1
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Bi W, Le M, Jia YG, Bao Z, Sun S, Wang C, Binks BP, Chen Y. Cholic Acid/Glutathione-Assembled Nanofibrils for Stabilizing Pickering Emulsion Biogels. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024:e2403667. [PMID: 39148219 DOI: 10.1002/smll.202403667] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2024] [Revised: 07/26/2024] [Indexed: 08/17/2024]
Abstract
Achieving the delicate balance required for both emulsion and gel characteristics, while also imparting biological functionality in gelled emulsions, poses a significant challenge. Herein, Pickering emulsion biogels stabilized is reported by novel biological nanofibrils assembled from natural glutathione (GSH) and a tripod cholic acid derivative (TCA) via electrostatic interactions. GSH, composed of tripeptides with carboxyl groups, facilitates the protonation and dissolution of TCA compounds in water and the electrostatic interactions between GSH and TCA trigger nanofibrillar assembly. Fibrous nuclei initially emerge, and the formed mature nanofibrils can generate a stable hydrogel at a low solid concentration. These nanofibrils exhibit efficient emulsifying capability, enabling the preparation of stable Pickering oil-in-water (O/W) emulsion gels with adjustable phase volume ratios. The entangled nanofibrils adsorbed at the oil-water interface restrict droplet movement, imparting viscoelasticity and injectability to the emulsions. Remarkably, the biocompatible nanofibrils and stabilized emulsion gels demonstrate promising scavenging properties against reactive oxygen species (ROS). This strategy may open new scenarios for the design of advanced emulsion gel materials using natural precursors and affordable building blocks for biomedical applications.
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Affiliation(s)
- Wenzhi Bi
- National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou, 510006, China
| | - Mengqi Le
- National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou, 510006, China
| | - Yong-Guang Jia
- Center for Advanced Materials Research, Beijing Normal University, Zhuhai, 519087, China
| | - Zeyu Bao
- National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou, 510006, China
| | - Shuo Sun
- National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou, 510006, China
| | - Chaoyang Wang
- School of Materials Science and Engineering, South China University of Technology, Guangzhou, 510641, China
| | - Bernard P Binks
- Department of Chemistry, University of Hull, Hull, HU6 7RX, UK
| | - Yunhua Chen
- National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou, 510006, China
- School of Materials Science and Engineering, South China University of Technology, Guangzhou, 510641, China
- Key Laboratory of Biomedical Engineering of Guangdong Province, andInnovation Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou, 510006, China
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2
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Luo Y, Li K, Luo J, Wen Y, Shi S. Nanoparticle Surfactants at Complex Emulsion Interfaces. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024:e2401377. [PMID: 38778735 DOI: 10.1002/smll.202401377] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2024] [Revised: 05/05/2024] [Indexed: 05/25/2024]
Abstract
Using nanoparticle surfactants to stabilize the liquid-liquid interface has attracted significant attention for developing all-liquid constructs including emulsions and liquid devices. Here, an efficient strategy is demonstrated to stabilize complex emulsions that consist of multiphase droplets by using the co-assembly between the cellulose nanocrystal and amine-functionalized polystyrene. Cellulose nanocrystal surfactants (CNCSs) form and assembly in situ at the specified area of emulsion interface, showing a unique pH responsiveness due to their dynamic nature and allowing the reconfiguration of complex emulsion from encapsulated to Janus structures. Such complex emulsions can be further used as the templates to fabricate polymeric particles with hollow, semi-spherical, and spherical shapes on large scale. These findings establish a promising platform for designing intelligent soft matter that can be used in microreactors, sensors, and anisotropic materials.
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Affiliation(s)
- Yuzheng Luo
- State Key Laboratory of Chemical Resource Engineering, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Kaijuan Li
- State Key Laboratory of Chemical Resource Engineering, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Jiaqiu Luo
- State Key Laboratory of Chemical Resource Engineering, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Yunhui Wen
- State Key Laboratory of Chemical Resource Engineering, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Shaowei Shi
- State Key Laboratory of Chemical Resource Engineering, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
- Beijing Engineering Research Center for the Synthesis and Applications of Waterborne Polymers, Beijing University of Chemical Technology, Beijing, 100029, China
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3
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Heo J, Seo S, Yun H, Ku KH. Stimuli-responsive nanoparticle self-assembly at complex fluid interfaces: a new insight into dynamic surface chemistry. NANOSCALE 2024; 16:3951-3968. [PMID: 38319675 DOI: 10.1039/d3nr05990a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2024]
Abstract
The self-assembly of core/shell nanoparticles (NPs) at fluid interfaces is a rapidly evolving area with tremendous potential in various fields, including biomedicine, display devices, catalysts, and sensors. This review provides an in-depth exploration of the current state-of-the-art in the programmed design of stimuli-responsive NP assemblies, with a specific focus on inorganic core/organic shell NPs below 100 nm for their responsive adsorption properties at fluid and polymer interfaces. The interface properties, such as ligands, charge, and surface chemistry, play a significant role in dictating the forces and energies governing both NP-NP and NP-hosting matrix interactions. We highlight the fundamental principles governing the reversible surface chemistry of NPs and present detailed experimental examples in the following three key aspects of stimuli-responsive NP assembly: (i) stimuli-driven assembly of NPs at the air/liquid interface, (ii) reversible NP assembly at the liquid/liquid interface, including films and Pickering emulsions, and (iii) hybrid NP assemblies at the polymer/polymer and polymer/water interfaces that exhibit stimuli-responsive behaviors. Finally, we address current challenges in existing approaches and offer a new perspective on the advances in this field.
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Affiliation(s)
- Jieun Heo
- School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea.
| | - Seunghwan Seo
- School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea.
| | - Hongseok Yun
- Department of Chemistry and Research Institute for Convergence of Basic Science, Hanyang University, Seoul 04763, Republic of Korea.
| | - Kang Hee Ku
- School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea.
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4
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Yang J, Gu Z, Cheng L, Li Z, Li C, Hong Y, Qian JY. Formation Mechanism of Starch-Based Double Emulsions from the Interfacial Perspective. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:17154-17164. [PMID: 37974415 DOI: 10.1021/acs.langmuir.3c02162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2023]
Abstract
Double emulsions are of significant practical value in protecting the core material owing to their multicomponent structure and have thus been applied in various fields, such as food, cosmetics, and drugs. However, the mechanism of double emulsion formation by native starch is not well established. Herein, we demonstrate a facile route to develop type-A, type-B, and type-C double emulsions using native starch and develop an innovative design for a carrier. Interfacial interaction, enthalpy changes of starch, and interfacial properties are key factors governing the formation of double emulsions and controlling the type of double emulsions formed. Therefore, the results of this study provide a better understanding of how and what type of starch-based double emulsions are formed.
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Affiliation(s)
- Jie Yang
- School of Food Science and Engineering, Jiangnan University, Wuxi 214122, China
- School of Food Science and Engineering, Yangzhou University, Yangzhou 225127, China
| | - Zhengbiao Gu
- School of Food Science and Engineering, Jiangnan University, Wuxi 214122, China
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, Wuxi 214122, China
- Collaborative Innovation Center of Food Safety and Quality Control, Jiangnan University, Wuxi 214122, China
| | - Li Cheng
- School of Food Science and Engineering, Jiangnan University, Wuxi 214122, China
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, Wuxi 214122, China
- Collaborative Innovation Center of Food Safety and Quality Control, Jiangnan University, Wuxi 214122, China
| | - Zhaofeng Li
- School of Food Science and Engineering, Jiangnan University, Wuxi 214122, China
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, Wuxi 214122, China
- Collaborative Innovation Center of Food Safety and Quality Control, Jiangnan University, Wuxi 214122, China
| | - Caiming Li
- School of Food Science and Engineering, Jiangnan University, Wuxi 214122, China
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, Wuxi 214122, China
- Collaborative Innovation Center of Food Safety and Quality Control, Jiangnan University, Wuxi 214122, China
| | - Yan Hong
- School of Food Science and Engineering, Jiangnan University, Wuxi 214122, China
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, Wuxi 214122, China
- Collaborative Innovation Center of Food Safety and Quality Control, Jiangnan University, Wuxi 214122, China
| | - Jian-Ya Qian
- School of Food Science and Engineering, Yangzhou University, Yangzhou 225127, China
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5
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He R, Sun S, Cui J, Chi M, Wang Z, Hu S. pH/magnetic dual responsive Pickering emulsion stabilized by Fe 3O 4@SiO 2@chitosan nanoparticles. Phys Chem Chem Phys 2023; 25:25780-25788. [PMID: 37724345 DOI: 10.1039/d3cp03400c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/20/2023]
Abstract
In recent years, Pickering emulsifiers have been widely used in various production fields due to their excellent structural stability, biocompatibility and environmental friendliness. For some applications, it is required that the emulsifier can quickly respond to environmental stimuli and control the transition between stable and unstable emulsions. In this paper, we report a novel composite Pickering emulsifier with Fe3O4 as the core and magnetic response recognition body, silica as the intermediate protective layer, and chitosan (CS) of different molecular weights to endow solid particles with surface activity and pH-responsive properties. This emulsifier can stabilize the emulsion in the emulsion system with deionized water as the aqueous phase and liquid paraffin as the oil phase and can control the demulsification of the formed emulsion under the dual pH/magnetic stimulation. The experimental results show that Fe3O4@SiO2@CS has good paramagnetism and pH responsiveness. The particle size of the composite emulsifier nanoparticles is between 90 nm and 120 nm, and the best stabilizing effect of the emulsion is achieved when the dosage is 0.5 wt%. In the pH range of 3-11, the emulsifier can rapidly demulsify a stable paraffin oil-water emulsion system under the action of a magnetic field of strength 0.4 T. The pH response of the emulsifier is as follows: when pH ≤ 2, the system can form a stable emulsion, which is composed of fully protonated chitosan as a free chain segment and Fe3O4@SiO2. Emulsion stabilization was achieved with monolithic Fe3O4@SiO2@CS as an emulsifier at pH > 2, and demulsification was achieved at pH ≈ pKb (CS) at 298 K. The research in this paper can provide a feasible idea and synthesis method for the preparation of organic-inorganic composite structure emulsifier.
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Affiliation(s)
- Runna He
- School of Materials Science and Engineering, China University of Petroleum (East China), Qingdao 266580, China.
| | - Shuangqing Sun
- School of Materials Science and Engineering, China University of Petroleum (East China), Qingdao 266580, China.
- Institute of Advanced Materials, China University of Petroleum (East China), Qingdao 266580, China
| | - Jianpeng Cui
- School of Materials Science and Engineering, China University of Petroleum (East China), Qingdao 266580, China.
| | - Mingshuo Chi
- School of Materials Science and Engineering, China University of Petroleum (East China), Qingdao 266580, China.
| | - Zhikun Wang
- School of Materials Science and Engineering, China University of Petroleum (East China), Qingdao 266580, China.
- Institute of Advanced Materials, China University of Petroleum (East China), Qingdao 266580, China
| | - Songqing Hu
- School of Materials Science and Engineering, China University of Petroleum (East China), Qingdao 266580, China.
- Institute of Advanced Materials, China University of Petroleum (East China), Qingdao 266580, China
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6
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Zeininger L. Responsive Janus droplets as modular sensory layers for the optical detection of bacteria. Anal Bioanal Chem 2023:10.1007/s00216-023-04838-w. [PMID: 37450000 PMCID: PMC10404245 DOI: 10.1007/s00216-023-04838-w] [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: 11/18/2022] [Revised: 06/28/2023] [Accepted: 06/30/2023] [Indexed: 07/18/2023]
Abstract
The field of biosensor development is fueled by innovations in new functional transduction materials and technologies. Material innovations promise to extend current sensor hardware limitations, reduce analysis costs, and ensure broad application of sensor methods. Optical sensors are particularly attractive because they enable sensitive and noninvasive analyte detection in near real-time. Optical transducers convert physical, chemical, or biological events into detectable changes in fluorescence, refractive index, or spectroscopic shifts. Thus, in addition to sophisticated biochemical selector designs, smart transducers can improve signal transmission and amplification, thereby greatly facilitating the practical applicability of biosensors, which, to date, is often hampered by complications such as difficult replication of reproducible selector-analyte interactions within a uniform and consistent sensing area. In this context, stimuli-responsive and optically active Janus emulsions, which are dispersions of kinetically stabilized biphasic fluid droplets, have emerged as a novel triggerable material platform that provides as a versatile and cost-effective alternative for the generation of reproducible, highly sensitive, and modular optical sensing layers. The intrinsic and unprecedented chemical-morphological-optical coupling inside Janus droplets has facilitated optical signal transduction and amplification in various chemo- and biosensor paradigms, which include examples for the rapid and cost-effective detection of major foodborne pathogens. These initial demonstrations resulted in detection limits that rival the capabilities of current commercial platforms. This trend article aims to present a conceptual summary of these initial efforts and to provide a concise and comprehensive overview of the pivotal kinetic and thermodynamic principles that govern the ability of Janus droplets to sensitively and selectively respond to and interact with bacteria.
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Affiliation(s)
- Lukas Zeininger
- Department of Colloid Chemistry, Max Planck Institute of Colloids and Interfaces, Am Muehlenberg 1, 14476, Potsdam, Germany.
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7
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Qin X, Bo Q, Qin P, Wang S, Liu K. Fabrication of WPI-EGCG covalent conjugates/gellan gum double network emulsion gels by duo-induction of GDL and CaCl2 for colon-controlled Lactobacillus Plantarum delivery. Food Chem 2023; 404:134513. [DOI: 10.1016/j.foodchem.2022.134513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Revised: 09/14/2022] [Accepted: 10/02/2022] [Indexed: 11/22/2022]
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8
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Yang D, Feng Y, Yao X, Zhao B, Li D, Liu N, Fang Y, Midgley A, Liu D, Katsuyoshi N. Recent advances in bioactive nanocrystal-stabilized Pickering emulsions: Fabrication, characterization, and biological assessment. Compr Rev Food Sci Food Saf 2023; 22:946-970. [PMID: 36546411 DOI: 10.1111/1541-4337.13096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Revised: 10/07/2022] [Accepted: 12/01/2022] [Indexed: 12/24/2022]
Abstract
Numerous literatures have shown the advantages of Pickering emulsion (PE) for the delivery of bioactive ingredients in the fields of food, medicine, and cosmetics, among others. On this basis, the multi-loading mode of bioactives (internal phase encapsulation and/or loading at the interface) in small molecular bioactives nanocrystal-stabilized PE (BNC-PE) enables them higher loading efficiencies, controlled release, and synergistic or superimposed effects. Therefore, BNC-PE offers an efficacious delivery system. In this review, we briefly summarize BNC-PE fabrication and characterization, with a focus on the processes of possible evolution and absorption of differentially applied BNC-PE when interacting with the body. In addition, methods of monitoring changes and absorption of BNC-PE in vivo, from the nanomaterial perspective, are also introduced. The purpose of this review is to provide an accessible and comprehensive methodology for the characterization and evaluation of BNC-PE after formulation and preparation, especially in relation to biological assessment and detailed mechanisms throughout the absorption process of BNC-PE in vivo.
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Affiliation(s)
- Dan Yang
- School of Food Science and Engineering, Shaanxi University of Science and Technology, Xi'an, Shaanxi, China
- School of Biomedical and Pharmaceutical Science, Shaanxi University of Science and Technology, Xi'an, Shaanxi, China
| | - Yuqi Feng
- School of Food Science and Engineering, Shaanxi University of Science and Technology, Xi'an, Shaanxi, China
- School of Biomedical and Pharmaceutical Science, Shaanxi University of Science and Technology, Xi'an, Shaanxi, China
| | - Xiaolin Yao
- School of Food Science and Engineering, Shaanxi University of Science and Technology, Xi'an, Shaanxi, China
- School of Biomedical and Pharmaceutical Science, Shaanxi University of Science and Technology, Xi'an, Shaanxi, China
| | - Baofu Zhao
- School of Food Science and Engineering, Shaanxi University of Science and Technology, Xi'an, Shaanxi, China
- School of Biomedical and Pharmaceutical Science, Shaanxi University of Science and Technology, Xi'an, Shaanxi, China
| | - Dan Li
- School of Food Science and Engineering, Shaanxi University of Science and Technology, Xi'an, Shaanxi, China
- School of Biomedical and Pharmaceutical Science, Shaanxi University of Science and Technology, Xi'an, Shaanxi, China
| | - Ning Liu
- School of Food Science and Engineering, Shaanxi University of Science and Technology, Xi'an, Shaanxi, China
- School of Biomedical and Pharmaceutical Science, Shaanxi University of Science and Technology, Xi'an, Shaanxi, China
| | - Yapeng Fang
- Department of Food Science and Engineering, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China
| | - Adam Midgley
- Key Laboratory of Bioactive Materials (MoE), College of Life Sciences, Nankai University, Tianjin, China
| | - Dechun Liu
- Institute of Medical Research, Northwestern Polytechnical University, Xi'an, Shaanxi, China
| | - Nishinari Katsuyoshi
- Glyn O. Phillips Hydrocolloid Research Centre, School of Bioengineering and Food Science, Hubei University of Technology, Wuhan, China
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9
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Pavlovic M, Ramiya Ramesh Babu HK, Djalali S, Pavlovic Z, Vraneš M, Zeininger L. Dynamic In Situ Monitoring of the Salt Counter-ion Effect on Surfactant Effectiveness Using Reconfigurable Janus Emulsions. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:2152-2160. [PMID: 36744990 DOI: 10.1021/acs.langmuir.2c02346] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
A straightforward method for visualization and quantification of surfactant effectiveness within different electrolyte environments based on using reconfigurable Janus emulsions as novel optical probes is reported. More specifically, we investigated the effect of different types and concentrations of salt counter-ions on the surfactant surface excess of commercial ionic and non-ionic surfactants, namely sodium dodecyl sulfate (SDS) and Tween 80 via in situ monitoring the morphological reconfigurations of biphasic Janus emulsions comprising hydrocarbon and fluorocarbon oils. We find that significant variations in interfacial tensions of SDS-stabilized interfaces (up to 15 mN·m-1) can be evoked by titrating mono-, di-, and trivalent cationic counter-ions, which is coherent with the lyotropic (Hofmeister) series. In contrast, the salt counter-ion effect on the surfactant effectiveness was less pronounced for the non-ionic surfactant Tween 80 (∼3 mN·m-1). Our results reveal a facile in situ method for monitoring the central role of electrolyte type and concentration on surfactant effectiveness and, more broadly, illustrate that Janus emulsions serve as powerful optical probes to dynamically study the properties of surfactants at liquid interfaces. We demonstrate the utility of our findings for an electro-induced morphological reconfiguration of Janus droplet morphologies by dynamically tuning Cu2+ concentration in solution using an electrode setup. The latter provides a unique platform for liquid-phase, real-time, and continuous tuning of Janus droplet morphologies, e.g., for their application in sensing and dynamic optical device platforms.
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Affiliation(s)
- Marko Pavlovic
- Department of Physics and John A. Paulson School of Engineering and Applied Sciences, Harvard University, 29 Oxford Street, Cambridge, Massachusetts02138, United States
- BioSense Institute, University of Novi Sad, Dr Zorana Djindjica 1, Novi Sad21000, Serbia
| | | | - Saveh Djalali
- Department of Colloid Chemistry, Max Planck Institute of Colloids & Interfaces, Am Muehlenberg 1, Potsdam14476, Germany
| | - Zoran Pavlovic
- BioSense Institute, University of Novi Sad, Dr Zorana Djindjica 1, Novi Sad21000, Serbia
| | - Milan Vraneš
- Faculty of Sciences, Department of Chemistry, Biochemistry and Environmental Protection, University of Novi Sad, Trg Dositeja Obradovića 3, Novi Sad21000, Serbia
| | - Lukas Zeininger
- Department of Colloid Chemistry, Max Planck Institute of Colloids & Interfaces, Am Muehlenberg 1, Potsdam14476, Germany
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10
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Jie Y, Chen F. Progress in the Application of Food-Grade Emulsions. Foods 2022; 11:foods11182883. [PMID: 36141011 PMCID: PMC9498284 DOI: 10.3390/foods11182883] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Revised: 09/07/2022] [Accepted: 09/13/2022] [Indexed: 11/16/2022] Open
Abstract
The detailed investigation of food-grade emulsions, which possess considerable structural and functional advantages, remains ongoing to enhance our understanding of these dispersion systems and to expand their application scope. This work reviews the applications of food-grade emulsions on the dispersed phase, interface structure, and macroscopic scales; further, it discusses the corresponding factors of influence, the selection and design of food dispersion systems, and the expansion of their application scope. Specifically, applications on the dispersed-phase scale mainly include delivery by soft matter carriers and auxiliary extraction/separation, while applications on the scale of the interface structure involve biphasic systems for enzymatic catalysis and systems that can influence substance digestion/absorption, washing, and disinfection. Future research on these scales should therefore focus on surface-active substances, real interface structure compositions, and the design of interface layers with antioxidant properties. By contrast, applications on the macroscopic scale mainly include the design of soft materials for structured food, in addition to various material applications and other emerging uses. In this case, future research should focus on the interactions between emulsion systems and food ingredients, the effects of food process engineering, safety, nutrition, and metabolism. Considering the ongoing research in this field, we believe that this review will be useful for researchers aiming to explore the applications of food-grade emulsions.
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11
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Demulsification of (W1+W2+W3)/O Reverse Cerberus Emulsion from Vibrational Emulsification. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.129623] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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12
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Shakya G, Fajrial AK, Ding X, Borden MA. Effect of Thermal History and Hydrocarbon Core Size on Perfluorocarbon Endoskeletal Droplet Vaporization. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:2634-2641. [PMID: 35175053 DOI: 10.1021/acs.langmuir.1c03350] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Vaporizable hydrocarbon-in-fluorocarbon endoskeletal droplets are a unique category of phase-change emulsions with interesting physical and thermodynamic features. Here, we show microfluidic fabrication of various morphologies, such as solid-in-liquid, liquid-in-solid, and Janus-type, of complex solid n-C20H42 or n-C21H44 and liquid n-C5F12 droplets. Furthermore, we investigated the vaporization behavior of these endoskeletal droplets, focusing on the effects of heat treatment and core size. Comparison of vaporization and differential scanning calorimetry results indicated that vaporization occurs prior to melting of the bulk hydrocarbon phase for C20H42/C5F10 droplets and near the rotator phase for C21H44/C5F10 droplets. We found that heat treatment of the droplets increased the fraction of droplets that vaporized and also increased the vaporization temperature of the droplets, although the effect was temporary. Furthermore, we found that changing the relative size of the solid hydrocarbon core compared to the surrounding liquid shell increased the vaporization temperature and the vaporizing fraction. Taken together, these data support the hypothesis that surface melting behavior exhibited by the linear alkane may trigger the fluorocarbon vaporization event. These results may aid in the understanding of the interfacial thermodynamics and transport and the engineering of novel vaporizable endoskeletal droplets for biomedical imaging and other applications.
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Affiliation(s)
- Gazendra Shakya
- Paul M. Rady Department of Mechanical Engineering, University of Colorado, Boulder, Colorado 80309, United States
| | - Apresio K Fajrial
- Paul M. Rady Department of Mechanical Engineering, University of Colorado, Boulder, Colorado 80309, United States
| | - Xiaoyun Ding
- Paul M. Rady Department of Mechanical Engineering, University of Colorado, Boulder, Colorado 80309, United States
- Biomedical Engineering Program, University of Colorado, Boulder, Colorado 80309, United States
| | - Mark A Borden
- Paul M. Rady Department of Mechanical Engineering, University of Colorado, Boulder, Colorado 80309, United States
- Biomedical Engineering Program, University of Colorado, Boulder, Colorado 80309, United States
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13
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Tanjeem N, Minnis MB, Hayward RC, Shields CW. Shape-Changing Particles: From Materials Design and Mechanisms to Implementation. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022; 34:e2105758. [PMID: 34741359 PMCID: PMC9579005 DOI: 10.1002/adma.202105758] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2021] [Revised: 09/06/2021] [Indexed: 05/05/2023]
Abstract
Demands for next-generation soft and responsive materials have sparked recent interest in the development of shape-changing particles and particle assemblies. Over the last two decades, a variety of mechanisms that drive shape change have been explored and integrated into particulate systems. Through a combination of top-down fabrication and bottom-up synthesis techniques, shape-morphing capabilities extend from the microscale to the nanoscale. Consequently, shape-morphing particles are rapidly emerging in a variety of contexts, including photonics, microfluidics, microrobotics, and biomedicine. Herein, the key mechanisms and materials that facilitate shape changes of microscale and nanoscale particles are discussed. Recent progress in the applications made possible by these particles is summarized, and perspectives on their promise and key open challenges in the field are discussed.
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Affiliation(s)
- Nabila Tanjeem
- Department of Chemical & Biological Engineering, University of Colorado, Boulder, 3415 Colorado Avenue, Boulder, CO, 80303, USA
| | - Montana B Minnis
- Department of Chemical & Biological Engineering, University of Colorado, Boulder, 3415 Colorado Avenue, Boulder, CO, 80303, USA
| | - Ryan C Hayward
- Department of Chemical & Biological Engineering, University of Colorado, Boulder, 3415 Colorado Avenue, Boulder, CO, 80303, USA
| | - Charles Wyatt Shields
- Department of Chemical & Biological Engineering, University of Colorado, Boulder, 3415 Colorado Avenue, Boulder, CO, 80303, USA
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14
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Wang Y, Zheng Y, Zhao K, Wu S, Ju B, Zhang S, Niu W. Magnetoresponsive Photonic Micromotors and Wireless Sensing Microdevices Based on Robust Magnetic Photonic Microspheres. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.1c03981] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yunpeng Wang
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, West Campus, 2 Linggong Rd., Dalian 116024, China
| | - Yu Zheng
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, West Campus, 2 Linggong Rd., Dalian 116024, China
| | - Kai Zhao
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, West Campus, 2 Linggong Rd., Dalian 116024, China
| | - Suli Wu
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, West Campus, 2 Linggong Rd., Dalian 116024, China
| | - Benzhi Ju
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, West Campus, 2 Linggong Rd., Dalian 116024, China
| | - Shufen Zhang
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, West Campus, 2 Linggong Rd., Dalian 116024, China
| | - Wenbin Niu
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, West Campus, 2 Linggong Rd., Dalian 116024, China
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15
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Zhang J, Chen B, Chen X, Hou X. Liquid-Based Adaptive Structural Materials. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2005664. [PMID: 33834566 DOI: 10.1002/adma.202005664] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/20/2020] [Revised: 02/08/2021] [Indexed: 06/12/2023]
Abstract
Structural materials are used to provide stable mechanical architectures and transmit or support forces, and they play an important role in materials science and technology. During the long process of the exploitation of structural materials, the functionality of structural materials has gained prominence. Adaptive structures responding to external stimuli have come to the fore with significant advantages in structural materials. However, many solid adaptive structural materials still suffer from their single function and the lack of dynamic performance, such as issue around fouling and energy consumption, defects present everywhere in materials at the microscale, etc. To meet the increasing demands, more and more researchers have started turning their attention to liquid-based materials owing to their intrinsic spontaneous, dynamic, and functional properties. Liquid-based adaptive structural materials (LASMs) have been proposed and developed. Building upon both dynamic liquids and fixed solids, LASMs have been demonstrated to possess both dynamic adaptivity (from the active liquid part) and stable mechanical structure (from the fixed solid part), which are desired in many applications such as 3D printing, droplet manipulation, omniphobic surfaces, microfluidics, mass separation, etc. A unifying view of the recent progress of LASMs is presented, including liquid with particles, liquid with surfaces, as well as liquid with membranes. In addition, the discussion of the prospects and challenges are provided for promoting the development of LASMs.
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Affiliation(s)
- Jian Zhang
- State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Baiyi Chen
- State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
- College of Materials, Xiamen University, Xiamen, 361005, China
| | - Xinyu Chen
- State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Xu Hou
- State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
- College of Materials, Xiamen University, Xiamen, 361005, China
- Research Institute for Biomimetics and Soft Matter, Fujian Provincial Key Laboratory for Soft Functional Materials Research, Jiujiang Research Institute, College of Physical Science and Technology, Xiamen University, Xiamen, 361005, China
- Tan Kah Kee Innovation Laboratory, Xiamen, Fujian, 361102, China
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16
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Yang S, Qin W, He F, Zhao X, Zhou Q, Lin F, Gong H, Zhang S, Yu G, Feng Y, Li J. Tuning Supramolecular Polymers' Amphiphilicity via Host-Guest Interfacial Recognition for Stabilizing Multiple Pickering Emulsions. ACS APPLIED MATERIALS & INTERFACES 2021; 13:51661-51672. [PMID: 34696581 DOI: 10.1021/acsami.1c13715] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Supramolecular host-guest chemistry bridging the adjustable amphiphilicity and macromolecular self-assembly is well advanced in aqueous media. However, the interfacial self-assembled behaviors have not been further exploited. Herein, we designed a β-cyclodextrin-grafted alginate/azobenzene-functionalized dodecyl (Alg-β-CD/AzoC12) supra-amphiphilic system that possessed tunable amphiphilicity by host-guest interfacial self-assembly. Especially, supra-amphiphilic aggregates could be utilized as highly efficient soft colloidal emulsifiers for stabilizing water-in-oil-water (W/O/W) Pickering emulsions due to the excellent interfacial activity. Meanwhile, the assembled particle structures could be modulated by adjusting the oil-water ratio, resulting from the tunable aggregation behavior of supra-amphiphilic macromolecules. Additionally, the interfacial adsorption films could be partially destroyed/reconstructed upon ultraviolet/visible irradiation due to the stimuli-altering balance of amphiphilicity of Alg-β-CD/AzoC12 polymers, further constructing the stimulus-responsive Pickering emulsions. Therefore, the supramolecular interfacial self-assembly-mediated approach not only technologically advances the continued development of creative templates to construct multifunctional soft materials with anisotropic structures but also serves as a creative bridge between supramolecular host-guest chemistry, colloidal interface science, and soft material technology.
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Affiliation(s)
- Shujuan Yang
- Key Laboratory of Advanced Materials of Tropical Island Resources, Ministry of Education, College of Chemical Engineering and Technology, Hainan University, 58 Renmin Road, Haikou 570228, Hainan, China
| | - Wenqi Qin
- Key Laboratory of Advanced Materials of Tropical Island Resources, Ministry of Education, College of Chemical Engineering and Technology, Hainan University, 58 Renmin Road, Haikou 570228, Hainan, China
| | - Furui He
- Key Laboratory of Advanced Materials of Tropical Island Resources, Ministry of Education, College of Chemical Engineering and Technology, Hainan University, 58 Renmin Road, Haikou 570228, Hainan, China
| | - Xinyu Zhao
- Key Laboratory of Advanced Materials of Tropical Island Resources, Ministry of Education, College of Chemical Engineering and Technology, Hainan University, 58 Renmin Road, Haikou 570228, Hainan, China
| | - Qichang Zhou
- Key Laboratory of Advanced Materials of Tropical Island Resources, Ministry of Education, College of Chemical Engineering and Technology, Hainan University, 58 Renmin Road, Haikou 570228, Hainan, China
| | - Feilin Lin
- Key Laboratory of Advanced Materials of Tropical Island Resources, Ministry of Education, College of Chemical Engineering and Technology, Hainan University, 58 Renmin Road, Haikou 570228, Hainan, China
| | - Houkui Gong
- Key Laboratory of Advanced Materials of Tropical Island Resources, Ministry of Education, College of Chemical Engineering and Technology, Hainan University, 58 Renmin Road, Haikou 570228, Hainan, China
| | - Siqi Zhang
- Key Laboratory of Advanced Materials of Tropical Island Resources, Ministry of Education, College of Chemical Engineering and Technology, Hainan University, 58 Renmin Road, Haikou 570228, Hainan, China
| | - Gaobo Yu
- Key Laboratory of Advanced Materials of Tropical Island Resources, Ministry of Education, College of Chemical Engineering and Technology, Hainan University, 58 Renmin Road, Haikou 570228, Hainan, China
| | - Yuhong Feng
- Key Laboratory of Advanced Materials of Tropical Island Resources, Ministry of Education, College of Chemical Engineering and Technology, Hainan University, 58 Renmin Road, Haikou 570228, Hainan, China
| | - Jiacheng Li
- Key Laboratory of Advanced Materials of Tropical Island Resources, Ministry of Education, College of Chemical Engineering and Technology, Hainan University, 58 Renmin Road, Haikou 570228, Hainan, China
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17
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Bai X, Wang Y, Li H, Tian X, Ma Y, Pan J. Stalagmites in karst cave inspired construction: lotus root-type adsorbent with porous surface derived from CO 2-in-water Pickering emulsion for selective and ultrafast uranium extraction. JOURNAL OF HAZARDOUS MATERIALS 2021; 419:126398. [PMID: 34175700 DOI: 10.1016/j.jhazmat.2021.126398] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2021] [Revised: 05/24/2021] [Accepted: 06/10/2021] [Indexed: 06/13/2023]
Abstract
Simultaneous construction of porous and hollow adsorbent, especially from gas-in-water Pickering emulsion (PE) reactor, is vital for improving mass transfer kinetics and uptake amount. Inspired by the formation process of stalagmites in karst cave, amino and amidoxime bifunctionalized lotus root-type microsphere with porous surface (NH2@AO-PLRMS) is prepared by the silica nanoparticles (SPs)-stabilized CO2-in-water Pickering emulsion reactor and subsequent two-step grafting polymerization. The important roles of SPs acting as Pickering emulsifier, surface pore-forming agent, and adjusting internal lotus root structure are confirmed. Lotus root-type pores are dependent on the interface intensity and the permeability for compressed CO2 bubbles in PE droplets. Benefitting from the lotus root-type structure and abundant affinity sites, the maximum uranium adsorption capacity of NH2@AO-PLRMS is 1214.5 mg·g-1 at 298 k, and an ultrafast uptake process can be achieved in the first 30 min. Both thermodynamic and kinetic studies indicate a spontaneous, entropy increased, and exothermic chemisorption process, and the synergies of amidoxime and amino groups can enhance the adsorption selectivity. Remarkably, NH2@AO-PLRMS displays a high uranium adsorption capacity and desorption efficiency after seven cycles. These findings provide a way to obtain adsorbents with enhanced uranium extraction performance from gas-in-water PE reactor.
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Affiliation(s)
- Xue Bai
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Yi Wang
- State Key Laboratory of NBC Protection for Civilian, Beijing 102205, China
| | - Hao Li
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Xiaohua Tian
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Yue Ma
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Jianming Pan
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China.
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18
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Ngo QP, He M, Concellón A, Yoshinaga K, Luo SXL, Aljabri N, Swager TM. Reconfigurable Pickering Emulsions with Functionalized Carbon Nanotubes. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:8204-8211. [PMID: 34190561 DOI: 10.1021/acs.langmuir.1c00904] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Pickering emulsions (PEs) achieve interfacial stabilization by colloidal particle surfactants and are commonly used in food, cosmetics, and pharmaceuticals. Carbon nanotubes (CNTs) have recently been used as stabilizing materials to create dynamic single emulsions. In this study, we used the formation of Meisenheimer complexes on functionalized CNTs to fabricate complex biphasic emulsions containing hydrocarbons (HCs) and fluorocarbons (FCs). The reversible nature of Meisenheimer complex formation allows for further functionalization at the droplet-water interface. The strong affinity of fluorofluorescent perylene bisimide (F-PBI) to the CNTs was used to enhance the assembly of CNTs on the FC-water interface. The combination of different concentrations of the functionalized CNTs and the pelene additive enables predictable complex emulsion morphologies. Reversible morphology reconfiguration was explored with the addition of molecular surfactants. Our results show that the interfacial properties of functionalized CNTs have considerable utility in the fabrication of complex dynamic emulsions.
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Affiliation(s)
- Quynh P Ngo
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Maggie He
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
- Department of Chemistry and Biochemistry, University of Arkansas, Fayetteville, Arkansas 72701, United States
| | - Alberto Concellón
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Kosuke Yoshinaga
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Shao-Xiong Lennon Luo
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Nouf Aljabri
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
- Exploration Advanced Research Center (EXPEC ARC), Saudi Aramco, Dhahran 31311, Saudi Arabia
| | - Timothy M Swager
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
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19
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Qin XS, Gao QY, Luo ZG. Enhancing the storage and gastrointestinal passage viability of probiotic powder (Lactobacillus Plantarum) through encapsulation with pickering high internal phase emulsions stabilized with WPI-EGCG covalent conjugate nanoparticles. Food Hydrocoll 2021. [DOI: 10.1016/j.foodhyd.2021.106658] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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20
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Abstract
Dispersions of magnetic nanoparticles (MNPs) can exhibit paramagnetic ferrofluid or ferromagnetic liquid behavior. By modifying the surface functionality of MNPs, ferrofluids have been used to fabricate novel magnetically actuated devices. If the surface-functionalized MNPs interact with complementary ligands at a fluid-fluid interface, MNP surfactants form and in situ assemble at the interface. When jammed interfacially, MNP surfactants give rise to ferromagnetic behavior of the liquid (droplet), which is endowed with permanent magnetic dipoles while maintaining all of the characteristics of a fluid system. Here, we give a brief overview of the developments in the dispersion of MNPs in liquids from ferrofluids to ferromagnetic liquid droplets, their responses to external fields, and the manipulation of these responses for end uses. The reversible room-temperature para-to-ferro transformation of magnetic liquids is highlighted. We discuss challenges in the synthesis and characterization of these unusual liquids along with potential technological applications.
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Affiliation(s)
- Xubo Liu
- CAS Key Laboratory of Bio-Inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Ye Tian
- CAS Key Laboratory of Bio-Inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- School of Future Technology, University of Chinese Academy of Sciences, Beijing 101407, China
| | - Lei Jiang
- CAS Key Laboratory of Bio-Inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- School of Future Technology, University of Chinese Academy of Sciences, Beijing 101407, China
- Key Laboratory of Bio-inspired Smart Interfacial Science and Technology of Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Chemistry, Beihang University, Beijing 100191, China
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21
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Ku KH, McDonald BR, Vijayamohanan H, Zentner CA, Nagelberg S, Kolle M, Swager TM. Dynamic Coloration of Complex Emulsions by Localization of Gold Rings Near the Triphase Junction. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2021; 17:e2007507. [PMID: 33605015 DOI: 10.1002/smll.202007507] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2020] [Revised: 01/06/2021] [Indexed: 06/12/2023]
Abstract
Multiphase microscale emulsions are a material platform that can be tuned and dynamically configured by a variety of chemical and physical phenomena, rendering them inexpensive and broadly programmable optical transducers. Interface engineering underpins many of these sensing schemes but typically focuses on manipulating a single interface, while engineering of the multiphase junctions of complex emulsions remains underexplored. Herein, multiphilic triblock copolymer surfactants are synthesized and assembled at the triphase junction of a dynamically reconfigurable biphasic emulsion. Tailoring the linear structure and composition of the polymer surfactants provides affinity to each phase of the complex emulsion (hydrocarbon, fluorocarbon, and continuous water phase), yielding selective localization of polymers around the triphase junction. Conjugation of these polymers with gold nanoparticles, forming structured rings, affords a dynamic reflected isotropic structural color that tracks with emulsion morphology, demonstrating the uniquely enabling nature of a functionalized triphase interface. This color is the result of interference of light along the internal hydrocarbon/fluorocarbon interface, with the gold nanoparticles scattering and redirecting light into total internal reflection competent paths. Thus, the functionalization of the triphase junction renders complex emulsions colorimetric sensors, a powerful tool toward sensitive and simple sensing platforms.
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Affiliation(s)
- Kang Hee Ku
- Department of Chemistry, Massachusetts Institute of Technology (MIT), 77 Massachusetts Ave., Cambridge, MA, 02139, USA
- Department of Chemical Engineering and Applied Chemistry, Chungnam National University, Daejeon, 34134, Republic of Korea
| | - Benjamin R McDonald
- Department of Chemistry, Massachusetts Institute of Technology (MIT), 77 Massachusetts Ave., Cambridge, MA, 02139, USA
| | - Harikrishnan Vijayamohanan
- Department of Chemistry, Massachusetts Institute of Technology (MIT), 77 Massachusetts Ave., Cambridge, MA, 02139, USA
| | - Cassandra A Zentner
- Department of Chemistry, Massachusetts Institute of Technology (MIT), 77 Massachusetts Ave., Cambridge, MA, 02139, USA
| | - Sara Nagelberg
- Department of Mechanical Engineering, Massachusetts Institute of Technology (MIT), 77 Massachusetts Ave., Cambridge, MA, 02139, USA
| | - Mathias Kolle
- Department of Mechanical Engineering, Massachusetts Institute of Technology (MIT), 77 Massachusetts Ave., Cambridge, MA, 02139, USA
| | - Timothy M Swager
- Department of Chemistry, Massachusetts Institute of Technology (MIT), 77 Massachusetts Ave., Cambridge, MA, 02139, USA
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22
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Balaj RV, Zarzar LD. Reconfigurable complex emulsions: Design, properties, and applications. ACTA ACUST UNITED AC 2020. [DOI: 10.1063/5.0028606] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Rebecca V. Balaj
- Department of Chemistry, The Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - Lauren D. Zarzar
- Department of Chemistry, The Pennsylvania State University, University Park, Pennsylvania 16802, USA
- Department of Materials Science and Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, USA
- Materials Research Institute, The Pennsylvania State University, University Park, Pennsylvania 16802, USA
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23
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Jin H, Ge L, Li X, Guo R. Destabilization mechanism of (W 1+W 2)/O reverse Janus emulsions. J Colloid Interface Sci 2020; 585:205-216. [PMID: 33285459 DOI: 10.1016/j.jcis.2020.11.062] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Revised: 11/14/2020] [Accepted: 11/16/2020] [Indexed: 12/01/2022]
Abstract
HYPOTHESIS Reverse Janus emulsion, with droplets composed by "two rooms" of water phases, is a novel multiple emulsion attributed to excellent integration capability and biocompatibility. However, significant instability compared with normal Janus emulsions renders the stability issue of great importance. Moreover, the ultra-low aqueous-aqueous inner interfacial tension, the anisotropic nature of the droplets with distinct lobe composition, and the random orientation in the continuous phase endow the complicated and various demulsification mechanisms. EXPERIMENTS Reverse Janus emulsion of (W1+W2)/O, employing typical salt-alcohol aqueous two-phase system (ATPS) as inner phases, is prepared in batch scale by conventional one-step vortex mixing. The demulsification process is detected by multiple light scattering technique, which provides real-time, in-situ, and quantitative information of emulsion evolution. Moreover, the fusion pattern of the anisotropic droplets is illustrated by the combination with light microscopy and size distribution measurement. FINDINGS Coalescence and sedimentation are found to be two main demulsification processes. Two salt "body" lobes of the "snowman" shaped Janus droplets combine first resulting in an intermediate Cerberus topology with two alcohol "heads" on one salt "body". Subsequently, two "head" lobes coalesce resulting in a larger Janus droplet. Ultimately, the Gibbs free energy leads to a final state with three separated liquids. In addition, the variation in lobe viscosity, density, and properties of interfacial film greatly affect the demulsification rate and fusion pattern. A critical alcohol/surfactant mass ratio of 2 is found, beyond which a completely different fusion pattern occurs. Two alcohol "body" lobes combine first resulting in an intermediate Cerberus topology with two salt "heads" on one alcohol "body". Subsequently, two "head" lobes coalesce resulting in a larger Janus droplet. The findings are instructive in the stability of aqueous based multiple emulsions with advanced morphologies and meanwhile, promote the future application of this novel emulsion in food science, pharmacy, and biomimetic compartmentalization.
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Affiliation(s)
- Haimei Jin
- School of Chemistry and Chemical Engineering, Yangzhou University, Jiangsu Province, China
| | - Lingling Ge
- School of Chemistry and Chemical Engineering, Yangzhou University, Jiangsu Province, China.
| | - Xia Li
- School of Chemistry and Chemical Engineering, Yangzhou University, Jiangsu Province, China
| | - Rong Guo
- School of Chemistry and Chemical Engineering, Yangzhou University, Jiangsu Province, China.
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24
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Zentner C, Concellón A, Swager TM. Controlled Movement of Complex Double Emulsions via Interfacially Confined Magnetic Nanoparticles. ACS CENTRAL SCIENCE 2020; 6:1460-1466. [PMID: 32875087 PMCID: PMC7453569 DOI: 10.1021/acscentsci.0c00686] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Indexed: 05/03/2023]
Abstract
Controlled, dynamic movement of materials through noncontacting forces provides interesting opportunities in systems design. Confinement of magnetic nanoparticles to the interfaces of double emulsions introduces exceptional control of double emulsion movement. We report the selective magnetic functionalization of emulsions by the in situ selective reactions of amine-functionalized magnetic nanoparticles and oil-soluble aldehydes at only one of the double emulsion's interfaces. We demonstrate morphology-dependent macroscopic ferromagnetic behavior of emulsions induced by the interfacial confinement of the magnetic nanoparticles. The attraction and repulsion of the emulsions to applied magnetic fields results in controlled orientation changes and rotational movement. Furthermore, incorporation of liquid crystals into the double emulsions adds additional templating capabilities for precision assembly of magnetic nanoparticles, both along the interface and at point defects. Applying a magnetic field to liquid crystal complex emulsions can produce movement as well as reorganization of the director field in the droplets. The combination of interfacial chemistry and precise assembly of magnetic particles creates new systems with potentially useful field-responsive properties.
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25
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Cheon SI, Batista Capaverde Silva L, Ditzler R, Zarzar LD. Particle Stabilization of Oil-Fluorocarbon Interfaces and Effects on Multiphase Oil-in-Water Complex Emulsion Morphology and Reconfigurability. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:7083-7090. [PMID: 31991080 DOI: 10.1021/acs.langmuir.9b03830] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Stabilization of oil-oil interfaces is important for nonaqueous emulsions as well as for multiphase oil-in-water emulsions, with relevance to a variety of fields ranging from emulsion polymerization to sensors and optics. Here, we focus on examining the ability of functionalized silica particles to stabilize interfaces between fluorinated oils and other immiscible oils (such as hydrocarbons and silicones) in nonaqueous emulsions and also on the particles' ability to affect the morphology and reconfigurability of complex, biphasic oil-in-water emulsions. We compare the effectiveness of fluorophilic, lipophilic, and bifunctional fluorophilic-lipophilic coated nanoparticles to stabilize these oil-oil interfaces. Sequential bulk emulsification steps by vortex mixing, or emulsification by microfluidics, can be used to create complex droplets in which particles stabilize the oil-oil interfaces and surfactants stabilize the oil-water interfaces. We examine the influence of particles adsorbed at the internal oil-oil interface in complex droplets to hinder the reconfiguration of these complex emulsions upon addition of aqueous surfactants, creating "metastable" droplets that resist changes in morphology. Such metastable droplets can be triggered to reconfigure when heated above their upper critical solution temperature. Thus, not only do these bifunctional silica particles enable the stabilization of a broad array of oil-fluorocarbon nonaqueous emulsions, but the ability to address the oil-oil interface within complex O/O/W droplets expands the diversity of oil chemical choices available and the accessibility of droplet morphologies and sensitivity.
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Affiliation(s)
- Seong Ik Cheon
- Department of Chemistry, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Leonardo Batista Capaverde Silva
- Department of Materials Science and Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Rachael Ditzler
- Department of Chemistry, Seton Hill University, Greensburg, Pennsylvania 15601, United States
| | - Lauren D Zarzar
- Department of Chemistry, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
- Department of Materials Science and Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
- Materials Research Institute, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
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26
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Sun Z, Yang C, Wang F, Wu B, Shao B, Li Z, Chen D, Yang Z, Liu K. Biocompatible and pH‐Responsive Colloidal Surfactants with Tunable Shape for Controlled Interfacial Curvature. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202001588] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Zhu Sun
- Institute of Process EquipmentCollege of Energy EngineeringZhejiang University Hangzhou 310027 China
| | - Chenjing Yang
- Institute of Process EquipmentCollege of Energy EngineeringZhejiang University Hangzhou 310027 China
| | - Fan Wang
- State Key Laboratory of Rare Earth Resource UtilizationChangchun Institute of Applied ChemistryChinese Academy of Sciences Changchun 130022 China
| | - Baiheng Wu
- Institute of Process EquipmentCollege of Energy EngineeringZhejiang University Hangzhou 310027 China
- State Key Laboratory of Fluid Power and Mechatronic SystemsZhejiang University Hangzhou 310027 China
| | - Baiqi Shao
- State Key Laboratory of Rare Earth Resource UtilizationChangchun Institute of Applied ChemistryChinese Academy of Sciences Changchun 130022 China
| | - Zhuocheng Li
- Institute of Process EquipmentCollege of Energy EngineeringZhejiang University Hangzhou 310027 China
- Department of Chemical EngineeringTsinghua University Beijing 100084 China
| | - Dong Chen
- Institute of Process EquipmentCollege of Energy EngineeringZhejiang University Hangzhou 310027 China
- State Key Laboratory of Fluid Power and Mechatronic SystemsZhejiang University Hangzhou 310027 China
| | - Zhenzhong Yang
- Department of Chemical EngineeringTsinghua University Beijing 100084 China
| | - Kai Liu
- State Key Laboratory of Rare Earth Resource UtilizationChangchun Institute of Applied ChemistryChinese Academy of Sciences Changchun 130022 China
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27
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Sun Z, Yang C, Wang F, Wu B, Shao B, Li Z, Chen D, Yang Z, Liu K. Biocompatible and pH‐Responsive Colloidal Surfactants with Tunable Shape for Controlled Interfacial Curvature. Angew Chem Int Ed Engl 2020; 59:9365-9369. [DOI: 10.1002/anie.202001588] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Indexed: 12/12/2022]
Affiliation(s)
- Zhu Sun
- Institute of Process EquipmentCollege of Energy EngineeringZhejiang University Hangzhou 310027 China
| | - Chenjing Yang
- Institute of Process EquipmentCollege of Energy EngineeringZhejiang University Hangzhou 310027 China
| | - Fan Wang
- State Key Laboratory of Rare Earth Resource UtilizationChangchun Institute of Applied ChemistryChinese Academy of Sciences Changchun 130022 China
| | - Baiheng Wu
- Institute of Process EquipmentCollege of Energy EngineeringZhejiang University Hangzhou 310027 China
- State Key Laboratory of Fluid Power and Mechatronic SystemsZhejiang University Hangzhou 310027 China
| | - Baiqi Shao
- State Key Laboratory of Rare Earth Resource UtilizationChangchun Institute of Applied ChemistryChinese Academy of Sciences Changchun 130022 China
| | - Zhuocheng Li
- Institute of Process EquipmentCollege of Energy EngineeringZhejiang University Hangzhou 310027 China
- Department of Chemical EngineeringTsinghua University Beijing 100084 China
| | - Dong Chen
- Institute of Process EquipmentCollege of Energy EngineeringZhejiang University Hangzhou 310027 China
- State Key Laboratory of Fluid Power and Mechatronic SystemsZhejiang University Hangzhou 310027 China
| | - Zhenzhong Yang
- Department of Chemical EngineeringTsinghua University Beijing 100084 China
| | - Kai Liu
- State Key Laboratory of Rare Earth Resource UtilizationChangchun Institute of Applied ChemistryChinese Academy of Sciences Changchun 130022 China
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