1
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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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2
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Pu Y, Fan J. Thermoresponsive Skin-like Fabric for Personal Comfort and Protection. ACS APPLIED MATERIALS & INTERFACES 2024; 16:10960-10968. [PMID: 38361387 DOI: 10.1021/acsami.3c17270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/17/2024]
Abstract
Acting as a "second skin", clothing plays an indispensable role in providing comfort and protection in the wide range of environments in which we live. However, comfort and protection are often competing requirements and are difficult to improve simultaneously. By mimicking the exceptional thermoresponsive one-way liquid transport property of human skin, here we developed a scalable and ecofriendly skin-like fabric that has a tunable directional water transport rate while having excellent water repellency. The water transport rate is also temperature-responsive, just like skin. As the temperature increases, the wettability gradient in the spatially distributed channels (acting like "sweat glands") increases, promoting sweat transport and evaporative heat dissipation. As the temperature decreases, on the other hand, the wettability gradient diminishes, reducing liquid transport and evaporative heat loss, thereby promoting heat retention. The fabric is highly suitable for sportswear and functional clothing and can have wider applications, such as oil-water separation, fog harvesting, etc.
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Affiliation(s)
- Yi Pu
- School of Fashion and Textiles, The Hong Kong Polytechnic University, 11 Yuk Choi Road, Kowloon 999077, Hong Kong
| | - Jintu Fan
- School of Fashion and Textiles, The Hong Kong Polytechnic University, 11 Yuk Choi Road, Kowloon 999077, Hong Kong
- Research Institute of Sports Science and Technology, The Hong Kong Polytechnic University, 11 Yuk Choi Road, Kowloon 999077, Hong Kong
- Research Centre of Textiles for Future Fashion, The Hong Kong Polytechnic University, 11 Yuk Choi Road, Kowloon 999077, Hong Kong
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3
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Brasili F, Del Monte G, Capocefalo A, Chauveau E, Buratti E, Casciardi S, Truzzolillo D, Sennato S, Zaccarelli E. Toward a Unified Description of the Electrostatic Assembly of Microgels and Nanoparticles. ACS APPLIED MATERIALS & INTERFACES 2023; 15:58770-58783. [PMID: 38060242 DOI: 10.1021/acsami.3c14608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/08/2023]
Abstract
The interplay of soft responsive particles, such as microgels, with nanoparticles (NPs) yields highly versatile complexes that show great potential for applications, ranging from plasmonic sensing to catalysis and drug delivery. However, the microgel-NP assembly process has not been investigated so far at the microscopic level, thus hindering the possibility of designing such hybrid systems a priori. In this work, we combine state-of-the-art numerical simulations with experiments to elucidate the fundamental mechanisms taking place when microgel-NP assembly is controlled by electrostatic interactions and the associated effects on the structure of the resulting complexes. We find a general behavior where, by increasing the number of interacting NPs, the microgel deswells up to a minimum size after which a plateau behavior occurs. This occurs either when NPs are mainly adsorbed to the microgel corona via the folding of the more external chains or when NPs penetrate inside the microgel, thereby inducing a collective reorganization of the polymer network. By varying microgel properties, such as fraction of cross-linkers or charge, as well as NP size and charge, we further show that the microgel deswelling curves can be rescaled onto a single master curve, for both experiments and simulations, demonstrating that the process is entirely controlled by the charge of the whole microgel-NP complex. Our results thus have a direct relevance in fundamental materials science and offer novel tools to tailor the nanofabrication of hybrid devices of technological interest.
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Affiliation(s)
- Francesco Brasili
- Institute for Complex Systems, National Research Council, Piazzale Aldo Moro 5, 00185 Rome, Italy
- Department of Physics, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy
| | - Giovanni Del Monte
- Institute for Complex Systems, National Research Council, Piazzale Aldo Moro 5, 00185 Rome, Italy
- Department of Physics, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy
| | - Angela Capocefalo
- Institute for Complex Systems, National Research Council, Piazzale Aldo Moro 5, 00185 Rome, Italy
- Department of Physical and Chemical Sciences, University of L'Aquila, Via Vetoio, Coppito, 67100 L'Aquila, Italy
| | - Edouard Chauveau
- UMR 5221, CNRS-Université de Montpellier, Laboratoire Charles Coulomb, 34095 Montpellier, France
| | - Elena Buratti
- Institute for Complex Systems, National Research Council, Piazzale Aldo Moro 5, 00185 Rome, Italy
- Department of Chemical, Pharmaceutical and Agricultural Sciences, University of Ferrara, Via Luigi Borsari 46, 44121 Ferrara, Italy
| | - Stefano Casciardi
- Department of Occupational and Environmental Medicine, Epidemiology and Hygiene, National Institute for Insurance Against Accidents at Work (INAIL), Via di Fontana Candida 1, Monte Porzio Catone, 00078 Rome, Italy
| | - Domenico Truzzolillo
- UMR 5221, CNRS-Université de Montpellier, Laboratoire Charles Coulomb, 34095 Montpellier, France
| | - Simona Sennato
- Institute for Complex Systems, National Research Council, Piazzale Aldo Moro 5, 00185 Rome, Italy
- Department of Physics, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy
| | - Emanuela Zaccarelli
- Institute for Complex Systems, National Research Council, Piazzale Aldo Moro 5, 00185 Rome, Italy
- Department of Physics, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy
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4
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Liu X, Yan N, Jin J, Du Y, Jiang W. Polyhedral Colloidal Clusters Assembled from Amphiphilic Nanoparticles in Deformable Droplets. NANO LETTERS 2023; 23:8022-8028. [PMID: 37651713 DOI: 10.1021/acs.nanolett.3c01995] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
Abstract
Polyhedral colloidal clusters assembled from functional inorganic nanoparticles have attracted great interest in both scientific research and applications. However, the spontaneous assembly of colloidal nanoparticles into polyhedral clusters with regular shape and tunable structures remains a grand challenges. Here, we successfully construct Mackay icosahedral and regular tetrahedral colloidal clusters assembled from gold nanoparticles grafted with a mixture of polystyrene (PS) and poly(2-vinylpyridine) (P2VP) homopolymers by precisely tuning the interfacial interaction between the nanoparticles and the oil/water interface. By increasing the proportion of hydrophilic P2VP ligands on the surface of gold nanoparticles, the Mackay icosahedral clusters can transform into regular tetrahedral clusters in order to maximize the surface area of the polyhedral assembly. Furthermore, we reveal the formation mechanism of these regular polyhedral colloidal clusters. The formation of polyhedral colloidal clusters is not only dependent on the entropy but also determined by the interfacial free energy. This finding demonstrates an effective approach to organize nanoparticles into polyhedral colloidal clusters with potential applications in various fields.
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Affiliation(s)
- Xuejie Liu
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
- University of Science and Technology of China, Hefei 230026, China
- College of Materials and Textile Engineering, Jiaxing University, Jiaxing 314001, China
| | - Nan Yan
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
- College of Chemistry, Changchun Normal University, Changchun 130032, China
| | - Jing Jin
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | - Yanqiu Du
- College of Materials and Textile Engineering, Jiaxing University, Jiaxing 314001, China
| | - Wei Jiang
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
- University of Science and Technology of China, Hefei 230026, China
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5
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Zhu Y, Huang C, Zhang L, Andelman D, Man X. The Process-Directed Self-Assembly of Block Copolymer Particles. Macromol Rapid Commun 2023; 44:e2300176. [PMID: 37071857 DOI: 10.1002/marc.202300176] [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: 03/28/2023] [Revised: 04/13/2023] [Indexed: 04/20/2023]
Abstract
The kinetic paths of structural evolution and formation of block copolymer (BCP) particles are explored using dynamic self-consistent field theory (DSCFT). It is shown that the process-directed self-assembly of BCP immersed in a poor solvent leads to the formation of striped ellipsoids, onion-like particles and double-spiral lamellar particles. The theory predicts a reversible path of shape transition between onion-like particles and striped ellipsoidal ones by regulating the temperature (related to the Flory-Huggins parameter between the two components of BCP, χAB ) and the selectivity of solvent toward one of the two BCP components. Furthermore, a kinetic path of shape transition from onion-like particles to double-spiral lamellar particles, and then back to onion-like particles is demonstrated. By investigating the inner-structural evolution of a BCP particle, it is identified that changing the intermediate bi-continuous structure into a layered one is crucial for the formation of striped ellipsoidal particles. Another interesting finding is that the formation of onion-like particles is characterized by a two-stage microphase separation. The first is induced by the solvent preference, and the second is controlled by the thermodynamics. The findings lead to an effective way of tailoring nanostructure of BCP particles for various industrial applications.
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Affiliation(s)
- Yanyan Zhu
- Center of Soft Matter Physics and its Applications, School of Physics, Beihang University, Beijing, 100191, China
| | - Changhang Huang
- Center of Soft Matter Physics and its Applications, School of Physics, Beihang University, Beijing, 100191, China
| | - Liangshun Zhang
- Shanghai Key Laboratory of Advanced Polymeric Materials, Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - David Andelman
- School of Physics and Astronomy, Tel Aviv University, Ramat Aviv 69978, Tel Aviv, Israel
| | - Xingkun Man
- Center of Soft Matter Physics and its Applications, School of Physics, Beihang University, Beijing, 100191, China
- Peng Huanwu Collaborative Center for Research and Education, Beihang University, Beijing, 100191, China
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6
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Chen C, van der Naald M, Singh A, Dolinski ND, Jackson GL, Jaeger HM, Rowan SJ, de Pablo JJ. Leveraging the Polymer Glass Transition to Access Thermally Switchable Shear Jamming Suspensions. ACS CENTRAL SCIENCE 2023; 9:639-647. [PMID: 37122459 PMCID: PMC10141574 DOI: 10.1021/acscentsci.2c01338] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Indexed: 05/03/2023]
Abstract
Suspensions of polymeric nano- and microparticles are fascinating stress-responsive material systems that, depending on their composition, can display a diverse range of flow properties under shear, such as drastic thinning, thickening, and even jamming (reversible solidification driven by shear). However, investigations to date have almost exclusively focused on nonresponsive particles, which do not allow in situ tuning of the flow properties. Polymeric materials possess rich phase transitions that can be directly tuned by their chemical structures, which has enabled researchers to engineer versatile adaptive materials that can respond to targeted external stimuli. Reported herein are suspensions of (readily prepared) micrometer-sized polymeric particles with accessible glass transition temperatures (T g) designed to thermally control their non-Newtonian rheology. The underlying mechanical stiffness and interparticle friction between particles change dramatically near T g. Capitalizing on these properties, it is shown that, in contrast to conventional systems, a dramatic and nonmonotonic change in shear thickening occurs as the suspensions transition through the particles' T g. This straightforward strategy enables the in situ turning on (or off) of the system's ability to shear jam by varying the temperature relative to T g and lays the groundwork for other types of stimuli-responsive jamming systems through polymer chemistry.
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Affiliation(s)
- Chuqiao Chen
- Pritzker
School of Molecular Engineering, University
of Chicago, Chicago, Illinois 60637, USA
| | | | - Abhinendra Singh
- Pritzker
School of Molecular Engineering, University
of Chicago, Chicago, Illinois 60637, USA
- James
Franck Institute, The University of Chicago, Chicago, Illinois 60637, USA
- Department
of Macromolecular Science and Engineering, Case Western Reserve University, Cleveland, Ohio 44106, USA
| | - Neil D. Dolinski
- Pritzker
School of Molecular Engineering, University
of Chicago, Chicago, Illinois 60637, USA
| | - Grayson L. Jackson
- James
Franck Institute, The University of Chicago, Chicago, Illinois 60637, USA
| | - Heinrich M. Jaeger
- Department
of Physics, The University of Chicago, Chicago, Illinois 60637, USA
- James
Franck Institute, The University of Chicago, Chicago, Illinois 60637, USA
| | - Stuart J. Rowan
- Pritzker
School of Molecular Engineering, University
of Chicago, Chicago, Illinois 60637, USA
- Department
of Chemistry, The University of Chicago, Chicago, Illinois 60637, USA
- Center
for
Molecular Engineering, Argonne National
Laboratory, Lemont, Illinois 60439, USA
- E-mail:
| | - Juan J. de Pablo
- Pritzker
School of Molecular Engineering, University
of Chicago, Chicago, Illinois 60637, USA
- Center
for
Molecular Engineering, Argonne National
Laboratory, Lemont, Illinois 60439, USA
- E-mail:
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7
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Peng M, Hu D, Chang X, Zhu Y. Confined Self-Assembly of Block Copolymers within Emulsion Droplets: A Perspective. J Phys Chem B 2022; 126:9435-9442. [PMID: 36378152 DOI: 10.1021/acs.jpcb.2c06225] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
When the self-assembly of block copolymers (BCPs) occurs within organic emulsion droplets in the aqueous phase, the strong structural frustration of BCP chains causes the formation of a series of well-regulated BCP particles that cannot be obtained from the self-assembly of BCPs in the bulk state or solution. In this Perspective, we review the recent progress of the self-assembly of BCPs confined in emulsion droplets. The governing factors of the structure and morphology of the as-prepared BCP particles are summarized. In addition, the applications of the as-prepared BCP particles in photonic crystals and drug release are discussed. Finally, we also give a forward-looking perspective on future challenges in this field.
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Affiliation(s)
- Meiling Peng
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Key Laboratory of Organosilicon Material Technology, Hangzhou Normal University, Zhejiang Province, Hangzhou, 311121 Zhejiang, People's Republic of China
| | - Dengwen Hu
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Key Laboratory of Organosilicon Material Technology, Hangzhou Normal University, Zhejiang Province, Hangzhou, 311121 Zhejiang, People's Republic of China
| | - Xiaohua Chang
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Key Laboratory of Organosilicon Material Technology, Hangzhou Normal University, Zhejiang Province, Hangzhou, 311121 Zhejiang, People's Republic of China
| | - Yutian Zhu
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Key Laboratory of Organosilicon Material Technology, Hangzhou Normal University, Zhejiang Province, Hangzhou, 311121 Zhejiang, People's Republic of China
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8
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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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9
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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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10
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Ren Y, Xie W, Li Y, Cui Y, Zeng C, Yuan K, Wu L, Deng Y. Dynamic Coassembly of Amphiphilic Block Copolymer and Polyoxometalates in Dual Solvent Systems: An Efficient Approach to Heteroatom-Doped Semiconductor Metal Oxides with Controllable Nanostructures. ACS CENTRAL SCIENCE 2022; 8:1196-1208. [PMID: 36032768 PMCID: PMC9413427 DOI: 10.1021/acscentsci.2c00784] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Indexed: 05/15/2023]
Abstract
Dynamic coassembly of block copolymers (BCPs) with Keggin-type polyoxometalates (POMs) is developed to synthesize heteroatom-doped tungsten oxide with controllable nanostructures, including hollow hemispheres, nanoparticles, and nanowires. The versatile coassembly in dual n-hexane/THF solvent solution enables the fomation of poly(ethylene oxide)-b-polystyrene (PEO-b-PS)/POMs (e.g., silicotungstic acid, H4SiW12O40) nanocomposites with different morphologies such as spherical vesicles, inverse spherical micelles, and inverse cylindrical micelles, which can be readily converted into diverse nanostructured metal oxides with high surface area and unique properties via in situ thermal-induced structural evolution. For example, uniform silicon-doped WO3 (Si-WO3) hollow hemispheres derived from coassembly of PEO-b-PS with H4SiW12O40 were utilized to fabricate gas sensing devices which exhibit superior gas sensing performance toward acetone, thanks to the selective gas-solid interface catalytic reaction that induces resistance changes of the devices due to the high specific surface areas, abundant oxygen vacancies, and the Si-doping induced metastable ε-phase of WO3. Furthermore, density functional theory (DFT) calculation reveals the mechanism about the high sensitivity and selectivity of the gas sensors. On the basis of the as-fabricated devices, an integrated gas sensor module was constructed, which is capable of real-time monitoring the environmental acetone concentration and displaying relevant sensing results on a smart phone via Bluetooth communication.
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Affiliation(s)
- Yuan Ren
- Department
of Chemistry, Department of Gastroenterology, Zhongshan Hospital of
Fudan University, State Key Laboratory of Molecular Engineering of
Polymers, Shanghai Key Laboratory of Molecular Catalysis and Innovative
Materials, Fudan University, Shanghai 200433, P. R. China
| | - Wenhe Xie
- Department
of Chemistry, Department of Gastroenterology, Zhongshan Hospital of
Fudan University, State Key Laboratory of Molecular Engineering of
Polymers, Shanghai Key Laboratory of Molecular Catalysis and Innovative
Materials, Fudan University, Shanghai 200433, P. R. China
| | - Yanyan Li
- Department
of Chemistry, Department of Gastroenterology, Zhongshan Hospital of
Fudan University, State Key Laboratory of Molecular Engineering of
Polymers, Shanghai Key Laboratory of Molecular Catalysis and Innovative
Materials, Fudan University, Shanghai 200433, P. R. China
| | - Yuanyuan Cui
- Shimazu
China Co LTD, Shanghai 200233, P. R. China
| | - Chao Zeng
- School
of Microelectronics, Fudan University, Shanghai 200433, P. R. China
| | - Kaiping Yuan
- Frontier
Institute of Chip and System, State Key Laboratory of ASIC and System, Fudan University, Shanghai 200433, P. R. China
| | - Limin Wu
- Institute
of Energy and Materials Chemistry, Inner
Mongolia University, 235 West University Street, Hohhot 010021, P. R. China
| | - Yonghui Deng
- Department
of Chemistry, Department of Gastroenterology, Zhongshan Hospital of
Fudan University, State Key Laboratory of Molecular Engineering of
Polymers, Shanghai Key Laboratory of Molecular Catalysis and Innovative
Materials, Fudan University, Shanghai 200433, P. R. China
- Institute
of Energy and Materials Chemistry, Inner
Mongolia University, 235 West University Street, Hohhot 010021, P. R. China
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11
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Wang Y, Hu D, Chang X, Zhu Y. Temperature-Driven Reversible Shape Transformation of Polymeric Nanoparticles from Emulsion Confined Coassembly of Block Copolymers and Poly( N-isopropylacrylamide). Macromolecules 2022. [DOI: 10.1021/acs.macromol.2c00893] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yaping Wang
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Key Laboratory of Organosilicon Material Technology, Hangzhou Normal University, Hangzhou 311121, Zhejiang, People’s Republic of China
| | - Dengwen Hu
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Key Laboratory of Organosilicon Material Technology, Hangzhou Normal University, Hangzhou 311121, Zhejiang, People’s Republic of China
| | - Xiaohua Chang
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Key Laboratory of Organosilicon Material Technology, Hangzhou Normal University, Hangzhou 311121, Zhejiang, People’s Republic of China
| | - Yutian Zhu
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Key Laboratory of Organosilicon Material Technology, Hangzhou Normal University, Hangzhou 311121, Zhejiang, People’s Republic of China
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12
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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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13
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Hu D, Wang Y, Liu J, Mao Y, Chang X, Zhu Y. Light-driven sequential shape transformation of block copolymer particles through three-dimensional confined self-assembly. NANOSCALE 2022; 14:6291-6298. [PMID: 35416822 DOI: 10.1039/d2nr01172g] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Shape-controlled block copolymer (BCP) particles that respond to light stimulus have drawn great attention due to their promising applications in smart materials, yet polymeric particles with light-triggered controllable sequential shape transformation (SST) are still rarely reported. By confined co-assembly of polystyrene-b-poly(2-vinylpyridine) (PS-b-P2VP) and azo-containing light-responsive additives within emulsions, herein, we fabricated BCP particles with light-controlled SST behavior. Attributed to the quaternization of P2VP chains with bromoalkyl additives and the trans-cis isomerization of an azo group under UV light, the interfacial interactions between the BCPs and the surrounding aqueous phase are significantly varied; therefore, the particles exhibit three distinct phases in sequence: (1) elongation of ellipsoidal particles with increasing domain spacing; (2) shape transformation of elongated ellipsoidal particles into accordion-like particles; and (3) disassembly of polymer particles into small spheres. In addition, these particles with SST behavior can be used in light-controlled drug release at a high spatial-temporal resolution, demonstrating their potential in clinical settings and biomedicine.
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Affiliation(s)
- Dengwen Hu
- College of Materials, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou, 311121, Zhejiang, People's Republic of China.
| | - Yaping Wang
- College of Materials, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou, 311121, Zhejiang, People's Republic of China.
| | - Jintao Liu
- College of Materials, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou, 311121, Zhejiang, People's Republic of China.
| | - Yanya Mao
- College of Materials, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou, 311121, Zhejiang, People's Republic of China.
| | - Xiaohua Chang
- College of Materials, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou, 311121, Zhejiang, People's Republic of China.
| | - Yutian Zhu
- College of Materials, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou, 311121, Zhejiang, People's Republic of China.
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14
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Fan X, Walther A. 1D Colloidal chains: recent progress from formation to emergent properties and applications. Chem Soc Rev 2022; 51:4023-4074. [PMID: 35502721 DOI: 10.1039/d2cs00112h] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Integrating nanoscale building blocks of low dimensionality (0D; i.e., spheres) into higher dimensional structures endows them and their corresponding materials with emergent properties non-existent or only weakly existent in the individual building blocks. Constructing 1D chains, 2D arrays and 3D superlattices using nanoparticles and colloids therefore continues to be one of the grand goals in colloid and nanomaterial science. Amongst these higher order structures, 1D colloidal chains are of particular interest, as they possess unique anisotropic properties. In recent years, the most relevant advances in 1D colloidal chain research have been made in novel synthetic methodologies and applications. In this review, we first address a comprehensive description of the research progress concerning various synthetic strategies developed to construct 1D colloidal chains. Following this, we highlight the amplified and emergent properties of the resulting materials, originating from the assembly of the individual building blocks and their collective behavior, and discuss relevant applications in advanced materials. In the discussion of synthetic strategies, properties, and applications, particular attention will be paid to overarching concepts, fresh trends, and potential areas of future research. We believe that this comprehensive review will be a driver to guide the interdisciplinary field of 1D colloidal chains, where nanomaterial synthesis, self-assembly, physical property studies, and material applications meet, to a higher level, and open up new research opportunities at the interface of classical disciplines.
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Affiliation(s)
- Xinlong Fan
- Institute for Macromolecular Chemistry, Albert-Ludwigs-University Freiburg, Stefan-Meier-Str. 31, 79104, Freiburg, Germany.
| | - Andreas Walther
- A3BMS Lab, Department of Chemistry, University of Mainz, Duesbergweg 10-14, 55128 Mainz, Germany.
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15
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Zhang M, Ren M, Zhang Y, Hou Z, Liu S, Zhang L, Xu J, Zhu J. Shaping Block Copolymer Microparticles by Positively Charged Polymeric Nanoparticles. Macromol Rapid Commun 2022; 43:e2200143. [PMID: 35396780 DOI: 10.1002/marc.202200143] [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: 02/15/2022] [Revised: 03/27/2022] [Indexed: 11/08/2022]
Abstract
Shape-transforming block copolymer (BCP) microparticles have attracted extensive attention due to their promising applications in nanotechnology, biomedicines, interfacial science, and other fields. As their performance is highly associated to their shape and structure, it is highly important to realize the precise control of particle shape. In this report, we propose a method to regulate the shape and structure of polystyrene-b-polydimethoxysiloxane (PS-b-PDMS) microparticles by using positively charged core-crosslinked nanoparticles (CNPs) as a co-surfactant, combining with cationic surfactant cetyltrimethylammonium bromide (CTAB). The electrostatic repulsive interactions between CNPs and CTAB dominate the shape of PS-b-PDMS particles. Upon introducing NaCl, the electrostatic repulsion is reduced, resulting in the reshape of PS-b-PDMS particles from striped Janus ellipsoids to onion-like microspheres at a critical concentration of NaCl (cNaCl ). Interestingly, we find that the critical cNaCl first increased then reached a plateau, as the increase in the crosslinking degree of the CNPs. Our work provides a simple strategy to tailor the morphology of BCPs by manipulating the electrostatic interaction. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Mengmeng Zhang
- Key Lab of Materials Chemistry for Energy Conversion & Storage (HUST) of Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan, 430074, China
| | - Min Ren
- Key Lab of Materials Chemistry for Energy Conversion & Storage (HUST) of Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan, 430074, China
| | - Yuping Zhang
- Key Lab of Materials Chemistry for Energy Conversion & Storage (HUST) of Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan, 430074, China
| | - Zaiyan Hou
- Key Lab of Materials Chemistry for Energy Conversion & Storage (HUST) of Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan, 430074, China
| | - Simeng Liu
- Key Lab of Materials Chemistry for Energy Conversion & Storage (HUST) of Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan, 430074, China
| | - Lianbin Zhang
- Key Lab of Materials Chemistry for Energy Conversion & Storage (HUST) of Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan, 430074, China
| | - Jiangping Xu
- Key Lab of Materials Chemistry for Energy Conversion & Storage (HUST) of Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan, 430074, China
| | - Jintao Zhu
- Key Lab of Materials Chemistry for Energy Conversion & Storage (HUST) of Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan, 430074, China
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16
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Navarro L, Thünemann AF, Klinger D. Solvent Annealing of Striped Ellipsoidal Block Copolymer Particles: Reversible Control over Lamellae Asymmetry, Aspect Ratio, and Particle Surface. ACS Macro Lett 2022; 11:329-335. [PMID: 35575365 DOI: 10.1021/acsmacrolett.1c00665] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Solvent annealing is a versatile tool to adjust the shape and morphology of block copolymer (BCP) particles. During this process, polar solvents are often used for block-selective swelling. However, such water-miscible solvents can induce (partial) solubilization of one block in the surrounding aqueous medium, thus, causing complex structural variations and even particle disassembly. To reduce the complexity in morphology control, we focused on toluene as a nonpolar polystyrene-selective solvent for the annealing of striped polystyrene-b-poly(2-vinylpyridine) (PS-b-P2VP) ellipsoids. The selective stretching of PS chains produces unique asymmetric lamellae structures, which translate to an increase in the particle aspect ratio after toluene evaporation. Complete reversibility is achieved by changing to chloroform as a nonselective solvent. Moreover, surfactants can be used to tune block-selective wetting of the particle surface during the annealing; for example, a PS shell can protect the internal lamellae structure from disassembly. Overall, this versatile postassembly process enables the tailoring of the structural features of striped colloidal ellipsoids by only using commercial BCPs and solvents.
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Affiliation(s)
- Lucila Navarro
- Institute of Pharmacy (Pharmaceutical Chemistry), Freie Universität Berlin, Königin-Luise Straße 2-4, 14195Berlin, Germany
| | - Andreas F. Thünemann
- Bundesanstalt für Materialforschung und -prüfung (BAM), Unter den Eichen 87, 12205Berlin, Germany
| | - Daniel Klinger
- Institute of Pharmacy (Pharmaceutical Chemistry), Freie Universität Berlin, Königin-Luise Straße 2-4, 14195Berlin, Germany
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17
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López Ruiz A, Ramirez A, McEnnis K. Single and Multiple Stimuli-Responsive Polymer Particles for Controlled Drug Delivery. Pharmaceutics 2022; 14:pharmaceutics14020421. [PMID: 35214153 PMCID: PMC8877485 DOI: 10.3390/pharmaceutics14020421] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Revised: 02/10/2022] [Accepted: 02/12/2022] [Indexed: 01/27/2023] Open
Abstract
Polymers that can change their properties in response to an external or internal stimulus have become an interesting platform for drug delivery systems. Polymeric nanoparticles can be used to decrease the toxicity of drugs, improve the circulation of hydrophobic drugs, and increase a drug’s efficacy. Furthermore, polymers that are sensitive to specific stimuli can be used to achieve controlled release of drugs into specific areas of the body. This review discusses the different stimuli that can be used for controlled drug delivery based on internal and external stimuli. Internal stimuli have been defined as events that evoke changes in different characteristics, inside the body, such as changes in pH, redox potential, and temperature. External stimuli have been defined as the use of an external source such as light and ultrasound to implement such changes. Special attention has been paid to the particular chemical structures that need to be incorporated into polymers to achieve the desired stimuli response. A current trend in this field is the incorporation of several stimuli in a single polymer to achieve higher specificity. Therefore, to access the most recent advances in stimuli-responsive polymers, the focus of this review is to combine several stimuli. The combination of different stimuli is discussed along with the chemical structures that can produce it.
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Affiliation(s)
- Aida López Ruiz
- Chemical and Materials Engineering Department, New Jersey Institute of Technology, Newark, NJ 07102, USA;
| | - Ann Ramirez
- Biomedical Engineering Department, New Jersey Institute of Technology, Newark, NJ 07102, USA;
| | - Kathleen McEnnis
- Chemical and Materials Engineering Department, New Jersey Institute of Technology, Newark, NJ 07102, USA;
- Correspondence:
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18
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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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19
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Cheng R, Jiang J, Hou J, Li G, Jiang J, Zhao Y. Water-soluble copolymers and their hydrogels with pH-tunable diverse thermoresponsive behaviors enabled by hydrogen bonding. Polym Chem 2022. [DOI: 10.1039/d2py01044e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Water-soluble copolymers display both UCST and LCST thermosensitivity in aqueous solution due to pH-determined hydrogen bonding between comonomer units, and their hydrogels can be used for information recording and encryption/decryption.
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Affiliation(s)
- Ruidong Cheng
- Département de Chimie, Université de Sherbrooke, Sherbrooke, Quebec J1K 2R1, Canada
- Key Laboratory of Syngas Conversion of Shaanxi Province, Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, Shaanxi Province, 710062, China
| | - Jie Jiang
- Département de Chimie, Université de Sherbrooke, Sherbrooke, Quebec J1K 2R1, Canada
| | - Junbo Hou
- Département de Chimie, Université de Sherbrooke, Sherbrooke, Quebec J1K 2R1, Canada
| | - Guo Li
- Key Laboratory of Syngas Conversion of Shaanxi Province, Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, Shaanxi Province, 710062, China
| | - Jinqiang Jiang
- Key Laboratory of Syngas Conversion of Shaanxi Province, Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, Shaanxi Province, 710062, China
| | - Yue Zhao
- Département de Chimie, Université de Sherbrooke, Sherbrooke, Quebec J1K 2R1, Canada
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20
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Understanding on the Surfactants Engineered Morphology Evolution of Block Copolymer Particles and Their Precise Mesoporous Silica Replicas. Chem Res Chin Univ 2021. [DOI: 10.1007/s40242-021-1403-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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21
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Janoszka N, Azhdari S, Hils C, Coban D, Schmalz H, Gröschel AH. Morphology and Degradation of Multicompartment Microparticles Based on Semi-Crystalline Polystyrene- block-Polybutadiene- block-Poly( L-lactide) Triblock Terpolymers. Polymers (Basel) 2021; 13:polym13244358. [PMID: 34960909 PMCID: PMC8706259 DOI: 10.3390/polym13244358] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Revised: 12/07/2021] [Accepted: 12/09/2021] [Indexed: 11/24/2022] Open
Abstract
The confinement assembly of block copolymers shows great potential regarding the formation of functional microparticles with compartmentalized structure. Although a large variety of block chemistries have already been used, less is known about microdomain degradation, which could lead to mesoporous microparticles with particularly complex morphologies for ABC triblock terpolymers. Here, we report on the formation of triblock terpolymer-based, multicompartment microparticles (MMs) and the selective degradation of domains into mesoporous microparticles. A series of polystyrene-block-polybutadiene-block-poly(L-lactide) (PS-b-PB-b-PLLA, SBL) triblock terpolymers was synthesized by a combination of anionic vinyl and ring-opening polymerization, which were transformed into microparticles through evaporation-induced confinement assembly. Despite different block compositions and the presence of a crystallizable PLLA block, we mainly identified hexagonally packed cylinders with a PLLA core and PB shell embedded in a PS matrix. Emulsions were prepared with Shirasu Porous Glass (SPG) membranes leading to a narrow size distribution of the microparticles and control of the average particle diameter, d ≈ 0.4 µm–1.8 µm. The core–shell cylinders lie parallel to the surface for particle diameters d < 0.5 µm and progressively more perpendicular for larger particles d > 0.8 µm as verified with scanning and transmission electron microscopy and particle cross-sections. Finally, the selective degradation of the PLLA cylinders under basic conditions resulted in mesoporous microparticles with a pronounced surface roughness.
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Affiliation(s)
- Nicole Janoszka
- Physical Chemistry, Center for Soft Nanoscience (SoN) and Center for Nanotechnology (CeNTech), University of Münster, Corrensstraße 28-30, 48149 Münster, Germany; (N.J.); (S.A.); (D.C.)
| | - Suna Azhdari
- Physical Chemistry, Center for Soft Nanoscience (SoN) and Center for Nanotechnology (CeNTech), University of Münster, Corrensstraße 28-30, 48149 Münster, Germany; (N.J.); (S.A.); (D.C.)
| | - Christian Hils
- Macromolecular Chemistry II, University of Bayreuth, Universitätsstraße 30, 95440 Bayreuth, Germany;
| | - Deniz Coban
- Physical Chemistry, Center for Soft Nanoscience (SoN) and Center for Nanotechnology (CeNTech), University of Münster, Corrensstraße 28-30, 48149 Münster, Germany; (N.J.); (S.A.); (D.C.)
| | - Holger Schmalz
- Macromolecular Chemistry II, University of Bayreuth, Universitätsstraße 30, 95440 Bayreuth, Germany;
- Bavarian Polymer Institute (BPI), University of Bayreuth, Universitätsstraße 30, 95440 Bayreuth, Germany
- Correspondence: (H.S.); (A.H.G.)
| | - André H. Gröschel
- Physical Chemistry, Center for Soft Nanoscience (SoN) and Center for Nanotechnology (CeNTech), University of Münster, Corrensstraße 28-30, 48149 Münster, Germany; (N.J.); (S.A.); (D.C.)
- Correspondence: (H.S.); (A.H.G.)
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22
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Peng R, Du C, Hu A, Li Q, Zhang J, Zhang W, Sun F. Fabrication of core-shell type poly(NIPAm)-encapsulated citral and its application on bamboo as an anti-molding coating. RSC Adv 2021; 11:36884-36894. [PMID: 35494364 PMCID: PMC9043580 DOI: 10.1039/d1ra06352a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2021] [Accepted: 11/01/2021] [Indexed: 11/21/2022] Open
Abstract
Bamboo is a widely used renewable and degradable biomass material; however, its sustainable utilisation is hindered by its susceptibility to mold. The current bamboo anti-mold technology is mainly based on organic chemical agents; these agents can easily induce mold resistance in bamboo with long-term use, and can even adversely affect human health. In the present study, the poly(N-isopropyl acrylamide) (PNIPAm)/citral nanohydrogel was prepared by encapsulating the natural antibiotic citral in PNIPAm for the anti-mold treatment of bamboo. The results revealed that this nanohydrogel exhibited a core–shell system with citral as the ‘core’ and PNIPAm as the ‘shell’, an average hydrodynamic diameter of 88.1 nm, and a low critical solution temperature (LCST) of 35.4 °C. After the high-pressure impregnation with the nanohydrogel, the bamboo strips showed excellent control effects toward common bamboo molds. Therefore, the nanohydrogel demonstrated high efficiency and it may become an ideal alternative to organic chemical anti-mold agents, thus showcasing its significant potential in the field of mold prevention for bamboo. Bamboo is a widely used renewable and degradable biomass material; however, its sustainable utilisation is hindered by its susceptibility to mold.![]()
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Affiliation(s)
- Rui Peng
- College of Chemistry and Materials Engineering, Zhejiang A & F University Hangzhou 311300 Zhejiang China
| | - Chungui Du
- College of Chemistry and Materials Engineering, Zhejiang A & F University Hangzhou 311300 Zhejiang China
| | - Ailian Hu
- College of Chemistry and Materials Engineering, Zhejiang A & F University Hangzhou 311300 Zhejiang China
| | - Qi Li
- College of Chemistry and Materials Engineering, Zhejiang A & F University Hangzhou 311300 Zhejiang China
| | - Jingjing Zhang
- College of Chemistry and Materials Engineering, Zhejiang A & F University Hangzhou 311300 Zhejiang China
| | - Weigang Zhang
- College of Chemistry and Materials Engineering, Zhejiang A & F University Hangzhou 311300 Zhejiang China
| | - Fangli Sun
- College of Chemistry and Materials Engineering, Zhejiang A & F University Hangzhou 311300 Zhejiang China
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23
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Peng R, Zhang J, Du C, Li Q, Hu A, Liu C, Chen S, Shan Y, Yin W. Investigation of the Release Mechanism and Mould Resistance of Citral-Loaded Bamboo Strips. Polymers (Basel) 2021; 13:polym13193314. [PMID: 34641130 PMCID: PMC8512208 DOI: 10.3390/polym13193314] [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: 09/06/2021] [Revised: 09/22/2021] [Accepted: 09/24/2021] [Indexed: 11/16/2022] Open
Abstract
In the present study, the sustained-release system loading citral was synthesised by using PNIPAm nanohydrogel as a carrier and analysed its drug-release kinetics and mechanism. Four release models, namely zero-order, first-order, Higuchi, and Peppas, were employed to fit the experimental data, and the underlying action mechanism was analysed. The optimised system was applied to treat a bamboo mould, followed by assessment of the mould-proof performance. Our experimental results revealed that the release kinetics equation of the system conformed to the first order; the higher the external temperature, the better the match was. In the release process, PNIPAm demonstrated a good protection and sustained-release effect on citral. Under the pressure of 0.5 MPa, immersion time of 120 min, and the system concentration ratio of 1, the optimal drug-loading parameters were obtained using the slow-release system with the best release parameters. Compared to the other conditions, bamboos treated with pressure impregnation demonstrated a better control effect on bamboo mould, while the control effect on Penicillium citrinum, Trichoderma viride, Aspergillus niger, and mixed mould was 100% after 28 days. Moreover, the structure and colour of bamboo remained unchanged during the entire process of mould control.
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24
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Two-step deswelling in the Volume Phase Transition of thermoresponsive microgels. Proc Natl Acad Sci U S A 2021; 118:2109560118. [PMID: 34508008 PMCID: PMC8449345 DOI: 10.1073/pnas.2109560118] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/04/2021] [Indexed: 11/18/2022] Open
Abstract
Microgels, colloidal-scale polymer networks, are the prototype soft colloids. When the constituent polymers are thermoresponsive, they undergo a volume phase transition (VPT) from a swollen to a collapsed state at a characteristic temperature, close to ambient one, of great appeal for several applications. To describe this phenomenon, microgels are usually treated as neutral, but here we show that electrostatics needs to be taken into account. In particular, deswelling occurs via a two-step, rather than a homogeneous, particle collapse, mainly driven by peripheral charges located on the microgel corona, for which we also establish a unifying framework encompassing all studied microgels. Our work thus provides a change of perspective to describe these fascinating systems. Thermoresponsive microgels are one of the most investigated types of soft colloids, thanks to their ability to undergo a Volume Phase Transition (VPT) close to ambient temperature. However, this fundamental phenomenon still lacks a detailed microscopic understanding, particularly regarding the presence and the role of charges in the deswelling process. This is particularly important for the widely used poly(N-isopropylacrylamide)–based microgels, where the constituent monomers are neutral but charged groups arise due to the initiator molecules used in the synthesis. Here, we address this point combining experiments with state-of-the-art simulations to show that the microgel collapse does not happen in a homogeneous fashion, but through a two-step mechanism, entirely attributable to electrostatic effects. The signature of this phenomenon is the emergence of a minimum in the ratio between gyration and hydrodynamic radii at the VPT. Thanks to simulations of microgels with different cross-linker concentrations, charge contents, and charge distributions, we provide evidence that peripheral charges arising from the synthesis are responsible for this behavior and we further build a universal master curve able to predict the two-step deswelling. Our results have direct relevance on fundamental soft condensed matter science and on applications where microgels are involved, ranging from materials to biomedical technologies.
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25
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Oh BC, Yoon E, Gong J, Kim J, Driver RW, Kim Y, Kim WY, Lee HS. Morphology Transformation of Foldamer Assemblies Triggered by Single Oxygen Atom on Critical Residue Switch. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2021; 17:e2102525. [PMID: 34310034 DOI: 10.1002/smll.202102525] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2021] [Revised: 07/06/2021] [Indexed: 06/13/2023]
Abstract
The synthesis of morphologically well-defined peptidic materials via self-assembly is challenging but demanding for biocompatible functional materials. Moreover, switching morphology from a given shape to other predictable forms by molecular modification of the identical building block is an even more complicated subject because the self-assembly of flexible peptides is prone to diverge upon subtle structural change. To accomplish controllable morphology transformation, systematic self-assembly studies are performed using congener short β-peptide foldamers to find a minimal structural change that alters the self-assembled morphology. Introduction of oxygen-containing β-amino acid (ATFC) for subtle electronic perturbation on hydrophobic foldamer induces a previously inaccessible solid-state conformational split to generate the most susceptible modification site for morphology transformation of the foldamer assemblies. The site-dependent morphological switching power of ATFC is further demonstrated by dual substitution experiments and proven by crystallographic analyses. Stepwise morphology transformation is shown by modifying an identical foldamer scaffold. This study will guide in designing peptidic molecules from scratch to create complex and biofunctional assemblies with nonspherical shapes.
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Affiliation(s)
- Byung-Chang Oh
- Center for Multiscale Chiral Architectures, Department of Chemistry, Korea Advanced Institute of Science and Technology, Yuseong-gu, Daejeon, 34141, Korea
| | - Eunyoung Yoon
- Korea Research Institute of Chemical Technology, Yuseong-gu, Daejeon, 34114, Korea
| | - Jintaek Gong
- Center for Multiscale Chiral Architectures, Department of Chemistry, Korea Advanced Institute of Science and Technology, Yuseong-gu, Daejeon, 34141, Korea
| | - Jaewook Kim
- Center for Multiscale Chiral Architectures, Department of Chemistry, Korea Advanced Institute of Science and Technology, Yuseong-gu, Daejeon, 34141, Korea
| | - Russell W Driver
- Department of Chemistry and Physics, Halmos College of Arts and Sciences, Nova Southeastern University, Fort Lauderdale, FL, 33314, USA
| | - Yongjun Kim
- Center for Multiscale Chiral Architectures, Department of Chemistry, Korea Advanced Institute of Science and Technology, Yuseong-gu, Daejeon, 34141, Korea
| | - Woo Youn Kim
- Center for Multiscale Chiral Architectures, Department of Chemistry, Korea Advanced Institute of Science and Technology, Yuseong-gu, Daejeon, 34141, Korea
| | - Hee-Seung Lee
- Center for Multiscale Chiral Architectures, Department of Chemistry, Korea Advanced Institute of Science and Technology, Yuseong-gu, Daejeon, 34141, Korea
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26
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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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Hu D, Chang X, Xu Y, Yu Q, Zhu Y. Light-Enabled Reversible Shape Transformation of Block Copolymer Particles. ACS Macro Lett 2021; 10:914-920. [PMID: 35549210 DOI: 10.1021/acsmacrolett.1c00356] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Confined self-assembly of block copolymers (BCPs) is effective to manipulate various shapes of particles. In emulsion confined self-assembly, reversibly light-trigged switchable BCP particles are extremely expected, yet rarely reported. Herein, a novel strategy is developed to realize reversibly light-responsive shape-transformation of BCP particles by constructing functional surfactants with light-active azobenzene (azo) groups in the confined self-assembly of BCPs within emulsion droplet. Ultraviolet and visible lights can reversibly modulate the amphiphilicity and interfacial affinity of the surfactants to different blocks, triggering the reversible microphase structure transformation of BCP particles with high temporal-spatial resolution. We can realize shape and morphological transitions of BCP particles from onion-shaped spherical particles to striped ellipsoids and, ultimately, to inverse onion-like particles by ultraviolet irradiation. More importantly, this shape transformation is reversible by the irradiation of visible light, attributed to the reversible trans-cis isomerization of azo groups. We also demonstrate that the light-triggered shape transformation of BCP particles can be employed in a controllable drug release through a noncontacted and programmed manner, showing promising potential in clinic and biomedicine.
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Affiliation(s)
- Dengwen Hu
- College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, No. 2318 Yuhangtang Rd., Cangqian, Yuhang District, Hangzhou 311121, China
| | - Xiaohua Chang
- College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, No. 2318 Yuhangtang Rd., Cangqian, Yuhang District, Hangzhou 311121, China
| | - Youquan Xu
- College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, No. 2318 Yuhangtang Rd., Cangqian, Yuhang District, Hangzhou 311121, China
| | - Qunli Yu
- College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, No. 2318 Yuhangtang Rd., Cangqian, Yuhang District, Hangzhou 311121, China
| | - Yutian Zhu
- College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, No. 2318 Yuhangtang Rd., Cangqian, Yuhang District, Hangzhou 311121, China
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Kim T, Xu M, Lee YJ, Ku KH, Shin DJ, Lee DC, Jang SG, Yun H, Kim BJ. Fluorescence Switchable Block Copolymer Particles with Doubly Alternate-Layered Nanoparticle Arrays. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2021; 17:e2101222. [PMID: 34114319 DOI: 10.1002/smll.202101222] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2021] [Revised: 03/28/2021] [Indexed: 06/12/2023]
Abstract
The precise self-assembly of block copolymers (BCPs) and inorganic nanoparticles (NPs) under 3D confinement offers microparticles with programmable nanostructures and functionalities. Here, fluorescence-switchable hybrid microspheres are developed by forming doubly alternating arrays of Au NPs and CdSe/ZnS quantum dots (QDs) within polystyrene-block-poly(4-vinylpyridine) (PS-b-P4VP) BCP domains. These doubly alternating arrays afford controlled nonradiative energy transfer (NRET) between the QDs and Au NPs that is dependent on the layer-to-layer distance. Solvent-selective swelling of the hybrid particles tunes the distance between layers, modulating their NRET behavior and affording switchable fluorescence. The particle fluorescence is "OFF" in water through strong NRET from the QDs to Au NPs, but is "ON" in alcohols due to the increased distance between the Au NP and QD arrays in the swollen P4VP domains. The experimentally observed NRET intensity as a function of interparticle distance shows larger quenching efficiencies than those theoretically predicted due to the enhanced quenching within a 3D-confined system. Finally, the robust and reversible fluorescence switching of the hybrid particles in different solvents is demonstrated, highlighting their potentials for bioimaging, sensing, and diagnostic applications.
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Affiliation(s)
- Taewan Kim
- 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
- 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
| | - Do Joong Shin
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Republic of Korea
| | - Doh C Lee
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Republic of Korea
| | - Se Gyu Jang
- Functional Composite Materials Research Center, Korea Institute of Science and Technology (KIST), Jeonbuk, 55324, Republic of Korea
| | - Hongseok Yun
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, 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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29
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Ren M, Hou Z, Zheng X, Xu J, Zhu J. Electrostatic Control of the Three-Dimensional Confined Assembly of Charged Block Copolymers in Emulsion Droplets. Macromolecules 2021. [DOI: 10.1021/acs.macromol.1c00575] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Min Ren
- Key Laboratory of Materials Chemistry for Energy Conversion and Storage, Ministry of Education (HUST), School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan 430074, China
| | - Zaiyan Hou
- Key Laboratory of Materials Chemistry for Energy Conversion and Storage, Ministry of Education (HUST), School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan 430074, China
| | - Xihuang Zheng
- Key Laboratory of Materials Chemistry for Energy Conversion and Storage, Ministry of Education (HUST), School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan 430074, China
| | - Jiangping Xu
- Key Laboratory of Materials Chemistry for Energy Conversion and Storage, Ministry of Education (HUST), School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan 430074, China
| | - Jintao Zhu
- Key Laboratory of Materials Chemistry for Energy Conversion and Storage, Ministry of Education (HUST), School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan 430074, China
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30
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Ku KH. Responsive Nanostructured Polymer Particles. Polymers (Basel) 2021; 13:273. [PMID: 33467649 PMCID: PMC7829942 DOI: 10.3390/polym13020273] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Revised: 01/07/2021] [Accepted: 01/12/2021] [Indexed: 11/16/2022] Open
Abstract
Responsive polymer particles with switchable properties are of great importance for designing smart materials in various applications. Recently, the self-assembly of block copolymers (BCPs) and polymer blends within evaporative emulsions has led to advances in the shape-controlled synthesis of polymer particles. Despite extensive recent progress on BCP particles, the responsive shape tuning of BCP particles and their applications have received little attention. This review provides a brief overview of recent approaches to developing non-spherical polymer particles from soft evaporative emulsions based on the physical principles affecting both particle shape and inner structure. Special attention is paid to the stimuli-responsive, shape-changing nanostructured polymer particles, i.e., design of polymers and surfactant pairs, detailed experimental results, and their applications, including the state-of-the-art progress in this field. Finally, the perspectives on current challenges and future directions in this research field are presented, including the development of surfactants with higher reversibility to multiple stimuli and polymers with unique structural functionality, and diversification of polymer architectures.
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Affiliation(s)
- Kang Hee Ku
- Department of Chemical Engineering and Applied Chemistry, Chungnam National University, Daejeon 34134, Korea
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31
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Zhang M, Hou Z, Wang H, Zhang L, Xu J, Zhu J. Shaping Block Copolymer Microparticles by pH-Responsive Core-Cross-Linked Polymeric Nanoparticles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:454-460. [PMID: 33373522 DOI: 10.1021/acs.langmuir.0c03099] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Block copolymer microparticles with controllable morphology have drawn widespread attention owing to their promising applications in photonic materials, energy storage, and other areas. Hence, it is highly desired to achieve a controllable transformation of microparticle morphology. In this work, we report a simple method to shape the morphology of polystyrene-block-poly(dimethylsiloxane) (PS-b-PDMS) microparticles, by employing core-cross-linked polymeric nanoparticles (CNPs) as cosurfactants which are synthesized through cross-linking P4VP segment of PS-block-poly(4-vinylpyridine) (PS-b-P4VP). The addition of pH-responsive CNPs makes the shape of pH-inert PS-b-PDMS microparticles sensitive to pH value. The PS-b-PDMS microparticles transformed from elongated Janus pupa-like particles to onion-like particles by decreasing the pH value of the aqueous phase. The deformation mechanism is investigated by changing pH value, the weight fraction of CNPs, and surfactant property. This study provides a facile strategy to deform microparticles of pH-inert BCPs by tuning pH value, which is anticipated to be applicable to other non-pH-responsive BCP microparticles.
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Affiliation(s)
- Mengmeng Zhang
- State Key Lab of Materials Processing and Die & Mould Technology and Key Lab of Materials Chemistry for Energy Conversion & Storage (HUST) of Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan 430074, China
| | - Zaiyan Hou
- State Key Lab of Materials Processing and Die & Mould Technology and Key Lab of Materials Chemistry for Energy Conversion & Storage (HUST) of Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan 430074, China
| | - Huiying Wang
- State Key Lab of Materials Processing and Die & Mould Technology and Key Lab of Materials Chemistry for Energy Conversion & Storage (HUST) of Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan 430074, China
| | - Lianbin Zhang
- State Key Lab of Materials Processing and Die & Mould Technology and Key Lab of Materials Chemistry for Energy Conversion & Storage (HUST) of Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan 430074, China
| | - Jiangping Xu
- State Key Lab of Materials Processing and Die & Mould Technology and Key Lab of Materials Chemistry for Energy Conversion & Storage (HUST) of Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan 430074, China
| | - Jintao Zhu
- State Key Lab of Materials Processing and Die & Mould Technology and Key Lab of Materials Chemistry for Energy Conversion & Storage (HUST) of Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan 430074, China
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32
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Deng R, Zheng L, Mao X, Li B, Zhu J. Transformable Colloidal Polymer Particles with Ordered Internal Structures. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2021; 17:e2006132. [PMID: 33373115 DOI: 10.1002/smll.202006132] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/01/2020] [Revised: 12/05/2020] [Indexed: 06/12/2023]
Abstract
Based on studies combining experiments and simulations, internally ordered colloidal particles that are able to undergo morphological transformations both in shape and internal structure are presented. The particles are prepared by emulsion solvent evaporation-induced 3D soft confined assembly of di-block copolymer polystyrene-block-poly(4-vinylpyridine) (PS-b-P4VP). Control over the solvent selectivity leads to a dramatic change in shape and internal structure for particles. Pupa-like particles of lamellar morphology are obtained when using a non-selective solvent, while patchy particles possessing a plum pudding structure formed when the solvent is selective for PS-block. More interestingly, 3D soft confined annealing drives order-order morphological transformation of the particles. The morphology of reshaped particles can be well controlled by varying the solvent selectivity, annealing time, and interfacial interaction. The experimental results can be explained based on simulations. This study can offer considerable scope for the design of new stimuli-responsive colloidal particles for potential applications in photonic crystal, drug delivery and release, sensor and smart coating, etc.
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Affiliation(s)
- Renhua Deng
- State Key Laboratory of Materials Processing and Die & Mould Technology, Key Laboratory of Material Chemistry for Energy Conversion and Storage of Ministry of Education (HUST), School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan, 430074, China
| | - Lingfei Zheng
- School of Physics and Key Laboratory of Functional Polymer Materials of the Ministry of Education, Nankai University, Tianjin, 300071, China
| | - Xi Mao
- State Key Laboratory of Materials Processing and Die & Mould Technology, Key Laboratory of Material Chemistry for Energy Conversion and Storage of Ministry of Education (HUST), School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan, 430074, China
| | - Baohui Li
- School of Physics and Key Laboratory of Functional Polymer Materials of the Ministry of Education, Nankai University, Tianjin, 300071, China
| | - Jintao Zhu
- State Key Laboratory of Materials Processing and Die & Mould Technology, Key Laboratory of Material Chemistry for Energy Conversion and Storage of Ministry of Education (HUST), School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan, 430074, China
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33
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Visaveliya NR, Köhler JM. Emerging Structural and Interfacial Features of Particulate Polymers at the Nanoscale. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:13125-13143. [PMID: 33112618 DOI: 10.1021/acs.langmuir.0c02566] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Particulate polymers at the nanoscale are exceedingly promising for diversified functional applications ranging from biomedical and energy to sensing, labeling, and catalysis. Tailored structural features (i.e., size, shape, morphology, internal softness, interior cross-linking, etc.) determine polymer nanoparticles' impact on the cargo loading capacity and controlled/sustained release, possibility of endocytosis, degradability, and photostability. The designed interfacial features, however (i.e., stimuli-responsive surfaces, wrinkling, surface porosity, shell-layer swellability, layer-by-layer surface functionalization, surface charge, etc.), regulate nanoparticles' interfacial interactions, controlled assembly, movement and collision, and compatibility with the surroundings (e.g., solvent and biological environments). These features define nanoparticles' overall properties/functions on the basis of homogeneity, stability, interfacial tension, and minimization of the surface energy barrier. Lowering of the resultant outcomes is directly influenced by inhomogeneity in the structural and interfacial design through the structure-function relationship. Therefore, a key requirement is to produce well-defined polymer nanoparticles with controlled characteristics. Polymers are amorphous, flexible, and soft, and hence controlling their structural/interfacial features through the single-step process is a challenge. The microfluidics reaction strategy is very promising because of its wide range of advantages such as efficient reactant mixing and fast phase transfer. Overall, this feature article highlights the state-of-the-art synthetic features of polymer nanoparticles with perspectives on their advanced applications.
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Affiliation(s)
- Nikunjkumar R Visaveliya
- Department of Physical Chemistry and Microreaction Technology, Technical University of Ilmenau, 98693 Ilmenau, Germany
- Department of Chemistry and Biochemistry, The City College of The City University of New York, New York, New York 10031, United States
| | - J Michael Köhler
- Department of Physical Chemistry and Microreaction Technology, Technical University of Ilmenau, 98693 Ilmenau, Germany
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Li H, Zeng Y, Zhang H, Gu Z, Gong Q, Luo K. Functional gadolinium-based nanoscale systems for cancer theranostics. J Control Release 2020; 329:482-512. [PMID: 32898594 DOI: 10.1016/j.jconrel.2020.08.064] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Revised: 08/25/2020] [Accepted: 08/30/2020] [Indexed: 02/07/2023]
Abstract
Cancer theranostics is a new strategy for combating cancer that integrates cancer imaging and treatment through theranostic agents to provide an efficient and safe way to improve cancer prognosis. Design and synthesis of these cancer theranostic agents are crucial since these agents are required to be biocompatible, tumor-specific, imaging distinguishable and therapeutically efficacious. In this regard, several types of gadolinium (Gd)-based nanomaterials have been introduced to combine different therapeutic agents with Gd to enhance the efficacy of therapeutic agents. At the same time, the entire treatment procedure could be monitored via imaging tools due to incorporation of Gd ions, Gd chelates and Gd/other imaging probes in the theranostic agents. This review aims to overview recent advances in the Gd-based nanomaterials for cancer theranostics and perspectives for Gd nanomaterial-based cancer theranostics are provided.
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Affiliation(s)
- Haonan Li
- Huaxi MR Research Center (HMRRC), Department of Radiology, Functional and Molecular Imaging Key Laboratory of Sichuan Province, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Yujun Zeng
- Huaxi MR Research Center (HMRRC), Department of Radiology, Functional and Molecular Imaging Key Laboratory of Sichuan Province, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Hu Zhang
- Amgen Bioprocessing Centre, Keck Graduate Institute, Claremont, CA 91711, USA
| | - Zhongwei Gu
- Huaxi MR Research Center (HMRRC), Department of Radiology, Functional and Molecular Imaging Key Laboratory of Sichuan Province, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Qiyong Gong
- Huaxi MR Research Center (HMRRC), Department of Radiology, Functional and Molecular Imaging Key Laboratory of Sichuan Province, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Kui Luo
- Huaxi MR Research Center (HMRRC), Department of Radiology, Functional and Molecular Imaging Key Laboratory of Sichuan Province, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu 610041, China.
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35
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Qiang X, Franzka S, Dai X, Gröschel AH. Multicompartment Microparticles of SBT Triblock Terpolymers through 3D Confinement Assembly. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c00806] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Xiaolian Qiang
- Physical Chemistry and Center for Soft Nanoscience (SoN), University of Münster, 48149 Münster, Germany
| | - Steffen Franzka
- Center for Nanointegration Duisburg-Essen (CENIDE) and Interdisciplinary Center for Analytics on the Nanoscale (ICAN), University of Duisburg-Essen, 47057 Duisburg, Germany
| | - Xuezhi Dai
- Physical Chemistry and Center for Soft Nanoscience (SoN), University of Münster, 48149 Münster, Germany
| | - André H. Gröschel
- Physical Chemistry and Center for Soft Nanoscience (SoN), University of Münster, 48149 Münster, Germany
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36
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He Q, Ku KH, Vijayamohanan H, Kim BJ, Swager TM. Switchable Full-Color Reflective Photonic Ellipsoidal Particles. J Am Chem Soc 2020; 142:10424-10430. [DOI: 10.1021/jacs.0c02398] [Citation(s) in RCA: 56] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Qilin He
- Department of Chemistry, Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, United States
| | - Kang Hee Ku
- Department of Chemistry, Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, United States
| | - Harikrishnan Vijayamohanan
- Department of Chemistry, Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, United States
| | - Bumjoon J. Kim
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Timothy M. Swager
- Department of Chemistry, Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, United States
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37
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Shin JJ, Kim EJ, Ku KH, Lee YJ, Hawker CJ, Kim BJ. 100th Anniversary of Macromolecular Science Viewpoint: Block Copolymer Particles: Tuning Shape, Interfaces, and Morphology. ACS Macro Lett 2020; 9:306-317. [PMID: 35648552 DOI: 10.1021/acsmacrolett.0c00020] [Citation(s) in RCA: 89] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Confined assembly of block copolymers (BCPs) is receiving increasing attention due to the ability to create unconventional morphologies that cannot be observed in the corresponding bulk systems. This effect is further driven by the simplicity and versatility of these procedures for controlling the shape of particles prepared by 3D soft confinement of BCPs in emulsions. By taking advantage of a mobile emulsion interface, the one-step formation of nonspherical BCP particles through spontaneous deformation is possible with design principles and theoretical models for controlling shape/nanostructure now being established. This Viewpoint highlights strategies for shape tuning of BCP particles, currently accessible shapes, their controllability, and potential application. The emergence of 3D soft confinement of BCPs and related theory is overviewed with a focus on current strategies, types of nonspherical shapes achieved, and structure-property relationships for nonspherical BCP particles. Finally, the applications and future perspectives for these materials are discussed.
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Affiliation(s)
- Jaeman J. Shin
- Materials Research Laboratory, University of California−Santa Barbara, Santa Barbara, California 93106, United States
| | | | | | | | - Craig J. Hawker
- Materials Research Laboratory, University of California−Santa Barbara, Santa Barbara, California 93106, United States
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38
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Wang D, Zhang N, Jing X, Zhang Y, Xu Y, Meng L. A tumor-microenvironment fully responsive nano-platform for MRI-guided photodynamic and photothermal synergistic therapy. J Mater Chem B 2020; 8:8271-8281. [DOI: 10.1039/d0tb01373k] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Multifunctional intelligent theranostics agents are promising for next-generation oncotherapy.
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Affiliation(s)
- Daquan Wang
- School of Chemistry
- MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter
- Xi’an Key Laboratory of Sustainable Energy Material Chemistry
- Xi’an Jiaotong University
- Xi’an 710049
| | - Ning Zhang
- School of Chemistry
- MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter
- Xi’an Key Laboratory of Sustainable Energy Material Chemistry
- Xi’an Jiaotong University
- Xi’an 710049
| | - Xunan Jing
- School of Chemistry
- MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter
- Xi’an Key Laboratory of Sustainable Energy Material Chemistry
- Xi’an Jiaotong University
- Xi’an 710049
| | - Yun Zhang
- School of Chemistry
- MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter
- Xi’an Key Laboratory of Sustainable Energy Material Chemistry
- Xi’an Jiaotong University
- Xi’an 710049
| | - Yanzi Xu
- School of Chemistry
- MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter
- Xi’an Key Laboratory of Sustainable Energy Material Chemistry
- Xi’an Jiaotong University
- Xi’an 710049
| | - Lingjie Meng
- School of Chemistry
- MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter
- Xi’an Key Laboratory of Sustainable Energy Material Chemistry
- Xi’an Jiaotong University
- Xi’an 710049
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39
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Qiang X, Dai X, Steinhaus A, Gröschel AH. Multicompartment Microparticles with Patchy Topography through Solvent-Adsorption Annealing. ACS Macro Lett 2019; 8:1654-1659. [PMID: 35619389 DOI: 10.1021/acsmacrolett.9b00713] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We report on the evaporation-induced confinement assembly (EICA) of polystyrene-b-polybutadiene-b-poly(methyl methacrylate) (PS-b-PB-b-PMMA, SBM) triblock terpolymers into multicompartment microparticles and follow their morphological evolution during solvent-adsorption annealing. We initially obtain elliptic microparticles with axially stacked PS/PB/PMMA morphology using cetyltrimethylammonium bromide (CTAB) as surfactant. Exchanging the surfactant to poly(vinyl alcohol) (PVA) during solvent vapor annealing with chloroform (CHCl3), PMMA preferentially interacts with the interface, and microparticles change their shape into spheres with concentric morphology. Surprisingly, this transformation initiates at both poles of the microparticles simultaneously and then proceeds toward the equator, resulting in particles with inner morphology and patchy topography. We observed this evolution for different PB fractions, suggesting the mechanism to be more general and the EICA process to be a suitable method to generate patchy particle surfaces.
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Affiliation(s)
- Xiaolian Qiang
- Physical Chemistry and Center for Nanointegration (CENIDE), University of Duisburg-Essen, 47057 Duisburg, Germany
| | - Xuezhi Dai
- Physical Chemistry and Center for Nanointegration (CENIDE), University of Duisburg-Essen, 47057 Duisburg, Germany
| | - Andrea Steinhaus
- 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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40
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Lu Z, Zhang Z, Tang Y. Conjugated Polymers-Based Thermal-Responsive Nanoparticles for Controlled Drug Delivery, Tracking, and Synergistic Photodynamic Therapy/Chemotherapy. ACS APPLIED BIO MATERIALS 2019; 2:4485-4492. [DOI: 10.1021/acsabm.9b00640] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Zhuanning Lu
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an 710119, P. R. China
| | - Ziqi Zhang
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an 710119, P. R. China
| | - Yanli Tang
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an 710119, P. R. China
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41
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Lee J, Ku KH, Kim J, Lee YJ, Jang SG, Kim BJ. Light-Responsive, Shape-Switchable Block Copolymer Particles. J Am Chem Soc 2019; 141:15348-15355. [DOI: 10.1021/jacs.9b07755] [Citation(s) in RCA: 72] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Junhyuk Lee
- 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 and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
- Department of Chemistry, Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, United States
| | - 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
| | - Se Gyu Jang
- Functional Composite Materials Research Center, Korea Institute of Science and Technology (KIST), Jeonbuk 55324, 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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42
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Yan N, Liu X, Zhu J, Zhu Y, Jiang W. Well-Ordered Inorganic Nanoparticle Arrays Directed by Block Copolymer Nanosheets. ACS NANO 2019; 13:6638-6646. [PMID: 31125524 DOI: 10.1021/acsnano.9b00940] [Citation(s) in RCA: 61] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Precise control over the spatial arrangement of inorganic nanoparticles on a large scale is desirable for the design of functional nanomaterials, sensing, and optical/electronic devices. Although great progress has been recently made in controlling the organization of nanoparticles, there still remains a grand challenge to arrange nanoparticles into highly-ordered arrays over multiple length scales. Here, we report the directed arrangement of inorganic nanoparticles into arrayed structures with long-range order, up to tens of microns, by using hexagonally-packed cylindrical patterns of block copolymer nanosheets self-assembled within collapsed emulsion droplets as scaffolds. This technique can be used to generate nanoparticle arrays with various nanoparticle arrangements, including hexagonal honeycomb structures, periodic nanoring structures, and their combinations. This finding provides an effective route to fabricate diverse nanoparticle arrayed structures for the design of functional materials and devices.
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Affiliation(s)
- Nan Yan
- State Key Laboratory of Polymer Physics and Chemistry , Changchun Institute of Applied Chemistry, Chinese Academy of Sciences , Changchun , Jilin 130022 , China
| | - Xuejie Liu
- State Key Laboratory of Polymer Physics and Chemistry , Changchun Institute of Applied Chemistry, Chinese Academy of Sciences , Changchun , Jilin 130022 , China
| | - Jintao Zhu
- Key Laboratory of Materials Chemistry for Energy Conversion and Storage, Ministry of Education (HUST), School of Chemistry and Chemical Engineering , Huazhong University of Science and Technology (HUST) , Wuhan , Hubei 430074 , China
| | - Yutian Zhu
- State Key Laboratory of Polymer Physics and Chemistry , Changchun Institute of Applied Chemistry, Chinese Academy of Sciences , Changchun , Jilin 130022 , China
- College of Materials, Chemistry and Chemical Engineering , Hangzhou Normal University , Hangzhou , Zhejiang 311121 , China
| | - Wei Jiang
- State Key Laboratory of Polymer Physics and Chemistry , Changchun Institute of Applied Chemistry, Chinese Academy of Sciences , Changchun , Jilin 130022 , China
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43
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Cui T, Li X, Dong B, Li X, Guo M, Wu L, Li B, Li H. Janus onions of block copolymers via confined self-assembly. POLYMER 2019. [DOI: 10.1016/j.polymer.2019.04.062] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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44
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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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45
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Lee J, Ku KH, Park CH, Lee YJ, Yun H, Kim BJ. Shape and Color Switchable Block Copolymer Particles by Temperature and pH Dual Responses. ACS NANO 2019; 13:4230-4237. [PMID: 30856312 DOI: 10.1021/acsnano.8b09276] [Citation(s) in RCA: 56] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Herein, we report a simple and robust strategy for preparing dual-responsive shape-switchable block copolymer (BCP) particles, which respond to subtle temperature and pH changes near physiological conditions (i.e., human body temperature and neutral pH). The shape transition of polystyrene- b-poly(4-vinylpyridine) BCP particles between lens and football shapes occurs in very narrow temperature and pH ranges: no temperature-based transition for pH 6.0, 40-50 °C transition for pH 6.5, and 25-35 °C for pH 7.0. To achieve these shape transitions, temperature/pH-responsive polymer surfactants of poly( N-(2-(diethylamino)ethyl)acrylamide- r- N-isopropylacrylamide) are designed to induce dramatic changes in relative solubility and their location in response to temperature and pH changes near physiological conditions. In addition, the BCP particles exhibit reversible shape-transforming behavior according to orthogonal temperature and pH changes. Colorimetric measurements of temperature and pH changes are enabled by shape-transforming properties combined with selective positioning of dyes, suggesting promising potential for these particles in clinical and biomedical applications.
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Affiliation(s)
- Junhyuk Lee
- Department of Chemical and Biomolecular Engineering , Korea Advanced Institute of Science and Technology , Daejeon 34141 , Republic of Korea
| | - Kang Hee Ku
- Department of Chemical and Biomolecular Engineering , Korea Advanced Institute of Science and Technology , Daejeon 34141 , Republic of Korea
| | - Chan Ho Park
- Department of Chemical and Biomolecular Engineering , Korea Advanced Institute of Science and Technology , Daejeon 34141 , Republic of Korea
| | - Young Jun Lee
- Department of Chemical and Biomolecular Engineering , Korea Advanced Institute of Science and Technology , Daejeon 34141 , Republic of Korea
| | - Hongseok Yun
- Department of Chemical and Biomolecular Engineering , Korea Advanced Institute of Science and Technology , Daejeon 34141 , Republic of Korea
| | - Bumjoon J Kim
- Department of Chemical and Biomolecular Engineering , Korea Advanced Institute of Science and Technology , Daejeon 34141 , Republic of Korea
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46
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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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47
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Ku KH, Lee YJ, Kim Y, Kim BJ. Shape-Anisotropic Diblock Copolymer Particles from Evaporative Emulsions: Experiment and Theory. Macromolecules 2019. [DOI: 10.1021/acs.macromol.8b02465] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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48
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Kim EJ, Shin JM, Kim Y, Ku KH, Yun H, Kim BJ. Shape control of nanostructured cone-shaped particles by tuning the blend morphology of A-b-B diblock copolymers and C-type copolymers within emulsion droplets. Polym Chem 2019. [DOI: 10.1039/c9py00306a] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
An approach to blend AB-type block copolymers and C-type copolymers within the emulsion droplet is an efficient particle shape-engineering strategy.
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Affiliation(s)
- Eun Ji Kim
- Department of Chemical and Biomolecular Engineering
- Korea Advanced Institute of Science and Technology (KAIST)
- Daejeon
- 34141 Republic of Korea
| | - Jae Man Shin
- Department of Chemical and Biomolecular Engineering
- Korea Advanced Institute of Science and Technology (KAIST)
- Daejeon
- 34141 Republic of Korea
| | - YongJoo Kim
- KAIST Institute for Nanocentury
- Korea Advanced Institute of Science and Technology (KAIST)
- Daejeon
- 34141 Republic of Korea
| | - Kang Hee Ku
- Department of Chemical and Biomolecular Engineering
- Korea Advanced Institute of Science and Technology (KAIST)
- Daejeon
- 34141 Republic of Korea
| | - Hongseok Yun
- Department of Chemical and Biomolecular Engineering
- Korea Advanced Institute of Science and Technology (KAIST)
- Daejeon
- 34141 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
- KAIST Institute for Nanocentury
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49
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Liu D, Suo Y, Tan J, Zhu P, Zhao J, Wang B, Lu H. Tertiary Amine-Naphthenic Acid Self-Assembled Surfactants for Viscosity Reduction of Crude Oil. Chem Eng Technol 2018. [DOI: 10.1002/ceat.201700489] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Dongfang Liu
- Southwest Petroleum University; College of Chemistry and Chemical Engineering; No. 8 Xindu Avenue 610500 Chengdu China
| | - Yuxin Suo
- Southwest Petroleum University; College of Chemistry and Chemical Engineering; No. 8 Xindu Avenue 610500 Chengdu China
| | - Jiang Tan
- Southwest Petroleum University; College of Chemistry and Chemical Engineering; No. 8 Xindu Avenue 610500 Chengdu China
| | - Peiyao Zhu
- Southwest Petroleum University; College of Chemistry and Chemical Engineering; No. 8 Xindu Avenue 610500 Chengdu China
| | - Jihe Zhao
- Southwest Petroleum University; College of Chemistry and Chemical Engineering; No. 8 Xindu Avenue 610500 Chengdu China
| | - Baogang Wang
- Southwest Petroleum University; College of Chemistry and Chemical Engineering; No. 8 Xindu Avenue 610500 Chengdu China
| | - Hongsheng Lu
- Southwest Petroleum University; College of Chemistry and Chemical Engineering; No. 8 Xindu Avenue 610500 Chengdu China
- Ministry of Education; Engineering Research Center of Oilfield Chemistry; No. 8 Xindu Avenue 610500 Chengdu China
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50
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Huo M, Song G, Zhang J, Wei Y, Yuan J. Nonspherical Liquid Crystalline Assemblies with Programmable Shape Transformation. ACS Macro Lett 2018; 7:956-961. [PMID: 35650972 DOI: 10.1021/acsmacrolett.8b00409] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Liquid crystalline (LC) assemblies with tailored shape and programmable shape transformation were prepared via polymerization-induced self-assembly. The influence of polymerization temperature and solvent on the shape of the LC assemblies indicated that shape of the LC assemblies could be delicately regulated by the repulsive interaction among the solvophilic chains and LC ordering. Programmable shape transformation of ellipsoidal LC assemblies was achieved, taking advantage of the smectic-to-isotropic phase transition. The ellipsoidal assemblies could remain ellipsoids or transform to faceted spheres and spheres, depending on the temperature procedure used. Besides, the generated spheres could be reshaped to ellipsoids with high shape recovery ratio. Small angle X-ray scattering study indicated that the interplay of the reversible smectic-to-isotropic phase transition and kinetic trapping underpins the programmed shape transformation. As a general approach to LC assemblies with programmable shape transformation, our strategy would provide a reliable platform for nanoactuators, nanomotors, and adaptive colloidal devices.
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Affiliation(s)
| | - Guangjie Song
- CAS Key Laboratory of Engineering Plastics and CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing 100190, China
| | - Jun Zhang
- CAS Key Laboratory of Engineering Plastics and CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing 100190, China
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