| | - Wenqian Feng
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Xubo Liu
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Phillip L Geissler
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
- Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - Narayanan Menon
- Department of Physics, University of Massachusetts, Amherst, Massachusetts 01003, United States
| | - Brett A Helms
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
- Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Paul D Ashby
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
- Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Thomas P Russell
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
- Polymer Science and Engineering Department, University of Massachusetts, 120 Governors Drive, Conte Center for Polymer Research, Amherst, Massachusetts 01003, United States
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
- Advanced Institute for Materials Research (WPI-AIMR), Tohoku University, 2-1-1 Katahira, Aoba, Sendai 980-8577, Japan
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11
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Dynamic emulsion droplets enabled by interfacial assembly of azobenzene-functionalized nanoparticles under light and magnetic field. J Colloid Interface Sci 2021; 583:586-593. [PMID: 33038608 DOI: 10.1016/j.jcis.2020.09.058] [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: 07/27/2020] [Revised: 09/15/2020] [Accepted: 09/16/2020] [Indexed: 11/22/2022]
Abstract
HYPOTHESIS The ability to control the assembly of micro/nanosized particles at liquid-liquid interface with external inputs promises new opportunities in nanofabrication and biomedicines. This work aims to demonstrate a way to control of dynamic assembly of nanoparticles at liquid-liquid interface by light and magnetic field, which consequently enables the formation of dynamic emulsion droplets. EXPERIMENTS Magnetic Fe3O4 nanoparticles functionalized with azobenzene moieties (Fe3O4@AZO) were synthesized and were dispersed in toluene/(N,N-dimethylformamide, DMF) binary solvent. After irradiation with UV or visible light, the assembly behavior of these Fe3O4 nanoparticles were evaluated by electron microscopy and fluorescent microscopy. FINDINGS Under UV light, Fe3O4@AZO nanoparticles were self-assembled due to the increase of dipolar interaction from the photoisomerization of azobenzene and polar molecules, DMF, were harvested from a binary solvent of DMF/toluene. While under visible light, a relief of dipolar interactions between Fe3O4@AZO nanoparticles can induce the secondary assembly of these Fe3O4@AZO nanoparticles at DMF-toluene interface, resulting in DMF droplets covered by a layer of nanoparticle superlattices. More importantly, coupled with a magnetic field, these emulsion droplets can be shaped into one dimensional ones during the interfacial assembly process, thereby giving rise to dynamic emulsions controlled by light and magnetic field.
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12
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Lin D, Liu T, Yuan Q, Yang H, Ma H, Shi S, Wang D, Russell TP. Stabilizing Aqueous Three-Dimensional Printed Constructs Using Chitosan-Cellulose Nanocrystal Assemblies. ACS APPLIED MATERIALS & INTERFACES 2020; 12:55426-55433. [PMID: 33228355 DOI: 10.1021/acsami.0c16602] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The assembly and binding of nanoparticles at the interfaces of aqueous two-phase systems enable the three-dimensional (3D) printing of all-aqueous naturally occurring materials. When a dispersion of cellulose nanocrystals (CNCs) in an aqueous solution of polyethylene glycol (PEG) is brought into contact with chitosan dissolved in an aqueous solution of dextran, the CNCs and chitosan diffuse to the interface between the two immiscible aqueous solutions, electrostatically interact, and form a solid, membranous layer sufficiently rapidly to 3D print tubules of one liquid in the other. The diameter, length, spatial arrangement, and stability of the printed tubules can be broadly controlled. Adsorption and directional diffusion of ionic species across the membranous layer make heavy metal ion removal possible. The results present a platform for fabricating and developing all-aqueous compartmentalized systems where function can be independently coupled to the inherent functionality of the nanoparticles or ligands.
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Affiliation(s)
- Dandan Lin
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering & State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China
| | - Tan Liu
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering & State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China
| | - Qingqing Yuan
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering & State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China
| | - Hongkun Yang
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering & State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China
| | - Hongyang Ma
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering & State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China
| | - Shaowei Shi
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering & State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China
| | - Dong Wang
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering & State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China
| | - Thomas P Russell
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering & State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China
- Polymer Science and Engineering Department, University of Massachusetts Amherst, Amherst, Massachusetts 01003, United States
- Materials Sciences Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, California 94720, United States
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13
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Chai Y, Hasnain J, Bahl K, Wong M, Li D, Geissler P, Kim PY, Jiang Y, Gu P, Li S, Lei D, Helms BA, Russell TP, Ashby PD. Direct observation of nanoparticle-surfactant assembly and jamming at the water-oil interface. SCIENCE ADVANCES 2020; 6:eabb8675. [PMID: 33239289 PMCID: PMC7688340 DOI: 10.1126/sciadv.abb8675] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Accepted: 10/16/2020] [Indexed: 05/14/2023]
Abstract
Electrostatic interactions between nanoparticles (NPs) and functionalized ligands lead to the formation of NP surfactants (NPSs) that assemble at the water-oil interface and form jammed structures. To understand the interfacial behavior of NPSs, it is necessary to understand the mechanism by which the NPSs attach to the interface and how this attachment depends on the areal coverage of the interface. Through direct observation with high spatial and temporal resolution, using laser scanning confocal microscopy and in situ atomic force microscopy (AFM), we observe that early-stage attachment of NPs to the interface is diffusion limited and with increasing areal density of the NPSs, further attachment requires cooperative displacement of the previously assembled NPSs both laterally and vertically. The unprecedented detail provided by in situ AFM reveals the complex mechanism of attachment and the deeply nonequilibrium nature of the assembly.
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Affiliation(s)
- Yu Chai
- The Molecular Foundry, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USA
- Department of Physics, The City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong, China
| | - Jaffar Hasnain
- Department of Chemistry, University of California, Berkeley, Berkeley, CA 94720, USA
| | - Kushaan Bahl
- Department of Chemical and Biomolecular Engineering, University of California, Berkeley, CA 94720, USA
| | - Matthew Wong
- Department of Chemistry, University of California, Berkeley, Berkeley, CA 94720, USA
| | - Dong Li
- The Molecular Foundry, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USA
| | - Phillip Geissler
- Department of Chemistry, University of California, Berkeley, Berkeley, CA 94720, USA
- Materials Sciences Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USA
| | - Paul Y Kim
- Materials Sciences Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USA
| | - Yufeng Jiang
- Materials Sciences Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USA
- Department of Applied Science and Technology, University of California, Berkeley, Berkeley, CA 94720, USA
| | - Peiyang Gu
- Materials Sciences Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USA
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation, Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, China
| | - Siqi Li
- Department of Applied Physics, The Hong Kong Polytechnic University, Hung Hom, SAR, Hong Kong, China
| | - Dangyuan Lei
- Department of Materials Science and Engineering, The City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, SAR, Hong Kong, China
| | - Brett A Helms
- The Molecular Foundry, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USA
- Materials Sciences Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USA
| | - Thomas P Russell
- Materials Sciences Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USA.
- Polymer Science and Engineering Department, Conte Center for Polymer Research, University of Massachusetts, 120 Governors Drive, Amherst, MA 01003, USA
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
- Advanced Institute for Materials Research (WPI-AIMR), Tohoku University, 2-1-1 Katahira, Aoba, Sendai 980-8577, Japan
| | - Paul D Ashby
- The Molecular Foundry, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USA.
- Materials Sciences Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USA
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14
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Bertsch P, Fischer P. Adsorption and interfacial structure of nanocelluloses at fluid interfaces. Adv Colloid Interface Sci 2020; 276:102089. [PMID: 31887576 DOI: 10.1016/j.cis.2019.102089] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2019] [Revised: 12/17/2019] [Accepted: 12/18/2019] [Indexed: 01/12/2023]
Abstract
Nanocelluloses (NCs), more specifically cellulose nanocrystals and nanofibrils, are a green alternative for the stabilization of fluid interfaces. The adsorption of NCs at oil-water interfaces facilitates the formation of stable and biocompatible Pickering emulsions. In contrast, unmodified NCs are not able to stabilize foams. As a consequence, NCs are often hydrophobized by covalent modifications or adsorption of surfactants, allowing also the stabilization of foams or functional inverse, double, and stimuli-responsive emulsions. Although the interfacial stabilization by NCs is readily exploited, the driving force of adsorption and stabilization mechanisms remained long unclear. Here, we summarize the recent advances in the understanding of NC adsorption regarding kinetics, isotherms, and energetic aspects, as well as their interfacial structure, surface coverage, and contact angle. We thereby distinguish unmodified NCs, covalently modified NCs, and surfactant enhanced adsorption.
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15
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Calabrese V, da Silva MA, Schmitt J, Hossain KMZ, Scott JL, Edler KJ. Charge-driven interfacial gelation of cellulose nanofibrils across the water/oil interface. SOFT MATTER 2020; 16:357-365. [PMID: 31720672 DOI: 10.1039/c9sm01551e] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Interfacial gels, obtained by the interaction of water-dispersible oxidised cellulose nanofibrils (OCNF) and oil-soluble oleylamine (OA), were produced across water/oil (W/O) interfaces. Surface rheology experiments showed that the complexation relies on the charge coupling between the negatively-charged OCNF and OA. Complexation across the W/O interface was found to be dependent on the ζ-potential of the OCNF (modulated by electrolyte addition), leading to different interfacial properties. Spontaneous OCNF adsorption at the W/O interface occurred for particles with ζ-potential more negative than -30 mV, resulting in the formation of interfacial gels; whilst for particles with ζ-potential of ca. -30 mV, spontaneous adsorption occurred, coupled with augmented interfibrillar interactions, yielding stronger and tougher interfacial gels. On the contrary, charge neutralisation of OCNF (ζ-potential values more positive than -30 mV) did not allow spontaneous adsorption of OCNF at the W/O interface. In the case of favourable OCNF adsorption, the interfacial gel was found to embed oil-rich droplets - a spontaneous emulsification process.
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Affiliation(s)
- Vincenzo Calabrese
- Department of Chemistry, University of Bath, Claverton Down, Bath, BA2 7AY, UK.
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16
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Gu P, Chai Y, Hou H, Xie G, Jiang Y, Xu Q, Liu F, Ashby PD, Lu J, Russell TP. Stabilizing Liquids Using Interfacial Supramolecular Polymerization. Angew Chem Int Ed Engl 2019; 58:12112-12116. [PMID: 31353804 DOI: 10.1002/anie.201906339] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2019] [Revised: 06/20/2019] [Indexed: 11/06/2022]
Affiliation(s)
- Pei‐Yang Gu
- College of Chemistry, Chemical Engineering and Materials ScienceCollaborative InnovationCenter of Suzhou Nano Science and TechnologySoochow University Suzhou 215123 China
- Materials Sciences DivisionLawrence Berkeley National Laboratory 1 Cyclotron Road Berkeley CA 94720 USA
| | - Yu Chai
- Materials Sciences DivisionLawrence Berkeley National Laboratory 1 Cyclotron Road Berkeley CA 94720 USA
- Molecular FoundryLawrence Berkeley National Laboratory 1 Cyclotron Road Berkeley CA 94720 USA
| | - Honghao Hou
- Materials Sciences DivisionLawrence Berkeley National Laboratory 1 Cyclotron Road Berkeley CA 94720 USA
| | - Ganhua Xie
- Materials Sciences DivisionLawrence Berkeley National Laboratory 1 Cyclotron Road Berkeley CA 94720 USA
| | - Yufeng Jiang
- Materials Sciences DivisionLawrence Berkeley National Laboratory 1 Cyclotron Road Berkeley CA 94720 USA
| | - Qing‐Feng Xu
- College of Chemistry, Chemical Engineering and Materials ScienceCollaborative InnovationCenter of Suzhou Nano Science and TechnologySoochow University Suzhou 215123 China
| | - Feng Liu
- Department of Physics and AstronomyCollaborative Innovation Center of IFSA (CICIFSA)Shanghai Jiaotong University Shanghai 200240 P. R. China
| | - Paul D. Ashby
- Molecular FoundryLawrence Berkeley National Laboratory 1 Cyclotron Road Berkeley CA 94720 USA
| | - Jian‐Mei Lu
- College of Chemistry, Chemical Engineering and Materials ScienceCollaborative InnovationCenter of Suzhou Nano Science and TechnologySoochow University Suzhou 215123 China
| | - Thomas P. Russell
- Materials Sciences DivisionLawrence Berkeley National Laboratory 1 Cyclotron Road Berkeley CA 94720 USA
- Polymer Science and Engineering DepartmentUniversity of Massachusetts Amherst MA 01003 USA
- Beijing Advanced Innovation Center for Soft Matter Science and EngineeringBeijing University of Chemical Technology Beijing 100029 China
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17
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Gu P, Chai Y, Hou H, Xie G, Jiang Y, Xu Q, Liu F, Ashby PD, Lu J, Russell TP. Stabilizing Liquids Using Interfacial Supramolecular Polymerization. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201906339] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Pei‐Yang Gu
- College of Chemistry, Chemical Engineering and Materials ScienceCollaborative InnovationCenter of Suzhou Nano Science and TechnologySoochow University Suzhou 215123 China
- Materials Sciences DivisionLawrence Berkeley National Laboratory 1 Cyclotron Road Berkeley CA 94720 USA
| | - Yu Chai
- Materials Sciences DivisionLawrence Berkeley National Laboratory 1 Cyclotron Road Berkeley CA 94720 USA
- Molecular FoundryLawrence Berkeley National Laboratory 1 Cyclotron Road Berkeley CA 94720 USA
| | - Honghao Hou
- Materials Sciences DivisionLawrence Berkeley National Laboratory 1 Cyclotron Road Berkeley CA 94720 USA
| | - Ganhua Xie
- Materials Sciences DivisionLawrence Berkeley National Laboratory 1 Cyclotron Road Berkeley CA 94720 USA
| | - Yufeng Jiang
- Materials Sciences DivisionLawrence Berkeley National Laboratory 1 Cyclotron Road Berkeley CA 94720 USA
| | - Qing‐Feng Xu
- College of Chemistry, Chemical Engineering and Materials ScienceCollaborative InnovationCenter of Suzhou Nano Science and TechnologySoochow University Suzhou 215123 China
| | - Feng Liu
- Department of Physics and AstronomyCollaborative Innovation Center of IFSA (CICIFSA)Shanghai Jiaotong University Shanghai 200240 P. R. China
| | - Paul D. Ashby
- Molecular FoundryLawrence Berkeley National Laboratory 1 Cyclotron Road Berkeley CA 94720 USA
| | - Jian‐Mei Lu
- College of Chemistry, Chemical Engineering and Materials ScienceCollaborative InnovationCenter of Suzhou Nano Science and TechnologySoochow University Suzhou 215123 China
| | - Thomas P. Russell
- Materials Sciences DivisionLawrence Berkeley National Laboratory 1 Cyclotron Road Berkeley CA 94720 USA
- Polymer Science and Engineering DepartmentUniversity of Massachusetts Amherst MA 01003 USA
- Beijing Advanced Innovation Center for Soft Matter Science and EngineeringBeijing University of Chemical Technology Beijing 100029 China
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18
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Borówko M, Sokołowski S, Staszewski T. Amphiphilic Dimers at Liquid-Liquid Interfaces: A Density Functional Approach. J Phys Chem B 2019; 123:5962-5972. [PMID: 31204480 DOI: 10.1021/acs.jpcb.9b04501] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
We apply density functional theory to study the structure of dimers at the interface between two partially miscible symmetric liquids. The dimers are built of two tangentially jointed spheres and do not solve the coexisting liquids. The interactions in the system are modeled using Lennard-Jones potentials with different interactions between segments of the dimers and the liquid components. We study how asymmetry of the interactions between dimers and molecules of the liquid, i.e., the degree of dimer amphiphilicity, influences the interfacial structure. Two unexpected phenomena have been found. First, for some systems, the liquid-liquid interface is able to accommodate only a finite amount of dimers. If the amount of added dimers is larger than a threshold value, a part or all of the dimers move to the interior one of the coexisting phase, forming an insoluble sheet inside it, or the initial interface splits into separate parts. The second is a peculiar behavior of the dependence of the interfacial width with an increase of the amount of added dimers. In this case, we observe a discontinuous jump that is connected with reorientation of dimers with respect to the interface.
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Affiliation(s)
- M Borówko
- Department for the Modelling of Physico-Chemical Processes , Maria Curie-Skłodowska University , 20031 Lublin , Poland
| | - S Sokołowski
- Department for the Modelling of Physico-Chemical Processes , Maria Curie-Skłodowska University , 20031 Lublin , Poland
| | - T Staszewski
- Department for the Modelling of Physico-Chemical Processes , Maria Curie-Skłodowska University , 20031 Lublin , Poland
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