51
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Bergfreund J, Sun Q, Fischer P, Bertsch P. Adsorption of charged anisotropic nanoparticles at oil-water interfaces. NANOSCALE ADVANCES 2019; 1:4308-4312. [PMID: 36134395 PMCID: PMC9419606 DOI: 10.1039/c9na00506d] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2019] [Accepted: 10/05/2019] [Indexed: 05/04/2023]
Abstract
The adsorption of nanoparticles at fluid interfaces is of profound importance in the field of nanotechnology. Recent developments aim at pushing the boundaries beyond spherical model particles towards more complex shapes and surface chemistries, with particular interest in particles of biological origin. Here, we report on the adsorption of charged, shape-anisotropic cellulose nanocrystals (CNCs) for a wide range of oils with varying chemical structure and polarity. CNC adsorption was found to be independent of the chain length of aliphatic n-alkanes, but strongly dependent on oil polarity. Surface pressures decreased for more polar oils due to lower particle adsorption energies. Nanoparticles were increasingly wetted by polar oils, and interparticle Coulomb interactions across the oil phase thus increase in importance. No surface pressure was measurable and the O/W emulsification capacity ceased for the most polar octanol, suggesting limited CNC adsorption. Further, salt-induced charge screening enhanced CNC adsorption and surface coverage due to lower interparticle and particle-interface electrostatic repulsion. An empiric power law is presented which predicts the induced surface pressure of charged nanoparticles based on the specific oil-water interface tension.
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Affiliation(s)
- Jotam Bergfreund
- Institute of Food Nutrition and Health, ETH Zurich 8092 Zurich Switzerland +41 44 632 85 36
| | - Qiyao Sun
- Institute of Food Nutrition and Health, ETH Zurich 8092 Zurich Switzerland +41 44 632 85 36
| | - Peter Fischer
- Institute of Food Nutrition and Health, ETH Zurich 8092 Zurich Switzerland +41 44 632 85 36
| | - Pascal Bertsch
- Institute of Food Nutrition and Health, ETH Zurich 8092 Zurich Switzerland +41 44 632 85 36
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52
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Toor A, Forth J, Bochner de Araujo S, Merola MC, Jiang Y, Liu X, Chai Y, Hou H, Ashby PD, Fuller GG, Russell TP. Mechanical Properties of Solidifying Assemblies of Nanoparticle Surfactants at the Oil-Water Interface. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:13340-13350. [PMID: 31536356 DOI: 10.1021/acs.langmuir.9b01575] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The effect of polymer surfactant structure and concentration on the self-assembly, mechanical properties, and solidification of nanoparticle surfactants (NPSs) at the oil-water interface was studied. The surface tension of the oil-water interface was found to depend strongly on the choice of the polymer surfactant used to assemble the NPSs, with polymer surfactants bearing multiple polar groups being the most effective at reducing interfacial tension and driving the NPS assembly. By contrast, only small variations in the shear modulus of the system were observed, suggesting that it is determined largely by particle density. In the presence of polymer surfactants bearing multiple functional groups, NPS assemblies on pendant drop surfaces were observed to spontaneously solidify above a critical polymer surfactant concentration. Interfacial solidification accelerated rapidly as polymer surfactant concentration was increased. On long timescales after solidification, pendant drop interfaces were observed to spontaneously wrinkle at sufficiently low surface tensions (approximately 5 mN m-1). Interfacial shear rheology of the NPS assemblies was elastic-dominated, with the shear modulus ranging from 0.1 to 1 N m-1, comparable to values obtained for nanoparticle monolayers elsewhere. Our work paves the way for the development of designer, multicomponent oil-water interfaces with well-defined mechanical, structural, and functional properties.
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Affiliation(s)
- Anju Toor
- Department of Mechanical Engineering , University of California , 6141 Etcheverry Hall , Berkeley , California 94720 , United States
- Materials Sciences Division , Lawrence Berkeley National Laboratory , 1 Cyclotron Road , Berkeley , California 94720 , United States
| | - Joe Forth
- Materials Sciences Division , Lawrence Berkeley National Laboratory , 1 Cyclotron Road , Berkeley , California 94720 , United States
| | - Simone Bochner de Araujo
- Department of Chemical Engineering , Stanford University , 443 Via Ortega , Stanford , California 94305 , United States
| | - Maria Consiglia Merola
- Department of Chemical Engineering , Stanford University , 443 Via Ortega , Stanford , California 94305 , United States
| | - Yufeng Jiang
- Materials Sciences Division , Lawrence Berkeley National Laboratory , 1 Cyclotron Road , Berkeley , California 94720 , United States
- Department of Applied Science and Technology , University of California , Berkeley , California 94720 , United States
| | - Xubo Liu
- Materials Sciences Division , Lawrence Berkeley National Laboratory , 1 Cyclotron Road , Berkeley , California 94720 , United States
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering , Beijing University of Chemical Technology , Beijing 100029 , China
| | - Yu Chai
- Materials Sciences Division , Lawrence Berkeley National Laboratory , 1 Cyclotron Road , Berkeley , California 94720 , United States
- Department of Applied Science and Technology , University of California , Berkeley , California 94720 , United States
- The Molecular Foundry , Lawrence Berkeley National Laboratory , 1 Cyclotron Road , Berkeley , California 94720 , United States
| | - Honghao Hou
- Materials Sciences Division , Lawrence Berkeley National Laboratory , 1 Cyclotron Road , Berkeley , California 94720 , United States
| | - Paul D Ashby
- Materials Sciences Division , Lawrence Berkeley National Laboratory , 1 Cyclotron Road , Berkeley , California 94720 , United States
- The Molecular Foundry , Lawrence Berkeley National Laboratory , 1 Cyclotron Road , Berkeley , California 94720 , United States
| | - Gerald G Fuller
- Department of Chemical Engineering , Stanford University , 443 Via Ortega , Stanford , California 94305 , United States
| | - Thomas P Russell
- Materials Sciences Division , Lawrence Berkeley National Laboratory , 1 Cyclotron Road , Berkeley , California 94720 , United States
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering , Beijing University of Chemical Technology , Beijing 100029 , China
- Polymer Science and Engineering Department , University of Massachusetts , 120 Governors Drive, Conte Center for Polymer Research , Amherst , Massachusetts 01003 , United States
- Advanced Institute for Materials Research (AIMR) , Tohoku University , 2-1-1 Katahira , Aoba, Sendai 980-8577 , Japan
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53
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Whitby CP, Parthipan R. Influence of particle concentration on multiple droplet formation in Pickering emulsions. J Colloid Interface Sci 2019; 554:315-323. [PMID: 31302369 DOI: 10.1016/j.jcis.2019.07.017] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2019] [Revised: 07/05/2019] [Accepted: 07/07/2019] [Indexed: 11/30/2022]
Abstract
HYPOTHESIS Multiphase droplets form when oil and water are mixed together at the ambivalent conditions that occur close to phase inversion. In this paper we propose a mechanism for the stabilisation of multiphase droplets by a single population of particles. EXPERIMENTS We investigated the microstructure of emulsions formed when dodecane and water are mixed in the presence of hydrophobic fumed silica nanoparticles. We identified the range of compositions, mixing times and rates where water-in-oil-in-water emulsions are stabilised in a single mixing step. To explore how the particle availability and mixing conditions lead to multiple emulsion formation we used light scattering and microscopy techniques to probe the size and morphology of the drops, and the particle coverage of the interfaces. FINDINGS Our key finding is that to stabilise multiphase drops there should be sufficient particles available to coat water drops that are entrained within coalescing oil droplets. The size of an entrained drop is determined by the volume of the rupturing film that forms between the oil drops. The particle coating prevents the entrained drop from escaping into the external aqueous phase. These results suggest a simple route for controlling the formation and stability of multiple emulsions for encapsulation applications.
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Affiliation(s)
- Catherine P Whitby
- School of Fundamental Sciences, Massey University, Palmerston North 4442, New Zealand.
| | - Rajendran Parthipan
- School of Fundamental Sciences, Massey University, Palmerston North 4442, New Zealand
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54
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Hou H, Li J, Li X, Forth J, Yin J, Jiang X, Helms BA, Russell TP. Interfacial Activity of Amine-Functionalized Polyhedral Oligomeric Silsesquioxanes (POSS): A Simple Strategy To Structure Liquids. Angew Chem Int Ed Engl 2019; 58:10142-10147. [PMID: 31099947 DOI: 10.1002/anie.201903420] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Revised: 05/06/2019] [Indexed: 11/08/2022]
Abstract
Amine-functionalized polyhedral oligomeric silsesquioxane (POSS), the smallest, monodisperse cage-shaped silica cubic nanoparticle, is exceptionally interfacially active and can form assemblies that jam the toluene/water interface, locking in non-equilibrium shapes of one liquid phase in another. The packing density of the amine-functionalized POSS assembly at the water/toluene interface can be tuned by varying the concentration, the pH value, and the degree of POSS functionalization. Functionalized POSS gives a higher interface coverage, and hence a lower interfacial tension, than nanoparticle surfactants formed by interactions between functionalized nanoparticles and polymeric ligands. Hydrogen-bonded POSS surfactants are more stable at the interface, offering some unique advantages for generating Pickering emulsions over typical micron-sized colloidal particles and ligand-stabilized nanoparticle surfactants.
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Affiliation(s)
- Honghao Hou
- School of Chemistry & Chemical Engineering, State Key Laboratory for Metal Matrix Composite Materials, Shanghai Jiao Tong University, Shanghai, 200240, China.,Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA.,Polymer Science and Engineering Department, University of Massachusetts, Amherst, MA, 01003, USA
| | - Jin Li
- School of Chemistry & Chemical Engineering, State Key Laboratory for Metal Matrix Composite Materials, Shanghai Jiao Tong University, Shanghai, 200240, China.,Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA.,Polymer Science and Engineering Department, University of Massachusetts, Amherst, MA, 01003, USA
| | - Xiangming Li
- School of Chemistry & Chemical Engineering, State Key Laboratory for Metal Matrix Composite Materials, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Joe Forth
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Jie Yin
- School of Chemistry & Chemical Engineering, State Key Laboratory for Metal Matrix Composite Materials, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Xuesong Jiang
- School of Chemistry & Chemical Engineering, State Key Laboratory for Metal Matrix Composite Materials, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Brett A Helms
- Materials Sciences Division, Lawrence Berkeley National Laboratory, 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, Berkeley, CA, 94720, USA.,Polymer Science and Engineering Department, University of Massachusetts, Amherst, MA, 01003, USA.,Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
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55
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Hou H, Li J, Li X, Forth J, Yin J, Jiang X, Helms BA, Russell TP. Interfacial Activity of Amine‐Functionalized Polyhedral Oligomeric Silsesquioxanes (POSS): A Simple Strategy To Structure Liquids. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201903420] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Honghao Hou
- School of Chemistry & Chemical Engineering State Key Laboratory for Metal Matrix Composite Materials Shanghai Jiao Tong University Shanghai 200240 China
- Materials Sciences Division Lawrence Berkeley National Laboratory Berkeley CA 94720 USA
- Polymer Science and Engineering Department University of Massachusetts Amherst MA 01003 USA
| | - Jin Li
- School of Chemistry & Chemical Engineering State Key Laboratory for Metal Matrix Composite Materials Shanghai Jiao Tong University Shanghai 200240 China
- Materials Sciences Division Lawrence Berkeley National Laboratory Berkeley CA 94720 USA
- Polymer Science and Engineering Department University of Massachusetts Amherst MA 01003 USA
| | - Xiangming Li
- School of Chemistry & Chemical Engineering State Key Laboratory for Metal Matrix Composite Materials Shanghai Jiao Tong University Shanghai 200240 China
| | - Joe Forth
- Materials Sciences Division Lawrence Berkeley National Laboratory Berkeley CA 94720 USA
| | - Jie Yin
- School of Chemistry & Chemical Engineering State Key Laboratory for Metal Matrix Composite Materials Shanghai Jiao Tong University Shanghai 200240 China
| | - Xuesong Jiang
- School of Chemistry & Chemical Engineering State Key Laboratory for Metal Matrix Composite Materials Shanghai Jiao Tong University Shanghai 200240 China
| | - Brett A. Helms
- Materials Sciences Division Lawrence Berkeley National Laboratory 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 Berkeley CA 94720 USA
- Polymer Science and Engineering Department University of Massachusetts Amherst MA 01003 USA
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering Beijing University of Chemical Technology Beijing 100029 China
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56
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Wu X, Yuan Q, Liu S, Shi S, Russell TP, Wang D. Nanorod-Surfactant Assemblies and Their Interfacial Behavior at Liquid-Liquid Interfaces. ACS Macro Lett 2019; 8:512-518. [PMID: 35619362 DOI: 10.1021/acsmacrolett.9b00134] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
The interfacial behavior of cellulose nanocrystal (CNC) surfactants (CNCSs), formed by the interactions between CNCs dispersed in water and amine terminated polymer dissolved in oil, was investigated using in situ atomic force microscopy (AFM) as a function of pH and areal density of CNCSs. The AFM results show that the strength of the interactions between the CNCs and the ligands dictates the response of the CNCS assemblies to an applied compress whether the assemblies wrinkle or buckle or if the orientation of the CNCSs with respect to the interfaces is changed. AFM force curve measurements provide an alternative route to evaluate the interfacial tension and, more importantly, allow quantitative evaluation of the strength of interactions between the CNCs assembled at the interface.
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Affiliation(s)
- Xuefei Wu
- 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
| | - Shuyu 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
| | - 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
| | - 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, Massachusetts 01003, United States
- Materials Sciences Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, California 94720, United States
| | - 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
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57
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Forth J, Kim PY, Xie G, Liu X, Helms BA, Russell TP. Building Reconfigurable Devices Using Complex Liquid-Fluid Interfaces. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2019; 31:e1806370. [PMID: 30828869 DOI: 10.1002/adma.201806370] [Citation(s) in RCA: 98] [Impact Index Per Article: 19.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Revised: 11/12/2018] [Indexed: 06/09/2023]
Abstract
Liquid-fluid interfaces provide a platform both for structuring liquids into complex shapes and assembling dimensionally confined, functional nanomaterials. Historically, attention in this area has focused on simple emulsions and foams, in which surface-active materials such as surfactants or colloids stabilize structures against coalescence and alter the mechanical properties of the interface. In recent decades, however, a growing body of work has begun to demonstrate the full potential of the assembly of nanomaterials at liquid-fluid interfaces to generate functionally advanced, biomimetic systems. Here, a broad overview is given, from fundamentals to applications, of the use of liquid-fluid interfaces to generate complex, all-liquid devices with a myriad of potential applications.
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Affiliation(s)
- Joe Forth
- 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
| | - Ganhua Xie
- Materials Sciences Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA, 94720, USA
- Polymer Science and Engineering Department, University of Massachusetts, 120 Governors Drive, Conte Center for Polymer Research, Amherst, MA, 01003, USA
| | - Xubo Liu
- Materials Sciences Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA, 94720, USA
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Brett A Helms
- Materials Sciences Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA, 94720, USA
- The Molecular Foundry, Lawrence Berkeley National Laboratory, 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, University of Massachusetts, 120 Governors Drive, Conte Center for Polymer Research, Amherst, MA, 01003, USA
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
- WPI-Advanced Institute for Materials Research (WPI-AIMR), Tohoku University, 2-1-1 Katahira, Aoba, Sendai, 980-8577, Japan
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58
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Harnessing liquid-in-liquid printing and micropatterned substrates to fabricate 3-dimensional all-liquid fluidic devices. Nat Commun 2019; 10:1095. [PMID: 30842556 PMCID: PMC6403306 DOI: 10.1038/s41467-019-09042-y] [Citation(s) in RCA: 91] [Impact Index Per Article: 18.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Accepted: 02/06/2019] [Indexed: 11/08/2022] Open
Abstract
Systems comprised of immiscible liquids held in non-equilibrium shapes by the interfacial assembly and jamming of nanoparticle-polymer surfactants have significant potential to advance catalysis, chemical separations, energy storage and conversion. Spatially directing functionality within them and coupling processes in both phases remains a challenge. Here, we exploit nanoclay-polymer surfactant assemblies at an oil-water interface to produce a semi-permeable membrane between the liquids, and from them all-liquid fluidic devices with bespoke properties. Flow channels are fabricated using micropatterned 2D substrates and liquid-in-liquid 3D printing. The anionic walls of the device can be functionalized with cationic small molecules, enzymes, and colloidal nanocrystal catalysts. Multi-step chemical transformations can be conducted within the channels under flow, as can selective mass transport across the liquid-liquid interface for in-line separations. These all-liquid systems become automated using pumps, detectors, and control systems, revealing a latent ability for chemical logic and learning.
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59
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Maestro A. Tailoring the interfacial assembly of colloidal particles by engineering the mechanical properties of the interface. Curr Opin Colloid Interface Sci 2019. [DOI: 10.1016/j.cocis.2019.02.013] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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60
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Elbourne A, Dupont MF, Collett S, Truong VK, Xu X, Vrancken N, Baulin V, Ivanova EP, Crawford RJ. Imaging the air-water interface: Characterising biomimetic and natural hydrophobic surfaces using in situ atomic force microscopy. J Colloid Interface Sci 2019; 536:363-371. [DOI: 10.1016/j.jcis.2018.10.059] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2018] [Revised: 10/17/2018] [Accepted: 10/19/2018] [Indexed: 12/30/2022]
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61
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Zhang L, Lei Q, Luo J, Zeng M, Wang L, Huang D, Wang X, Mannan S, Peng B, Cheng Z. Natural Halloysites-Based Janus Platelet Surfactants for the Formation of Pickering Emulsion and Enhanced Oil Recovery. Sci Rep 2019; 9:163. [PMID: 30655562 PMCID: PMC6336865 DOI: 10.1038/s41598-018-36352-w] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2018] [Accepted: 11/05/2018] [Indexed: 11/23/2022] Open
Abstract
Janus colloidal surfactants with opposing wettabilities are receiving attention for their practical application in industry. Combining the advantages of molecular surfactants and particle-stabilized Pickering emulsions, Janus colloidal surfactants generate remarkably stable emulsions. Here we report a straightforward and cost-efficient strategy to develop Janus nanoplate surfactants (JNPS) from an aluminosilicate nanoclay, halloysite, by stepwise surface modification, including an innovative selective surface modification step. Such colloidal surfactants are found to be able to stabilize Pickering emulsions of different oil/water systems. The microstructural characterization of solidified polystyrene emulsions indicates that the emulsion interface is evenly covered by JNPS. The phase behaviors of water/oil emulsion generated by these novel platelet surfactants were also investigated. Furthermore, we demonstrate the application of JNPS for enhanced oil recovery with a microfluidic flooding test, showing a dramatic increase of oil recovery ratio. This research provides important insights for the design and synthesis of two-dimensional Janus colloidal surfactants, which could be utilized in biomedical, food and mining industries, especially for circumstances where high salinity and high temperature are involved.
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Affiliation(s)
- Lecheng Zhang
- Artie McFerrin Department of Chemical Engineering, Texas A&M University, College Station, TX, 77843-3122, USA.,Mary Kay O'Connor Process Safety Center, Artie McFerrin Department of Chemical Engineering, Texas A&M University, College Station, TX, 77843-3122, USA
| | - Qun Lei
- Research Institute of Petroleum Exploration & Development (RIPED), PetroChina, Beijing, 100083, China
| | - Jianhui Luo
- Research Institute of Petroleum Exploration & Development (RIPED), PetroChina, Beijing, 100083, China.,Key Laboratory of Nano Chemistry (KLNC), CNPC, Beijing, 100083, China
| | - Minxiang Zeng
- Artie McFerrin Department of Chemical Engineering, Texas A&M University, College Station, TX, 77843-3122, USA
| | - Ling Wang
- Artie McFerrin Department of Chemical Engineering, Texas A&M University, College Station, TX, 77843-3122, USA
| | - Dali Huang
- Department of Materials Science & Engineering, Texas A&M University, College Station, TX, 77843-3003, USA
| | - Xuezhen Wang
- Mary Kay O'Connor Process Safety Center, Artie McFerrin Department of Chemical Engineering, Texas A&M University, College Station, TX, 77843-3122, USA
| | - Sam Mannan
- Artie McFerrin Department of Chemical Engineering, Texas A&M University, College Station, TX, 77843-3122, USA.,Mary Kay O'Connor Process Safety Center, Artie McFerrin Department of Chemical Engineering, Texas A&M University, College Station, TX, 77843-3122, USA
| | - Baoliang Peng
- Research Institute of Petroleum Exploration & Development (RIPED), PetroChina, Beijing, 100083, China. .,Key Laboratory of Nano Chemistry (KLNC), CNPC, Beijing, 100083, China.
| | - Zhengdong Cheng
- Artie McFerrin Department of Chemical Engineering, Texas A&M University, College Station, TX, 77843-3122, USA. .,Mary Kay O'Connor Process Safety Center, Artie McFerrin Department of Chemical Engineering, Texas A&M University, College Station, TX, 77843-3122, USA. .,Department of Materials Science & Engineering, Texas A&M University, College Station, TX, 77843-3003, USA.
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62
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Shi S, Russell TP. Nanoparticle Assembly at Liquid-Liquid Interfaces: From the Nanoscale to Mesoscale. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2018; 30:e1800714. [PMID: 30035834 DOI: 10.1002/adma.201800714] [Citation(s) in RCA: 168] [Impact Index Per Article: 28.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2018] [Revised: 03/29/2018] [Indexed: 05/21/2023]
Abstract
In the past few decades, novel syntheses of a wide range of nanoparticles (NPs) with well-defined chemical composition and structure have opened tremendous opportunities in areas ranging from optical and electronic devices to biomedical markers. Controlling the assembly of such well-defined NPs is important to effectively harness their unique properties. The assembly of NPs at liquid-liquid interfaces is becoming a central topic both in surface and colloid science. Hierarchical structures, including 2D films, 3D capsules, and structured liquids, have been generating significant interest and are showing promise for physical, chemical, and biological applications. Here, a brief overview of the development of the self-assembly of NPs at liquid-liquid interfaces is provided, from theory to experiment, from synthetic NPs to bio-nanoparticles, from water-oil to water-water, and from "liquid-like" to "solid-like" assemblies.
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Affiliation(s)
- Shaowei Shi
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Thomas P Russell
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
- Department of Polymer Science and Engineering, University of Massachusetts, Amherst, MA, 01003, USA
- Materials Sciences Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA, 94720, USA
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63
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Li Y, Liu X, Zhang Z, Zhao S, Tian G, Zheng J, Wang D, Shi S, Russell TP. Adaptive Structured Pickering Emulsions and Porous Materials Based on Cellulose Nanocrystal Surfactants. Angew Chem Int Ed Engl 2018; 57:13560-13564. [DOI: 10.1002/anie.201808888] [Citation(s) in RCA: 65] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2018] [Indexed: 11/11/2022]
Affiliation(s)
- Yanan Li
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering; Beijing University of Chemical Technology; Beijing 100029 China
| | - Xubo Liu
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering; Beijing University of Chemical Technology; Beijing 100029 China
| | - Zhen Zhang
- Department of Chemical Engineering; Waterloo Institute for Nanotechnology; University of Waterloo; Waterloo Ontario Canada
| | - Shaojie Zhao
- Institute of Food Science and Technology; Chinese Academy of Agricultural Sciences; Beijing 100193 China
| | - Guifang Tian
- Institute of Food Science and Technology; Chinese Academy of Agricultural Sciences; Beijing 100193 China
| | - Jinkai Zheng
- Institute of Food Science and Technology; Chinese Academy of Agricultural Sciences; Beijing 100193 China
| | - Dong Wang
- 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; Beijing University of Chemical Technology; Beijing 100029 China
| | - Thomas P. Russell
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering; Beijing University of Chemical Technology; Beijing 100029 China
- Polymer Science and Engineering Department; University of Massachusetts; Amherst MA 01003 USA
- Materials Sciences Division; Lawrence Berkeley National Laboratory; 1 Cyclotron Road Berkeley CA 94720 USA
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64
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Li Y, Liu X, Zhang Z, Zhao S, Tian G, Zheng J, Wang D, Shi S, Russell TP. Adaptive Structured Pickering Emulsions and Porous Materials Based on Cellulose Nanocrystal Surfactants. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201808888] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Yanan Li
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering; Beijing University of Chemical Technology; Beijing 100029 China
| | - Xubo Liu
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering; Beijing University of Chemical Technology; Beijing 100029 China
| | - Zhen Zhang
- Department of Chemical Engineering; Waterloo Institute for Nanotechnology; University of Waterloo; Waterloo Ontario Canada
| | - Shaojie Zhao
- Institute of Food Science and Technology; Chinese Academy of Agricultural Sciences; Beijing 100193 China
| | - Guifang Tian
- Institute of Food Science and Technology; Chinese Academy of Agricultural Sciences; Beijing 100193 China
| | - Jinkai Zheng
- Institute of Food Science and Technology; Chinese Academy of Agricultural Sciences; Beijing 100193 China
| | - Dong Wang
- 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; Beijing University of Chemical Technology; Beijing 100029 China
| | - Thomas P. Russell
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering; Beijing University of Chemical Technology; Beijing 100029 China
- Polymer Science and Engineering Department; University of Massachusetts; Amherst MA 01003 USA
- Materials Sciences Division; Lawrence Berkeley National Laboratory; 1 Cyclotron Road Berkeley CA 94720 USA
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65
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Dilational rheology of monolayers of nano- and micropaticles at the liquid-fluid interfaces. Curr Opin Colloid Interface Sci 2018. [DOI: 10.1016/j.cocis.2018.05.001] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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66
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Li-Destri G, Tuccitto N, Livio PA, Messina GML, Pithan L, Marletta G. Energy-sustained reversible nanoscale order and conductivity increase in polymer thin films. POLYMER 2018. [DOI: 10.1016/j.polymer.2018.08.012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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67
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Yang Y, Chen P, Cao Y, Huang Z, Zhu G, Xu Z, Dai X, Chen S, Miao B, Yan LT. How Implementation of Entropy in Driving Structural Ordering of Nanoparticles Relates to Assembly Kinetics: Insight into Reaction-Induced Interfacial Assembly of Janus Nanoparticles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:9477-9488. [PMID: 30016871 DOI: 10.1021/acs.langmuir.8b01378] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The ability to understand and exploit entropic contributions to ordering transition is of essential importance in the design of self-assembling systems with well-controlled structures. However, much less is known about the role of assembly kinetics in entropy-driven phase behaviors. Here, by combining computer simulations and theoretical analysis, we report that the implementation of entropy in driving phase transition significantly depends on the kinetic process in the reaction-induced self-assembly of newly designed nanoparticle systems. In particular, such systems comprise binary Janus nanoparticles at the fluid-fluid interface and undergo phase transition driven by entropy and controlled by the polymerization reaction initiated from the surfaces of just one component of nanoparticles. Our simulations demonstrate that the competition between the reaction rate and the diffusive dynamics of nanoparticles governs the implementation of entropy in driving the phase transition from randomly mixed phase to intercalated phase in these interfacial nanoparticle mixtures, which thereby results in diverse kinetic pathways. At low reaction rates, the transition exhibits abrupt jump in the mixing parameter, in a similar way to first-order, equilibrium phase transition. Increasing the reaction rate diminishes the jumps until the transitions become continuous, behaving as a second-order-like phase transition, where a critical exponent, characterizing the transition, can be identified. We finally develop an analytical model of the blob theory of polymer chains to complement the simulation results and reveal essential scaling laws of the entropy-driven phase behaviors. In effect, our results allow for further opportunities to amplify the entropic contributions to the materials design via kinetic control.
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Affiliation(s)
- Ye Yang
- State Key Laboratory of Chemical Engineering, Department of Chemical Engineering , Tsinghua University , Beijing 100084 , China
| | - Pengyu Chen
- State Key Laboratory of Chemical Engineering, Department of Chemical Engineering , Tsinghua University , Beijing 100084 , China
| | - Yufei Cao
- State Key Laboratory of Chemical Engineering, Department of Chemical Engineering , Tsinghua University , Beijing 100084 , China
| | - Zihan Huang
- State Key Laboratory of Chemical Engineering, Department of Chemical Engineering , Tsinghua University , Beijing 100084 , China
| | - Guolong Zhu
- State Key Laboratory of Chemical Engineering, Department of Chemical Engineering , Tsinghua University , Beijing 100084 , China
| | - Ziyang Xu
- State Key Laboratory of Chemical Engineering, Department of Chemical Engineering , Tsinghua University , Beijing 100084 , China
| | - Xiaobin Dai
- State Key Laboratory of Chemical Engineering, Department of Chemical Engineering , Tsinghua University , Beijing 100084 , China
| | - Shi Chen
- State Key Laboratory of Chemical Engineering, Department of Chemical Engineering , Tsinghua University , Beijing 100084 , China
| | - Bing Miao
- College of Materials Science and Opto-Electronic Technology , University of Chinese Academy of Sciences , Beijing 100049 , China
| | - Li-Tang Yan
- State Key Laboratory of Chemical Engineering, Department of Chemical Engineering , Tsinghua University , Beijing 100084 , China
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68
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Zhang Z, Jiang Y, Huang C, Chai Y, Goldfine E, Liu F, Feng W, Forth J, Williams TE, Ashby PD, Russell TP, Helms BA. Guiding kinetic trajectories between jammed and unjammed states in 2D colloidal nanocrystal-polymer assemblies with zwitterionic ligands. SCIENCE ADVANCES 2018; 4:eaap8045. [PMID: 30083598 PMCID: PMC6070361 DOI: 10.1126/sciadv.aap8045] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2017] [Accepted: 06/26/2018] [Indexed: 05/03/2023]
Abstract
Mesostructured matter composed of colloidal nanocrystals in solidified architectures abounds with broadly tunable catalytic, magnetic, optoelectronic, and energy storing properties. Less common are liquid-like assemblies of colloidal nanocrystals in a condensed phase, which may have different energy transduction behaviors owing to their dynamic character. Limiting investigations into dynamic colloidal nanocrystal architectures is the lack of schemes to control or redirect the tendency of the system to solidify. We show how to solidify and subsequently reconfigure colloidal nanocrystal assemblies dimensionally confined to a liquid-liquid interface. Our success in this regard hinged on the development of competitive chemistries anchoring or releasing the nanocrystals to or from the interface. With these chemistries, it was possible to control the kinetic trajectory between quasi-two-dimensional jammed (solid-like) and unjammed (liquid-like) states. In future schemes, it may be possible to leverage this control to direct the formation or destruction of explicit physical pathways for energy carriers to migrate in the system in response to an external field.
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Affiliation(s)
- Ziyi Zhang
- The Molecular Foundry, Lawrence Berkeley National Laboratory, One Cyclotron Road, Berkeley, CA 94720, USA
- Department of Materials Science and Engineering, University of California, Berkeley, Hearst Mining Building, Berkeley, CA 94720, USA
| | - Yufeng Jiang
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Caili Huang
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Yu Chai
- The Molecular Foundry, Lawrence Berkeley National Laboratory, One Cyclotron Road, Berkeley, CA 94720, USA
- Department of Materials Science and Engineering, University of California, Berkeley, Hearst Mining Building, Berkeley, CA 94720, USA
| | - Elise Goldfine
- The Molecular Foundry, Lawrence Berkeley National Laboratory, One Cyclotron Road, Berkeley, CA 94720, USA
| | - Feng Liu
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Wenqian Feng
- The Molecular Foundry, Lawrence Berkeley National Laboratory, One Cyclotron Road, Berkeley, CA 94720, USA
| | - Joe Forth
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Teresa E. Williams
- The Molecular Foundry, Lawrence Berkeley National Laboratory, One Cyclotron Road, Berkeley, CA 94720, USA
| | - Paul D. Ashby
- The Molecular Foundry, Lawrence Berkeley National Laboratory, One Cyclotron Road, Berkeley, CA 94720, USA
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Thomas P. Russell
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
- Polymer Science and Engineering Department, University of Massachusetts, 120 Governors Drive, Conte Center for Polymer Research, Amherst, MA 01003, USA
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
- World Premier International Research Center Initiative–Advanced Institute for Materials Research (WPI-AIMR), Tohoku University, 2-1-1 Katahira, Aoba, Sendai 980-8577, Japan
- Corresponding author. (T.P.R.); (B.A.H.)
| | - Brett A. Helms
- The Molecular Foundry, Lawrence Berkeley National Laboratory, One Cyclotron Road, Berkeley, CA 94720, USA
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
- Corresponding author. (T.P.R.); (B.A.H.)
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69
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Vatanparast H, Shahabi F, Bahramian A, Javadi A, Miller R. The Role of Electrostatic Repulsion on Increasing Surface Activity of Anionic Surfactants in the Presence of Hydrophilic Silica Nanoparticles. Sci Rep 2018; 8:7251. [PMID: 29740036 PMCID: PMC5940767 DOI: 10.1038/s41598-018-25493-7] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2017] [Accepted: 04/22/2018] [Indexed: 11/22/2022] Open
Abstract
Hydrophilic silica nanoparticles alone are not surface active. They, however, develop a strong electrostatic interaction with ionic surfactants and consequently affect their surface behavior. We report the interfacial behavior of n-heptane/anionic-surfactant-solutions in the presence of hydrophilic silica nanoparticles. The surfactants are sodium dodecyl sulfate (SDS) and dodecyl benzene sulfonic acid (DBSA), and the diameters of the used particles are 9 and 30 nm. Using experimental tensiometry, we show that nanoparticles retain their non-surface-active nature in the presence of surfactants and the surface activity of surfactant directly increases with the concentration of nanoparticles. This fact was attributed to the electrostatic repulsive interaction between the negatively charged nanoparticles and the anionic surfactant molecules. The role of electrostatic repulsion on increasing surface activity of the surfactant has been discussed. Further investigations have been performed for screening the double layer charge of the nanoparticles in the presence of salt. Moreover, the hydrolysis of SDS molecules in the presence of silica nanoparticles and the interaction of nanoparticles with SDS inherent impurities have been studied. According to our experimental observations, silica nanoparticles alleviate the effects of dodecanol, formed by SDS hydrolysis, on the interfacial properties of SDS solution.
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Affiliation(s)
- Hamid Vatanparast
- Institute of Petroleum Engineering, College of Engineering, University of Tehran, Tehran, Iran. .,IOR Research Institute (IORI), Tehran, Iran.
| | - Farshid Shahabi
- Institute of Petroleum Engineering, College of Engineering, University of Tehran, Tehran, Iran
| | - Alireza Bahramian
- Institute of Petroleum Engineering, College of Engineering, University of Tehran, Tehran, Iran.
| | - Aliyar Javadi
- Institute of Petroleum Engineering, College of Engineering, University of Tehran, Tehran, Iran
| | - Reinhard Miller
- Max-Planck-Institute for Colloid and Interface Science, D-14476, Golm, Germany
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70
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Hua X, Bevan MA, Frechette J. Competitive Adsorption between Nanoparticles and Surface Active Ions for the Oil-Water Interface. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:4830-4842. [PMID: 29631392 DOI: 10.1021/acs.langmuir.8b00053] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Nanoparticles (NPs) can add functionality (e.g., catalytic, optical, rheological) to an oil-water interface. Adsorption of ∼10 nm NPs can be reversible; however, the mechanisms for adsorption and its effects on surface pressure remain poorly understood. Here we demonstrate how the competitive reversible adsorption of NPs and surfactants at fluid interfaces can lead to independent control of both the adsorbed amount and surface pressure. In contrast to prior work, both species investigated (NPs and surfactants) interact reversibly with the interface and without the surface active species binding to NPs. Independent measurements of the adsorption and surface pressure isotherms allow determination of the equation of state (EOS) of the interface under conditions where the NPs and surfactants are both in dynamic equilibrium with the bulk phase. The adsorption and surface pressure measurements are performed with gold NPs of two different sizes (5 and 10 nm), at two pH values, and across a wide concentration range of surfactant (tetrapentylammonium, TPeA+) and NPs. We show that free surface active ions compete with NPs for the interface and give rise to larger surface pressures upon the adsorption of NPs. Through a competitive adsorption model, we decouple the contributions of NPs wetting at the interface and their surface activity on the measured surface pressure. We also demonstrate reversible control of adsorbed amount via changes in the surfactant concentration or the aqueous phase pH.
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Affiliation(s)
- Xiaoqing Hua
- Chemical and Biomolecular Engineering , Johns Hopkins University , Baltimore , Maryland 21218 , United States
| | - Michael A Bevan
- Chemical and Biomolecular Engineering , Johns Hopkins University , Baltimore , Maryland 21218 , United States
| | - Joelle Frechette
- Chemical and Biomolecular Engineering , Johns Hopkins University , Baltimore , Maryland 21218 , United States
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71
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Zhu G, Huang Z, Xu Z, Yan LT. Tailoring Interfacial Nanoparticle Organization through Entropy. Acc Chem Res 2018; 51:900-909. [PMID: 29589915 DOI: 10.1021/acs.accounts.8b00001] [Citation(s) in RCA: 64] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
The ability to tailor the interfacial behaviors of nanoparticles (NPs) is crucial not only for the design of novel nanostructured materials with superior properties and of interest for many promising applications such as water purification, enhanced oil recovery, and innovative energy transduction, but also for a better insight into many biological systems where nanoscale particles such as proteins or viruses can interact and organize at certain interfaces. As a class of emerging building blocks, Janus NPs consisting of two compartments of different chemistry or polarity are ideal candidates to generate tunable and stable interfacial nanostructures because of the asymmetric nature. However, precise control over such interfacial nanostructures toward a controllable order and even responses to various external stimuli still remains a great challenge as the interfaces do not simply serve as a scaffold but rather induce complex enthalpic and entropic interactions. In this Account, we focus on our efforts on exploiting entropy strategies based on computational design to tailor the spatial distribution and ordering of NPs at the interfaces of various systems. First, we introduce the physical principle of entropic ordering, being the theoretical basis of entropy-directed interfacial self-assembly. The typical types of entropy, which have been harnessed to manipulate the interfacial NP organization, are then summarized, including conformational entropy, shape entropy, and rotational and vibrational entropy. Next, we describe the emerging pathways in the development of novel environmentally responsive systems which involve the use of entropy to access the stimuli-responsive behaviors of interfacial nanostructures. Taking one step further, how molecular architectures can be tailored to tune the entropic contributions to the interfacial self-assembly is demonstrated, through identifying the effects of various intrinsic properties of block segments, such as chain length and stiffness, on entropy-governed precise organization of Janus NPs at block copolymer interfaces. Finally, we detail some key factors for tailoring interfacial organization through entropy. In summary, entropy strategies offer a promising and abundant framework for precisely programming the structural organization of NPs at interfaces. We discuss future directions to signify the framework in tailoring the interfacial organization of NPs. We hope that this Account will promote further efforts toward fundamental research and the wide applications of designed interfacial assemblies in new types of functional nanomaterials and beyond.
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Affiliation(s)
- Guolong Zhu
- State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, P. R. China
| | - Zihan Huang
- State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, P. R. China
| | - Ziyang Xu
- State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, P. R. China
| | - Li-Tang Yan
- State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, P. R. China
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72
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In situ X-ray scattering observation of two-dimensional interfacial colloidal crystallization. Nat Commun 2018; 9:1335. [PMID: 29626195 PMCID: PMC5889402 DOI: 10.1038/s41467-018-03767-y] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2017] [Accepted: 03/12/2018] [Indexed: 11/23/2022] Open
Abstract
Charged colloids at interfaces hold such a simple configuration that their interactions are supposed to be fully elucidated in the framework of classical electrostatics, yet the mysterious existence of attractive forces between these like-charged particles has puzzled the scientific community for decades. Here, we perform the in situ grazing-incidence small-angle X-ray scattering study of the dynamic self-assembling process of two-dimensional interfacial colloids. This approach allows simultaneous monitoring of the in-plane structure and ordering and the out-of-plane immersion depth variation. Upon compression, the system undergoes multiple metastable intermediate states before the stable hexagonal close-packed monolayer forms under van der Waals attraction. Remarkably, the immersion depth of colloidal particles is found to increase as the interparticle distance decreases. Numerical simulations demonstrate the interface around a colloid is deformed by the electrostatic force from its neighboring particles, which induces the long-range capillary attraction. Colloids adsorbed at fluid interfaces can self-assemble into crystal, but the detail remains largely unknown due to experimental challenges. Using in situ X-ray scattering, Wu et al. show that out-of-plane electrostatic force induces in-plane capillary attraction between like-charged particles.
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73
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Forth J, Liu X, Hasnain J, Toor A, Miszta K, Shi S, Geissler PL, Emrick T, Helms BA, Russell TP. Reconfigurable Printed Liquids. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2018; 30:e1707603. [PMID: 29573293 DOI: 10.1002/adma.201707603] [Citation(s) in RCA: 106] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/29/2017] [Revised: 01/31/2018] [Indexed: 06/08/2023]
Abstract
Liquids lack the spatial order required for advanced functionality. Interfacial assemblies of colloids, however, can be used to shape liquids into complex, 3D objects, simultaneously forming 2D layers with novel magnetic, plasmonic, or structural properties. Fully exploiting all-liquid systems that are structured by their interfaces would create a new class of biomimetic, reconfigurable, and responsive materials. Here, printed constructs of water in oil are presented. Both form and function are given to the system by the assembly and jamming of nanoparticle surfactants, formed from the interfacial interaction of nanoparticles and amphiphilic polymers that bear complementary functional groups. These yield dissipative constructs that exhibit a compartmentalized response to chemical cues. Potential applications include biphasic reaction vessels, liquid electronics, novel media for the encapsulation of cells and active matter, and dynamic constructs that both alter, and are altered by, their external environment.
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Affiliation(s)
- Joe Forth
- Materials Sciences Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA, 94720, USA
| | - Xubo Liu
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Jaffar Hasnain
- Materials Sciences Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA, 94720, USA
- Department of Chemistry, University of California, Berkeley, CA, 94720, USA
| | - Anju Toor
- Materials Sciences Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA, 94720, USA
- Department of Mechanical Engineering, University of California, Berkeley, CA, 94720, USA
| | - Karol Miszta
- The Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Shaowei Shi
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Phillip L Geissler
- Department of Chemistry, University of California, Berkeley, CA, 94720, USA
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Todd Emrick
- Polymer Science and Engineering Department, Conte Center for Polymer Research, University of Massachusetts, 120 Governors Drive, Amherst, MA, 01003, USA
| | - Brett A Helms
- Materials Sciences Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA, 94720, USA
- The Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Thomas P Russell
- Materials Sciences Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA, 94720, USA
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing, Beijing University of Chemical Technology, Beijing, 100029, China
- Polymer Science and Engineering Department, Conte Center for Polymer Research, University of Massachusetts, 120 Governors Drive, Amherst, MA, 01003, USA
- WPI - Advanced Institute for Materials Research (WPI-AIMR), Tohoku University, 2-1-1 Katahira, Aoba, Sendai, 980-8577, Japan
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74
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Shi W, Zhang Z, Li S. Quantitative Prediction of Position and Orientation for Platonic Nanoparticles at Liquid/Liquid Interfaces. J Phys Chem Lett 2018; 9:373-382. [PMID: 29298065 DOI: 10.1021/acs.jpclett.7b03187] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Because of their intrinsic geometric structure of vertices, edges, and facets, Platonic nanoparticles are promising materials in plasmonics and biosensing. Their position and orientation often play a crucial role in determining the resultant assembly structures at a liquid/liquid interface. Here, we numerically explored all possible orientations of three Platonic nanoparticles (tetrahedron, cube, and octahedron) and found that a specific orientation (vertex-up, edge-up, or facet-up) is more preferred than random orientations. We also demonstrated their positions and orientations can be quantitatively predicted when the surface tensions dominate their total interaction energies. The line tensions may affect their positions and orientations only when total interaction energies are close to each other for more than one orientation. The molecular dynamics simulation results were in excellent agreement with our theoretical predictions. Our theory will advance our ability toward predicting the final structures of Platonic nanoparticle assemblies at a liquid/liquid interface.
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Affiliation(s)
- Wenxiong Shi
- Center for Programmable Materials, School of Materials Science and Engineering, Nanyang Technological University , Singapore 639798
| | - Zhonghan Zhang
- Center for Programmable Materials, School of Materials Science and Engineering, Nanyang Technological University , Singapore 639798
| | - Shuzhou Li
- Center for Programmable Materials, School of Materials Science and Engineering, Nanyang Technological University , Singapore 639798
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