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Mu Y, Duan W, Dai Y, Sullivan PA, Deravi LF, Wang Y, Lee D. Colloidal synthesis of metallodielectric Janus matchsticks. Chem Commun (Camb) 2024; 60:5534-5537. [PMID: 38695749 DOI: 10.1039/d4cc00488d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/22/2024]
Abstract
We present a gram-scale synthesis of metallodielectric Janus matchsticks, which feature a gold-coated silica sphere and a silica rod. SiO2 Janus matchsticks are synthesized in one batch by growing amine-functionalized SiO2 spheres at the end of SiO2 rods. Gold deposition on the spheres produces Au-SiO2 Janus matchsticks with an aspect ratio controlled by the rod length. The metallodielectric Janus matchsticks, produced by scalable colloidal synthesis, hold great potential as functional colloidal materials.
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Affiliation(s)
- Yijiang Mu
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, Pennsylvania, 19104, USA.
| | - Wendi Duan
- Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Yuxuan Dai
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, Pennsylvania, 19104, USA.
| | - Patrick A Sullivan
- Department of Chemistry and Chemical Biology, Northeastern University, Boston, MA 02115, USA
| | - Leila F Deravi
- Department of Chemistry and Chemical Biology, Northeastern University, Boston, MA 02115, USA
| | - Yufeng Wang
- Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Daeyeon Lee
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, Pennsylvania, 19104, USA.
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2
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Kudryavtseva V, Sukhorukov GB. Features of Anisotropic Drug Delivery Systems. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2307675. [PMID: 38158786 DOI: 10.1002/adma.202307675] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 12/17/2023] [Indexed: 01/03/2024]
Abstract
Natural materials are anisotropic. Delivery systems occurring in nature, such as viruses, blood cells, pollen, and many others, do have anisotropy, while delivery systems made artificially are mostly isotropic. There is apparent complexity in engineering anisotropic particles or capsules with micron and submicron sizes. Nevertheless, some promising examples of how to fabricate particles with anisotropic shapes or having anisotropic chemical and/or physical properties are developed. Anisotropy of particles, once they face biological systems, influences their behavior. Internalization by the cells, flow in the bloodstream, biodistribution over organs and tissues, directed release, and toxicity of particles regardless of the same chemistry are all reported to be factors of anisotropy of delivery systems. Here, the current methods are reviewed to introduce anisotropy to particles or capsules, including loading with various therapeutic cargo, variable physical properties primarily by anisotropic magnetic properties, controlling directional motion, and making Janus particles. The advantages of combining different anisotropy in one entity for delivery and common problems and limitations for fabrication are under discussion.
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Affiliation(s)
- Valeriya Kudryavtseva
- School of Engineering and Materials Science, Queen Mary University of London, London, E1 4NS, UK
| | - Gleb B Sukhorukov
- School of Engineering and Materials Science, Queen Mary University of London, London, E1 4NS, UK
- Skolkovo Institute of Science and Technology, Moscow, 121205, Russia
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3
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Anisur Rahman M, Turner T, Hamilton HSC, Bradley LC, Beltramo PJ. Engineering the surface patchiness and topography of polystyrene colloids: From spheres to ellipsoids. J Colloid Interface Sci 2023; 652:82-94. [PMID: 37591086 DOI: 10.1016/j.jcis.2023.08.083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Revised: 07/21/2023] [Accepted: 08/11/2023] [Indexed: 08/19/2023]
Abstract
HYPOTHESIS Colloidal surface morphology determines suspension properties and applications. While existing methods are effective at generating specific features on spherical particles, an approach extending this to non-spherical particles is currently missing. Synthesizing un-crosslinked polymer microspheres with controlled chemical patchiness would allow subsequent thermomechanical stretching to translate surface topographical features to ellipsoidal particles. EXPERIMENTS A systematic study using seeded emulsion polymerization to create polystyrene (PS) microspheres with controlled surface patches of poly(tert-butyl acrylate) (PtBA) was performed with different polymerization parameters such as concentration of tBA monomer, co-swelling agent, and initiator. Thermomechanical stretching converted seed spheres to microellipsoids. Acid catalyzed hydrolysis (ACH) was performed to remove the patch domains. Roughness was characterized before and after ACH using atomic force microscopy. FINDINGS PS spheres with controlled chemical patchiness were synthesized. A balance between two factors, domain coalescence from reduced viscosity and domain growth via monomer absorption, dictates the final PtBA) patch features. ACH mediated removal of patch domains produced either golf ball-like porous particles or multicavity particles, depending on the size of the precursor patches. Patchy microspheres were successfully stretched into microellipsoids while retaining their surface characteristics. Particle roughness is governed by the patch geometry and increases after ACH. Overall, this study provides a facile yet controllable platform for creating colloids with highly adjustable surface patterns.
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Affiliation(s)
- Md Anisur Rahman
- Department of Chemical Engineering, University of Massachusetts Amherst, Amherst, MA 01003, USA
| | - Taina Turner
- Department of Chemical Engineering, University of Massachusetts Amherst, Amherst, MA 01003, USA
| | - Heather S C Hamilton
- Department of Polymer Science & Engineering, University of Massachusetts Amherst, Amherst, Massachusetts 01003, USA
| | - Laura C Bradley
- Department of Polymer Science & Engineering, University of Massachusetts Amherst, Amherst, Massachusetts 01003, USA
| | - Peter J Beltramo
- Department of Chemical Engineering, University of Massachusetts Amherst, Amherst, MA 01003, USA.
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4
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Lu Y, Wu Y, Tang Z, Hou Y, Cui M, Huang S, Long B, Yu Z, Iqbal MZ, Kong X. Synthesis of Multifunctional Mn 3O 4-Ag 2S Janus Nanoparticles for Enhanced T 1-Magnetic Resonance Imaging and Photo-Induced Tumor Therapy. SENSORS (BASEL, SWITZERLAND) 2023; 23:8930. [PMID: 37960633 PMCID: PMC10647565 DOI: 10.3390/s23218930] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Revised: 10/26/2023] [Accepted: 10/30/2023] [Indexed: 11/15/2023]
Abstract
The global burden of cancer is increasing rapidly, and nanomedicine offers promising prospects for enhancing the life expectancy of cancer patients. Janus nanoparticles (JNPs) have garnered considerable attention due to their asymmetric geometry, enabling multifunctionality in drug delivery and theranostics. However, achieving precise control over the self-assembly of JNPs in solution at the nanoscale level poses significant challenges. Herein, a low-temperature reversed-phase microemulsion system was used to obtain homogenous Mn3O4-Ag2S JNPs, which showed significant potential in cancer theranostics. Structural characterization revealed that the Ag2S (5-10 nm) part was uniformly deposited on a specific surface of Mn3O4 to form a Mn3O4-Ag2S Janus morphology. Compared to the single-component Mn3O4 and Ag2S particles, the fabricated Mn3O4-Ag2S JNPs exhibited satisfactory biocompatibility and therapeutic performance. Novel diagnostic and therapeutic nanoplatforms can be guided using the magnetic component in JNPs, which is revealed as an excellent T1 contrast enhancement agent in magnetic resonance imaging (MRI) with multiple functions, such as photo-induced regulation of the tumor microenvironment via producing reactive oxygen species and second near-infrared region (NIR-II) photothermal excitation for in vitro tumor-killing effects. The prime antibacterial and promising theranostics results demonstrate the extensive potential of the designed photo-responsive Mn3O4-Ag2S JNPs for biomedical applications.
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Affiliation(s)
- Yuguang Lu
- Institute of Smart Biomedical Materials, School of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Yuling Wu
- Institute of Smart Biomedical Materials, School of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Zhe Tang
- Institute of Smart Biomedical Materials, School of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Yike Hou
- Institute of Smart Biomedical Materials, School of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Mingyue Cui
- Institute of Smart Biomedical Materials, School of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Shuqi Huang
- Institute of Smart Biomedical Materials, School of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Binghua Long
- Institute of Smart Biomedical Materials, School of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Zhangsen Yu
- Laboratory of Nanomedicine, Medical Science Research Center, School of Medicine, Shaoxing University, Shaoxing 312000, China;
| | - Muhammad Zubair Iqbal
- Institute of Smart Biomedical Materials, School of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Xiangdong Kong
- Institute of Smart Biomedical Materials, School of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, China
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Russo G, Lattuada M. Preparation of Non-Spherical Janus Particles via an Orthogonal Dissolution Approach. Macromol Rapid Commun 2023; 44:e2300415. [PMID: 37722703 DOI: 10.1002/marc.202300415] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Revised: 09/15/2023] [Indexed: 09/20/2023]
Abstract
Post-synthesis modifications are valuable tools to alter functionalities and induce morphology changes in colloidal particles. Non-spherical polymer particles with Janus characteristics are prepared by combining seeded growth polymerization and selective dissolution. First, spherical polystyrene (PS) particles have been swollen with methyl methacrylate (MMA) with an activated swelling method. This is followed by polymerization that led to particles with two well-separated faces: one made of PS and the second of polymethyl methacrylate (PMMA). Subsequently, non-spherical particles are obtained by exposing the Janus colloids to various solvents. Using the two polymers' orthogonal solubility, solvents are identified to selectively dissolve only one face, leading to hemispherical PS or PMMA particles. It is further investigated how changing the composition of the PMMA face - by either co-polymerization with glycidyl methacrylate or by adding a cross-linker - affects the particles' morphology. The poly-methacrylate face can gain total or partial resistance towards the solvents, resulting in intriguing shapes, such as mushroom-like and Janus dimpled particles. The dissolution mechanisms are investigated via optical microscopy, where total or partial dissolutions can be directly observed. Lastly, prematurely quenching the dissolution of the particle's lobes with water can be used to control the Janus mushroom-like particle aspect ratio.
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Affiliation(s)
- Giovanni Russo
- Department of Chemistry, University of Fribourg, Chemin du Musée 9, Fribourg, 1700, Switzerland
| | - Marco Lattuada
- Department of Chemistry, University of Fribourg, Chemin du Musée 9, Fribourg, 1700, Switzerland
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6
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Development of Janus Particles as Potential Drug Delivery Systems for Diabetes Treatment and Antimicrobial Applications. Pharmaceutics 2023; 15:pharmaceutics15020423. [PMID: 36839746 PMCID: PMC9967574 DOI: 10.3390/pharmaceutics15020423] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Revised: 01/12/2023] [Accepted: 01/24/2023] [Indexed: 02/03/2023] Open
Abstract
Janus particles have emerged as a novel and smart material that could improve pharmaceutical formulation, drug delivery, and theranostics. Janus particles have two distinct compartments that differ in functionality, physicochemical properties, and morphological characteristics, among other conventional particles. Recently, Janus particles have attracted considerable attention as effective particulate drug delivery systems as they can accommodate two opposing pharmaceutical agents that can be engineered at the molecular level to achieve better target affinity, lower drug dosage to achieve a therapeutic effect, and controlled drug release with improved pharmacokinetics and pharmacodynamics. This article discusses the development of Janus particles for tailored and improved delivery of pharmaceutical agents for diabetes treatment and antimicrobial applications. It provides an account of advances in the synthesis of Janus particles from various materials using different approaches. It appraises Janus particles as a promising particulate system with the potential to improve conventional delivery systems, providing a better loading capacity and targeting specificity whilst promoting multi-drugs loading and single-dose-drug administration.
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Tang L, Yi W, Qin F, Fan Q. Switchable Nanostructures Triggered by Noyori-Type Organometallics. Inorg Chem 2022; 61:19668-19672. [PMID: 36454590 DOI: 10.1021/acs.inorgchem.2c03567] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
Abstract
Janus particles (JPs) self-assembled by a typical small organic gemini surfactant in water were reported by us. After the addition of a small amount Noyori-type organometallics to an organic solvent, these gourd-shaped JPs became new nanostructures, such as nanotubes (NTs), nanoribbons (NRs), and new types of JPs. Significant changes in specific rotation occurred on the solution-like samples, triggered by chiral organometallics in 20 μL of ethyl acetate. Almost all of these organometallics-triggered nanostructures can be conveniently detached and reversed within 5 min due to the easy-phase separation of ethyl acetate from the emulsion and the chemical-selective unstable binding between the organometallics and carbonate group on the surfactant.
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Affiliation(s)
- Lei Tang
- Laboratory of Anaestheisa and Critical Care Medicine, Department of Anesthesiology, Translational Neuroscience Center, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Wenhao Yi
- West China Hospital, Sichuan University, Chengdu 610041, China
| | - Feng Qin
- West China Hospital, Sichuan University, Chengdu 610041, China
| | - Qin Fan
- West China Hospital, Sichuan University, Chengdu 610041, China
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Wu Y, Sun Y, Zhang C, He M, Qi D. Interfacial-assembly engineering of asymmetric magnetic-mesoporous organosilica nanocomposites with tunable architectures. NANOSCALE 2022; 14:15772-15788. [PMID: 36250227 DOI: 10.1039/d2nr03814e] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
The asymmetric morphology of nanomaterials plays a crucial role in regulating their physical and chemical properties, which can be tuned by two key factors: (i) interfacial interaction between seed particles and growth materials (anisotropic island nucleation) and (ii) reaction kinetics of the growth material (growth approach). However, controllable preparation of asymmetric nanoarchitectures is a daunting challenge because it is difficult to tune the interfacial energy profile of a nanoparticle. Here, we report an interfacial-assembly strategy that makes use of different surfactant/organosilica-oligomer micelles to actively regulate interfacial energy profiles, thus enabling controllable preparation of well-defined asymmetric nanoarchitectures (i.e., organosilica nano-tails) on magnetic Fe3O4 nanoparticles. For our magnetic nanocomposite system, the assembly structure of surfactant/organosilica-oligomer micelles and the interfacial electrostatic interaction are found to play critical roles in controlling the nucleation and architectures of asymmetric magnetic-mesoporous organosilica nanocomposite particles (AMMO-NCPs). Surfactant/organosilica-oligomer micelles with a one-dimensional wormlike linear structure could strengthen the interfacial assembly behavior between seed particles and growth materials, and thus achieved the longest tail length (25 μm) exceeding the previously reported highest recorded value (2.5 μm) of one order of magnitude. In addition, clickable AMMO-NCPs can employ a thiol-ene click reaction to modify their surface with a broad range of functional groups, such as amines, carboxyls, and even long alkyl chains, which allows for expanding functionalities. We demonstrate that C18 alkyl-grafted AMMO-NCPs can self-assemble into self-standing membranes with robust superhydrophobicity. In addition, carboxyl-modified AMMO-NCPs exhibit excellent adsorption capacity for cationic compounds. This study paves the way for designing and synthesizing asymmetric nanomaterials, which possess immense potential for future engineering applications in nanomaterial assembly, nanoreactors, biosensing, drug delivery, and beyond.
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Affiliation(s)
- Yue Wu
- Zhejiang Provincial Engineering Research Center for Green and Low-carbon Dyeing & Finishing, Ministry of Education, Zhejiang Sci-Tech University, Hangzhou 310018, China.
- Key Laboratory of Advanced Textile Materials and Manufacturing Technology and Engineering Research Center for Eco-Dyeing & Finishing of Textiles, Ministry of Education, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Yangyi Sun
- Zhejiang Provincial Engineering Research Center for Green and Low-carbon Dyeing & Finishing, Ministry of Education, Zhejiang Sci-Tech University, Hangzhou 310018, China.
- Key Laboratory of Advanced Textile Materials and Manufacturing Technology and Engineering Research Center for Eco-Dyeing & Finishing of Textiles, Ministry of Education, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Chengyu Zhang
- Zhejiang Provincial Engineering Research Center for Green and Low-carbon Dyeing & Finishing, Ministry of Education, Zhejiang Sci-Tech University, Hangzhou 310018, China.
- Key Laboratory of Advanced Textile Materials and Manufacturing Technology and Engineering Research Center for Eco-Dyeing & Finishing of Textiles, Ministry of Education, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Mengyao He
- Zhejiang Provincial Engineering Research Center for Green and Low-carbon Dyeing & Finishing, Ministry of Education, Zhejiang Sci-Tech University, Hangzhou 310018, China.
- Key Laboratory of Advanced Textile Materials and Manufacturing Technology and Engineering Research Center for Eco-Dyeing & Finishing of Textiles, Ministry of Education, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Dongming Qi
- Zhejiang Provincial Engineering Research Center for Green and Low-carbon Dyeing & Finishing, Ministry of Education, Zhejiang Sci-Tech University, Hangzhou 310018, China.
- Key Laboratory of Advanced Textile Materials and Manufacturing Technology and Engineering Research Center for Eco-Dyeing & Finishing of Textiles, Ministry of Education, Zhejiang Sci-Tech University, Hangzhou 310018, China
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Wang B, Li T, Guo W, Cao P, Wang R, Song P, He Y, Li Y. Fabrication of Hierarchical Porous Polymer Particles via Blending Strategy of Water and Polymer Mixture. POLYM INT 2022. [DOI: 10.1002/pi.6363] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Bin Wang
- Key Lab.Eco‐functional Polymer Materials of MOE, Institute of Polymer, College of Chemistry & Chemical Engineering Northwest Normal University Lanzhou 730070 China
| | - Tian Li
- Key Lab.Eco‐functional Polymer Materials of MOE, Institute of Polymer, College of Chemistry & Chemical Engineering Northwest Normal University Lanzhou 730070 China
| | - Wenling Guo
- Key Lab.Eco‐functional Polymer Materials of MOE, Institute of Polymer, College of Chemistry & Chemical Engineering Northwest Normal University Lanzhou 730070 China
| | - Peng Cao
- Key Lab.Eco‐functional Polymer Materials of MOE, Institute of Polymer, College of Chemistry & Chemical Engineering Northwest Normal University Lanzhou 730070 China
| | - Rongmin Wang
- Key Lab.Eco‐functional Polymer Materials of MOE, Institute of Polymer, College of Chemistry & Chemical Engineering Northwest Normal University Lanzhou 730070 China
| | - Pengfei Song
- Key Lab.Eco‐functional Polymer Materials of MOE, Institute of Polymer, College of Chemistry & Chemical Engineering Northwest Normal University Lanzhou 730070 China
| | - Yufeng He
- Key Lab.Eco‐functional Polymer Materials of MOE, Institute of Polymer, College of Chemistry & Chemical Engineering Northwest Normal University Lanzhou 730070 China
| | - Yonggang Li
- Key Lab.Eco‐functional Polymer Materials of MOE, Institute of Polymer, College of Chemistry & Chemical Engineering Northwest Normal University Lanzhou 730070 China
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10
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Cui D, Shi B, Xia Z, Zhu W, Lü C. Construction of polymer brush-decorated amphiphilic Janus graphene oxide nanosheets via a Pickering emulsion template for catalytic applications. NEW J CHEM 2022. [DOI: 10.1039/d2nj03874a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
2D amphiphilic Janus GO nanocatalysts were prepared using Pickering emulsions and grafted polymer brushes, with excellent performance in homogeneous and interfacial catalysis.
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Affiliation(s)
- Donghui Cui
- Institute of Chemistry, Northeast Normal University, Changchun 130024, P. R. China
| | - Bingfeng Shi
- Institute of Chemistry, Northeast Normal University, Changchun 130024, P. R. China
| | - Zhinan Xia
- Institute of Chemistry, Northeast Normal University, Changchun 130024, P. R. China
| | - Wenjing Zhu
- Institute of Chemistry, Northeast Normal University, Changchun 130024, P. R. China
| | - Changli Lü
- Institute of Chemistry, Northeast Normal University, Changchun 130024, P. R. China
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Vu TV, Razavi S, Papavassiliou DV. Effect of Janus particles and non-ionic surfactants on the collapse of the oil-water interface under compression. J Colloid Interface Sci 2021; 609:158-169. [PMID: 34894550 DOI: 10.1016/j.jcis.2021.11.160] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Revised: 11/21/2021] [Accepted: 11/25/2021] [Indexed: 12/11/2022]
Abstract
HYPOTHESIS Janus particles (JPs) and surfactants express different behaviors at the oil-water interface under compression. When both are present at the interface, their synergies result in a different collapse mechanism than when present individually depending on the concentration of the JPs and surfactants. EXPERIMENTS Coarse-grained modeling methods were used to probe the synergies between Janus nanoparticles and nonionic surfactants on the stability of an oil-water interface under compression. When both JPs and surfactants were present, the interface was covered at 0-55% area by JPs and contained surfactants at 0-40% of the interfacial surfactant concentration corresponding to the critical micelle concentration (CMC). FINDINGS Compression of the interface with only surfactants resulted in the expulsion of surfactant molecules to the water phase once the interfacial concentration of surfactant molecules reached the CMC value. Compression of a Janus particle-laden interface past the closed-packing point led to a buckled interface, so that the total interfacial area remained constant upon further compression. When both surfactants and JPs were present on the interface, JPs still caused buckling, which helped retain the surfactant molecules on the interface. The interface exhibited a higher level of deformation in presence of surfactants. When the surfactant concentration was high, under compression, the surfactants partitioned into the water phase, but the buckling of the interface persisted.
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Affiliation(s)
- Tuan V Vu
- School of Chemical, Biological, and Material Engineering, University of Oklahoma, 100 East Boyd St., Norman, OK 73019-1004, USA
| | - Sepideh Razavi
- School of Chemical, Biological, and Material Engineering, University of Oklahoma, 100 East Boyd St., Norman, OK 73019-1004, USA.
| | - Dimitrios V Papavassiliou
- School of Chemical, Biological, and Material Engineering, University of Oklahoma, 100 East Boyd St., Norman, OK 73019-1004, USA.
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Chang F, Vis CM, Bergmeijer M, Howes SC, Bruijnincx PCA. Bifunctional Janus Silica Spheres for Pickering Interfacial Tandem Catalysis. CHEMSUSCHEM 2021; 14:5328-5335. [PMID: 34668343 PMCID: PMC9297878 DOI: 10.1002/cssc.202101238] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Revised: 10/18/2021] [Indexed: 05/05/2023]
Abstract
Nature provides much inspiration for the design of multistep conversion processes, with numerous reactions running simultaneously and without interference in cells, for example. A key challenge in mimicking nature's strategies is to compartmentalize incompatible reagents and catalysts, for example, for tandem catalysis. Here, we present a new strategy for antagonistic catalyst compartmentalization. The synthesis of bifunctional Janus catalyst particles carrying acid and base groups on the particle's opposite patches is reported as is their application as acid-base catalysts in oil/water emulsions. The synthesis strategy involved the use of monodisperse, hydrophobic and amine-functionalized silica particles (SiO2 -NH2 -OSi(CH3 )3 ) to prepare an oil-in-water Pickering emulsion (PE) with molten paraffin wax. After solidification, the exposed patch of the silica particles was selectively etched and refunctionalized with acid groups to yield acid-base Janus particles (Janus A-B). These materials were successfully applied in biphasic Pickering interfacial catalysis for the tandem dehydration-Knoevenagel condensation of fructose to 5-(hydroxymethyl)furfural-2-diethylmalonate (5-HMF-DEM) in a water/4-propylguaiacol PE. The results demonstrate the advantage of rapid extraction of 5-hydroxymethylfurfural (5-HMF), a prominent platform molecule prone to side product formation in acidic media. A simple strategy to tune the acid/base balance using PE with both Janus A-B and monofunctional SiO2 -NH2 -OSi(CH3 )3 base catalysts proved effective for antagonistic tandem catalysis.
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Affiliation(s)
- Fuqiang Chang
- Organic Chemistry and CatalysisDebye Institute for Nanomaterials ScienceUtrecht UniversityUniversiteitsweg 993584 CGUtrechtThe Netherlands
| | - Carolien M. Vis
- Inorganic Chemistry and CatalysisDebye Institute for Nanomaterials ScienceUtrecht UniversityUniversiteitsweg 993584 CGUtrechtThe Netherlands
| | - Menno Bergmeijer
- Structural BiochemistryBijvoet Centre for Biomolecular ResearchUtrecht UniversityUniversiteitsweg 993584 CGUtrechtThe Netherlands
| | - Stuart C. Howes
- Structural BiochemistryBijvoet Centre for Biomolecular ResearchUtrecht UniversityUniversiteitsweg 993584 CGUtrechtThe Netherlands
| | - Pieter C. A. Bruijnincx
- Organic Chemistry and CatalysisDebye Institute for Nanomaterials ScienceUtrecht UniversityUniversiteitsweg 993584 CGUtrechtThe Netherlands
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Li C, Peng H, Cai J, Li L, Zhang J, Mai Y. Emulsion-Guided Controllable Construction of Anisotropic Particles: Droplet Size Determines Particle Structure. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2102930. [PMID: 34170570 DOI: 10.1002/adma.202102930] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2021] [Revised: 05/20/2021] [Indexed: 05/27/2023]
Abstract
Anisotropic particles have attracted significant attention due to their alluring features that distinguish them from isotropic particles. One of the most appealing strategies for the synthesis of anisotropic particles is the emulsion-guided method. However, morphological control and the understanding of formation mechanisms have remained a major challenge. Based on a novel mechanism, here, a facile one-pot emulsion-templating method for the tunable construction of anisotropic polymeric particles (APPs) with different defined structures is reported. Three types of monocomponent APPs with new morphologies and sizes in the range of 240-650 nm, including Janus mushroom-like mesoporous poly(m-phenylenediamine) (PmPD) particles, wheel-shaped particles, and acorn-like PmPD particles, are obtained by controlling the average size of the oil droplets in the emulsion. Furthermore, the APPs demonstrate the ability for conversion to nitrogen-doped anisotropic carbon particles (ACPs) by pyrolysis at 800 °C under a N2 atmosphere, thereby inheriting their structures. These novel ACPs show appreciable potential as metal-free electrocatalysts for use in oxygen reduction reactions. Compared to their isotropic counterpart, these ACPs exhibit remarkable advantages such as enhanced specific surface area and pore volume, reduced stacking density, and easy fabrication of continuous and uniform membrane electrodes.
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Affiliation(s)
- Chen Li
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Key Laboratory of Electrical Insulation and Thermal Ageing, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China
| | - Haijun Peng
- Key Laboratory of Special Functional and Smart Polymer Materials of Ministry of Industry and Information Technology, School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, 1 Dongxiang Road, Xi'an, Shaanxi, 710129, China
| | - Jiandong Cai
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Key Laboratory of Electrical Insulation and Thermal Ageing, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China
| | - Le Li
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Key Laboratory of Electrical Insulation and Thermal Ageing, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China
| | - Jian Zhang
- Key Laboratory of Special Functional and Smart Polymer Materials of Ministry of Industry and Information Technology, School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, 1 Dongxiang Road, Xi'an, Shaanxi, 710129, China
| | - Yiyong Mai
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Key Laboratory of Electrical Insulation and Thermal Ageing, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China
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14
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Frank B, Perovic M, Djalali S, Antonietti M, Oschatz M, Zeininger L. Synthesis of Polymer Janus Particles with Tunable Wettability Profiles as Potent Solid Surfactants to Promote Gas Delivery in Aqueous Reaction Media. ACS APPLIED MATERIALS & INTERFACES 2021; 13:32510-32519. [PMID: 34185504 PMCID: PMC8283753 DOI: 10.1021/acsami.1c07259] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Accepted: 06/18/2021] [Indexed: 06/13/2023]
Abstract
Janus particles exhibit a strong tendency to directionally assemble and segregate to interfaces and thus offer advantages as colloidal analogues of molecular surfactants to improve the stability of multiphasic mixtures. Investigation and application of the unique adsorption properties require synthetic procedures that enable careful design and reliable control over the particles' asymmetric chemistry and wettability profiles with high morphological uniformity across a sample. Herein, we report on a novel one-step synthetic approach for the generation of amphiphilic polymer Janus particles with highly uniform and tunable wettability contrasts, which is based on using reconfigurable bi-phasic Janus emulsions as versatile particle scaffolds. Two phase-separated acrylate oils were used as the constituent droplet phases and transformed into their solidified Janus particle replicas via UV-induced radical polymerization. Using Janus emulsions as particle precursors offers the advantage that their internal droplet geometry can be fine-tuned by changing the force balance of surface tensions acting at the individual interfaces via surfactants or the volume ratio of the constituent phases. In addition, preassembled functional surfactants at the droplet interfaces can be locked in position upon polymerization, which enables both access toward postfunctionalization reaction schemes and the generation of highly uniform Janus particles with adjustable wettability profiles. Depending on the particle morphology and wettability, their interfacial position can be adjusted, which allows us to stabilize either air bubbles-in-water or water droplets-in-air (liquid marbles). Motivated by the interfacial activity of the particles and particularly the longevity of the resulting particle-stabilized air-in-water bubbles, we explored their ability to promote the delivery of oxygen inside a liquid-phase reaction medium, namely, for the heterogeneous Au-NP-mediated catalytic oxidation of d-glucose. We observed a 2.2-fold increase in the reaction rate attributed to the increase of the local concentration of oxygen around catalysts, thus showcasing a new strategy to overcome the limited solubility of gases in aqueous reaction media.
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Affiliation(s)
- Bradley
D. Frank
- Department
of Colloid Chemistry, Max Planck Institute
of Colloids and Interfaces, Am Mühlenberg 1, 14476 Potsdam, Germany
| | - Milena Perovic
- Department
of Colloid Chemistry, Max Planck Institute
of Colloids and Interfaces, Am Mühlenberg 1, 14476 Potsdam, Germany
| | - Saveh Djalali
- Department
of Colloid Chemistry, Max Planck Institute
of Colloids and Interfaces, Am Mühlenberg 1, 14476 Potsdam, Germany
| | - Markus Antonietti
- Department
of Colloid Chemistry, Max Planck Institute
of Colloids and Interfaces, Am Mühlenberg 1, 14476 Potsdam, Germany
| | - Martin Oschatz
- Department
of Colloid Chemistry, Max Planck Institute
of Colloids and Interfaces, Am Mühlenberg 1, 14476 Potsdam, Germany
- Faculty
of Chemistry and Earth Sciences, Friedrich-Schiller-University
of Jena, Philosophenweg
7a, 07743 Jena, Germany
| | - Lukas Zeininger
- Department
of Colloid Chemistry, Max Planck Institute
of Colloids and Interfaces, Am Mühlenberg 1, 14476 Potsdam, Germany
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15
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Tan JSJ, Wong CH, Chen Z. Janus Particle Preparation through UV-Induced Partial Photodegradation of Spin-Coated Particle Films. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:8167-8176. [PMID: 34176271 DOI: 10.1021/acs.langmuir.1c00848] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Janus particles contain two or more chemical properties typically on opposing faces. With various property combinations possible, there are several potential applications, such as surfactants and drug delivery. However, scaling up the particle production process at reasonable cost is a limiting factor, and the method reported here aims to circumvent this issue. The process is based on a top-down destructive strategy that consists of two steps. Photocatalytic titanium dioxide particles prefunctionalized with a surface coating were assembled as particle films via spin-coating on a substrate. The particle films were placed directly under an ultraviolet light source, which induced the photodegradation of the surface coating only on the particle surfaces exposed to the light. The generated Janus particles were amphiphobic-amphiphilic in character. The Janus particles had a theoretical Janus balance close to ideal and remained attached at a hexane/water interface after disruption. They were able to make Pickering emulsions of water in silicone oil with a low energy input. The reported method may be easily scaled up to facilitate the production of gram-scale yields. The use of UV is clean and efficient and can be applied to semiconductor particles with surface coatings that are susceptible to photodegradation, making this method highly versatile.
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Affiliation(s)
- Jasmine Si Jia Tan
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798
- Johnson & Johnson PTE. LTD., 2 Science Park Drive, #07-13, Ascent, Singapore Science Park 1, Singapore 118222
| | - Chong Hui Wong
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798
| | - Zhong Chen
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798
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16
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Shi M, Qiu J, Feng S, Zhang L, Zhao Y, Lu TJ, Xu F. Janus Vitrification of Droplet via Cold Leidenfrost Phenomenon. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2021; 17:e2007325. [PMID: 33705588 DOI: 10.1002/smll.202007325] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Revised: 01/23/2021] [Indexed: 06/12/2023]
Abstract
Janus particles with asymmetric crystals show great importance in optoelectronics and photocatalysis, but their synthesis usually requires complicated procedures. Here, an unexpected Janus vitrification phenomenon is observed in a droplet caused by the Leidenfrost effect at a cryogenic temperature, which is commonly regarded as symmetric. The Leidenfrost phenomenon levitates the droplet when it comes in contact with liquid nitrogen causing different cooling conditions on the droplet's top and bottom surfaces. It induces asymmetric crystallization in the droplet, forming a Janus vitrified particle with an asymmetric crystallization borderline after cooling, as further evidenced by cryotransmission electron microscopy (cryo-TEM) experiments. Theoretical analysis and experimental study indicate that the position of the asymmetric crystallization borderline is determined by the droplet radius and density, and the observation window of asymmetric crystallization borderline is determined by the chemical concentration. The finding reveals the asymmetric crystallization phenomenon in droplet vitrification for the first time, and provides a new insight for creating Janus particles through the Leidenfrost phenomenon.
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Affiliation(s)
- Meng Shi
- Bioinspired Engineering and Biomechanics Center (BEBC), MOE Key Laboratory of Biomedical Information Engineering, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, 710049, P. R. China
- Laser Thermal Laboratory, Department of Mechanical Engineering, University of California, Berkeley, Berkeley, CA, 94720-1740, USA
| | - Jinbin Qiu
- Bioinspired Engineering and Biomechanics Center (BEBC), MOE Key Laboratory of Biomedical Information Engineering, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, 710049, P. R. China
| | - Shangsheng Feng
- Bioinspired Engineering and Biomechanics Center (BEBC), MOE Key Laboratory of Biomedical Information Engineering, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, 710049, P. R. China
| | - Lei Zhang
- MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, School of Physics, Xi'an Jiaotong University, Xi'an, 710049, P. R. China
| | - Yimin Zhao
- MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, School of Physics, Xi'an Jiaotong University, Xi'an, 710049, P. R. China
| | - Tian Jian Lu
- State Key Laboratory of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, P. R. China
- MIIT Key Laboratory of Multifunctional Lightweight Materials and Structures (MLMS), Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, P. R. China
| | - Feng Xu
- Bioinspired Engineering and Biomechanics Center (BEBC), MOE Key Laboratory of Biomedical Information Engineering, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, 710049, P. R. China
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17
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Choisnet T, Canevet D, Sallé M, Lorthioir C, Bouteiller L, Woisel P, Niepceron F, Nicol E, Colombani O. Colored Janus Nanocylinders Driven by Supramolecular Coassembly of Donor and Acceptor Building Blocks. ACS NANO 2021; 15:2569-2577. [PMID: 33512151 DOI: 10.1021/acsnano.0c07039] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Janus nanocylinders exhibit nanometric dimensions, a high aspect ratio, and two faces with different chemistries (Janus character), making them potentially relevant for applications in optics, magnetism, catalysis, surface nanopatterning, or interface stabilization, but they are also very difficult to prepare by conventional strategies. In the present work, Janus nanocylinders were prepared by supramolecular coassembly in water of two different polymers functionalized with complementary assembling units. The originality of our approach consists in combining charge transfer complexation between electron-rich and electron-poor units with hydrogen bonding to (1) drive the supramolecular formation of one-dimensional structures (cylinders), (2) force the two polymer arms on opposite sides of the cylinders independently of their compatibility, resulting in Janus nanoparticles, and (3) detect coassembly through a color change of the solution upon mixing of the functional polymers.
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Affiliation(s)
- Thomas Choisnet
- Institut des Molécules et Matériaux du Mans (IMMM), UMR 6283 CNRS, Le Mans Université, Avenue Olivier Messiaen, 72085 Le Mans, Cedex 9, France
- Laboratoire MOLTECH-Anjou, UNIV Angers, SFR MATRIX, UMR CNRS 6200, 2 Bd Lavoisier, 49045 Angers Cedex, France
| | - David Canevet
- Laboratoire MOLTECH-Anjou, UNIV Angers, SFR MATRIX, UMR CNRS 6200, 2 Bd Lavoisier, 49045 Angers Cedex, France
| | - Marc Sallé
- Laboratoire MOLTECH-Anjou, UNIV Angers, SFR MATRIX, UMR CNRS 6200, 2 Bd Lavoisier, 49045 Angers Cedex, France
| | - Cédric Lorthioir
- CNRS, Laboratoire de Chimie de la Matière Condensée de Paris, Sorbonne Université, UMR 7574, 75252 Paris, France
| | - Laurent Bouteiller
- CNRS, Institut Parisien de Chimie Moléculaire, Sorbonne Université, UMR 8232, Equipe Chimie des Polymères, 75252 Paris, France
| | - Patrice Woisel
- Univ. Lille, CNRS, INRAE, Centrale Lille, UMR 8207 - UMET - Unité Matériaux et Transformations, F-59000 Lille, France
| | - Frédérick Niepceron
- Institut des Molécules et Matériaux du Mans (IMMM), UMR 6283 CNRS, Le Mans Université, Avenue Olivier Messiaen, 72085 Le Mans, Cedex 9, France
| | - Erwan Nicol
- Institut des Molécules et Matériaux du Mans (IMMM), UMR 6283 CNRS, Le Mans Université, Avenue Olivier Messiaen, 72085 Le Mans, Cedex 9, France
| | - Olivier Colombani
- Institut des Molécules et Matériaux du Mans (IMMM), UMR 6283 CNRS, Le Mans Université, Avenue Olivier Messiaen, 72085 Le Mans, Cedex 9, France
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18
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Gheisari F, Shafiee M, Abbasi M, Jangjou A, Izadpanah P, Vaez A, Amani AM. Janus nanoparticles: an efficient intelligent modern nanostructure for eradicating cancer. Drug Metab Rev 2021; 53:592-603. [PMID: 33561356 DOI: 10.1080/03602532.2021.1878530] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
In the modern age, the struggle to generate appropriate bio-based materials and nano-scaled colloidal particulates for developed application domains, has already resulted in remarkable attempts in the advancement of regulated size and shape, anisotropy, and characteristics of nanostructures. The bottom-up development strategies of components are among the most important science areas throughout nanotechnology, in which the designed building blocks are often utilized to generate novel structures by random self-assembly. In biomedical applications, Janus nanoparticles (JNPs) are necessary. This is due to their effective stimulus-responsive properties, tunable structure, biocompatibility, containing two surfaces with various hydrophobic characteristics and distinct functional groups. Featuring two parts with differing hydrophobicity has been the most critical aspect of the Janus amphiphilic particles. Development of JNPs has been afforded, using imaging agents (e.g. gold (AU) for photoacoustic imaging processing (PAI), silver for surface-enhanced Raman scattering (SERS), and Fe3O4 and MnO2 to magnetic resonance imaging (MRI)). It is also to be mentioned that a number of other properties become salient - properties such as integration imaging factors into JNPs (like quantum dots, fluorescent dyes), multiple imaging methods for screening and diagnosis application can indeed be accomplished. Janus nanostructures have been promising platforms for bioengineering as therapeutic carriers, drug delivery vehicles, and biosensor equipment; they may also be employed for the transport of bioactive hydrophilic and hydrophobic materials. The main production approaches and major advancement of JNPs in the biomedical sector and cancer therapy will be described in this paper.
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Affiliation(s)
- Farshid Gheisari
- Department of Nuclear Medicine, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Mostafa Shafiee
- Department of Medical Nanotechnology, School of Advanced Medical Sciences and Technologies, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Milad Abbasi
- Department of Medical Nanotechnology, School of Advanced Medical Sciences and Technologies, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Ali Jangjou
- Department of Emergency Medicine, School of Medicine, Namazi Teaching Hospital, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Peyman Izadpanah
- Department of Cardiology, School of Medicine, Namazi Teaching Hospital, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Ahmad Vaez
- Department of Tissue Engineering and Applied Cell Sciences, School of Advanced Medical Sciences and Technologies, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Ali Mohammad Amani
- Department of Medical Nanotechnology, School of Advanced Medical Sciences and Technologies, Shiraz University of Medical Sciences, Shiraz, Iran
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19
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Correia EL, Brown N, Razavi S. Janus Particles at Fluid Interfaces: Stability and Interfacial Rheology. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:374. [PMID: 33540620 PMCID: PMC7913064 DOI: 10.3390/nano11020374] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/01/2021] [Revised: 01/26/2021] [Accepted: 01/29/2021] [Indexed: 02/08/2023]
Abstract
The use of the Janus motif in colloidal particles, i.e., anisotropic surface properties on opposite faces, has gained significant attention in the bottom-up assembly of novel functional structures, design of active nanomotors, biological sensing and imaging, and polymer blend compatibilization. This review is focused on the behavior of Janus particles in interfacial systems, such as particle-stabilized (i.e., Pickering) emulsions and foams, where stabilization is achieved through the binding of particles to fluid interfaces. In many such applications, the interface could be subjected to deformations, producing compression and shear stresses. Besides the physicochemical properties of the particle, their behavior under flow will also impact the performance of the resulting system. This review article provides a synopsis of interfacial stability and rheology in particle-laden interfaces to highlight the role of the Janus motif, and how particle anisotropy affects interfacial mechanics.
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Affiliation(s)
| | | | - Sepideh Razavi
- School of Chemical, Biological, and Materials Engineering, University of Oklahoma, 100 E. Boyd Street, Norman, OK 73019, USA; (E.L.C.); (N.B.)
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20
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Song Q, Chao Y, Zhang Y, Shum HC. Controlled Formation of All-Aqueous Janus Droplets by Liquid-Liquid Phase Separation of an Aqueous Three-Phase System. J Phys Chem B 2021; 125:562-570. [PMID: 33416329 DOI: 10.1021/acs.jpcb.0c09884] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Janus droplets have been demonstrated in a wide range of applications, ranging from drug delivery, to biomedical imaging, to bacterial detection. However, existing fabrication strategies often involve nonaqueous solvents, such as organic solvent or oil, which largely limits their use in fields that require a high degree of biocompatibility. Here, we present a method to achieve all-aqueous Janus droplets by liquid-liquid phase separation of an aqueous three-phase system (A3PS). An aqueous droplet containing two initially miscible polymers is first injected into an aqueous solution of another concentrated polymer, and then it spontaneously phase-separates into a Janus droplet due to the diffusive mass exchange between the drop and bulk phases during equilibration. To achieve continuous generation of the Janus droplets, the A3PS is further integrated with microfluidics and electrospray. The size and shape of the phase-separated Janus droplets can be easily controlled by tuning the operation parameters, such as the flow rate and/or the initial composition of the drop phases. Dumbbell-shaped and snowman-shaped Janus droplets with average sizes between 100 and 400 μm can be generated by both coflow microfluidics and electrospray. In particular, the phase-separated Janus droplets can simultaneously load two different liposomes into each compartment, which are promising carriers for combination drugs. The obtained Janus droplets are superior templates for biocompatible materials, which can serve as building blocks such as high-order droplet patterns for constructing advanced biomaterials.
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Affiliation(s)
- Qingchun Song
- Department of Mechanical Engineering, Faculty of Engineering, The University of Hong Kong, Hong Kong (SAR), China
| | - Youchuang Chao
- Department of Mechanical Engineering, Faculty of Engineering, The University of Hong Kong, Hong Kong (SAR), China
| | - Yage Zhang
- Department of Mechanical Engineering, Faculty of Engineering, The University of Hong Kong, Hong Kong (SAR), China
| | - Ho Cheung Shum
- Department of Mechanical Engineering, Faculty of Engineering, The University of Hong Kong, Hong Kong (SAR), China
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21
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Zhang Y, Ettelaie R, Binks BP, Yang H. Highly Selective Catalysis at the Liquid–Liquid Interface Microregion. ACS Catal 2021. [DOI: 10.1021/acscatal.0c04604] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Yabin Zhang
- School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006, China
| | - Rammile Ettelaie
- Food Colloids Group, School of Food Science and Nutrition, University of Leeds, Leeds LS2 9JT, U.K
| | | | - Hengquan Yang
- School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006, China
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22
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Duan Y, Zhao X, Sun M, Hao H. Research Advances in the Synthesis, Application, Assembly, and Calculation of Janus Materials. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.0c04304] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
| | - Xia Zhao
- School of Chemical Engineering, Northwest University, Xi’an 710069, Shan xi, China
| | - Miaomiao Sun
- School of Chemical Engineering, Northwest University, Xi’an 710069, Shan xi, China
| | - Hong Hao
- School of Chemical Engineering, Northwest University, Xi’an 710069, Shan xi, China
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23
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Frank BD, Antonietti M, Zeininger L. Structurally Anisotropic Janus Particles with Tunable Amphiphilicity via Polymerization of Dynamic Complex Emulsions. Macromolecules 2020; 54:981-987. [PMID: 33518808 PMCID: PMC7842141 DOI: 10.1021/acs.macromol.0c02152] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2020] [Revised: 11/24/2020] [Indexed: 12/20/2022]
Abstract
![]()
A facile
one-step approach for the synthesis of physically and
chemically anisotropic polymer particles with tunable size, shape,
composition, wettability, and functionality is reported. Specifically,
dynamically reconfigurable oil-in-water Janus emulsions containing
photocurable hydrocarbon or fluorocarbon acrylate monomers as one
of the droplet phases are used as structural templates to polymerize
them into precision Janus particles with highly uniform anomalous
morphologies including (hemi-) spheres, lenses, and bowls. During
polymerization, each interface is exposed to a different chemical
environment, yielding particles with an intrinsic Janus character
that can be amplified via side-selective postfunctionalization. The
fabrication method allows to start with various common emulsification
techniques, thus generating particles in the range of 200 nm –150
μm, also at a technical scale. The anisotropic shape combined
with the asymmetric wettability profile of the produced particles
promotes their directed self-assembly into colloidal clusters as well
as their directional alignment at fluid interfaces. We foresee the
application of such Janus particles in technical emulsions or oil
recovery, for the manufacturing of programmed self-assembled architectures,
and for the engineering of microstructured interfaces.
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Affiliation(s)
- Bradley D Frank
- Department of Colloid Chemistry, Max Planck Institute of Colloids & Interfaces, Am Muehlenberg 1, 14476 Potsdam, Germany
| | - Markus Antonietti
- Department of Colloid Chemistry, Max Planck Institute of Colloids & Interfaces, Am Muehlenberg 1, 14476 Potsdam, Germany
| | - Lukas Zeininger
- Department of Colloid Chemistry, Max Planck Institute of Colloids & Interfaces, Am Muehlenberg 1, 14476 Potsdam, Germany
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24
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Shin JJ. Effect of Site-Specific Functionalization on the Shape of Nonspherical Block Copolymer Particles. Polymers (Basel) 2020; 12:E2804. [PMID: 33256239 PMCID: PMC7760798 DOI: 10.3390/polym12122804] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Revised: 11/23/2020] [Accepted: 11/24/2020] [Indexed: 10/26/2022] Open
Abstract
Shape-anisotropic polymeric colloids having chemically distinct compartments are promising materials, however, introducing site-specific surface functionality to block copolymer (BCP) particles has not yet been actively investigated. The current contribution demonstrates the selective surface functionalization of nanostructured, ellipsoidal polystyrene-b-polybutadiene (PS-b-PB) particle and investigate their effects on the particle shape. Photo-induced thiol-ene click reaction was used as a selective functionalization chemistry for modifying the PB block, which was achieved by controlling the feed ratio of functional thiols to the double bonds in PB. Importantly, the controlled particle elongation was observed as a function of the degree of PB functionalization. Such an increase in the aspect ratio is attributed to the (i) increased incompatibility of the PS and modified PB block and (ii) the reduced surface tension between the particles and surrounding aqueous medium, both of which contributes to the further elongation of ellipsoids. Further tunability of the elongation behavior of ellipsoids was further demonstrated by controlling the particle size and chemical structure of functional thiols, showing the versatility of this approach for controlling the particle shape. Finally, the utility of surface functionality was demonstrated by the facile complexation of fluorescent dye on the modified surface of the particle via favorable interaction, which showed stable fluorescence and colloidal dispersity.
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Affiliation(s)
- Jaeman J Shin
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Korea
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25
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Al Nuumani R, Smoukov SK, Bolognesi G, Vladisavljević GT. Highly Porous Magnetic Janus Microparticles with Asymmetric Surface Topology. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:12702-12711. [PMID: 33105997 DOI: 10.1021/acs.langmuir.0c02315] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Monodispersed magnetic Janus particles composed of a porous polystyrene portion and a nonporous poly(vinyl acetate) portion with embedded oleic acid-coated magnetic nanoparticles were generated using microfluidic emulsification followed by two distinct phase separation events triggered by solvent evaporation. The template droplets were composed of 2 wt % polystyrene, 2 wt % poly(vinyl acetate), and 0.5-2 wt % n-heptane-based magnetic fluid dissolved in dichloromethane (DCM). The porosity of polystyrene compartments was the result of phase separation between a nonvolatile nonsolvent (n-heptane) and a volatile solvent (DCM) within polystyrene-rich phase. The focused ion beam cross-sectioning and scanning electron microscopy (SEM) imaging revealed high surface porosity of polystyrene compartments with negligible porosity of poly(vinyl acetate) parts, which can be exploited to increase the wettability contrast between the two polymers and enhance bubble generation in bubble-driven micromotors. The porosity of the polystyrene portion was controlled by varying the fraction of n-heptane in the dispersed phase. The particle composition was confirmed by scanning electron microscopy-energy-dispersive X-ray spectroscopy, Fourier transform infrared spectroscopy, and differential scanning calorimetry. The fabricated particles were successfully magnetized when subjected to an external magnetic field, which led to their aggregation into regular 2D assemblies. The particle clusters composed of two to four individual particles could be rotated with a rotating magnetic field. Microfluidic generation of highly porous Janus particles with compositional, topological, and magnetic asymmetry provides a cost-effective, easy-to-implement yet highly robust and versatile strategy for the manufacturing of multifunctional smart particles.
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Affiliation(s)
- Ruqaiya Al Nuumani
- Department of Chemical Engineering, Loughborough University, Loughborough LE11 3TU, United Kingdom
| | - Stoyan K Smoukov
- School of Engineering and Materials Science, Queen Mary University of London, London E1 4NS, United Kingdom
| | - Guido Bolognesi
- Department of Chemical Engineering, Loughborough University, Loughborough LE11 3TU, United Kingdom
| | - Goran T Vladisavljević
- Department of Chemical Engineering, Loughborough University, Loughborough LE11 3TU, United Kingdom
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26
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Rashidi A, Razavi S, Wirth CL. Influence of cap weight on the motion of a Janus particle very near a wall. Phys Rev E 2020; 101:042606. [PMID: 32422805 DOI: 10.1103/physreve.101.042606] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Accepted: 03/20/2020] [Indexed: 12/26/2022]
Abstract
The dynamics of anisotropic nano- to micro scale colloidal particles in confined environments, either near neighboring particles or boundaries, is relevant to a wide range of applications. We utilized Brownian dynamics simulations to predict the translational and rotational fluctuations of a Janus sphere with a cap of nonmatching density near a boundary. The presence of the cap significantly impacted the rotational dynamics of the particle as a consequence of gravitational torque at experimentally relevant conditions. Gravitational torque dominated stochastic torque for a particle >1 μm in diameter and with a 20-nm-thick gold cap. Janus particles at these conditions sampled mostly cap-down or "quenched" orientations. Although the results summarized herein showed that particles of smaller diameter (<1 μm) with a thin gold coating (<5 nm) behave similarly to an isotropic particle, small increases in either particle diameter or coating thickness quenched the polar rotation of the particle. Histogram landscapes of the separation distance from the boundary and orientation observations of particles with larger diameters or thicker gold coatings were mostly populated with quenched configurations. Finally, the histogram landscapes were inverted to obtain the potential energy landscapes, providing a road map for experimental data to be interpreted.
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Affiliation(s)
- Aidin Rashidi
- Chemical and Biomedical Engineering Department, Washkewicz College of Engineering, Cleveland State University, 2121 Euclid Avenue, Cleveland, Ohio 44115, USA
| | - Sepideh Razavi
- Chemical, Biological, and Materials Engineering Department, University of Oklahoma, Norman, Oklahoma 73019, USA
| | - Christopher L Wirth
- Chemical and Biomedical Engineering Department, Washkewicz College of Engineering, Cleveland State University, 2121 Euclid Avenue, Cleveland, Ohio 44115, USA
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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. [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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28
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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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29
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Kamp M, de Nijs B, van der Linden MN, de Feijter I, Lefferts MJ, Aloi A, Griffiths J, Baumberg JJ, Voets IK, van Blaaderen A. Multivalent Patchy Colloids for Quantitative 3D Self-Assembly Studies. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:2403-2418. [PMID: 32097015 PMCID: PMC7202687 DOI: 10.1021/acs.langmuir.9b03863] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/16/2019] [Revised: 01/23/2020] [Indexed: 06/10/2023]
Abstract
We report methods to synthesize sub-micron- and micron-sized patchy silica particles with fluorescently labeled hemispherical titania protrusions, as well as routes to efficiently characterize these particles and self-assemble these particles into non-close-packed structures. The synthesis methods expand upon earlier work in the literature, in which silica particles packed in a colloidal crystal were surface-patterned with a silane coupling agent. Here, hemispherical amorphous titania protrusions were successfully labeled with fluorescent dyes, allowing for imaging by confocal microscopy and super-resolution techniques. Confocal microscopy was exploited to experimentally determine the numbers of protrusions per particle over large numbers of particles for good statistical significance, and these distributions were compared to simulations predicting the number of patches as a function of core particle polydispersity and maximum separation between the particle surfaces. We self-assembled these patchy particles into open percolating gel networks by exploiting solvophobic attractions between the protrusions.
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Affiliation(s)
- Marlous Kamp
- Soft
Condensed Matter, Debye Institute for Nanomaterials Science, Utrecht University, Princetonplein 1, 3584 CC Utrecht, The Netherlands
- NanoPhotonics
Centre, Department of Physics, University
of Cambridge, J J Thomson Avenue, Cambridge CB3 0HE, United Kingdom
| | - Bart de Nijs
- Soft
Condensed Matter, Debye Institute for Nanomaterials Science, Utrecht University, Princetonplein 1, 3584 CC Utrecht, The Netherlands
- NanoPhotonics
Centre, Department of Physics, University
of Cambridge, J J Thomson Avenue, Cambridge CB3 0HE, United Kingdom
| | - Marjolein N. van der Linden
- Soft
Condensed Matter, Debye Institute for Nanomaterials Science, Utrecht University, Princetonplein 1, 3584 CC Utrecht, The Netherlands
| | - Isja de Feijter
- Laboratory
of Self-Organizing Soft Matter, Laboratory of Macromolecular and Organic
Chemistry, Department of Chemical Engineering and Chemistry, Institute
for Complex Molecular Systems, Eindhoven
University of Technology, Post Office
Box 513, 5600 MB Eindhoven, The Netherlands
| | - Merel J. Lefferts
- Soft
Condensed Matter, Debye Institute for Nanomaterials Science, Utrecht University, Princetonplein 1, 3584 CC Utrecht, The Netherlands
| | - Antonio Aloi
- Laboratory
of Self-Organizing Soft Matter, Laboratory of Macromolecular and Organic
Chemistry, Department of Chemical Engineering and Chemistry, Institute
for Complex Molecular Systems, Eindhoven
University of Technology, Post Office
Box 513, 5600 MB Eindhoven, The Netherlands
| | - Jack Griffiths
- NanoPhotonics
Centre, Department of Physics, University
of Cambridge, J J Thomson Avenue, Cambridge CB3 0HE, United Kingdom
| | - Jeremy J. Baumberg
- NanoPhotonics
Centre, Department of Physics, University
of Cambridge, J J Thomson Avenue, Cambridge CB3 0HE, United Kingdom
| | - Ilja K. Voets
- Laboratory
of Self-Organizing Soft Matter, Laboratory of Macromolecular and Organic
Chemistry, Department of Chemical Engineering and Chemistry, Institute
for Complex Molecular Systems, Eindhoven
University of Technology, Post Office
Box 513, 5600 MB Eindhoven, The Netherlands
| | - Alfons van Blaaderen
- Soft
Condensed Matter, Debye Institute for Nanomaterials Science, Utrecht University, Princetonplein 1, 3584 CC Utrecht, The Netherlands
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30
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Yang H, Lu X, Xin Z. Facile Fabrication of Lilium Pollen-like Organosilica Particles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:571-575. [PMID: 31916762 DOI: 10.1021/acs.langmuir.9b02627] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Organosilica particles with a novel lilium pollen-like morphology were synthesized by a one-step sol-gel method. The hydrolysis and co-condensation of vinyltrimethoxysilane (VTMS) and tetraethoxysilane (TEOS) took place in an aqueous medium with ammonia as the catalyst. The growth process of the organosilica particles was tracked by scanning electron microscopy (SEM). The bulk and surface composition of the lilium pollen-like organosilica particles were characterized by solid-state 29Si nuclear magnetic resonance (NMR) spectroscopy and X-ray photoelectron spectroscopy (XPS), respectively. In addition, bowl-like, golf ball-like, and walnut kernel-like organosilica particles could also be obtained by changing the concentration of ammonia, the amount of silane precursors, or the reaction medium. This study provides a facile method to prepare nonspherical organosilica particles with controllable morphologies.
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Affiliation(s)
- Huayu Yang
- Shanghai Key Laboratory of Multiphase Materials Chemical Engineering, Department of Product Engineering, School of Chemical Engineering , East China University of Science and Technology , Shanghai 200237 , China
| | - Xin Lu
- Shanghai Key Laboratory of Multiphase Materials Chemical Engineering, Department of Product Engineering, School of Chemical Engineering , East China University of Science and Technology , Shanghai 200237 , China
| | - Zhong Xin
- Shanghai Key Laboratory of Multiphase Materials Chemical Engineering, Department of Product Engineering, School of Chemical Engineering , East China University of Science and Technology , Shanghai 200237 , China
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31
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Tian L, Li B, Li X, Zhang Q. Janus dimers from tunable phase separation and reactivity ratios. Polym Chem 2020. [DOI: 10.1039/d0py00620c] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Janus dimers, as a typical species of anisotropic material, are useful for both theoretical simulations and practical applications.
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Affiliation(s)
- Lei Tian
- Institute of Low-Dimensional Materials Genome Initiative
- College of Chemistry and Environmental Engineering
- Shenzhen University
- Shenzhen
- P. R. China
| | - Bei Li
- Department of Applied Chemistry
- School of Natural and Applied Sciences
- Northwestern Polytechnical University
- Xi'an 710072
- P. R. China
| | - Xue Li
- Department of Applied Chemistry
- School of Natural and Applied Sciences
- Northwestern Polytechnical University
- Xi'an 710072
- P. R. China
| | - Qiuyu Zhang
- Department of Applied Chemistry
- School of Natural and Applied Sciences
- Northwestern Polytechnical University
- Xi'an 710072
- P. R. China
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32
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Hamilton HSC, Bradley LC. Probing the morphology evolution of chemically anisotropic colloids prepared by homopolymerization- and copolymerization-induced phase separation. Polym Chem 2020. [DOI: 10.1039/c9py01166h] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Chemically anisotropic colloids prepared by polymerization-induced phase separation during seeded emulsion polymerization with non-crosslinked seeds reveals tunability in both surface and interior properties based on the morphology evolution.
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Affiliation(s)
- Heather S. C. Hamilton
- Department of Polymer Science and Engineering
- University of Massachusetts Amherst
- Amherst
- USA
| | - Laura C. Bradley
- Department of Polymer Science and Engineering
- University of Massachusetts Amherst
- Amherst
- USA
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33
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Mei S, Pan M, Gao S, Song S, Wang J, Liu G. Organic–inorganic bimetallic hybrid particles with controllable morphology for the catalytic degradation of organic dyes. NEW J CHEM 2020. [DOI: 10.1039/d0nj01247e] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Amphiphilic bimetallic hybrid Janus nanoparticles with controllable morphology and ability to perform highly efficient catalytic degradation of organic dyes.
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Affiliation(s)
- Shuxing Mei
- Institute of Polymer Science and Engineering
- Hebei University of Technology
- Tianjin 300130
- P. R. China
| | - Mingwang Pan
- Institute of Polymer Science and Engineering
- Hebei University of Technology
- Tianjin 300130
- P. R. China
- Hebei Key Laboratory of Functional Polymers
| | - Shenshen Gao
- Institute of Polymer Science and Engineering
- Hebei University of Technology
- Tianjin 300130
- P. R. China
| | - Shaofeng Song
- Institute of Polymer Science and Engineering
- Hebei University of Technology
- Tianjin 300130
- P. R. China
| | - Juan Wang
- Institute of Polymer Science and Engineering
- Hebei University of Technology
- Tianjin 300130
- P. R. China
| | - Gang Liu
- Institute of Polymer Science and Engineering
- Hebei University of Technology
- Tianjin 300130
- P. R. China
- Hebei Key Laboratory of Functional Polymers
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34
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Lan Y, Choi J, Li H, Jia Y, Huang R, Stebe KJ, Lee D. Janus Particles with Varying Configurations for Emulsion Stabilization. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.9b02697] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yang Lan
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia 19104, United States
| | - Je Choi
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia 19104, United States
| | - Haoyang Li
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia 19104, United States
| | - Yankai Jia
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia 19104, United States
| | - Renjing Huang
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia 19104, United States
| | - Kathleen J. Stebe
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia 19104, United States
| | - Daeyeon Lee
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia 19104, United States
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35
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Bayati P, Popescu MN, Uspal WE, Dietrich S, Najafi A. Dynamics near planar walls for various model self-phoretic particles. SOFT MATTER 2019; 15:5644-5672. [PMID: 31245803 DOI: 10.1039/c9sm00488b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
For chemically active particles suspended in a liquid solution and moving by self-phoresis, the dynamics near chemically inert, planar walls is studied theoretically by employing various choices for the activity function, i.e., the spatial distribution of the sites where various chemical reactions take place. We focus on the case of solutions composed of electrically neutral species. This analysis extends previous studies of the case that the chemical activity can be modeled effectively as the release of a "product" molecular species from parts of the surface of the particle by accounting for annihilation of the product molecules by chemical reactions, either on the rest of the surface of the particle or in the volume of the surrounding solution. We show that, for the models considered here, the emergence of "sliding" and "hovering" wall-bound states is a generic, robust feature. However, the details of these states, such as the range of parameters within which they occur, depend on the specific model for the activity function. Additionally, in certain cases there is a reversal of the direction of the motion compared to the one observed if the particle is far away from the wall. We have also studied the changes of the dynamics induced by a direct interaction between the particle and the wall by including a short-ranged repulsive component to the interaction in addition to the steric one (a procedure often employed in numerical simulations of active colloids). Upon increasing the strength of this additional component, while keeping its range fixed, significant qualitative changes occur in the phase portraits of the dynamics near the wall: for sufficiently strong short-ranged repulsion, the sliding steady states of the dynamics are transformed into hovering states. Furthermore, our studies provide evidence for an additional "oscillatory" wall-bound steady state of motion for chemically active particles due to a strong, short-ranged, and direct repulsion. This kind of particle translates along the wall at a distance from it which oscillates between a minimum and a maximum.
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Affiliation(s)
- Parvin Bayati
- Department of Physics, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan 45137-66731, Iran.
| | - Mihail N Popescu
- Max-Planck-Institut für Intelligente Systeme, Heisenbergstr. 3, D-70569 Stuttgart, Germany and IV. Institut für Theoretische Physik, Universität Stuttgart, Pfaffenwaldring 57, D-70569 Stuttgart, Germany
| | - William E Uspal
- Max-Planck-Institut für Intelligente Systeme, Heisenbergstr. 3, D-70569 Stuttgart, Germany and IV. Institut für Theoretische Physik, Universität Stuttgart, Pfaffenwaldring 57, D-70569 Stuttgart, Germany and Department of Mechanical Engineering, University of Hawai'i at Manoa, 2540 Dole Street, Holmes 302, Honolulu, HI 96822, USA
| | - S Dietrich
- Max-Planck-Institut für Intelligente Systeme, Heisenbergstr. 3, D-70569 Stuttgart, Germany and IV. Institut für Theoretische Physik, Universität Stuttgart, Pfaffenwaldring 57, D-70569 Stuttgart, Germany
| | - Ali Najafi
- Department of Physics, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan 45137-66731, Iran. and Research Center for Basic Sciences & Modern Technologies (RBST), Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan 45137-66731, Iran
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36
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Affiliation(s)
- P. Bayati
- Department of Physics, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan 45137-66731, Iran
| | - A. Najafi
- Department of Physics, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan 45137-66731, Iran
- Research Center for Basic Sciences & Modern Technologies (RBST), Institute for Advanced Studies in Basic Sciences, Zanjan, Iran
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37
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Chang F, van Ravensteijn BGP, Lacina KS, Kegel WK. Bifunctional Janus Spheres with Chemically Orthogonal Patches. ACS Macro Lett 2019; 8:714-718. [PMID: 35619528 DOI: 10.1021/acsmacrolett.9b00193] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Bifunctional Janus particles with patches carrying orthogonal surface functionalities that can be independently modified are widely seen as promising building blocks for the bottom-up assembly of functional materials due to their full compositional and geometrical programmability. However, synthesis of these colloids remains an elusive task as current scalable procedures are generally limited to monofunctional particles only. Herein, a scalable bulk wet-chemical synthetic method for fabricating bifunctional Janus particles following a two-step dispersion polymerization is developed. Patch formation on these colloids is driven by the spontaneous phase separation between a brominated outer shell and poly(propargyl acrylate) (p(PA)), formed after the seed particles were swollen with the corresponding monomer. The size ratio between the two patches is readily tunable by controlling the volumetric ratio between the feeding monomers. The distinct patches of these Janus particles carry chemical handles facilitating independent and orthogonal surface modification using Atom Transfer Radical Polymerization (ATRP) and thiol-yne Click chemistry for the brominated and alkyne-containing patches, respectively. The presented route toward bifunctional patchy spheres provides a versatile starting point for the development of bifunctional colloidal particles with tailored directional properties.
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Affiliation(s)
- Fuqiang Chang
- Van’t Hoff Laboratory for Physical and Colloid Chemistry, Debye Institute for Nanomaterials Science, Utrecht University, 3584 CH Utrecht, The Netherlands
| | | | - Kanvaly S. Lacina
- Van’t Hoff Laboratory for Physical and Colloid Chemistry, Debye Institute for Nanomaterials Science, Utrecht University, 3584 CH Utrecht, The Netherlands
| | - Willem K. Kegel
- Van’t Hoff Laboratory for Physical and Colloid Chemistry, Debye Institute for Nanomaterials Science, Utrecht University, 3584 CH Utrecht, The Netherlands
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38
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Wang X, Yang D, Liu M, Cao D, He N, Wang Z. Highly sensitive fluorescence biosensor for intracellular telomerase detection based on a single patchy gold/carbon nanosphere via the combination of nanoflare and hybridization chain reaction. Biosens Bioelectron 2019; 137:110-116. [PMID: 31085399 DOI: 10.1016/j.bios.2019.05.004] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Revised: 04/13/2019] [Accepted: 05/02/2019] [Indexed: 11/18/2022]
Abstract
How to in situ detect intracellular telomerase activity with high sensitivity still faces many challenges. This paper constructs a new fluorescence biosensing platform for the sensitive detection of intracellular telomerase activity via the combination of nanoflare and hybridization chain reaction (HCR)-based signal amplification on a single patchy gold/carbon nanosphere (PG/CNS), which has two or more distinct parts and allows hybridized-DNA (HS-DNA/Primer-DNA/Flare-DNA) and H1/H2-DNA (a pair of cross complementary DNA hairpins) to bind onto their surfaces via Au-S bond and electrostatic interaction, respectively. In the presence of telomerase, Primer-DNA (telomerase primer) extends at its 3' end to produce a telomeric repeated sequence, resulting in the release of Flare-DNA followed by the recovery of the fluorescence. Subsequently, the released Flare-DNA further initiates cross hybridization of H1 and H2 DNA from mimic-HCR system to amplify the fluorescence signal. The in vivo confocal microscopy studies demonstrate that resulting sensor can enter into the cancer cells such as A549 cells, and lead to the increase in luminescence, which is stronger than the sensor without the HCR-based signal amplification system. A linear relationship between the fluorescence intensity and the amount of A549 cells is observed, and the limit of detection of the sensor reaches about 280 A549 cells.
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Affiliation(s)
- Xiaoxiao Wang
- Pharmaceutical Research Center, Jiangsu Province Hi-Tech Key Laboratory for Biomedical Research, School of Chemistry and Chemical Engineering, Southeast University, Nanjing, Jiangsu, 211189, China
| | - Dandan Yang
- Pharmaceutical Research Center, Jiangsu Province Hi-Tech Key Laboratory for Biomedical Research, School of Chemistry and Chemical Engineering, Southeast University, Nanjing, Jiangsu, 211189, China
| | - Mei Liu
- Pharmaceutical Research Center, Jiangsu Province Hi-Tech Key Laboratory for Biomedical Research, School of Chemistry and Chemical Engineering, Southeast University, Nanjing, Jiangsu, 211189, China
| | - Dongwei Cao
- Department of Nephrology, Affiliated Drum Tower Hospital, Medical School of Nanjing University, Nanjing, 210008, China.
| | - Nongyue He
- School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, China.
| | - Zhifei Wang
- Pharmaceutical Research Center, Jiangsu Province Hi-Tech Key Laboratory for Biomedical Research, School of Chemistry and Chemical Engineering, Southeast University, Nanjing, Jiangsu, 211189, China.
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39
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Zhai W, Song Y, Gao Z, Fan JB, Wang S. Precise Synthesis of Polymer Particles Spanning from Anisotropic Janus Particles to Heterogeneous Nanoporous Particles. Macromolecules 2019. [DOI: 10.1021/acs.macromol.9b00199] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Wenzhong Zhai
- Key Laboratory of Biomedical Polymers of Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072 Hubei, P. R. China
- CAS Key Laboratory of Bio-Inspired Materials and Interfacial Science, CAS Center for Excellence in Nanoscience, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Yongyang Song
- CAS Key Laboratory of Bio-Inspired Materials and Interfacial Science, CAS Center for Excellence in Nanoscience, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Zhinong Gao
- Key Laboratory of Biomedical Polymers of Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072 Hubei, P. R. China
| | - Jun-Bing Fan
- CAS Key Laboratory of Bio-Inspired Materials and Interfacial Science, CAS Center for Excellence in Nanoscience, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Shutao Wang
- CAS Key Laboratory of Bio-Inspired Materials and Interfacial Science, CAS Center for Excellence in Nanoscience, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
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40
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One-pot synthesis of mushroom-shaped polymeric Janus particles by soap-free emulsion copolymerization. Eur Polym J 2019. [DOI: 10.1016/j.eurpolymj.2019.01.068] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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41
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Kirillova A, Marschelke C, Synytska A. Hybrid Janus Particles: Challenges and Opportunities for the Design of Active Functional Interfaces and Surfaces. ACS APPLIED MATERIALS & INTERFACES 2019; 11:9643-9671. [PMID: 30715834 DOI: 10.1021/acsami.8b17709] [Citation(s) in RCA: 69] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Janus particles are a unique class of multifunctional patchy particles combining two dissimilar chemical or physical functionalities at their opposite sides. The asymmetry characteristic for Janus particles allows them to self-assemble into sophisticated structures and materials not attainable by their homogeneous counterparts. Significant breakthroughs have recently been made in the synthesis of Janus particles and the understanding of their assembly. Nevertheless, the advancement of their applications is still a challenging field. In this Review, we highlight recent developments in the use of Janus particles as building blocks for functional materials. We provide a brief introduction into the synthetic strategies for the fabrication of JPs and their properties and assembly, outlining the existing challenges. The focus of this Review is placed on the applications of Janus particles for active interfaces and surfaces. Active functional interfaces are created owing to the stabilization efficiency of Janus particles combined with their capability for interface structuring and functionalizing. Moreover, Janus particles can be employed as building blocks to fabricate active functional surfaces with controlled chemical and topographical heterogeneity. Ultimately, we will provide implications for the rational design of multifunctional materials based on Janus particles.
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Affiliation(s)
- Alina Kirillova
- Department of Mechanical Engineering and Materials Science, Edmund T. Pratt Jr. School of Engineering , Duke University , Durham , North Carolina 27708 , United States
| | - Claudia Marschelke
- Leibniz-Institut für Polymerforschung Dresden e.V. , Hohe Strasse 6 , 01069 Dresden , Germany
- Fakultät Mathematik und Naturwissenschaften , Technische Universität Dresden , 01062 Dresden , Germany
| | - Alla Synytska
- Leibniz-Institut für Polymerforschung Dresden e.V. , Hohe Strasse 6 , 01069 Dresden , Germany
- Fakultät Mathematik und Naturwissenschaften , Technische Universität Dresden , 01062 Dresden , Germany
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42
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Shaghaghi B, Khoee S, Bonakdar S. Preparation of multifunctional Janus nanoparticles on the basis of SPIONs as targeted drug delivery system. Int J Pharm 2019; 559:1-12. [PMID: 30664992 DOI: 10.1016/j.ijpharm.2019.01.020] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2018] [Revised: 12/29/2018] [Accepted: 01/09/2019] [Indexed: 01/28/2023]
Abstract
Passing the Blood-Brain-Barrier (BBB) is a challenging aspect in nanomedicine. Utilizing surfactant particles is reported to be a potent strategy for easier BBB penetration. On the other hand, loading different functional molecules on a single particle is therapeutically and economically beneficial. In this study, multifunctional amphiphilic Janus nanoparticles have been prepared on the basis of superparamagnetic iron oxide nanoparticles. This Janus platform is armed with folic acid targeting agent and Doxorubicin (DOX) drug that have been conjugated on different sides of the nanoparticles. DOX has been conjugated via imine bond that makes these particles pH sensitive. Chemo-physical characters, in-vitro drug release pattern and toxicity of nanoparticles on rat C6 glioma cell line were studied that confirmed the preparation and pH-dependent behavior of nanoparticles. Microscopy observations showed the Janus morphology of nanoparticles and their cell penetration behavior. Prepared Janus nanoparticle can be utilized as a multifunctional nanomedicine platform for brain cancer treatment.
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Affiliation(s)
- Behrad Shaghaghi
- Polymer Laboratory, School of Chemistry, College of Science, University of Tehran, PO Box 14155 6455, Tehran, Iran
| | - Sepideh Khoee
- Polymer Laboratory, School of Chemistry, College of Science, University of Tehran, PO Box 14155 6455, Tehran, Iran.
| | - Shahin Bonakdar
- National Cell Bank of Iran, Pasteur Institute of Iran, Tehran, Iran
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43
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Luo D, Zhang F, Zheng H, Ren Z, Jiang L, Ren Z. Electrostatic-attraction-induced high internal phase emulsion for large-scale synthesis of amphiphilic Janus nanosheets. Chem Commun (Camb) 2019; 55:1318-1321. [DOI: 10.1039/c8cc08892f] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A facile and scalable method to produce amphiphilic Janus nanosheets in large quantities was reported by interfacial reaction via generating a high internal phase emulsion.
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Affiliation(s)
- Dan Luo
- Department of Physics and TcSUH
- University of Houston
- Houston
- USA
| | - Fanghao Zhang
- Department of Physics and TcSUH
- University of Houston
- Houston
- USA
- Department of Chemistry
| | - Haotian Zheng
- Department of Electrical & Computer Engineering and Materials Science and Engineering Program
- University of Houston
- Houston
- USA
| | - Zhensong Ren
- Department of Physics and TcSUH
- University of Houston
- Houston
- USA
| | - Lili Jiang
- Department of Physics and TcSUH
- University of Houston
- Houston
- USA
| | - Zhifeng Ren
- Department of Physics and TcSUH
- University of Houston
- Houston
- USA
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44
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Sindoro M, Granick S. Ionic Janus Liquid Droplets Assembled and Propelled by Electric Field. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201810862] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Melinda Sindoro
- School of Materials Science & EngineeringNanyang Technological University 50 Nanyang Ave Singapore 639798 Singapore
| | - Steve Granick
- IBS Center for Soft and Living MatterInstitute of Basic Science Ulsan 44919 Republic of Korea
- Departments of Chemistry and PhysicsUNIST Ulsan 44919 Republic of Korea
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45
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Sindoro M, Granick S. Ionic Janus Liquid Droplets Assembled and Propelled by Electric Field. Angew Chem Int Ed Engl 2018; 57:16773-16776. [PMID: 30378736 DOI: 10.1002/anie.201810862] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2018] [Indexed: 11/06/2022]
Affiliation(s)
- Melinda Sindoro
- School of Materials Science & EngineeringNanyang Technological University 50 Nanyang Ave Singapore 639798 Singapore
| | - Steve Granick
- IBS Center for Soft and Living MatterInstitute of Basic Science Ulsan 44919 Republic of Korea
- Departments of Chemistry and PhysicsUNIST Ulsan 44919 Republic of Korea
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46
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Li X, Li JL, Huang WG, Zhang XZ, Zhang B, Cai T. Metalloporphyrin-bound Janus nanocomposites with dual stimuli responsiveness for nanocatalysis in living radical polymerization. NANOSCALE 2018; 10:19254-19261. [PMID: 30141816 DOI: 10.1039/c8nr05476b] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The capability to spatiotemporally regulate polymerization kinetics in response to dual external stimuli of light and magnetism offers exciting pathways to precisely manipulate polymer composition and sequence. Herein, we report a strategy that adopts snowman-shaped Fe3O4@aSiO2-click-ZnPTPP Janus nanocomposites with a high magnetization value (12.9 emu g-1) and stably confined but accessible catalytic metalloporphyrin moieties as the nanocatalysts for photo-induced electron transfer reversible addition-fragmentation chain transfer (PET-RAFT) polymerization. This method enables the synthesis of diverse polymeric structures from a large range of monomers using ultralow concentrations of nanocatalysts (less than 10 ppm) with simple modulation of light and magnetism. In addition, the nanocatalysts are found to be oxygen-tolerant, and they exhibit non-agglomeration during polymerization. Finally, repeated regeneration of the used nanocatalysts by magnetic extraction or facile centrifugation effectively reduces or even eliminates the contamination and/or decomposition on the final polymer products.
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Affiliation(s)
- Xue Li
- Key Laboratory of Biomedical Polymers of Ministry of Education, College of Chemistry and Molecular Science, Wuhan University, Wuhan, Hubei 430072, P. R. China.
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47
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Zheng H, Du W, Duan Y, Geng K, Deng J, Gao C. Biodegradable Anisotropic Microparticles for Stepwise Cell Adhesion and Preparation of Janus Cell Microparticles. ACS APPLIED MATERIALS & INTERFACES 2018; 10:36776-36785. [PMID: 30284813 DOI: 10.1021/acsami.8b14884] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The biomimetic anisotropic particles have different physicochemical properties on the opposite two sides, enabling diverse applications in emulsion, photonic display, and diagnosis. However, the traditional anisotropic particles have a very small size, ranging from submicrons to a few microns. The design and fabrication of anisotropic macron-sized particles with new structures and properties is still challenging. In this study, anisotropic polycaprolactone (PCL) microparticles well separated with each other were prepared by crystallization from the dilute PCL solution in a porous 3D gelatin template. They had fuzzy and smooth surfaces on each side, and a size as large as 70 μm. The fuzzy surface of the particle adsorbed significantly larger amount of proteins, and was more cell-attractive regardless of the cell types. The particles showed stronger affinity toward fibroblasts over hepatocytes, which paved a new way for cell isolation merely based on the surface morphology. After a successive seeding process, Janus cell microparticles with fibroblasts and endothelial cells (ECs) on each side were designed and obtained by making use of the anisotropic surface morphology, which showed significant difference in EC functions in terms of prostacyclin (PGl2) secretion, demonstrating the unique and appealing functions of this type of anisotropic microspheres.
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Affiliation(s)
- Honghao Zheng
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering , Zhejiang University , Hangzhou 310027 , China
| | - Wang Du
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering , Zhejiang University , Hangzhou 310027 , China
| | - Yiyuan Duan
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering , Zhejiang University , Hangzhou 310027 , China
- Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cell and Regenerative Medicine , Zhejiang University , Hangzhou 310058 , China
| | - Keyu Geng
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering , Zhejiang University , Hangzhou 310027 , China
| | - Jun Deng
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering , Zhejiang University , Hangzhou 310027 , China
| | - Changyou Gao
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering , Zhejiang University , Hangzhou 310027 , China
- Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cell and Regenerative Medicine , Zhejiang University , Hangzhou 310058 , China
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48
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Yang Y, Chen G, Thanneeru S, He J, Liu K, Nie Z. Synthesis and assembly of colloidal cuboids with tunable shape biaxiality. Nat Commun 2018; 9:4513. [PMID: 30375393 PMCID: PMC6207716 DOI: 10.1038/s41467-018-06975-8] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2018] [Accepted: 10/01/2018] [Indexed: 12/13/2022] Open
Abstract
The design and assembly of monodisperse colloidal particles not only advances the development of functional materials, but also provides colloidal model systems for understanding phase behaviors of molecules. This communication describes the gram-scale synthesis of highly uniform colloidal cuboids with tunable dimension and shape biaxiality and their molecular mesogen-like assembly into various mesophasic structures in pristine purity. The synthesis relies on the nanoemulsion-guided generation of ammonium sulfate crystals that template the subsequent silica coating. The shape of the cuboidal particles can be tuned from square platelike, to biaxial boardlike, and to rodlike by independently controlling the length, width and thickness of the particles. We demonstrated the assembly of the cuboidal colloids into highly pure mesoscopic liquid crystal phases, including smectic A, biaxial smectic A, crystal B, discotic, and columnar phases, as well as established a correlation between mesophasic formation and colloidal biaxiality in experiments.
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Affiliation(s)
- Yang Yang
- Department of Chemistry and Biochemistry, University of Maryland, College Park, MD, 20742, USA
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012, China
| | - Guangdong Chen
- Department of Chemistry and Biochemistry, University of Maryland, College Park, MD, 20742, USA
| | - Srinivas Thanneeru
- Department of Chemistry, Institute of Materials Sciences, University of Connecticut, Storrs, CT, 06269, USA
| | - Jie He
- Department of Chemistry, Institute of Materials Sciences, University of Connecticut, Storrs, CT, 06269, USA
| | - Kun Liu
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012, China.
| | - Zhihong Nie
- Department of Chemistry and Biochemistry, University of Maryland, College Park, MD, 20742, USA.
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Alameddine B, Baig N, Shetty S, Al-Mousawi S, Al-Sagheer F. Triptycene-containing Poly(vinylene sulfone) derivatives from a metal-free thiol-yne click polymerization followed by a mild oxidation reaction. POLYMER 2018. [DOI: 10.1016/j.polymer.2018.09.020] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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50
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Peng Q, Cong H, Yu B, Wei L, Mahmood K, Yuan H, Yang R, Zhang X, Wu Y. Preparation of polymeric Janus microparticles with hierarchically porous structure and enhanced anisotropy. J Colloid Interface Sci 2018; 522:144-150. [DOI: 10.1016/j.jcis.2018.03.066] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2017] [Revised: 03/16/2018] [Accepted: 03/20/2018] [Indexed: 12/20/2022]
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