1
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Ma L, Duan R, Cao G, Bahetihan H, Kong W. Core-shell particle formation via Co-assembly of AB diblock copolymers and nanoparticles in 3D soft confinement. RSC Adv 2024; 14:22449-22458. [PMID: 39010905 PMCID: PMC11248566 DOI: 10.1039/d4ra02223h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2024] [Accepted: 07/07/2024] [Indexed: 07/17/2024] Open
Abstract
Core-shell particle formation via co-assembly of AB diblock copolymers and nanoparticles in 3D soft confinement was studied using a simulated annealing method. Several sequences of soft confinement-induced core-shell particles were predicted as functions of the volume fraction of the nanoparticle to core-shell particles, the incompatibility between blocks, the volume fractions of A-blocks, the chain length of AB diblocks, the eccentricity of the nanoparticle, and the initial concentration of copolymers. Simulation results demonstrate that those factors are able to tune the morphology of the core-shell particles precisely. Calculated data indicate that the copolymer chain was located between a hard confinement wall composed of the nanoparticle and a soft confinement wall composed of solvents, and the arrangement direction of the copolymer chains was in a competitive equilibrium between the two. We anticipate that this work will be helpful and instructive for the preparation of polymer shells with different structures and shapes, as well as the study of self-assembly morphology of copolymers in a complex confinement systems.
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Affiliation(s)
- Liangjun Ma
- Department of Physics, University of Xinjiang Urumqi CN China
| | - Runyu Duan
- Department of Physics, University of Xinjiang Urumqi CN China
| | - Ganghui Cao
- Department of Physics, University of Xinjiang Urumqi CN China
| | | | - Weixin Kong
- Department of Physics, University of Xinjiang Urumqi CN China
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2
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Ma L, Bahetihan H, Kong W. Shell with Striped, Helical, and Bipolar Lamellae Structures from Soft Confinement-Induced Self-Assembly of AB Diblock Copolymers on a Nanocylinder. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:13699-13708. [PMID: 38952281 DOI: 10.1021/acs.langmuir.4c01493] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/03/2024]
Abstract
The soft confinement-induced self-assembly of AB diblock copolymers on a nanocylinder is studied via a simulated annealing method. The formation of multiple copolymer shells was predicted by varying the interfacial interaction, the size of confinement, and the height and diameter of the nanocylinder. The competition between solvent repulsion and nanocylinder attraction determined the degree of encapsulation of the copolymer shell. The formation of a helical copolymer shell was induced by the maximization of conformational entropy. The preferential distribution position of copolymers on anisotropic nanocylinder surfaces was induced by interfacial energy minimization. Our study contributes to the understanding of the formation mechanism of the helical structure in block copolymer aggregates and the fabrication of copolymer shells with predesigned morphologies.
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Affiliation(s)
- Liangjun Ma
- Department of Physics, University of Xinjiang, Urumqi 830046, China
| | | | - Weixin Kong
- Department of Physics, University of Xinjiang, Urumqi 830046, China
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3
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Kim J, Park J, Jung K, Kim EJ, Tan Z, Xu M, Lee YJ, Ku KH, Kim BJ. Light-Responsive Shape- and Color-Changing Block Copolymer Particles with Fast Switching Speed. ACS NANO 2024; 18:8180-8189. [PMID: 38450652 DOI: 10.1021/acsnano.3c12059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/08/2024]
Abstract
Polymer particles capable of dynamic shape changes in response to light have received substantial attention in the development of intelligent multifunctional materials. In this study, we develop a light-responsive block copolymer (BCP) particle system that exhibits fast and reversible shape and color transitions. The key molecular design is the integration of spiropyran photoacid (SPPA) molecules into the BCP particle system, which enables fast and dynamic transformations of polystyrene-b-poly(4-vinylpyridine) (PS-b-P4VP) particles in response to light. The SPPA photoisomerization, induced by 420 nm light irradiation, lowers the pH of the aqueous surroundings from 5.5 to 3.3. The protonated P4VP block substantially increases in domain size from 14 to 39 nm, resulting in significant elongation of the BCP particles (i.e., an increase in the aspect ratio (AR) of the particles from 1.8 to 3.4). Moreover, SPPA adsorbed onto the P4VP surface induces significant changes in the luminescent properties of the BCP particles via photoisomerization of SPPA. Notably, the BCP particles undergo fast, dynamic shape and color transitions within a period of 10 min, maintaining high reversibility over multiple light exposures. Functional dyes are selectively incorporated into different domains of the light-responsive BCP particles to achieve different ranges of color responses. Thus, this study showcases a light-responsive hydrogel display capable of reversible and multicolor photopatterning.
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Affiliation(s)
- Jinwoo Kim
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Jinseok Park
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Kyunghyun Jung
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Eun Ji Kim
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Zhengping Tan
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Meng Xu
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Young Jun Lee
- Carbon Composite Materials Research Center, Korea Institute of Science and Technology (KIST), Jeollabuk-do 55324, Republic of Korea
| | - Kang Hee Ku
- School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
| | - Bumjoon J Kim
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
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4
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Li X, Xu T. Stereoselective Polymerization of Aromatic Vinyl Polar Monomers. Eur J Inorg Chem 2023. [DOI: 10.1002/ejic.202200699] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Xin‐Lei Li
- State Key Laboratory of Fine Chemicals Department of Chemistry School of Chemical Engineering Dalian University of Technology Dalian 116024 P. R. China
| | - Tie‐Qi Xu
- State Key Laboratory of Fine Chemicals Department of Chemistry School of Chemical Engineering Dalian University of Technology Dalian 116024 P. R. China
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5
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Kim J, Lee YJ, Ku KH, Kim BJ. Effect of Molecular Structure of Photoswitchable Surfactant on Light-Responsive Shape Transition of Block Copolymer Particles. Macromolecules 2022. [DOI: 10.1021/acs.macromol.2c01465] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jinwoo Kim
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Young Jun Lee
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Kang Hee Ku
- School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
| | - Bumjoon J. Kim
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
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6
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Navarro L, Thünemann AF, Yokosawa T, Spiecker E, Klinger D. Regioselective Seeded Polymerization in Block Copolymer Nanoparticles: Post‐Assembly Control of Colloidal Features. Angew Chem Int Ed Engl 2022; 61:e202208084. [PMID: 35790063 PMCID: PMC9544770 DOI: 10.1002/anie.202208084] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Indexed: 11/24/2022]
Abstract
Post‐assembly modifications are efficient tools to adjust colloidal features of block copolymer (BCP) particles. However, existing methods often address particle shape, morphology, and chemical functionality individually. For simultaneous control, we transferred the concept of seeded polymerization to phase separated BCP particles. Key to our approach is the regioselective polymerization of (functional) monomers inside specific BCP domains. This was demonstrated in striped PS‐b‐P2VP ellipsoids. Here, polymerization of styrene preferably occurs in PS domains and increases PS lamellar thickness up to 5‐fold. The resulting asymmetric lamellar morphology also changes the particle shape, i.e., increases the aspect ratio. Using 4‐vinylbenzyl azide as co‐monomer, azides as chemical functionalities can be added selectively to the PS domains. Overall, our simple and versatile method gives access to various multifunctional BCP colloids from a single batch of pre‐formed particles.
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Affiliation(s)
- Lucila Navarro
- Institute of Pharmacy Freie Universität Berlin Königin-Luise Straße 2–4 14195 Berlin Germany
| | - Andreas F. Thünemann
- Bundesanstalt für Materialforschung und -prüfung (BAM) Unter den Eichen 87 12205 Berlin Germany
| | - Tadahiro Yokosawa
- Institute of Micro- and Nanostructure Research (IMN) & Center for Nanoanalysis and Electron Microscopy (CENEM) Friedrich-Alexander-Universität Erlangen-Nürnberg, IZNF Cauerstraße 3 91058 Erlangen Germany
| | - Erdmann Spiecker
- Institute of Micro- and Nanostructure Research (IMN) & Center for Nanoanalysis and Electron Microscopy (CENEM) Friedrich-Alexander-Universität Erlangen-Nürnberg, IZNF Cauerstraße 3 91058 Erlangen Germany
| | - Daniel Klinger
- Institute of Pharmacy Freie Universität Berlin Königin-Luise Straße 2–4 14195 Berlin Germany
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7
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Navarro L, Thünemann AF, Yokosawa T, Spiecker E, Klinger D. Regioselective Seeded Polymerization in Block Copolymer Nanoparticles: Post‐Assembly Control of Colloidal Features. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202208084] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Lucila Navarro
- Freie Universitat Berlin Biology, Chemistry, Pharmacy GERMANY
| | - Andreas F. Thünemann
- Bundesanstalt fur Materialforschung und -prufung Division 6.5 Synthesis and Scattering of Nanostructure GERMANY
| | - Tadahiro Yokosawa
- Friedrich-Alexander-Universitat Erlangen-Nurnberg Institute of Micro- and Nanostructure Research (IMN) & Center for Nanoanalysis and Electron Microscopy (CENEM) GERMANY
| | - Erdmann Spiecker
- Friedrich-Alexander-Universitat Erlangen-Nurnberg Institute of Micro- and Nanostructure Research (IMN) & Center for Nanoanalysis and Electron Microscopy (CENEM) GERMANY
| | - Daniel Klinger
- Freie Universitat Berlin Biology, Chemistry, Pharmacy Königin-Luise-Str. 2-4 14195 Berlin GERMANY
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8
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Guo Q, Li Y, Liu Q, Li Y, Song D. Janus Photonic Microspheres with Bridged Lamellar Structures via Droplet‐Confined Block Copolymer Co‐Assembly. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202113759] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Qilin Guo
- Key Laboratory of Composite and Functional Materials School of Materials Science and Engineering Tianjin University Tianjin 300350 China
| | - Yulian Li
- Key Laboratory of Composite and Functional Materials School of Materials Science and Engineering Tianjin University Tianjin 300350 China
| | - Qiujun Liu
- Key Laboratory of Composite and Functional Materials School of Materials Science and Engineering Tianjin University Tianjin 300350 China
| | - Yuesheng Li
- Key Laboratory of Composite and Functional Materials School of Materials Science and Engineering Tianjin University Tianjin 300350 China
| | - Dong‐Po Song
- Key Laboratory of Composite and Functional Materials School of Materials Science and Engineering Tianjin University Tianjin 300350 China
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9
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Lee D, Kim J, Ku KH, Li S, Shin JJ, Kim B. Poly(vinylpyridine)-Containing Block Copolymers for Smart, Multicompartment Particles. Polym Chem 2022. [DOI: 10.1039/d2py00150k] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Multicompartment particles generated by the self-assembly of block copolymers (BCPs) have received considerable attention due to their unique morphologies and functionalities. A class of important building blocks for multicomponent particles...
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10
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Guo Q, Li Y, Liu Q, Li Y, Song DP. Janus Photonic Microspheres with Bridged Lamellar Structures via Droplet-Confined Block Copolymer Co-Assembly. Angew Chem Int Ed Engl 2021; 61:e202113759. [PMID: 34859551 DOI: 10.1002/anie.202113759] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Indexed: 11/07/2022]
Abstract
Artificial self-assembly systems typically exhibit limited capability in creating nature-inspired complex materials with advanced functionalities. Here, an effective co-assembly strategy is demonstrated for the facile creation of complex photonic structures with intriguing light reflections. Two different lipophilic and amphiphilic bottlebrush block copolymers (BCPs) are placed within shrinking droplets to enable a cooperative working mechanism of microphase segregation and organized spontaneous emulsification, respectively. Layer assemblies of the lipophilic BCP and uniform water nanodroplets stabilized by the bottlebrush surfactant are both generated, and co-assembled into a bridged lamellar structure with the alternating arrangement of layers and closely packed nanodroplet arrays. Janus microspheres with diverse dual optical characteristics are successfully fabricated, and reflected wavelengths of light are highly tunable simply by changing the formulation or molecular weight of BCP.
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Affiliation(s)
- Qilin Guo
- Key Laboratory of Composite and Functional Materials, School of Materials Science and Engineering, Tianjin University, Tianjin, 300350, China
| | - Yulian Li
- Key Laboratory of Composite and Functional Materials, School of Materials Science and Engineering, Tianjin University, Tianjin, 300350, China
| | - Qiujun Liu
- Key Laboratory of Composite and Functional Materials, School of Materials Science and Engineering, Tianjin University, Tianjin, 300350, China
| | - Yuesheng Li
- Key Laboratory of Composite and Functional Materials, School of Materials Science and Engineering, Tianjin University, Tianjin, 300350, China
| | - Dong-Po Song
- Key Laboratory of Composite and Functional Materials, School of Materials Science and Engineering, Tianjin University, Tianjin, 300350, China
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11
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Kim J, Yun H, Lee YJ, Lee J, Kim SH, Ku KH, Kim BJ. Photoswitchable Surfactant-Driven Reversible Shape- and Color-Changing Block Copolymer Particles. J Am Chem Soc 2021; 143:13333-13341. [PMID: 34379395 DOI: 10.1021/jacs.1c06377] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Polymer particles that switch their shape and color in response to light are of great interest for the development of programmable smart materials. Herein, we report block copolymer (BCP) particles with reversible shapes and colors activated by irradiation with ultraviolet (UV) and visible lights. This shape transformation of the BCP particles is achieved by a spiropyran-dodecyltrimethylammoium bromide (SP-DTAB) surfactant that changes its amphiphilicity upon photoisomerization. Under UV light (365 nm) irradiation, the hydrophilic ring-opened merocyanine form of the SP-DTAB surfactant affords the formation of spherical, onion-like BCP particles. In contrast, when exposed to visible light, surfactants with the ring-closed form yield prolate or oblate BCP ellipsoids with axially stacked nanostructures. Importantly, the change in BCP particle morphology between spheres and ellipsoids is reversible over multiple UV and visible light irradiation cycles. In addition, the shape- and color-switchable BCP particles are integrated to form a composite hydrogel, demonstrating their potential as high-resolution displays with reversible patterning capabilities.
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Affiliation(s)
- Jinwoo Kim
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Hongseok Yun
- Department of Chemistry, Hanyang University, Seoul 04763, Republic of Korea
| | - Young Jun Lee
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Junhyuk Lee
- Packaging Center, Korea Institute of Industrial Technology (KITECH), Bucheon, Gyeonggi 14449, Republic of Korea
| | - Shin-Hyun Kim
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Kang Hee Ku
- Department of Chemical Engineering and Applied Chemistry, Chungnam National University, Daejeon 34134, Republic of Korea
| | - Bumjoon J Kim
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
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12
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Song R, Cho S, Shin S, Kim H, Lee J. From shaping to functionalization of micro-droplets and particles. NANOSCALE ADVANCES 2021; 3:3395-3416. [PMID: 36133725 PMCID: PMC9419121 DOI: 10.1039/d1na00276g] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Accepted: 05/10/2021] [Indexed: 06/15/2023]
Abstract
The structure of microdroplet and microparticle is a critical factor in their functionality, which determines the distribution and sequence of physicochemical reactions. Therefore, the technology of precisely tailoring their shape is requisite for implementing the user demand functions in various applications. This review highlights various methodologies for droplet shaping, classified into passive and active approaches based on whether additional body forces are applied to droplets to manipulate their functions and fabricate them into microparticles. The passive approaches cover batch emulsification, solvent evaporation and diffusion, micromolding, and microfluidic methods. In active approaches, the external forces, such as electrical and magnetic fields or optical lithography, are applied to microdroplets. Special attention is also given to latest technologies using microdroplets and microparticles, especially in the fields of biological, optical, robotic, and environmental applications. Finally, this review aims to address the advantages and disadvantages of the introduced approaches and suggests the direction for further development in this field.
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Affiliation(s)
- Ryungeun Song
- School of Mechanical Engineering, Sungkyunkwan University Suwon 16419 Korea
| | - Seongsu Cho
- School of Mechanical Engineering, Sungkyunkwan University Suwon 16419 Korea
| | - Seonghun Shin
- School of Mechanical Engineering, Sungkyunkwan University Suwon 16419 Korea
| | - Hyejeong Kim
- School of Mechanical Engineering, Korea University Seoul 02841 Korea
| | - Jinkee Lee
- School of Mechanical Engineering, Sungkyunkwan University Suwon 16419 Korea
- Institute of Quantum Biophysics, Sungkyunkwan University Suwon 16419 Korea
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13
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Kim Y, Kumagai A, Hu X, Shi AC, Li B, Jinnai H, Char K. Self-Assembled Morphologies of Lamella-Forming Block Copolymers Confined in Conical Nanopores. Macromolecules 2019. [DOI: 10.1021/acs.macromol.9b00822] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Youngkeol Kim
- The National Creative Research Initiative Center for Intelligent Hybrids, The WCU Program of Chemical Convergence for Energy & Environment, School of Chemical and Biological Engineering, Seoul National University, Seoul 08826, Republic of Korea
| | - Akemi Kumagai
- Institute of Multidisciplinary Research for Advanced Materials (IMRAM), Tohoku University, Sendai 980-8577, Japan
| | - Xiejun Hu
- School of Physics, Key Laboratory of Functional Polymer Materials of Ministry of Education, Nankai University, Tianjin 300071, China
| | - An-Chang Shi
- Department of Physics and Astronomy, McMaster University, Hamilton, Ontario L8S 4M1, Canada
| | - Baohui Li
- School of Physics, Key Laboratory of Functional Polymer Materials of Ministry of Education, Nankai University, Tianjin 300071, China
| | - Hiroshi Jinnai
- Institute of Multidisciplinary Research for Advanced Materials (IMRAM), Tohoku University, Sendai 980-8577, Japan
| | - Kookheon Char
- The National Creative Research Initiative Center for Intelligent Hybrids, The WCU Program of Chemical Convergence for Energy & Environment, School of Chemical and Biological Engineering, Seoul National University, Seoul 08826, Republic of Korea
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14
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Affiliation(s)
- Xiaolian Qiang
- Physical Chemistry and Center for Nanointegration (CENIDE)University of Duisburg-Essen 47057 Duisburg Germany
| | - Ramzi Chakroun
- Physical Chemistry and Center for Nanointegration (CENIDE)University of Duisburg-Essen 47057 Duisburg Germany
| | - Nicole Janoszka
- Physical Chemistry and Center for Nanointegration (CENIDE)University of Duisburg-Essen 47057 Duisburg Germany
| | - André H. Gröschel
- Physical Chemistry and Center for Nanointegration (CENIDE)University of Duisburg-Essen 47057 Duisburg Germany
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15
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Zheng L, Wang Z, Yin Y, Jiang R, Li B. Formation Mechanisms of Porous Particles from Self-Assembly of Amphiphilic Diblock Copolymers inside an Oil-in-Water Emulsion Droplet upon Solvent Evaporation. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:5902-5910. [PMID: 30950621 DOI: 10.1021/acs.langmuir.9b00613] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The formation mechanisms of porous particles from self-assembly of amphiphilic diblock copolymers inside an oil-in-water emulsion droplet upon evaporation of the organic solvent are investigated based on Monte Carlo simulations for the first time. A morphological diagram of particles is constructed as a function of the surfactant concentration (φ) and the copolymer composition characterized by the volume fraction of the hydrophilic B block ( fB). Particles with various morphologies are predicted. Morphological sequences from non-porosity to closed-porosity to capsules and finally to open-porosity particles are usually observed with increasing φ when fB ≤ 1/2, with the only exception that capsules do not occur when fB = 1/6. Furthermore, the critical φ value for a given morphological transition usually decreases with increasing fB. Micelles are always observed at higher φ regions when fB > 1/2. It is found that the specific surface area falls on almost the same regime for particles with the same kind of morphology, indicating that the morphology of a particle largely determines its specific surface area. The chain stretching varies with the particle morphology. It is the presence of the surfactant that makes the formation of porous particles possible, while when φ > 0, multiple morphological transitions can be induced by changing fB. In the process of organic solvent removal, the value of fB may affect the shape of pores inside the droplet and hence leads to the fB dependence of the morphological sequences. When the solvent evaporation is not too fast, the resulting morphological sequence does not depend on the evaporation rate. Our results are compared with related experiments.
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Affiliation(s)
- Lingfei Zheng
- School of Physics, Key Laboratory of Functional Polymer Materials of Ministry of Education , Nankai University , Tianjin 300071 , China
| | - Zheng Wang
- School of Physics, Key Laboratory of Functional Polymer Materials of Ministry of Education , Nankai University , Tianjin 300071 , China
| | - Yuhua Yin
- School of Physics, Key Laboratory of Functional Polymer Materials of Ministry of Education , Nankai University , Tianjin 300071 , China
| | - Run Jiang
- School of Physics, Key Laboratory of Functional Polymer Materials of Ministry of Education , Nankai University , Tianjin 300071 , China
| | - Baohui Li
- School of Physics, Key Laboratory of Functional Polymer Materials of Ministry of Education , Nankai University , Tianjin 300071 , China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) , Tianjin 300071 , China
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16
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Lee EC, Kim HJ, Park SY. Reversible Shape-Morphing and Fluorescence-Switching in Supramolecular Nanomaterials Consisting of Amphiphilic Cyanostilbene and Cucurbit[7]uril. Chem Asian J 2019; 14:1457-1461. [PMID: 30883032 DOI: 10.1002/asia.201900204] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2019] [Indexed: 02/06/2023]
Abstract
We demonstrate a reversible shape-morphing with concurrent fluorescence switching in the nanomaterials which are complexed with cucurbit[7]uril (CB[7]) in water. The cyanostilbene derivative alone forms ribbon-like two-dimensional (2D) nanocrystals with bright yellow excimeric emission in water (λem =540 nm, ΦF =42 %). Upon CB[7] addition, however, the ribbon-like 2D nanocrystals immediately transform to spherical nanoparticles with significant fluorescence quenching and blue-shifting (λem =490 nm, ΦF =1 %) through the supramolecular complexation of the cyanostilbene and CB[7]. Based on this reversible fluorescence switching and shape morphing, we could demonstrate a novel strategy of turn-on fluorescence sensing of spermine and also monitoring of lysine decarboxylase activity.
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Affiliation(s)
- Eung-Chang Lee
- Laboratory for Supramolecular Optoelectronic Materials, Department of Materials Science and Engineering, Seoul National University, ENG 445, Seoul, 08826, Korea
| | - Hyeong-Ju Kim
- Laboratory for Supramolecular Optoelectronic Materials, Department of Materials Science and Engineering, Seoul National University, ENG 445, Seoul, 08826, Korea
| | - Soo Young Park
- Laboratory for Supramolecular Optoelectronic Materials, Department of Materials Science and Engineering, Seoul National University, ENG 445, Seoul, 08826, Korea
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17
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Ji Y, Mertens AM, Gertler C, Fekiri S, Keser M, Sauer DF, Smith KEC, Schwaneberg U. Directed OmniChange Evolution Converts P450 BM3 into an Alkyltrimethylammonium Hydroxylase. Chemistry 2018; 24:16865-16872. [DOI: 10.1002/chem.201803806] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2018] [Indexed: 12/15/2022]
Affiliation(s)
- Yu Ji
- Institute of Biotechnology RWTH Aachen University Worringerweg 3 52074 Aachen Germany
| | - Alan Maurice Mertens
- Institute of Biotechnology RWTH Aachen University Worringerweg 3 52074 Aachen Germany
| | - Christoph Gertler
- Institute of Biotechnology RWTH Aachen University Worringerweg 3 52074 Aachen Germany
| | - Sallama Fekiri
- Institute of Biotechnology RWTH Aachen University Worringerweg 3 52074 Aachen Germany
| | - Merve Keser
- Institute of Biotechnology RWTH Aachen University Worringerweg 3 52074 Aachen Germany
| | - Daniel F. Sauer
- Institute of Biotechnology RWTH Aachen University Worringerweg 3 52074 Aachen Germany
| | - Kilian E. C. Smith
- Institute for Environmental Research RWTH Aachen University Worringerweg 1 52074 Aachen Germany
| | - Ulrich Schwaneberg
- Institute of Biotechnology RWTH Aachen University Worringerweg 3 52074 Aachen Germany
- DWI-Leibniz Institute for Interactive Materials Forckenbeckstraße 50 52074 Aachen Germany
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18
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Kitayama Y, Takeuchi T. Fabrication of Redox-Responsive Degradable Capsule Particles by a Shell-Selective Photoinduced Cross-Linking Approach from Spherical Polymer Particles. Chemistry 2017; 23:12870-12875. [PMID: 28656621 DOI: 10.1002/chem.201702367] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2017] [Indexed: 12/18/2022]
Abstract
In this study, a fabrication route towards functional capsule particles was successfully developed by means of a self-templating shell-selective cross-linking strategy that enables us to prepare shell-cross-linked hollow polymer particles directly from homogeneous spherical polymer particles. To prepare redox-responsive degradable capsule particles, a newly designed monomer bearing a photoinduced post-cross-linking group (cinnamoyl group) and a redox-environment-responsive cleavable group (disulfide group), N-cinnamoyl-N'-methyacryloylcystamine (MCC), was synthesized. Redox-responsive degradable capsule particles were successfully prepared from homogeneous spherical poly(MCC)-based particles by a self-templating shell-selective photoinduced cross-linking approach. Moreover, the cargo loading capability of the shell-cross-linked hollow particles was confirmed through a solvent exchange procedure using dyes, polymer precursors and anticancer reagents. Furthermore, redox-responsive degradability of the capsule polymer particles was also confirmed by adding a reducing agent for cleavage of the disulfide linkage. We hope that the efficient fabrication route of functional capsule particles directly from spherical polymer particles opens efficient routes for the fabrication of a wide range of capsule particles; in particular, this technique is robust, productive, and facile because neither additional sacrificial template particles nor toxic solvents are required.
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Affiliation(s)
- Yukiya Kitayama
- Graduate School of Engineering, Kobe University, 1-1 Rokkodai-cho, Nada-ku, Kobe, 657-8501, Japan
| | - Toshifumi Takeuchi
- Graduate School of Engineering, Kobe University, 1-1 Rokkodai-cho, Nada-ku, Kobe, 657-8501, Japan
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19
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Shape‐Shifting Patchy Particles. Angew Chem Int Ed Engl 2017; 56:5507-5511. [DOI: 10.1002/anie.201701456] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2017] [Revised: 03/09/2017] [Indexed: 11/07/2022]
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20
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Affiliation(s)
- Xiaolong Zheng
- Molecular Design Institute Department of Chemistry New York University New York NY 10003 USA
| | - Mingzhu Liu
- Molecular Design Institute Department of Chemistry New York University New York NY 10003 USA
| | - Mingxin He
- Tandon School of Engineering Department of Chemical & Biomolecular Engineering New York University Brooklyn NY 11201 USA
| | - David J. Pine
- Department of Physics Center for Soft Matter Research New York University New York NY 10003 USA
- Tandon School of Engineering Department of Chemical & Biomolecular Engineering New York University Brooklyn NY 11201 USA
| | - Marcus Weck
- Molecular Design Institute Department of Chemistry New York University New York NY 10003 USA
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21
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Wang Z, Cao Y, Zhang X, Wang D, Liu M, Xie Z, Wang Y. Rapid Self-Assembly of Block Copolymers for Flower-Like Particles with High Throughput. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:13517-13524. [PMID: 27993024 DOI: 10.1021/acs.langmuir.6b03940] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The self-assembly of block copolymers has evolved into a foremost bottom-up approach for building polymeric materials. Historical challenges exist within this lively field, including the scalability and elegant simplicity of self-assembled aggregates with predictable structures. Here, we report a generally applicable strategy for the rapid self-assembly of poly(ethylene glycol)-block-poly(l-lactic acid) with the help of a single oil-in-water emulsion. A kind of flower-like polymer particle with filamentous surface branches is rapidly formed after removing the oil phase from the emulsion system. Moreover, the dimension of the branched filaments and the spherical internal core can be controlled through regulating the block ratio and the emulsification conditions. In particular, we propose an explosion theory as a balance between phase separation and interchain interaction for explaining the formation of the branched structures of the flower-like particles. The particles with high throughput are further functionalized with polypyrrole for their use in enhanced photoelectric-sensing applications.
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Affiliation(s)
- Zhen Wang
- Department of Chemistry, Renmin University of China , Beijing 100872, China
| | - Yuanyuan Cao
- Department of Chemistry, Renmin University of China , Beijing 100872, China
| | - Xinyue Zhang
- Department of Chemistry, Renmin University of China , Beijing 100872, China
| | - Dingguan Wang
- Department of Chemistry, Renmin University of China , Beijing 100872, China
| | - Ming Liu
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Science , Changchun 130022, China
| | - Zhigang Xie
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Science , Changchun 130022, China
| | - Yapei Wang
- Department of Chemistry, Renmin University of China , Beijing 100872, China
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22
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Zhang X, Ejima H, Yoshie N. Formation of Hierarchical Lamellae-in-Lamella Nanostructures from Polymer Blends Via Controlled Nonequilibrium Freezing. Macromol Rapid Commun 2015; 36:1664-8. [PMID: 26175135 DOI: 10.1002/marc.201500303] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2015] [Revised: 06/08/2015] [Indexed: 11/09/2022]
Abstract
The creation of hierarchical nanostructures in polymeric materials has been intensively studied due to the great potential to tailor their physicochemical properties. Although much success has been achieved over the past decades in block copolymers, hierarchical structure engineering in polymer blends remains a great challenge. Here, the formation of hierarchical lamellae-in-lamella nanostructures from polymer blends via controlled nonequilibrium freezing is reported. Polymer blends are first dissolved in molten hexamethylbenzene (HMB) to form a homogeneous melt. When cooled to below its melting temperature, the HMB is crystallized and depleted, and the polymers are directionally solidified. This process is rapid enough that phase separation of the polymer blends is kinetically trapped at the nanoscale level. Then, the polymer blend epitaxially crystallizes onto the HMB inside the nanophase, resulting in the hierarchical lamellae-in-lamella structure. This structure is stable under ambient conditions and tunable depending on the annealing temperature and blending ratio.
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Affiliation(s)
- Xin Zhang
- Institute of Industrial Science, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo, 153-8505, Japan
| | - Hirotaka Ejima
- Institute of Industrial Science, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo, 153-8505, Japan
| | - Naoko Yoshie
- Institute of Industrial Science, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo, 153-8505, Japan
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Fan H, Jin Z. Hierarchical porous polycaprolactone microspheres generated via a simple pathway combining nanoprecipitation and hydrolysis. Chem Commun (Camb) 2015; 51:15114-7. [DOI: 10.1039/c5cc04586j] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We demonstrated a one-pot, soap-free fabrication of porous polycaprolactone microspheres by combining nanoprecipitation and hydrolysis. The obtained porous polycaprolactone microspheres show great advantages for application in drug delivery.
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Affiliation(s)
- Hailong Fan
- Department of Chemistry
- Renmin University of China
- Beijing 100872
- P. R. China
| | - Zhaoxia Jin
- Department of Chemistry
- Renmin University of China
- Beijing 100872
- P. R. China
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24
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Jin Z, Fan H. Self-assembly of nanostructured block copolymer nanoparticles. SOFT MATTER 2014; 10:9212-9219. [PMID: 25341526 DOI: 10.1039/c4sm02064b] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
In this highlight, we discuss the self-assembly of block copolymer (BCP) nanoparticles. We first review the state-of-art of hierarchical structural features of BCP nanoparticles due to 3D geometric confinement, both theory and experiments. Simultaneously, we highlight the applications based on these structural features: the generation of multifunctional hybrid nanoparticles, the fabrication of mesoporous BCP nanoparticles, and applications of using BCP nanoparticles as nanocontainers or nanocargos. Finally, we discuss the challenge in the fabrication and potential applications of nanostructured BCP nanoparticles.
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Affiliation(s)
- Zhaoxia Jin
- Department of Chemistry, Renmin University of China, Beijing 100872, P. R. China.
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