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Assembly of Semiconductor Nanorods into Circular Arrangements Mediated by Block Copolymer Micelles. MATERIALS 2022; 15:ma15082949. [PMID: 35454639 PMCID: PMC9028013 DOI: 10.3390/ma15082949] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Revised: 04/11/2022] [Accepted: 04/14/2022] [Indexed: 01/27/2023]
Abstract
The collective properties of ordered ensembles of anisotropically shaped nanoparticles depend on the morphology of organization. Here, we describe the utilization of block copolymer micelles to bias the natural packing tendency of semiconductor nanorods and organize them into circularly arranged superstructures. These structures are formed as a result of competition between the segregation tendency of the nanorods in solution and in the polymer melt; when the nanorods are highly compatible with the solvent but prefer to segregate in the melt to the core-forming block, they migrate during annealing toward the core–corona interface, and their superstructure is, thus, templated by the shape of the micelle. The nanorods, in turn, exhibit surfactant-like behavior and protect the micelles from coalescence during annealing. Lastly, the influence of the attributes of the micelles on nanorod organization is also studied. The circular nanorod arrangements and the insights gained in this study add to a growing list of possibilities for organizing metal and semiconductor nanorods that can be achieved using rational design.
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2
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Zhang Q, Huang X, Zhang L, Jin Z. Isothermal Titration Calorimetry Directly Measures the Selective Swelling of Block Copolymer Vesicles in the Presence of Organic Acid. ACS OMEGA 2022; 7:10580-10587. [PMID: 35382279 PMCID: PMC8973060 DOI: 10.1021/acsomega.2c00124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2022] [Accepted: 03/02/2022] [Indexed: 05/06/2023]
Abstract
Block copolymer (BCP) vesicles loaded with drug molecules may have a nonidentical swelling behavior due to the strong interactions between BCP vesicles and loaded molecules. A thermodynamic study of the swelling for such a system is of great importance in clarifying their pH-gated drug delivery behavior. In this study, the selective swelling of polystyrene-block-poly(2-vinylpyridine) (PS-b-P2VP) vesicles in the presence of different acids was compared using dynamic light scattering, zeta-potential, and isothermal titration calorimetry (ITC) measurements. Transmission electron microscopy observation verified that these PS-b-P2VP vesicles were mainly multilamellar. Importantly, using the ITC measurement, we first compared the thermodynamic parameters, including ΔH, ΔG, and ΔS, association binding sites (N), and binding association constants (K a) in the selective swelling of the PS-b-P2VP vesicles in low pH (pH ∼3.5), with or without a hydrogen bonding interaction. We observed that the existence of a hydrogen bonding interaction between tartaric acid/malic acid and PS-b-P2VP generates a limitation to the selective swelling of PS-b-P2VP vesicles, in which conditions will depend on the molecular structures of the organic acids and PS-b-P2VP. This work first provides a quantitative insight on the swelling of BCP vesicles in the presence of hydrogen bonding and highlights the power of ITC measurements for investigating the structural transformation of polymer nanostructures.
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3
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Göbel C, Marquardt K, Baabe D, Drechsler M, Loch P, Breu J, Greiner A, Schmalz H, Weber B. Realizing shape and size control for the synthesis of coordination polymer nanoparticles templated by diblock copolymer micelles. NANOSCALE 2022; 14:3131-3147. [PMID: 35142327 DOI: 10.1039/d1nr07743k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
The combination of polymers with nanoparticles offers the possibility to obtain customizable composite materials with additional properties such as sensing or bistability provided by a switchable spin crossover (SCO) core. For all applications, a precise control over size and shape of the nanomaterial is highly important as it will significantly influence its final properties. By confined synthesis of iron(II) SCO coordination polymers within the P4VP cores of polystyrene-block-poly(4-vinylpyridine) (PS-b-P4VP) micelles in THF we are able to control the size and also the shape of the resulting SCO nanocomposite particles by the composition of the PS-b-P4VP diblock copolymers (dBCPs) and the amount of complex employed. For the nanocomposite samples with the highest P4VP content, a morphological transition from spherical nanoparticles to worm-like structures was observed with increasing coordination polymer content, which can be explained with the impact of complex coordination on the self-assembly of the dBCP. Furthermore, the SCO nanocomposites showed transition temperatures of T1/2 = 217 K, up to 27 K wide hysteresis loops and a decrease of the residual high-spin fraction down to γHS = 14% in the worm-like structures, as determined by magnetic susceptibility measurements and Mössbauer spectroscopy. Thus, SCO properties close or even better (hysteresis) to those of the bulk material can be obtained and furthermore tuned through size and shape control realized by tailoring the block length ratio of the PS-b-P4VP dBCPs.
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Affiliation(s)
- Christoph Göbel
- Department of Chemistry, Inorganic Chemistry IV, Universität Bayreuth, Universitätsstr. 30, 95447 Bayreuth, Germany.
| | - Katharina Marquardt
- Bavarian Research Institute of Experimental Geochemistry and Geophysics (BGI), Universität Bayreuth, Universitätsstr. 30, 95447 Bayreuth, Germany
| | - Dirk Baabe
- Institut für Anorganische und Analytische Chemie, Technische Universität Braunschweig, Hagenring 30, 38106 Braunschweig, Germany
| | - Markus Drechsler
- Bavarian Polymer Institute (BPI), Universität Bayreuth, Universitätsstr. 30, 95447 Bayreuth, Germany
| | - Patrick Loch
- Department of Chemistry, Inorganic Chemistry I, Universität Bayreuth, Universitätsstr. 30, 95447 Bayreuth, Germany
| | - Josef Breu
- Department of Chemistry, Inorganic Chemistry I, Universität Bayreuth, Universitätsstr. 30, 95447 Bayreuth, Germany
| | - Andreas Greiner
- Department of Chemistry, Macromolecular Chemistry II and Bavarian Polymer Institute (BPI), Universität Bayreuth, Universitätsstr. 30, 95447 Bayreuth, Germany
| | - Holger Schmalz
- Department of Chemistry, Macromolecular Chemistry II and Bavarian Polymer Institute (BPI), Universität Bayreuth, Universitätsstr. 30, 95447 Bayreuth, Germany
| | - Birgit Weber
- Department of Chemistry, Inorganic Chemistry IV, Universität Bayreuth, Universitätsstr. 30, 95447 Bayreuth, Germany.
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4
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Odom TL, Blankenship JR, Campos G, Mart DC, Liu W, Wang R, Yoshimatsu K. Effect of vortex‐induced physical stress on fluorescent properties of dye‐containing poly(ethylene glycol)‐
block
‐poly
(lactic acid) micelles. J Appl Polym Sci 2021. [DOI: 10.1002/app.49743] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Tyler L. Odom
- Department of Chemistry Missouri State University Springfield Missouri USA
| | | | - Giselle Campos
- Department of Chemistry Missouri State University Springfield Missouri USA
| | - Devin C. Mart
- Department of Chemistry Missouri State University Springfield Missouri USA
| | - Wenyan Liu
- Center for Research in Energy and Environment Missouri University of Science and Technology Rolla Missouri USA
- Department of Chemistry Missouri University of Science and Technology Rolla Missouri USA
| | - Risheng Wang
- Department of Chemistry Missouri University of Science and Technology Rolla Missouri USA
| | - Keiichi Yoshimatsu
- Department of Chemistry Missouri State University Springfield Missouri USA
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5
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Li F, Wang K, Tan Z, Guo C, Liu Y, Tan H, Zhang L, Zhu J. Solvent Quality-Mediated Regioselective Modification of Gold Nanorods with Thiol-Terminated Polymers. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:15162-15168. [PMID: 33256408 DOI: 10.1021/acs.langmuir.0c02905] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Modification of nanorods (NRs) with functional polymer ligands is of great significance to enhance their surface chemistry and prompt their applications in many fields (e.g., photothermal therapy, bioimaging, and catalysis). However, the regioselective modification of AuNRs still remains a great challenge. Herein, we introduce a facile yet versatile strategy to achieve the regioselective modification of AuNRs through a solvent quality-mediated strategy. By employing a poor solvent of the original ligand cetyltrimethylammonium bromide (CTAB) as the medium in the modification, polymer ligands would selectively graft onto the two ends of AuNRs, while polymer ligands would graft onto the entire surface when employing a good solvent. This strategy demonstrates good reproducibility and is applicable to both hydrophilic and hydrophobic polymer ligand modifications. Moreover, by combing our strategy with the preoccupation route, the two ends and sidewall of AuNRs modified by two different polymers form an "ABA"-type building block, which can further self-assemble into well-ordered superstructures. Our finding provides a new opportunity for multifunctionalization of NRs.
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Affiliation(s)
- Fan Li
- State Key Laboratory of Materials Processing and Die & Mould Technology, Key Laboratory of Materials Chemistry for Energy Conversion and Storage (HUST) of Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan 430074, China
| | - Ke Wang
- State Key Laboratory of Materials Processing and Die & Mould Technology, Key Laboratory of Materials Chemistry for Energy Conversion and Storage (HUST) of Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan 430074, China
| | - Zhengping Tan
- State Key Laboratory of Materials Processing and Die & Mould Technology, Key Laboratory of Materials Chemistry for Energy Conversion and Storage (HUST) of Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan 430074, China
| | - Chen Guo
- State Key Laboratory of Materials Processing and Die & Mould Technology, Key Laboratory of Materials Chemistry for Energy Conversion and Storage (HUST) of Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan 430074, China
| | - Yuanyuan Liu
- State Key Laboratory of Materials Processing and Die & Mould Technology, Key Laboratory of Materials Chemistry for Energy Conversion and Storage (HUST) of Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan 430074, China
| | - Haiying Tan
- State Key Laboratory of Materials Processing and Die & Mould Technology, Key Laboratory of Materials Chemistry for Energy Conversion and 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 Laboratory of Materials Processing and Die & Mould Technology, Key Laboratory of Materials Chemistry for Energy Conversion and 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 Laboratory of Materials Processing and Die & Mould Technology, Key Laboratory of Materials Chemistry for Energy Conversion and 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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7
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Yue X, Geng Z, Yan N, Jiang W. Hierarchical self-assembly of a PS-b-P4VP/PS-b-PNIPAM mixture into multicompartment micelles and their response to two-dimensional confinement. Phys Chem Chem Phys 2020; 22:1194-1203. [DOI: 10.1039/c9cp05180e] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Finely tuned synergistic effects among different blocks could realize intriguing hierarchical self-assembly of block copolymers and such hierarchical self-assembly could be manipulated by cylindrical confinement to tune the structures of assemblies.
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Affiliation(s)
- Xuan Yue
- State Key Laboratory of Polymer Physics and Chemistry
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022
- China
| | - Zhen Geng
- State Key Laboratory of Polymer Physics and Chemistry
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022
- China
| | - Nan Yan
- State Key Laboratory of Polymer Physics and Chemistry
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022
- China
| | - Wei Jiang
- State Key Laboratory of Polymer Physics and Chemistry
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022
- China
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8
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Liu W, Chen H, Pan D, Ji X. Electrostatic Interaction Mediates the Formation of Vesicular Structures from Coassembly of PS- b-PAA with Quantum Dots. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:12501-12508. [PMID: 31503496 DOI: 10.1021/acs.langmuir.9b02254] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Vesicular structures of block copolymers and inorganic nanoparticles with good stability have potential applications in therapeutic drug release and bioimaging. Herein, a block copolymer of polystyrene-b-poly(acrylic acid) (PS48-b-PAA67) and water-soluble AgInS2/ZnS core/shell quantum dots (QDs) capped with gelatin and thioglycolic acid were coassembled in tetrahydrofuran by adding water. The positively charged QDs bind to negatively charged PAA segments through electrostatic interaction. Numerous vesicular structures, such as uniform bilayer vesicles, flowerlike large compound vesicles, onionlike lamellar structures consisting of alternating PS and PAA&QD layers, and multilamellar vesicles with spaces between concentric vesicle layers were obtained from the coassembly of PS48-b-PAA67 with QDs. The binding of the positively charged QDs to the PAA block influenced both the intra-aggregate PAA corona conformation and the interaggregate interactions. The key parameters affecting the formation of these vesicular structures included the QD content, solution pH, and water addition rate. Thus, tunable vesicular structures can be prepared and regulated through this simple but effective coassembly method.
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Affiliation(s)
| | - Hongxiang Chen
- University of Science and Technology of China , Hefei 230026 , People's Republic of China
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9
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Montaudo MS, Puglisi C, Battiato S, Zappia S, Destri S, Samperi F. An innovative approach for the chemical structural characterization of poly(styrene 4-vinylpyridine) copolymers by matrix-assisted laser desorption/ionization time of flight mass spectrometry. J Appl Polym Sci 2018. [DOI: 10.1002/app.46976] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- M. S. Montaudo
- Istituto per i Polimeri; Compositi e Biomateriali (IPCB) Sede Secondaria di Catania, CNR; Via Gaifami 18, 95126 Catania Italy
| | - C. Puglisi
- Istituto per i Polimeri; Compositi e Biomateriali (IPCB) Sede Secondaria di Catania, CNR; Via Gaifami 18, 95126 Catania Italy
| | - S. Battiato
- Istituto per i Polimeri; Compositi e Biomateriali (IPCB) Sede Secondaria di Catania, CNR; Via Gaifami 18, 95126 Catania Italy
| | - S. Zappia
- Istituto per lo Studio delle Macromolecole (ISMAC), CNR; Via A. Corti 12, 20133 Milan Italy
| | - S. Destri
- Istituto per lo Studio delle Macromolecole (ISMAC), CNR; Via A. Corti 12, 20133 Milan Italy
| | - F. Samperi
- Istituto per i Polimeri; Compositi e Biomateriali (IPCB) Sede Secondaria di Catania, CNR; Via Gaifami 18, 95126 Catania Italy
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10
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Bakshi MS. Engineered nanomaterials growth control by monomers and micelles: From surfactants to surface active polymers. Adv Colloid Interface Sci 2018; 256:101-110. [PMID: 29731110 DOI: 10.1016/j.cis.2018.04.012] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2017] [Revised: 04/12/2018] [Accepted: 04/23/2018] [Indexed: 01/05/2023]
Abstract
In pseudo-micellar phase, the crystal growth is primarily achieved by the surface activity of the monomers in the presence of micelles. To ensure the maximum potential of surface activity of monomers in morphology control, a micellar phase is required. This account specifically focuses on the crystal growth control by the surface active monomers of conventional surfactants and that of water soluble polymers. It also distinguishes the mechanisms involved in the shape control driven by the micellar phase of micelle forming polymers, their role as nanoreactors, micellar stability, and micellar transitions from the monomeric phase. The fundamental basis of the crystal growth control by the surface active agents holds the key of using other non-convectional surface active species like proteins, carbohydrates, and bioactive polymers to achieve morphology control bionanomaterials for their specific biological applications.
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Affiliation(s)
- Mandeep Singh Bakshi
- Department of Natural and Applied Sciences, University of Wisconsin - Green Bay, 2420 Nicolet Drive, Green Bay, WI 54311-7001, USA.
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11
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Nabar GM, Winter JO, Wyslouzil BE. Nanoparticle packing within block copolymer micelles prepared by the interfacial instability method. SOFT MATTER 2018; 14:3324-3335. [PMID: 29652417 DOI: 10.1039/c8sm00425k] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The interfacial instability method has emerged as a viable approach for encapsulating high concentrations of nanoparticles (NPs) within morphologically diverse micelles. In this method, transient interfacial instabilities at the surface of an emulsion droplet guide self-assembly of block co-polymers and NP encapsulants. Although used by many groups, there are no systematic investigations exploring the relationship between NP properties and micelle morphology. Here, the effect of quantum dot (QD) and superparamagnetic iron oxide NP (SPION) concentration on the shape, size, and surface deformation of initially spherical poly(styrene-b-ethylene oxide) (PS-b-PEO) micelles was examined. Multi-NP encapsulation and uniform dispersion within micelles was obtained even at low NP concentrations. Increasing NP concentration initially resulted in larger numbers of elongated micelles and cylinders with tightly-controlled diameters smaller than those of spherical micelles. Beyond a critical NP concentration, micelle formation was suppressed; the dominant morphology became densely-loaded NP structures that were coated with polymer and exhibited increased polydispersity. Transmission electron microscopy (TEM) and small angle X-ray scattering (SAXS) revealed that NPs in densely-loaded structures can be well-ordered, with packing volume fractions of up to 24%. These effects were enhanced in magnetic composites, possibly by dipole interactions. Mechanisms governing phase transitions triggered by NP loading in the interfacial instability process were proposed. The current study helps establish and elucidate the active role played by NPs in directing block copolymer assembly in the interfacial instability process, and provides important guiding principles for the use of this approach in generating NP-loaded block copolymer composites.
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Affiliation(s)
- Gauri M Nabar
- William G. Lowrie Department of Chemical and Biomolecular Engineering, The Ohio State University, 151 W. Woodruff Ave., Columbus, OH 43210, USA.
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12
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Liu G, Xue M, Zhou Y. Linear-Dendritic Block Copolymer Containing Fluorescent Groups: An Effective and Environmentally Benign Inhibitor for Calcium Carbonate. TENSIDE SURFACT DET 2018. [DOI: 10.3139/113.110539] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Abstract
A novel fluorescent-tagged scale inhibitor, the linear-dendritic double hydrophilic block copolymer [acrylic acid (AA)/allyloxy poly(ethylene glycol) polyglycerol (APEG-PG-(OH)n)/8-allyloxy-1,3,6-pyrene trisulfonic acid trisodium salt (PA) (AA/APEG-PG-(OH)n/PA)] was synthesized by polymerisation of AA, APEG-PG-(OH)n and PA. Structures of APEG, APEG-PG-(OH)n and AA/APEG-PG-(OH)n/PA were determined by 1HNMR. The experiments show that the dosage and the n value of AA/APEG-PG-(OH)n/PA play an important role on CaCO3 inhibition. The polymer AA/APEG-PG-(OH)5/PA displays a 90% inhibition of CaCO3 precipitate formation at a dosage of 8 mg/L. The relationship between the fluorescent intensity of AA/APEG-PG-(OH)5/PA and the dosage of this polymer was studied. The correlation coefficient R of AA/APEG-PG-(OH)5/PA's is 0.9995. The effect on formation of CaCO3 was investigated with combination of XRD and SEM analysis. Finally, the significant cause and mechanism for calcium carbonate inhibition were analysed in depth.
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Affiliation(s)
- Guangqing Liu
- School of Environmental Science , Nanjing Xiaozhuang University, Nanjing 211171 , P.R. China
- School of Chemistry and Chemical Engineering , Southeast University, Nanjing 211189 , P.R. China
| | - Mengwei Xue
- School of Environmental Science , Nanjing Xiaozhuang University, Nanjing 211171 , P.R. China
| | - Yuming Zhou
- School of Chemistry and Chemical Engineering , Southeast University, Nanjing 211189 , P.R. China
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13
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Structural control of the hybrid colloids by cooperative assembly of PS-b-PAA and semiconductor nanoparticles from the solvent aspects. Colloid Polym Sci 2017. [DOI: 10.1007/s00396-017-4070-4] [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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14
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Liu W, Mao J, Xue Y, Zhao Z, Zhang H, Ji X. Nanoparticle Loading Induced Morphological Transitions and Size Fractionation of Coassemblies from PS-b-PAA with Quantum Dots. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:7596-7605. [PMID: 27447738 DOI: 10.1021/acs.langmuir.6b02202] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Inorganic nanoparticles play a very important role in the fabrication and regulation of desirable hybrid structures with block copolymers. In this study, polystyrene-b-poly(acrylic acid) (PS48-b-PAA67) and oleic acid-capped CdSe/CdS core/shell quantum dots (QDs) are coassembled in tetrahydrofuran (THF) through gradual water addition. QDs are incorporated into the hydrophilic PAA blocks because of the strong coordination between PAA blocks and the surface of QDs. Increasing the weight fraction of QDs (ω = 0-0.44) leads to morphological transitions from hybrid spherical micelles to large compound micelles (LCMs) and then to bowl-shaped structures. The coassembly process is monitored using transmission electron microscopy (TEM). Formation mechanism of different morphologies is further proposed in which the PAA blocks bridging QDs manipulates the polymer chain mobility and the resulting morphology. Furthermore, the size and size distribution of assemblies serving as drug carriers will influence the circulation time, organ distribution and cell entry pathway of assemblies. Therefore, it is important to prepare or isolate assemblies with monodisperse or narrow size distribution for biomedical applications. Here, the centrifugation and membrane filtration techniques are applied to fractionate polydisperse coassemblies, and the results indicate that both techniques provide effective size fractionation.
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Affiliation(s)
- Wei Liu
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences , Changchun 130022, People's Republic of China
- University of Chinese Academy of Sciences , Beijing 100049, People's Republic of China
| | - Jun Mao
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences , Changchun 130022, People's Republic of China
| | - Yanhu Xue
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences , Changchun 130022, People's Republic of China
| | - Ziliang Zhao
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences , Changchun 130022, People's Republic of China
| | - Haishan Zhang
- Department of Colorectal and Anal Surgery, China-Japan Union Hospital, Jilin University , Changchun 130033, People's Republic of China
| | - Xiangling Ji
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences , Changchun 130022, People's Republic of China
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15
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Influence of mixed common solvent on the co-assembled morphology of PS-b-PEO and CdS quantum dots. CHINESE JOURNAL OF POLYMER SCIENCE 2016. [DOI: 10.1007/s10118-016-1824-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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16
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So S, Lodge TP. Size Control and Fractionation of Ionic Liquid Filled Polymersomes with Glassy and Rubbery Bilayer Membranes. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:4959-4968. [PMID: 27159064 DOI: 10.1021/acs.langmuir.6b00946] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
We demonstrate control over the size of ionic liquid (IL) filled polymeric vesicles (polymersomes) by three distinct methods: mechanical extrusion, cosolvent-based processing in an IL, and fractionation of polymersomes in a biphasic system of IL and water. For the representative ionic liquid (1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl) imide ([EMIM][TFSI])), the size and dispersity of polymersomes formed from 1,2-polybutadiene-b-poly(ethylene oxide) (PB-PEO) and polystyrene-b-poly(ethylene oxide) (PS-PEO) diblock copolymers were shown to be sensitive to assembly conditions. During mechanical extrusion through a polycarbonate membrane, the relatively larger polymersomes were broken up and reorganized into vesicles with mean size comparable to the membrane pore (100 nm radius); the distribution width also decreased significantly after only a few passes. Other routes were studied using the solvent-switch or cosolvent (CS) method, whereby the initial content of the cosolvent and the PEO block length of PS-PEO were systemically changed. The nonvolatility of the ionic liquid directly led to the desired concentration of polymersomes in the ionic liquid using a single step, without the dialysis conventionally used in aqueous systems, and the mean vesicle size depended on the amount of cosolvent employed. Finally, selective phase transfer of PS-PEO polymersomes based on size was used to extract larger polymersomes from the IL to the aqueous phase via interfacial tension controlled phase transfer. The interfacial tension between the PS membrane and the aqueous phase was varied with the concentration of sodium chloride (NaCl) in the aqueous phase; then the larger polymersomes were selectively separated to the aqueous phase due to differences in shielding of the hydrophobic core (PS) coverage by the hydrophilic corona brush (PEO). This novel fractionation is a simple separation process without any special apparatus and can help to prepare monodisperse polymersomes and also separate unwanted morphologies (in this case, worm-like micelles).
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Affiliation(s)
- Soonyong So
- Department of Chemical Engineering & Materials Science and ‡Department of Chemistry, University of Minnesota , Minneapolis, Minnesota 55455, United States
| | - Timothy P Lodge
- Department of Chemical Engineering & Materials Science and ‡Department of Chemistry, University of Minnesota , Minneapolis, Minnesota 55455, United States
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17
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Wang S, Ryan JW, Singh A, Beirne JG, Palomares E, Redmond G. Encapsulation of MEH-PPV:PCBM Hybrids in the Cores of Block Copolymer Micellar Assemblies: Photoinduced Electron Transfer in a Nanoscale Donor-Acceptor System. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:329-337. [PMID: 26653672 DOI: 10.1021/acs.langmuir.5b04053] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The objective of this work is to demonstrate that conjugated polymer:fullerene hybrid nanoparticles encapsulated in the hydrophobic cores of triblock copolymer micelles may successfully act as spatially confined donor-acceptor systems capable of facilitating photoinduced charge carrier separation. To this end, aqueous dispersions of poly[2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylenevinylene] (MEH-PPV) nanoparticles were first prepared by solubilization of the polymer in the cores of poly(oxyethylene)-poly(oxypropylene)-poly(oxyethylene) triblock copolymer, Pluronic F-127 micelles. A number of significant optical spectroscopic changes were observed on transfer of the conjugated polymer from a nonaqueous solvent to the aqueous micellar environment. These were primarily attributed to increased interchain interactions due to conjugated polymer chain collapse during encapsulation in the micellar cores. When prepared in buffer solution, the micelles exhibited good long-term collodial stability. When MEH-PPV micelles were blended by the addition of controlled amounts of [6,6]-phenyl-C61-butyric acid methyl ester (PCBM), the observed correspondence of photoluminescence emission quenching, quantum yield decreases, and emission lifetime shortening with increasing PCBM concentration indicated efficient photoinduced donor-to-acceptor charge transfer between MEH-PPV and the fullerenes in the cores of the micelles, an assignment that was confirmed by transient absorption spectroscopic monitoring of carrier photogeneration and recombination.
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Affiliation(s)
- Suxiao Wang
- School of Chemistry, University College Dublin , Belfield, Dublin 4, Ireland
| | - James William Ryan
- Institute of Chemical Research of Catalonia (ICIQ), Avinguda Països Catalans 16, 43007 Tarragona, Spain
| | - Amita Singh
- School of Chemistry, University College Dublin , Belfield, Dublin 4, Ireland
| | - Jason Gerard Beirne
- School of Chemistry, University College Dublin , Belfield, Dublin 4, Ireland
| | - Emilio Palomares
- Institute of Chemical Research of Catalonia (ICIQ), Avinguda Països Catalans 16, 43007 Tarragona, Spain
- Institució Catalana de Recerca i Estudis Avançats (ICREA), Passeig Lluís Companys 23, 08010 Barcelona, Spain
| | - Gareth Redmond
- School of Chemistry, University College Dublin , Belfield, Dublin 4, Ireland
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18
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Truong NP, Quinn JF, Whittaker MR, Davis TP. Polymeric filomicelles and nanoworms: two decades of synthesis and application. Polym Chem 2016. [DOI: 10.1039/c6py00639f] [Citation(s) in RCA: 99] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
This review highlights the substantial progress in the syntheses and applications of filomicelles, an emerging nanomaterial with distinct and useful properties.
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Affiliation(s)
- Nghia P. Truong
- ARC Centre of Excellence in Convergent Bio-Nano Science & Technology
- Monash Institute of Pharmaceutical Sciences
- Monash University
- Melbourne
- Australia
| | - John F. Quinn
- ARC Centre of Excellence in Convergent Bio-Nano Science & Technology
- Monash Institute of Pharmaceutical Sciences
- Monash University
- Melbourne
- Australia
| | - Michael R. Whittaker
- ARC Centre of Excellence in Convergent Bio-Nano Science & Technology
- Monash Institute of Pharmaceutical Sciences
- Monash University
- Melbourne
- Australia
| | - Thomas P. Davis
- ARC Centre of Excellence in Convergent Bio-Nano Science & Technology
- Monash Institute of Pharmaceutical Sciences
- Monash University
- Melbourne
- Australia
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19
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The vesicle formation of β-CD and AD self-assembly of dumbbell-shaped amphiphilic triblock copolymer. Colloid Polym Sci 2015. [DOI: 10.1007/s00396-015-3758-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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20
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Bains A, Cao Y, Moffitt MG. Multiscale Control of Hierarchical Structure in Crystalline Block Copolymer Nanoparticles Using Microfluidics. Macromol Rapid Commun 2015; 36:2000-5. [DOI: 10.1002/marc.201500359] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2015] [Revised: 07/17/2015] [Indexed: 01/14/2023]
Affiliation(s)
- Aman Bains
- Department of Chemistry; University of Victoria; P.O. Box 3065 Victoria BC V8W 3V6 Canada
| | - Yimeng Cao
- Department of Chemistry; University of Victoria; P.O. Box 3065 Victoria BC V8W 3V6 Canada
| | - Matthew G. Moffitt
- Department of Chemistry; University of Victoria; P.O. Box 3065 Victoria BC V8W 3V6 Canada
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21
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Pigaleva MA, Bulat MV, Bondarenko GN, Abramchuk SS, Laptinskaya TV, Gallyamov MO, Beletskaya IP, Möller M. Formation of Easy-to-Recover Polystyrene- block-Poly(4-vinylpyridine) Micelles Decorated with Pd Nanoparticles in Solutions of Self-Neutralizing Carbonic Acid. ACS Macro Lett 2015; 4:661-664. [PMID: 35596482 DOI: 10.1021/acsmacrolett.5b00281] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
It was found out that block copolymers of polystyrene and poly(4-vinylpyridine) with comparable lengths of blocks could be dissolved in a high-pressure reactor containing water phase saturated with carbon dioxide under high pressure at room temperature. This rather effective dissolution occurs due to a protonation of P4VP nitrogen-containing groups together with a plasticization of the polymer material to be dissolved by a compressed dense CO2 being contained in the autoclave. The selected block copolymers form rather monodispersed micelles with well-defined and reproducible spherical geometry. They apparently have a hydrophobic polystyrene core and a polycationic poly-4-vinylpyridine corona. The obtained micelles were characterized by various techniques such as DLS, AFM, TEM, and SEM. Further, it was revealed that the corona of such micelles could be decorated with Pd nanoparticles having the diameter around 3 nm.
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Affiliation(s)
| | | | | | - Sergey S. Abramchuk
- Nesmeyanov Institute
of Organoelement Compounds RAS, Moscow, Russian Federation
| | | | - Marat O. Gallyamov
- Nesmeyanov Institute
of Organoelement Compounds RAS, Moscow, Russian Federation
| | | | - Martin Möller
- DWI - Leibniz Institute for Interactive Materials, Aachen, Germany
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22
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Zepon KM, Otsuka I, Bouilhac C, Muniz EC, Soldi V, Borsali R. Glyco-Nanoparticles Made from Self-Assembly of Maltoheptaose-block-Poly(methyl methacrylate): Micelle, Reverse Micelle, and Encapsulation. Biomacromolecules 2015; 16:2012-24. [DOI: 10.1021/acs.biomac.5b00443] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Karine M. Zepon
- University Grenoble
Alpes, CERMAV, F-38000 Grenoble, France
- CNRS, CERMAV, F-38000 Grenoble, Cedex
9, France
- Departamento
de Química, Universidade Federal de Santa Catarina, CEP 88040-900, Florianópolis, Santa Catarina, Brazil
| | - Issei Otsuka
- University Grenoble
Alpes, CERMAV, F-38000 Grenoble, France
- CNRS, CERMAV, F-38000 Grenoble, Cedex
9, France
| | - Cécile Bouilhac
- Institut
Charles Gerhardt Montpellier UMR5253 CNRS-UM-ENSCM, Equipe Ingénierie
et Architectures Macromoléculaires, Université Montpellier, Bâtiment 17−cc1702, Place Eugène Bataillon, 34095 Montpellier, Cedex 5, France
| | - Edvani C. Muniz
- Grupo
de Materiais Poliméricos e Compósitos, GMPC—Departamento
de Química, Universidade Estadual de Maringá, CEP 87020-900, Maringá, Paraná, Brazil
| | - Valdir Soldi
- Departamento
de Química, Universidade Federal de Santa Catarina, CEP 88040-900, Florianópolis, Santa Catarina, Brazil
| | - Redouane Borsali
- University Grenoble
Alpes, CERMAV, F-38000 Grenoble, France
- CNRS, CERMAV, F-38000 Grenoble, Cedex
9, France
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23
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Qiu H, Gao Y, Du VA, Harniman R, Winnik MA, Manners I. Branched Micelles by Living Crystallization-Driven Block Copolymer Self-Assembly under Kinetic Control. J Am Chem Soc 2015; 137:2375-85. [DOI: 10.1021/ja5126808] [Citation(s) in RCA: 90] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Huibin Qiu
- School
of Chemistry, University of Bristol, Bristol BS8 1TS, United Kingdom
| | - Yang Gao
- School
of Chemistry, University of Bristol, Bristol BS8 1TS, United Kingdom
| | - Van An Du
- School
of Chemistry, University of Bristol, Bristol BS8 1TS, United Kingdom
| | - Rob Harniman
- School
of Chemistry, University of Bristol, Bristol BS8 1TS, United Kingdom
| | - Mitchell A. Winnik
- Department
of Chemistry, University of Toronto, Toronto, Ontario M5S 3H6, Canada
| | - Ian Manners
- School
of Chemistry, University of Bristol, Bristol BS8 1TS, United Kingdom
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24
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Sanwaria S, Singh S, Horechyy A, Formanek P, Stamm M, Srivastava R, Nandan B. Multifunctional core–shell polymer–inorganic hybrid nanofibers prepared via block copolymer self-assembly. RSC Adv 2015. [DOI: 10.1039/c5ra17161j] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
A simple approach for fabricating multifunctional core–shell nanofibers via self-assembly of block copolymer has been demonstrated. The approach is versatile and could easily be extended to a range of targeted combination of nanoparticles.
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Affiliation(s)
- Sunita Sanwaria
- Department of Textile Technology
- Indian Institute of Technology Delhi
- New Delhi 110016
- India
| | - Sajan Singh
- Department of Textile Technology
- Indian Institute of Technology Delhi
- New Delhi 110016
- India
| | - Andriy Horechyy
- Leibniz-Institut für Polymerforschung Dresden e.V
- 01069 Dresden
- Germany
| | - Petr Formanek
- Leibniz-Institut für Polymerforschung Dresden e.V
- 01069 Dresden
- Germany
| | - Manfred Stamm
- Leibniz-Institut für Polymerforschung Dresden e.V
- 01069 Dresden
- Germany
- Technische Universität Dresden
- Physical Chemistry of Polymer Materials
| | - Rajiv Srivastava
- Department of Textile Technology
- Indian Institute of Technology Delhi
- New Delhi 110016
- India
| | - Bhanu Nandan
- Department of Textile Technology
- Indian Institute of Technology Delhi
- New Delhi 110016
- India
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25
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Di Mauro AE, Toscanini M, Piovani D, Samperi F, Curri ML, Corricelli M, De Caro L, Siliqi D, Comparelli R, Agostiano A, Destri S, Striccoli M. Segmented poly(styrene-co-vinylpyridine) as multivalent host for CdSe nanocrystal based nanocomposites. Eur Polym J 2014. [DOI: 10.1016/j.eurpolymj.2014.09.010] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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26
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Chen M, Geng Z. Microfluidics-Based Self-Assembly of Amphiphilic Random Copolymer P(St-ran-DM). J DISPER SCI TECHNOL 2014. [DOI: 10.1080/01932691.2014.945124] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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27
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Zhu J, Tan M, Zhang L, Yin Q. Elongation flow-triggered morphology transitions of dendritic polyethylene amphiphilic assemblies: host-guest implications. SOFT MATTER 2014; 10:6506-6513. [PMID: 25046698 DOI: 10.1039/c4sm01012d] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The assemblies and transformations of dendritic polyethylene (DPE)-poly(oligo(ethyleneglycol) methacrylate) (POEGMA) amphiphilic micelles have been demonstrated by cryo-TEM and DLS techniques under elongation flow stimuli. The flow rate-dependence of the dissymmetry ratio suggests the possibility that a combination of shear and elongation could also be responsible for the transitions of DPE-POEGMAs, but it is obvious that the exposure of elongation flow is essential and plays a key role in the assembly and fusion of the DPE-POEGMA micelles. Fluorescence resonance energy transfer (FRET) is used to provide insight into the assembly and fusion of DPE-POEGMA under elongation flow. The FRET results show that a shorter separation distance of DiO-DiI with higher elongation rate can result in higher FRET efficiency. Furthermore, DPE-POEGMAs can display the responsive switching ability of the elongation flow-triggered FRET.
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Affiliation(s)
- Jieqing Zhu
- DSAPM Lab, PCFM Lab, OFCM Institute, School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou 510275, China.
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28
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Menon S, Ongungal RM, Das S. Photoresponsive Glycopolymer Aggregates as Controlled Release Systems. MACROMOL CHEM PHYS 2014. [DOI: 10.1002/macp.201400365] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Sajith Menon
- Photosciences and Photonics Section, Chemical Sciences and Technology Division; National Institute for Interdisciplinary Science and Technology (NIIST), CSIR; Trivandrum 695 019 Kerala India
| | - Rahul M. Ongungal
- Photosciences and Photonics Section, Chemical Sciences and Technology Division; National Institute for Interdisciplinary Science and Technology (NIIST), CSIR; Trivandrum 695 019 Kerala India
- Academy of Scientific and Innovative Research (AcSIR); New Delhi 110001 India
| | - Suresh Das
- Photosciences and Photonics Section, Chemical Sciences and Technology Division; National Institute for Interdisciplinary Science and Technology (NIIST), CSIR; Trivandrum 695 019 Kerala India
- Academy of Scientific and Innovative Research (AcSIR); New Delhi 110001 India
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29
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Encapsulation of inorganic nanoparticles into block copolymer micellar aggregates: Strategies and precise localization of nanoparticles. POLYMER 2014. [DOI: 10.1016/j.polymer.2014.01.027] [Citation(s) in RCA: 86] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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30
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Nie X, Jiang W. Luminous block copolymer–quantum dots hybrids formed by cooperative assembly in a selective solvent. RSC Adv 2014. [DOI: 10.1039/c4ra02175d] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
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31
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Cui J, Xu J, Zhu Y, Jiang W. Shear flow controlled morphological polydispersity of amphiphilic ABA triblock copolymer vesicles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:15704-15710. [PMID: 24289289 DOI: 10.1021/la404186u] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Self-assembled polymeric aggregates are generally polydisperse in morphology due to the existence of many metastable states in the system. This shortcoming becomes a bottleneck for preparing high quality self-assembled polymeric materials. An important concern is the possibility of controlling morphological polydispersity through the modulation of the metastable states. In this study, both simulative and experimental results show that the metastable states can be modulated. As a typical example, the morphological polydispersity of amphiphilic ABA triblock copolymer vesicles have been successfully controlled by shear flow. A higher shear rate results in more uniform and smaller vesicles. However, if the shear rate is extremely high, small spheres and short rods can be observed. These findings not only give a deeper insight into the metastable behavior of self-assembled polymeric aggregates but also provide a new strategy for improving the uniformity of vesicles.
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Affiliation(s)
- Jie Cui
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences , Changchun 130022, P. R. China
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32
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Qiu H, Du VA, Winnik MA, Manners I. Branched Cylindrical Micelles via Crystallization-Driven Self-Assembly. J Am Chem Soc 2013; 135:17739-42. [DOI: 10.1021/ja410176n] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Huibin Qiu
- School
of Chemistry, University of Bristol, Bristol BS8 1TS, United Kingdom
| | - Van An Du
- School
of Chemistry, University of Bristol, Bristol BS8 1TS, United Kingdom
| | - Mitchell A. Winnik
- Department
of Chemistry, University of Toronto, Toronto, Ontario M5S 3H6, Canada
| | - Ian Manners
- School
of Chemistry, University of Bristol, Bristol BS8 1TS, United Kingdom
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33
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Xu J, Han Y, Cui J, Jiang W. Size selective incorporation of gold nanoparticles in diblock copolymer vesicle wall. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:10383-10392. [PMID: 23875535 DOI: 10.1021/la402132x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
A systematic study is conducted to reveal how far the polymeric vesicle wall can embed gold nanoparticles (AuNPs) with different sizes by combining experiments and self-consistent field simulations. Both the experimental and simulative results indicate that the location of AuNPs in vesicle wall or in spherical micelle is heavily size dependent. Whether the AuNPs enter the vesicle wall or not is determined by a ratio of the diameter of AuNPs (D0) to the thickness of the vesicle wall (d(w0)). The 1-dodecanethiol-coated AuNPs (Au(x)R) with D0/d(w0) < 0.3 will stably disperse in the vesicle walls. For polystyrene-coated AuNPs (Au(x)S), a criterion of D0/d(w0) is proposed based on the phase diagram; i.e., the Au(x)S with D0/d(w0) < 0.5 can be located in the vesicle wall. Otherwise, the Au(x)R and the Au(x)S prefer to locate in spherical micelles. Moreover, the contributions of enthalpy and entropy to the total free energy of the system are respectively calculated to reveal the mechanism of the size selective distribution of AuNPs. The results demonstrate that the escape of AuNPs from vesicle walls and their selective distribution in spherical micelles is an entropy-driven process. Our study provides an important guideline for fabricating nanoparticle/block copolymer hybrid vesicles in dilute solution.
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Affiliation(s)
- Jiangping Xu
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
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34
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Wang Y, Chen D. Shear Induced Morphological Transformation of Large Compound Micelles Formed by Glutathione End-capped Poly(4-vinylpyridine). CHINESE J CHEM 2013. [DOI: 10.1002/cjoc.201300230] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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35
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Khullar P, Singh V, Mahal A, Kumar H, Kaur G, Bakshi MS. Block Copolymer Micelles as Nanoreactors for Self-Assembled Morphologies of Gold Nanoparticles. J Phys Chem B 2013; 117:3028-39. [DOI: 10.1021/jp310507m] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Poonam Khullar
- Department of
Chemistry, B.B.K. D.A.V. College for Women, Amritsar 143005, Punjab,
India
| | - Vijender Singh
- Department of
Chemistry, B.B.K. D.A.V. College for Women, Amritsar 143005, Punjab,
India
| | - Aabroo Mahal
- Department of
Chemistry, B.B.K. D.A.V. College for Women, Amritsar 143005, Punjab,
India
- Department of Chemistry, Dr. B. R. Ambedkar National Institute of Technology, Jalandhar-144011, India
| | - Harsh Kumar
- Department of Chemistry, Dr. B. R. Ambedkar National Institute of Technology, Jalandhar-144011, India
| | - Gurinder Kaur
- Nanotechnology Research Laboratory, College of North Atlantic, Labrador City, NL A2 V
2K7 Canada
| | - Mandeep Singh Bakshi
- Department of Chemistry, Wilfrid Laurier University, Science Building, 75 University
Ave. W., Waterloo ON N2L 3C5, Canada
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36
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Wang CW, Sinton D, Moffitt MG. Morphological control via chemical and shear forces in block copolymer self-assembly in the lab-on-chip. ACS NANO 2013; 7:1424-1436. [PMID: 23311400 DOI: 10.1021/nn305197m] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
We investigate the effects of variation in chemical conditions (solvent composition, water content, polymer concentration, and added salt) on the morphologies formed by PS-b-PAA in DMF/dioxane/water mixtures in a two-phase gas-liquid segmented microfluidic reactor. The differences in morphologies between off-chip and on-chip self-assembly and on-chip morphological trends for different chemical conditions are explained by the interplay of top-down shear effects (coalescence and breakup) and bottom-up chemical forces. Using off-chip morphology results, we construct a water content-solvent composition phase diagram showing disordered, sphere, cylinder, and vesicle regions. On-chip morphologies are found to deviate from off-chip morphologies by three identified shear-induced paths: 1) sphere-to-cylinder, and 2) sphere-to-vesicle transitions, both via shear-induced coalescence when initial micelle sizes are small, and 3) cylinder-to-sphere transitions via shear-induced breakup when initial micelle sizes are large (high capillary number conditions). These pathways contribute to the generation of large extended bilayer aggregates uniquely on-chip, at either increased polymer or salt concentrations. Collectively these results demonstrate the broad utility of top-down directed molecular self-assembly in conjunction with chemical forces to control morphology and size of polymer colloids at the nanoscale.
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Affiliation(s)
- Chih-Wei Wang
- Department of Chemistry, University of Victoria, P.O. Box 3065, Victoria, BC V8W 3V6, Canada
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37
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Mao C, Huang J, Zhu Y, Jiang W, Tang Q, Ma X. Tailored Parallel Graphene Stripes in Plastic Film with Conductive Anisotropy by Shear-Induced Self-Assembly. J Phys Chem Lett 2013; 4:43-47. [PMID: 26291209 DOI: 10.1021/jz301811b] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
We present a simple but efficient route to prepare a highly anisotropic conductive plastic thin film from the polypropylene/(styrene-ethylene/butadiene-styrene) triblock copolymer/graphene blend via shear-induced self-assembly. Under the shear-flow induction, GE nanosheets dispersed in the polymer matrix can spontaneously assemble into ordered parallel stripes, which endow the materials significantly conductive anisotropy. The electrical resistivity in the direction parallel to the graphene stripes is almost four orders of magnitude lower than that which is perpendicular to the stripes. This study provides a new method for the precise control of the organization of functional nano-objects in polymer matrix, which can be widely extended to the fabrication of other multifunctional anisotropic materials of interest in various fields.
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Affiliation(s)
- Cui Mao
- †State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
- ‡Graduate School of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Jinrui Huang
- †State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
- ‡Graduate School of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Yutian Zhu
- †State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
| | - Wei Jiang
- †State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
| | - Qingxin Tang
- §Key Laboratory of UV Light Emitting Materials and Technology under Ministry of Education, Northeast Normal University, Changchun 130024, P. R. China
| | - Xiaojing Ma
- †State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
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38
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Nie X, Xu J, Cui J, Yang B, Jiang W. Encapsulation of semiconductor quantum dots into the central cores of block copolymer cylindrical and toroidal micelles. RSC Adv 2013. [DOI: 10.1039/c3ra44403a] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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39
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Wang CW, Bains A, Sinton D, Moffitt MG. Flow-directed assembly of block copolymer vesicles in the lab-on-a-chip. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:15756-15761. [PMID: 23094655 DOI: 10.1021/la303655s] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
We demonstrate a microfluidic approach to the production of block copolymer vesicles via flow-directed self-assembly in a segmented gas-liquid device. Chemical conditions that favor spherical micelles in the bulk are found to yield a nearly pure population of vesicles on a chip-a transformation of two full morphological steps-because of a coalescence mechanism enabled by high shear. The production of polymeric vesicles via top-down control in a microfluidic device enables new processing routes to applications including drug delivery formulations in the lab-on-a-chip.
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Affiliation(s)
- Chih-Wei Wang
- Department of Chemistry, University of Victoria, Victoria, BC, Canada
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40
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41
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Bae J, Lawrence J, Miesch C, Ribbe A, Li W, Emrick T, Zhu J, Hayward RC. Multifunctional nanoparticle-loaded spherical and wormlike micelles formed by interfacial instabilities. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2012; 24:2735-2741. [PMID: 22513788 DOI: 10.1002/adma.201200570] [Citation(s) in RCA: 67] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2012] [Indexed: 05/29/2023]
Abstract
Hybrid spherical and wormlike amphiphilic block copolymer micelles are formed through evaporation-induced interfacial instabilities of emulsion droplets, allowing the incorporation of pre-synthesized hydrophobic inorganic nanoparticles within the micelle cores, as well as co-encapsulation of different nanoparticles. This encapsulation behavior is largely insensitive to particle surface chemistry, shape, and size, thus providing a versatile route to fabricate multifunctional micelles.
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Affiliation(s)
- Jinhye Bae
- Polymer Science and Engineering Department, University of Massachusetts, Amherst, 01003, USA
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42
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Wang F, Cheng L, Chen T, Zhu D, Wen Q, Wang S. Facile Preparation of Polymeric Dimers from Amphiphilic Patchy Particles. Macromol Rapid Commun 2012; 33:933-7. [DOI: 10.1002/marc.201100787] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2011] [Revised: 12/29/2011] [Indexed: 11/11/2022]
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43
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Wang CW, Sinton D, Moffitt MG. Flow-Directed Block Copolymer Micelle Morphologies via Microfluidic Self-Assembly. J Am Chem Soc 2011; 133:18853-64. [DOI: 10.1021/ja2067252] [Citation(s) in RCA: 86] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Chih-Wei Wang
- Department of Chemistry, University of Victoria, P.O. Box 3065, Victoria, BC, Canada V8W 3V6
| | - David Sinton
- Department of Mechanical and Industrial Engineering, University of Toronto, 5 King’s College Road, Toronto, ON, Canada, M5S 3G8
| | - Matthew G. Moffitt
- Department of Chemistry, University of Victoria, P.O. Box 3065, Victoria, BC, Canada V8W 3V6
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44
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Kessel S, Urbani CN, Monteiro MJ. Mechanically driven reorganization of thermoresponsive diblock copolymer assemblies in water. Angew Chem Int Ed Engl 2011; 50:8082-5. [PMID: 21751314 DOI: 10.1002/anie.201102651] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2011] [Revised: 06/20/2011] [Indexed: 11/10/2022]
Abstract
Controlled formation of a variety of 3D structures was observed at high polymer weight fractions in water from a single diblock, consisting of poly(N-isopropylacrylamide), PNIPAM, and polystyrene, PSTY segments. The structures form through a mechanical process driven by swelling of hydrophilic polymer segments upon a change in temperature.
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Affiliation(s)
- Stefanie Kessel
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, Australia
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45
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Kessel S, Urbani CN, Monteiro MJ. Mechanically Driven Reorganization of Thermoresponsive Diblock Copolymer Assemblies in Water. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201102651] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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46
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He F, Gädt T, Manners I, Winnik MA. Fluorescent “Barcode” Multiblock Co-Micelles via the Living Self-Assembly of Di- and Triblock Copolymers with a Crystalline Core-Forming Metalloblock. J Am Chem Soc 2011; 133:9095-103. [DOI: 10.1021/ja202662u] [Citation(s) in RCA: 98] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Feng He
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6, Canada
| | - Torben Gädt
- School of Chemistry, University of Bristol, Bristol BS8 1TS, United Kingdom
| | - Ian Manners
- School of Chemistry, University of Bristol, Bristol BS8 1TS, United Kingdom
| | - Mitchell A. Winnik
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6, Canada
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47
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Yin L, Hillmyer MA. Disklike Micelles in Water from Polyethylene-Containing Diblock Copolymers. Macromolecules 2011. [DOI: 10.1021/ma200242b] [Citation(s) in RCA: 135] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ligeng Yin
- Department of Chemistry, University of Minnesota, 207 Pleasant St. SE, Minneapolis, Minnesota 55455-0431, United States
| | - Marc A. Hillmyer
- Department of Chemistry, University of Minnesota, 207 Pleasant St. SE, Minneapolis, Minnesota 55455-0431, United States
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48
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Liu Y, Wang X. Recent advances in block copolymer-assisted synthesis of supramolecular inorganic/organic hybrid colloids. Polym Chem 2011. [DOI: 10.1039/c1py00283j] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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49
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Zhang M, Rene-Boisneuf L, Hu Y, Moozeh K, Hassan Y, Scholes G, Winnik MA. Preparation and photo/chemical-activation of wormlike network micelles of core–shell quantum dots and block copolymer hybrids. ACTA ACUST UNITED AC 2011. [DOI: 10.1039/c1jm11104c] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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50
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Iatridi Z, Roiter Y, Stavrouli N, Minko S, Tsitsilianis C. Phase behavior and self-assembly of PSn(P2VP-b-PAA)n multiarmed multisegmented star terpolymers with ampholytic arms. Polym Chem 2011. [DOI: 10.1039/c1py00090j] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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