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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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2
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Lin F, Qi Q, Zhang J, Zhou W, Zhang J, Fu P, Zhang X, Qiao X, Liu M, Pang X, Cui Z. From Unimolecular Template to Silver Nanocrystal Clusters: An Effective Strategy to Balance Antibacterial Activity and Cytotoxicity. ACS APPLIED MATERIALS & INTERFACES 2021; 13:39806-39818. [PMID: 34387459 DOI: 10.1021/acsami.1c07986] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Silver nanomaterials have attracted a great deal of interest due to their broad-spectrum antimicrobial activity. However, it is still challenging to balance the high antibacterial efficiency with low damage to biological cells of silver nanostructures, especially when the diameter decreases to less than 10 nm. Here, we developed a new type of Ag nanohybrid material via a unimolecular micelle template method, which presents amazing antibacterial activities and almost noncytotoxicity. First, water-soluble multiarm star-shaped brushlike copolymer α-CD-g-[(PEO40-g-PAA50)-b-PEO5]18 was precisely synthesized and its micelle behavior in different solvents was revealed. Then, nanocrystal clusters assembled by Ag grains (Ag@Template NCs) were prepared through an in situ redox route using the unimolecular micelle of α-CD-g-[(PEO40-g-PAA50)-b-PEO5]18 as the soft template, AgNO3 as a precursor, and tetrabutylammonium borohydride (TBAB) as the reducing agent. The overall size of the achieved Ag@Template NCs is controlled by the template structure at around 40 nm (Dh in DMF), and the size of the Ag grain can be easily regulated from ∼1 to ∼5 nm by adjusting the feeding ratio of AgNO3/acrylic acid (AA) units in the template from 1:10 to 1:1. Benefitting from the structural design of the template, all Ag@Template NCs prepared here exhibit excellent dispersibility and chemical stability in different aqueous environments (neutral, pH = 5.5, and 0.9% NaCl physiological saline solution), which play a crucial role in the long-term storage and potential application in a complex physiological environment. The antibacterial and cytotoxicity tests indicate that Ag@Template NCs display much better performance than Ag nanoparticles (Ag NPs), which have a comparable overall size of ∼25 nm. The inhibitory capability of Ag@Template NCs to bacteria strongly depends on the grain size. Specifically, the Ag@Template-1 NC assembled by the smallest grains (1.6 ± 0.3 nm) presents the best antibacterial activity. For E. coli (-), the MIC value is as low as 5 μg/mL (0.36 μg/mL of Ag), while for S. aureus (+), the value is around 10 μg/mL (0.72 μg/mL of Ag). The survival rate of L02 cells and lactate dehydrogenase assay together illustrate the low cytotoxicity possessed by the prepared Ag@Template NCs. Therefore, the proposed Ag@Template NC structure successfully resolves the high reactivity, instability, and fast oxidation issues of the ultrasmall Ag nanoparticles, and integrates high antibacterial efficiency and nontoxicity to biological cells into one platform, which implies its broad potential application in biomedicine.
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Affiliation(s)
- Fangke Lin
- School of Materials Science and Engineering, Henan Key Laboratory of Advanced Nylon Materials and Application, Zhengzhou University, Zhengzhou 450001, China
| | - Qianqian Qi
- School of Materials Science and Engineering, Henan Key Laboratory of Advanced Nylon Materials and Application, Zhengzhou University, Zhengzhou 450001, China
| | - Junle Zhang
- School of Materials Science and Engineering, Henan Key Laboratory of Advanced Nylon Materials and Application, Zhengzhou University, Zhengzhou 450001, China
| | - Wenjun Zhou
- School of Materials Science and Engineering, Henan Key Laboratory of Advanced Nylon Materials and Application, Zhengzhou University, Zhengzhou 450001, China
| | - Jiahui Zhang
- School of Materials Science and Engineering, Henan Key Laboratory of Advanced Nylon Materials and Application, Zhengzhou University, Zhengzhou 450001, China
| | - Peng Fu
- School of Materials Science and Engineering, Henan Key Laboratory of Advanced Nylon Materials and Application, Zhengzhou University, Zhengzhou 450001, China
| | - Xiaomeng Zhang
- School of Materials Science and Engineering, Henan Key Laboratory of Advanced Nylon Materials and Application, Zhengzhou University, Zhengzhou 450001, China
| | - Xiaoguang Qiao
- School of Materials Science and Engineering, Henan Key Laboratory of Advanced Nylon Materials and Application, Zhengzhou University, Zhengzhou 450001, China
| | - Minying Liu
- School of Materials Science and Engineering, Henan Key Laboratory of Advanced Nylon Materials and Application, Zhengzhou University, Zhengzhou 450001, China
| | - Xinchang Pang
- School of Materials Science and Engineering, Henan Key Laboratory of Advanced Nylon Materials and Application, Zhengzhou University, Zhengzhou 450001, China
| | - Zhe Cui
- School of Materials Science and Engineering, Henan Key Laboratory of Advanced Nylon Materials and Application, Zhengzhou University, Zhengzhou 450001, China
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3
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Jiang F, Ren J, Gao Y, Wang J, Zhao Y, Dai F. Legumain-induced intracerebrally crosslinked vesicles for suppressing efflux transport of Alzheimer's disease multi-drug nanosystem. Bioact Mater 2021; 6:1750-1764. [PMID: 33313452 PMCID: PMC7718144 DOI: 10.1016/j.bioactmat.2020.11.024] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Revised: 11/07/2020] [Accepted: 11/13/2020] [Indexed: 12/28/2022] Open
Abstract
Brain barrier is both a protective permeability hurdle and a limitation site where therapeutic agents are excluded to enter the target region. Designing drug vehicle to overcome this notorious barrier bottle is challenging. Herein, we construct a stimuli-responsive self-assembled nanovesicle that delivers water-soluble drugs to prevent the efflux transport of brain barriers by responding to the endogenously occurring signals in Alzheimer's disease (AD) brain microenvironment. Once stimuli-responsive vesicles are accumulated in intracerebrally, the intrinsically occurring legumain endopeptidase cleaves the Ac-Ala-Ala-Asn-Cys-Asp (AK) short peptide on the drug vesicles to expose the 1,2 thiol amino group to cyclize with the cyano groups on 2-cyano-6-aminobenzothiazole (CABT) of the chaperone vesicles, thus triggering the formation of cross-linked micrometre-scale vesicles. Such a structural alteration completely prevents further brain barriers efflux. The superior neuroprotective capacity of cross-linked vesicles is validated in senescence accelerated mouse prone 8 (SAMP8). This smart multi-drug delivery vesicle is promising to serve as a powerful system for AD treatment and can be adapted for the therapy of other central nervous system (CNS) disorders.
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Affiliation(s)
- Fuxin Jiang
- School of Material Science and Engineering, Tianjin Key Laboratory of Separation Membranes and Membrane Processes, National Center for International Joint Research on Separation Membranes, Tiangong University, Tianjin, 300387, China
| | - Jian Ren
- School of Material Science and Engineering, Tianjin Key Laboratory of Separation Membranes and Membrane Processes, National Center for International Joint Research on Separation Membranes, Tiangong University, Tianjin, 300387, China
| | - Yachai Gao
- School of Material Science and Engineering, Tianjin Key Laboratory of Separation Membranes and Membrane Processes, National Center for International Joint Research on Separation Membranes, Tiangong University, Tianjin, 300387, China
| | - Jinna Wang
- School of Material Science and Engineering, Tianjin Key Laboratory of Separation Membranes and Membrane Processes, National Center for International Joint Research on Separation Membranes, Tiangong University, Tianjin, 300387, China
| | - Yiping Zhao
- School of Material Science and Engineering, Tianjin Key Laboratory of Separation Membranes and Membrane Processes, National Center for International Joint Research on Separation Membranes, Tiangong University, Tianjin, 300387, China
| | - Fengying Dai
- School of Material Science and Engineering, Tianjin Key Laboratory of Separation Membranes and Membrane Processes, National Center for International Joint Research on Separation Membranes, Tiangong University, Tianjin, 300387, China
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Abstract
Bioactive core–shell nanoparticles (CSNPs) offer the unique ability for protein/enzyme functionality in non-native environments. For many decades, researchers have sought to develop synthetic materials which mimic the efficiency and catalytic power of bioactive macromolecules such as enzymes and proteins. This research studies a self-assembly method in which functionalized, polymer-core/protein-shell nanoparticles are prepared in mild conditions. Transmission electron microscopy (TEM) and dynamic light scattering (DLS) techniques were utilized to analyze the size and distribution of the CSNPs. The methods outlined in this research demonstrate a mild, green chemistry synthesis route for CSNPs which are highly tunable and allow for enzyme/protein functionality in non-native conditions.
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5
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Yue X, Geng Z, Yan N, Jiang W. Hierarchical self-assembly of a PS-b-P4VP/PS-b-PNIPAM mixture into multicompartment micelles and their response to two-dimensional confinement. Phys Chem Chem Phys 2020; 22:1194-1203. [DOI: 10.1039/c9cp05180e] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Finely tuned synergistic effects among different blocks could realize intriguing hierarchical self-assembly of block copolymers and such hierarchical self-assembly could be manipulated by cylindrical confinement to tune the structures of assemblies.
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Affiliation(s)
- Xuan Yue
- State Key Laboratory of Polymer Physics and Chemistry
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022
- China
| | - Zhen Geng
- State Key Laboratory of Polymer Physics and Chemistry
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022
- China
| | - Nan Yan
- State Key Laboratory of Polymer Physics and Chemistry
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022
- China
| | - Wei Jiang
- State Key Laboratory of Polymer Physics and Chemistry
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022
- China
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6
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Gan Y, Wang ZD, Lu ZX, Shi Y, Tan HY, Yan CF. Control on the Morphology of ABA Amphiphilic Triblock Copolymer Micelles in Dioxane/Water Mixture Solvent. CHINESE JOURNAL OF POLYMER SCIENCE 2018. [DOI: 10.1007/s10118-018-2066-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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7
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Wang Z, Wang H, Cheng M, Li C, Faller R, Sun S, Hu S. Controllable Multigeometry Nanoparticles via Cooperative Assembly of Amphiphilic Diblock Copolymer Blends with Asymmetric Architectures. ACS NANO 2018; 12:1413-1419. [PMID: 29385331 DOI: 10.1021/acsnano.7b07777] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Multigeometry nanoparticles with high complexity in composition and structure have attracted significant attention for enhanced functionality. We assess a simple but versatile strategy to construct hybrid nanoparticles with subdivided geometries through the cooperative assembly of diblock copolymer blends with asymmetric architectures. We report the formation of multicompartmental, vesicular, cylindrical, and spherical structures from pure AB systems. Then, we explore the assemblies of binary AB/AC blends, where the two incompatible, hydrophobic diblock copolymers subdivide into self-assembled local geometries, and the complexity of the obtained morphologies increases. We expand the strategy to ternary AB/AC/AD systems by tuning the effect of phase separation of different hydrophobic domains on the surface or internal region of the nanoparticle. The kinetic control of the coassembly in the initial stage is crucial for controlling the final morphology. The interactions of copolymers with different block lengths and chemistries enable the stabilization of interfaces, rims and ends of subdomains in the hybrid multigeometry nanoparticles. With further exploration of size and shape, the dependence of local geometry on the volume fraction is discussed. We show an efficient approach for controllable multigeometry nanoparticle construction that will be useful for multifunctional and hierarchical nanomaterials.
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Affiliation(s)
| | | | | | | | - Roland Faller
- Department of Chemical Engineering, UC Davis , Davis, California 95616, United States
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8
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Pijpers IAB, Abdelmohsen LKEA, Williams DS, van Hest JCM. Morphology Under Control: Engineering Biodegradable Stomatocytes. ACS Macro Lett 2017; 6:1217-1222. [PMID: 29214115 PMCID: PMC5708263 DOI: 10.1021/acsmacrolett.7b00723] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2017] [Accepted: 10/17/2017] [Indexed: 12/27/2022]
Abstract
Biodegradable nanoarchitectures, with well-defined morphological features, are of great importance for nanomedical research; however, understanding (and thereby engineering) their formation is a substantial challenge. Herein, we uncover the supramolecular potential of PEG-PDLLA copolymers by exploring the physicochemical determinants that result in the transformation of spherical polymersomes into stomatocytes. To this end, we have engineered blended polymersomes (comprising copolymers with varying lengths of PEG), which undergo solvent-dependent reorganization inducing negative spontaneous membrane curvature. Under conditions of anisotropic solvent composition across the PDLLA membrane, facilitated by the dialysis methodology, we demonstrate osmotically induced stomatocyte formation as a consequence of changes in PEG solvation, inducing negative spontaneous membrane curvature. Controlled formation of unprecedented, biodegradable stomatocytes represents the unification of supramolecular engineering with the theoretical understanding of shape transformation phenomena.
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Affiliation(s)
- Imke A. B. Pijpers
- Eindhoven University of Technology, P.O. Box 513
(STO 3.31), 5600MB Eindhoven, The Netherlands
| | | | - David S. Williams
- Eindhoven University of Technology, P.O. Box 513
(STO 3.31), 5600MB Eindhoven, The Netherlands
- Department
of Chemistry, Swansea University, Swansea SA2 8PP, United Kingdom
| | - Jan C. M. van Hest
- Eindhoven University of Technology, P.O. Box 513
(STO 3.31), 5600MB Eindhoven, The Netherlands
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9
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Wang Z, Sun S, Li C, Hu S, Faller R. Controllable multicompartment morphologies from cooperative self-assembly of copolymer-copolymer blends. SOFT MATTER 2017; 13:5877-5887. [PMID: 28766653 DOI: 10.1039/c7sm01194f] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Multicompartment nanostructures, such as microcapsules with clearly separated shell and core, are not easily accessible by conventional block copolymer self-assembly. We assess a versatile computational strategy through cooperative assembly of diblock copolymer blends to generate spherical and cylindrical compartmentalized micelles with intricate structures and morphologies. The co-assembly strategy combines the advantages of polymer blending and incompatibility-induced phase separation. Following this strategy, various nanoassemblies of pure AB, binary AB/AC and ternary AB/AC/AD systems such as compartmentalized micelles with sponge-like, Janus, capsule-like and onion-like morphologies can be obtained. The formation and structural adjustment of microcapsule micelles, in which the shell or core can be occupied by either pure or mixed diblock copolymers, were explored. The mechanism involving the separation of shell and core copolymers is attributed to the stretching force differences of copolymers which drive the arrangement of different copolymers in a pathway to minimize the total interfacial energy. Moreover, by adjusting block interactions, an efficient approach is exhibited for regulating the shell or core composition and morphology in microcapsule micelles, such as the transition from the "pure shell/mixed core" morphology to the "mixed shell/pure core" morphology in the AB/AC/AD micelle. This mesoscale simulation study identifies the key factors governing co-assembly of diblock copolymer blends and provides bottom-up insights towards the design and optimization of new multicompartment micelles.
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Affiliation(s)
- Zhikun Wang
- College of Science, China University of Petroleum (East China), Qingdao 266580, Shandong, China.
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10
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Wang ZD, Yan CF, Huang Y, Yi LQ. Dependence of size and morphology on shear flow for PS-based amphiphilic block copolymer micelles in aqueous solution. CHINESE JOURNAL OF POLYMER SCIENCE 2017. [DOI: 10.1007/s10118-017-1927-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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11
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Morphology Control of Ni(II)-NTA-End-Functionalized Block Copolymer and Bio-Conjugation through Metal-Ligand Complex. Polymers (Basel) 2017; 9:polym9040144. [PMID: 30970824 PMCID: PMC6432091 DOI: 10.3390/polym9040144] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2017] [Revised: 04/11/2017] [Accepted: 04/17/2017] [Indexed: 11/16/2022] Open
Abstract
This study demonstrates the synthesis of an amphiphilic block copolymer, Ni2+-nitrilotiracetic acid-end-functionalized-poly(poly(ethylene glycol)methyl ether methacrylate)-block-polystyrene (NTA-p(PEGMA-b-St)), morphology control via their self-assembly behavior and reversible bioconjugation of hexahistidine-tagged green fluorescent protein (His₆-GFP) onto the surfaces of polymeric vesicles through nitrilotriacetic acid (NTA)-Ni2+-His interaction. First, the t-boc-protected-NTA-p(PEGMA-b-St) was synthesized by atom transfer radical polymerization. After the removal of the t-boc protecting group, the NTA group of the polymer was complexed with Ni2+. To induce self-assembly, water was added as a selective solvent to the solution of the copolymer in tetrahydrofuran (THF). Varying the water content of the solution resulted in various morphologies including spheres, lamellas and vesicles. Finally, polymeric vesicles decorated with green fluorescent protein (GFP) on their surfaces were prepared by the addition of His₆-GFP into the vesicles solution. Reversibility of the binding between vesicles and His₆-GFP was confirmed with a fluorescent microscope.
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12
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Geng Z, Han Y, Jiang W. Structural transformation of vesicles formed by a polystyrene-b-poly(acrylic acid)/polystyrene-b-poly(4-vinyl pyridine) mixture: from symmetric to asymmetric membranes. SOFT MATTER 2017; 13:2634-2642. [PMID: 28327712 DOI: 10.1039/c7sm00255f] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Asymmetric vesicles with different inner and outer corona compositions are applicable in microreactors, drug delivery, and biomimics because of their unique functions in membrane permeability and protein localization. In this study, we develop a novel approach to construct asymmetric vesicles and demonstrate the first structural transformation of polymeric vesicles from symmetric to asymmetric membranes. Experimental results and Monte Carlo simulation results clearly reveal that increased intercorona repulsion and enhanced hydrophobic chain mobility are essential to realize this transformation. Moreover, similar transformation processes are observed where either HCl or NaOH is added to change the intercorona interaction. This finding indicates that the observed structural transformation is dominated by physical interactions rather than chemical environment. The constructed asymmetric vesicles can be selectively decorated with gold nanoparticles on the outer corona. This study introduces a novel approach to prepare asymmetric vesicles and provides insights into the mechanism underlying the structural transformation of polymeric vesicles from symmetric to asymmetric membranes.
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Affiliation(s)
- Zhen Geng
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People's Republic of China. and University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Yuanyuan Han
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People's Republic of China.
| | - Wei Jiang
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People's Republic of China.
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13
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Yuan B, He X, Qu Y, Gao C, Eiser E, Zhang W. In situ synthesis of a self-assembled AB/B blend of poly(ethylene glycol)-b-polystyrene/polystyrene by dispersion RAFT polymerization. Polym Chem 2017. [DOI: 10.1039/c7py00339k] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A diblock-copolymer/homopolymer self-assembled blend was synthesized through dispersion RAFT polymerization, and its morphology changed with a decreasing ratio of diblock-copolymer/homopolymer.
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Affiliation(s)
- Bing Yuan
- Key Laboratory of Functional Polymer Materials of the Ministry of Education
- Institute of Polymer Chemistry
- College of Chemistry
- Nankai University
- Tianjin 300071
| | - Xin He
- Key Laboratory of Functional Polymer Materials of the Ministry of Education
- Institute of Polymer Chemistry
- College of Chemistry
- Nankai University
- Tianjin 300071
| | - Yaqing Qu
- Key Laboratory of Functional Polymer Materials of the Ministry of Education
- Institute of Polymer Chemistry
- College of Chemistry
- Nankai University
- Tianjin 300071
| | - Chengqiang Gao
- Key Laboratory of Functional Polymer Materials of the Ministry of Education
- Institute of Polymer Chemistry
- College of Chemistry
- Nankai University
- Tianjin 300071
| | - Erika Eiser
- Cavendish Laboratory
- University of Cambridge
- Cambridge CB3 0HE
- UK
| | - Wangqing Zhang
- Key Laboratory of Functional Polymer Materials of the Ministry of Education
- Institute of Polymer Chemistry
- College of Chemistry
- Nankai University
- Tianjin 300071
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14
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Ulasevich SA, Brezesinski G, Möhwald H, Fratzl P, Schacher FH, Poznyak SK, Andreeva DV, Skorb EV. Light-Induced Water Splitting Causes High-Amplitude Oscillation of pH-Sensitive Layer-by-Layer Assemblies on TiO2. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201604359] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
| | - Gerald Brezesinski
- Max Planck Institute of Colloids and Interfaces; Am Mühlenberg 1 14424 Potsdam Germany
| | - Helmuth Möhwald
- Max Planck Institute of Colloids and Interfaces; Am Mühlenberg 1 14424 Potsdam Germany
| | - Peter Fratzl
- Max Planck Institute of Colloids and Interfaces; Am Mühlenberg 1 14424 Potsdam Germany
| | - Felix H. Schacher
- Friedrich-Schiller-Universität Jena; Institut für Organische Chemie und Makromolekulare Chemie; Humboldtstrasse 10 Germany), Jena Center for Soft Matter (JCSM), Friedrich-Schiller-Universität Jena Philosophenweg 7 07743 Jena Germany
| | - Sergey K. Poznyak
- The Research Institute for Physical Chemical Problems; Belarusian State University; 220030 Minsk Belarus
| | - Daria V. Andreeva
- Center for Soft and Living Matter; Institute of basic science, Ulsan National Institute of Science and Technology; 44919 Ulsan Republic of Korea
| | - Ekaterina V. Skorb
- Max Planck Institute of Colloids and Interfaces; Am Mühlenberg 1 14424 Potsdam Germany
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15
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Ulasevich SA, Brezesinski G, Möhwald H, Fratzl P, Schacher FH, Poznyak SK, Andreeva DV, Skorb EV. Light-Induced Water Splitting Causes High-Amplitude Oscillation of pH-Sensitive Layer-by-Layer Assemblies on TiO2. Angew Chem Int Ed Engl 2016; 55:13001-13004. [DOI: 10.1002/anie.201604359] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2016] [Indexed: 01/31/2023]
Affiliation(s)
| | - Gerald Brezesinski
- Max Planck Institute of Colloids and Interfaces; Am Mühlenberg 1 14424 Potsdam Germany
| | - Helmuth Möhwald
- Max Planck Institute of Colloids and Interfaces; Am Mühlenberg 1 14424 Potsdam Germany
| | - Peter Fratzl
- Max Planck Institute of Colloids and Interfaces; Am Mühlenberg 1 14424 Potsdam Germany
| | - Felix H. Schacher
- Friedrich-Schiller-Universität Jena; Institut für Organische Chemie und Makromolekulare Chemie; Humboldtstrasse 10 Germany), Jena Center for Soft Matter (JCSM), Friedrich-Schiller-Universität Jena Philosophenweg 7 07743 Jena Germany
| | - Sergey K. Poznyak
- The Research Institute for Physical Chemical Problems; Belarusian State University; 220030 Minsk Belarus
| | - Daria V. Andreeva
- Center for Soft and Living Matter; Institute of basic science, Ulsan National Institute of Science and Technology; 44919 Ulsan Republic of Korea
| | - Ekaterina V. Skorb
- Max Planck Institute of Colloids and Interfaces; Am Mühlenberg 1 14424 Potsdam Germany
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16
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Černochová Z, Bogomolova A, Borisova OV, Filippov SK, Černoch P, Billon L, Borisov OV, Štěpánek P. Thermodynamics of the multi-stage self-assembly of pH-sensitive gradient copolymers in aqueous solutions. SOFT MATTER 2016; 12:6788-6798. [PMID: 27451979 DOI: 10.1039/c6sm01105e] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The self-assembly thermodynamics of pH-sensitive di-block and tri-block gradient copolymers of acrylic acid and styrene was studied for the first time using isothermal titration calorimetry (ITC) and dynamic light scattering (DLS) performed at varying pH. We were able to monitor each step of micellization as a function of decreasing pH. The growth of micelles is a multi-stage process that is pH dependent with several exothermic and endothermic components. The first step of protonation of the acrylic acid monomer units was accompanied mainly by conformational changes and the beginning of self-assembly. In the second stage of self-assembly, the micelles become larger and the number of micelles becomes smaller. While solution acidity increases, the isothermal calorimetry data show a broad deep minimum corresponding to an exothermic process attributed to an increase in the size of hydrophobic domains and an increase in the structure's hydrophobicity. The minor change in heat capacity (ΔCp) confirms the structural changes during this exothermic process. The exothermic process terminates deionization of acrylic acid. The pH-dependence of the ζ-potential of the block gradient copolymer micelles exhibits a plateau in the regime corresponding to the pH-controlled variation of the micellar dimensions. The onset of micelle formation and the solubility of the gradient copolymers were found to be dependent on the length of the gradient block.
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Affiliation(s)
- Zulfiya Černochová
- Institute of Macromolecular Chemistry AS CR, v.v.i., Heyrovského nám. 2, CZ-162 06 Praha 6, Czech Republic.
| | - Anna Bogomolova
- Institute of Macromolecular Chemistry AS CR, v.v.i., Heyrovského nám. 2, CZ-162 06 Praha 6, Czech Republic.
| | - Olga V Borisova
- UPPA, CNRS UMR 5254 IPREM Equipe de Physique et Chimie des Polymères, Pau, France
| | - Sergey K Filippov
- Institute of Macromolecular Chemistry AS CR, v.v.i., Heyrovského nám. 2, CZ-162 06 Praha 6, Czech Republic.
| | - Peter Černoch
- Institute of Macromolecular Chemistry AS CR, v.v.i., Heyrovského nám. 2, CZ-162 06 Praha 6, Czech Republic.
| | - Laurent Billon
- UPPA, CNRS UMR 5254 IPREM Equipe de Physique et Chimie des Polymères, Pau, France
| | - Oleg V Borisov
- UPPA, CNRS UMR 5254 IPREM Equipe de Physique et Chimie des Polymères, Pau, France and St.Petersburg National Research University of Information Technologies, Mechanics and Optics, 197101, St.Petersburg, Russia
| | - Petr Štěpánek
- Institute of Macromolecular Chemistry AS CR, v.v.i., Heyrovského nám. 2, CZ-162 06 Praha 6, Czech Republic.
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17
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Sprouse D, Jiang Y, Laaser JE, Lodge TP, Reineke TM. Tuning Cationic Block Copolymer Micelle Size by pH and Ionic Strength. Biomacromolecules 2016; 17:2849-59. [DOI: 10.1021/acs.biomac.6b00654] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Dustin Sprouse
- Department of Chemistry, and ‡Department of Chemical Engineering & Materials Science, University of Minnesota, 207 Pleasant Street SE, Minneapolis, Minnesota 55455, United States
| | - Yaming Jiang
- Department of Chemistry, and ‡Department of Chemical Engineering & Materials Science, University of Minnesota, 207 Pleasant Street SE, Minneapolis, Minnesota 55455, United States
| | - Jennifer E. Laaser
- Department of Chemistry, and ‡Department of Chemical Engineering & Materials Science, University of Minnesota, 207 Pleasant Street SE, Minneapolis, Minnesota 55455, United States
| | - Timothy P. Lodge
- Department of Chemistry, and ‡Department of Chemical Engineering & Materials Science, University of Minnesota, 207 Pleasant Street SE, Minneapolis, Minnesota 55455, United States
| | - Theresa M. Reineke
- Department of Chemistry, and ‡Department of Chemical Engineering & Materials Science, University of Minnesota, 207 Pleasant Street SE, Minneapolis, Minnesota 55455, United States
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18
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Gao C, Wu J, Zhou H, Qu Y, Li B, Zhang W. Self-Assembled Blends of AB/BAB Block Copolymers Prepared through Dispersion RAFT Polymerization. Macromolecules 2016. [DOI: 10.1021/acs.macromol.6b00771] [Citation(s) in RCA: 64] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
| | - Jiaping Wu
- School
of Physics, Nankai University, Tianjin 300071, China
| | | | | | - Baohui Li
- School
of Physics, Nankai University, Tianjin 300071, China
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19
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Geng Z, Cheng Z, Zhu Y, Jiang W. Controllable Cooperative Self-Assembly of PS-b-PAA/PS-b-P4VP Mixture by Tuning the Intercorona Interaction. J Phys Chem B 2016; 120:5527-33. [DOI: 10.1021/acs.jpcb.6b00273] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Zhen Geng
- State
Key Laboratory of Polymer Physics and Chemistry, Changchun Institute
of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People’s Republic of China
- University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
| | - Zhongkai Cheng
- School
of Life Sciences, Jilin University, Changchun 130022, People’s Republic of China
| | - Yutian Zhu
- State
Key Laboratory of Polymer Physics and Chemistry, Changchun Institute
of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People’s Republic of China
| | - Wei Jiang
- State
Key Laboratory of Polymer Physics and Chemistry, Changchun Institute
of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People’s Republic of China
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20
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Nguyen D, Adnan NNM, Oliver S, Boyer C. The Interaction of CORM‐2 with Block Copolymers Containing Poly(4‐vinylpyridine): Macromolecular Scaffolds for Carbon Monoxide Delivery in Biological Systems. Macromol Rapid Commun 2016; 37:739-44. [DOI: 10.1002/marc.201500755] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2015] [Revised: 02/04/2016] [Indexed: 12/31/2022]
Affiliation(s)
- Diep Nguyen
- Centre for Advanced Macromolecular Design (CAMD) School of Chemical Engineering University of New South WalesSydney NSW 2052 Australia
| | - Nik Nik M. Adnan
- Centre for Advanced Macromolecular Design (CAMD) School of Chemical Engineering University of New South WalesSydney NSW 2052 Australia
| | - Susan Oliver
- Centre for Advanced Macromolecular Design (CAMD) School of Chemical Engineering University of New South WalesSydney NSW 2052 Australia
- Australian Centre for Nanomedicine (ACN) University of New South Wales Sydney NSW 2052 Australia
| | - Cyrille Boyer
- Centre for Advanced Macromolecular Design (CAMD) School of Chemical Engineering University of New South WalesSydney NSW 2052 Australia
- Australian Centre for Nanomedicine (ACN) University of New South Wales Sydney NSW 2052 Australia
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21
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Moreno N, Nunes SP, Peinemann KV, Calo VM. Topology and Shape Control for Assemblies of Block Copolymer Blends in Solution. Macromolecules 2015. [DOI: 10.1021/acs.macromol.5b01891] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Nicolas Moreno
- Biological and Environmental Science and Engineering Division, ‡Center for Numerical Porous Media, §Advanced Membranes and Porous Material Center, and ∥Earth Science & Engineering and Applied Mathematics & Computational Science, King Abdullah University of Science and Technology, Thuwal, Makkah, Saudi Arabia 23955-6900
| | - Suzana P. Nunes
- Biological and Environmental Science and Engineering Division, ‡Center for Numerical Porous Media, §Advanced Membranes and Porous Material Center, and ∥Earth Science & Engineering and Applied Mathematics & Computational Science, King Abdullah University of Science and Technology, Thuwal, Makkah, Saudi Arabia 23955-6900
| | - Klaus-Viktor Peinemann
- Biological and Environmental Science and Engineering Division, ‡Center for Numerical Porous Media, §Advanced Membranes and Porous Material Center, and ∥Earth Science & Engineering and Applied Mathematics & Computational Science, King Abdullah University of Science and Technology, Thuwal, Makkah, Saudi Arabia 23955-6900
| | - Victor M. Calo
- Biological and Environmental Science and Engineering Division, ‡Center for Numerical Porous Media, §Advanced Membranes and Porous Material Center, and ∥Earth Science & Engineering and Applied Mathematics & Computational Science, King Abdullah University of Science and Technology, Thuwal, Makkah, Saudi Arabia 23955-6900
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22
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Yu H, Qiu X, Moreno N, Ma Z, Calo VM, Nunes SP, Peinemann KV. Self-Assembled Asymmetric Block Copolymer Membranes: Bridging the Gap from Ultra- to Nanofiltration. Angew Chem Int Ed Engl 2015; 54:13937-41. [DOI: 10.1002/anie.201505663] [Citation(s) in RCA: 105] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2015] [Indexed: 11/11/2022]
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23
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Yu H, Qiu X, Moreno N, Ma Z, Calo VM, Nunes SP, Peinemann K. Self‐Assembled Asymmetric Block Copolymer Membranes: Bridging the Gap from Ultra‐ to Nanofiltration. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201505663] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Haizhou Yu
- Advanced Membranes and Porous Materials Center, 4700 King Abdullah University of Science and Technology (KAUST), Thuwal 23955‐6900 (Kingdom of Saudi Arabia)
| | - Xiaoyan Qiu
- Advanced Membranes and Porous Materials Center, 4700 King Abdullah University of Science and Technology (KAUST), Thuwal 23955‐6900 (Kingdom of Saudi Arabia)
| | - Nicolas Moreno
- Biological and Environmental Science and Engineering Division (KAUST), Thuwal 23955‐6900 (Kingdom of Saudi Arabia)
- Center for Numerical Porous Media (KAUST), Thuwal 23955‐6900 (Kingdom of Saudi Arabia)
| | - Zengwei Ma
- School of Optoelectronic Information, Chongqing University of Technology, Chongqing 40054 (China)
| | - Victor Manuel Calo
- Center for Numerical Porous Media (KAUST), Thuwal 23955‐6900 (Kingdom of Saudi Arabia)
- Earth Science and Engineering & Applied Mathematics and Computational Science (KAUST), Thuwal 23955‐6900 (Kingdom of Saudi Arabia)
| | - Suzana P. Nunes
- Biological and Environmental Science and Engineering Division (KAUST), Thuwal 23955‐6900 (Kingdom of Saudi Arabia)
| | - Klaus‐Viktor Peinemann
- Advanced Membranes and Porous Materials Center, 4700 King Abdullah University of Science and Technology (KAUST), Thuwal 23955‐6900 (Kingdom of Saudi Arabia)
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24
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Renna LA, Boyle CJ, Gehan TS, Venkataraman D. Polymer Nanoparticle Assemblies: A Versatile Route to Functional Mesostructures. Macromolecules 2015. [DOI: 10.1021/acs.macromol.5b00375] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Lawrence A. Renna
- Department of Chemistry, University of Massachusetts Amherst, Amherst, Massachusetts 01003-9303, United States
| | - Connor J. Boyle
- Department of Chemistry, University of Massachusetts Amherst, Amherst, Massachusetts 01003-9303, United States
| | - Timothy S. Gehan
- Department of Chemistry, University of Massachusetts Amherst, Amherst, Massachusetts 01003-9303, United States
| | - D. Venkataraman
- Department of Chemistry, University of Massachusetts Amherst, Amherst, Massachusetts 01003-9303, United States
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25
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Dag A, Lu H, Stenzel M. Controlling the morphology of glyco-nanoparticles in water using block copolymer mixtures: the effect on cellular uptake. Polym Chem 2015. [DOI: 10.1039/c5py01360g] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Poly[(2-(α-d-mannosyloxy)ethyl acrylate)-block-(n-butyl acrylate)], P(ManA-b-BA), and poly[poly(ethylene glycol) methyl ether acrylate]-block-(n-butyl acrylate)], P(OEGMEA-b-BA) diblock copolymers were mixed at various ratios to generate self-assembled structures of different morphologies.
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Affiliation(s)
- Aydan Dag
- Centre for Advanced Macromolecular Design (CAMD)
- The University of New South Wales
- Sydney
- Australia
- Faculty of Pharmacy
| | - Hongxu Lu
- Centre for Advanced Macromolecular Design (CAMD)
- The University of New South Wales
- Sydney
- Australia
| | - Martina Stenzel
- Centre for Advanced Macromolecular Design (CAMD)
- The University of New South Wales
- Sydney
- Australia
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