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Li P, Davis JL, Mays JW, Wang X, Kilbey SM. Architecture- and Composition-Controlled Self-Assembly of Block Copolymers and Binary Mixtures With Crosslinkable Components: Chain Exchange Between Block Copolymer Nanoparticles. Front Chem 2022; 10:833307. [PMID: 35281559 PMCID: PMC8906501 DOI: 10.3389/fchem.2022.833307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2021] [Accepted: 01/24/2022] [Indexed: 11/13/2022] Open
Abstract
Chain exchange behaviors in self-assembled block copolymer (BCP) nanoparticles (NPs) at room temperature are investigated through observations of structural differences between parent and binary systems of BCP NPs with and without crosslinked domains. Pairs of linear diblock or triblock, and branched star-like polystyrene-poly(2-vinylpyridine) (PS-PVP) copolymers that self-assemble in a PVP-selective mixed solvent into BCP NPs with definite differences in size and self-assembled morphology are combined by diverse mixing protocols and at different crosslinking densities to reveal the impact of chain exchange between BCP NPs. Clear structural evolution is observed by dynamic light scattering and AFM and TEM imaging, especially in a blend of triblock + star copolymer BCP NPs. The changes are ascribed to the chain motion inherent in the dynamic equilibrium, which drives the system to a new structure, even at room temperature. Chemical crosslinking of PVP corona blocks suppresses chain exchange between the BCP NPs and freezes the nanostructures at a copolymer crosslinking density (CLD) of ∼9%. This investigation of chain exchange behaviors in BCP NPs having architectural and compositional complexity and the ability to moderate chain motion through tailoring the CLD is expected to be valuable for understanding the dynamic nature of BCP self-assemblies and diversifying the self-assembled structures adopted by these systems. These efforts may guide the rational construction of novel polymer NPs for potential use, for example, as drug delivery platforms and nanoreactors.
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Affiliation(s)
- Panpan Li
- Shenzhen Research Institute of Shandong University, Shenzhen, China
- National Engineering Research Center for Colloidal Materials, School of Chemistry and Chemical Engineering, Shandong University, Jinan, China
| | - Jesse L. Davis
- Department of Chemistry, University of Tennessee, Knoxville, TN, United States
| | - Jimmy W. Mays
- Department of Chemistry, University of Tennessee, Knoxville, TN, United States
| | - Xu Wang
- Shenzhen Research Institute of Shandong University, Shenzhen, China
- National Engineering Research Center for Colloidal Materials, School of Chemistry and Chemical Engineering, Shandong University, Jinan, China
| | - S. Michael Kilbey
- Department of Chemistry, University of Tennessee, Knoxville, TN, United States
- Department of Chemical and Biomolecular Engineering, University of Tennessee, Knoxville, TN, United States
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2
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Wu H, Ting JM, Yu B, Jackson NE, Meng S, de Pablo JJ, Tirrell MV. Spatiotemporal Formation and Growth Kinetics of Polyelectrolyte Complex Micelles with Millisecond Resolution. ACS Macro Lett 2020; 9:1674-1680. [PMID: 35617069 DOI: 10.1021/acsmacrolett.0c00543] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
We have directly observed the in situ self-assembly kinetics of polyelectrolyte complex (PEC) micelles by synchrotron time-resolved small-angle X-ray scattering, equipped with a stopped-flow device that provides millisecond temporal resolution. A synthesized neutral-charged diblock polycation and homopolyanion that we have previously investigated as a model charge-matched, core-shell micelle system were selected for this work. The initial micellization of the oppositely charged polyelectrolytes was completed within the dead time of mixing of 100 ms, followed by micelle growth and equilibration up to several seconds. By combining the structural evolution of the radius of gyration (Rg) with complementary molecular dynamics simulations, we show how the self-assemblies evolve incrementally in size over time through a two-step kinetic process: first, oppositely charged polyelectrolyte chains pair to form nascent aggregates that immediately assemble into spherical micelles, and second, these PEC micelles grow into larger micellar entities. This work has determined one possible kinetic pathway for the initial formation of PEC micelles, which provides useful physical insights for increasing fundamental understanding self-assembly dynamics, driven by polyelectrolyte complexation that occurs on ultrafast time scales.
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Affiliation(s)
- Hao Wu
- Pritzker School of Molecular Engineering, University of Chicago, Chicago, Illinois 60637, United States
| | - Jeffrey M. Ting
- Pritzker School of Molecular Engineering, University of Chicago, Chicago, Illinois 60637, United States
- Center for Molecular Engineering and Materials Science Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Boyuan Yu
- Pritzker School of Molecular Engineering, University of Chicago, Chicago, Illinois 60637, United States
| | - Nicholas E. Jackson
- Pritzker School of Molecular Engineering, University of Chicago, Chicago, Illinois 60637, United States
- Center for Molecular Engineering and Materials Science Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Siqi Meng
- Pritzker School of Molecular Engineering, University of Chicago, Chicago, Illinois 60637, United States
| | - Juan J. de Pablo
- Pritzker School of Molecular Engineering, University of Chicago, Chicago, Illinois 60637, United States
- Center for Molecular Engineering and Materials Science Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Matthew V. Tirrell
- Pritzker School of Molecular Engineering, University of Chicago, Chicago, Illinois 60637, United States
- Center for Molecular Engineering and Materials Science Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
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3
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Swan S, Egemole FO, Nguyen ST, Kim JH. Assembly of Short-Chain Amphiphilic Homopolymers into Well-Defined Particles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:4548-4555. [PMID: 32248691 DOI: 10.1021/acs.langmuir.0c00073] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Linear homopolymers of norbornene (NBE) derivatives equipped with short-chain alcohol pendant groups were prepared by ring-opening metathesis polymerization (ROMP) and subsequently assembled into well-defined structures in alcohol solvents. The ratios of hydrophobic carbons and hydrophilic alcohol groups at the repeating monomeric unit in these short-chain amphiphilic polymers were found to play an important role in determining the size and distribution of the final globular structures. Unlike the assembly of other linear homo- and copolymers possessing long-chain amphiphilicity, NBE-based linear polymers were readily transformed into spherical particles with a layered conformation, whose sizes range from a few hundred nanometers to micrometers with narrow distributions, simply by controlling the concentration and molecular weights of the linear homopolymers without using any surfactants. In addition, the degree of the intermolecular forces with solvents (e.g., solvation) possessing different surface tensions and polarities highly affected the final diameter and distribution of the polymer particles, implying the importance of the selection of a proper solvent to regulate their structural features. As such, understanding the assembly of these types of short-chain homopolymers into uniform particles can allow for regulating the transformation of diverse linear amphiphilic polymers into precisely controlled structures for various applications.
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Affiliation(s)
- Stephanie Swan
- Department of Chemistry, Illinois State University, Normal, Illinois 61790-4160, United States
| | - Franklin O Egemole
- Department of Chemistry, Illinois State University, Normal, Illinois 61790-4160, United States
| | - SonBinh T Nguyen
- Department of Chemistry and the International Institute for Nanotechnology, Northwestern University, Evanston, Illinois 60208, United States
| | - Jun-Hyun Kim
- Department of Chemistry, Illinois State University, Normal, Illinois 61790-4160, United States
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4
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Wu H, Ting JM, Tirrell MV. Mechanism of Dissociation Kinetics in Polyelectrolyte Complex Micelles. Macromolecules 2020. [DOI: 10.1021/acs.macromol.9b01814] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Hao Wu
- Pritzker School of Molecular Engineering, The University of Chicago, Chicago, Illinois 60637, United States
| | - Jeffrey M. Ting
- Pritzker School of Molecular Engineering, The University of Chicago, Chicago, Illinois 60637, United States
- Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Matthew V. Tirrell
- Pritzker School of Molecular Engineering, The University of Chicago, Chicago, Illinois 60637, United States
- Argonne National Laboratory, Lemont, Illinois 60439, United States
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5
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Jones BH, Bachand GD, Shin SHR, Firestone MA, Paxton WF. Dynamic Control over Aqueous Poly(butadiene-b-ethylene oxide) Self-Assembly through Olefin Metathesis. Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b01417] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
| | | | | | - Millicent A. Firestone
- Center for Integrated Nanotechnologies, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
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6
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Liou JY, Sun YS. Lateral Order and Self-Organized Morphology of Diblock Copolymer Micellar Films. Polymers (Basel) 2018; 10:E597. [PMID: 30966631 PMCID: PMC6404033 DOI: 10.3390/polym10060597] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Revised: 05/22/2018] [Accepted: 05/24/2018] [Indexed: 11/16/2022] Open
Abstract
We report the lateral order and self-organized morphology of diblock copolymer polystyrene-block-poly(2-vinylpyridine), P(S-b-2VP), and micelles on silicon substrates (SiOx/Si). These micellar films were prepared by spin coating from polymer solutions of varied concentration of polymer in toluene onto SiOx/Si, and were investigated with grazing-incidence small-angle X-ray scattering (GISAXS) and an atomic force microscope (AFM). With progressively increased surface coverage with increasing concentration, loosely packed spherical micelles, ribbon-like nanostructures, and a second layer of spherical micelles were obtained sequentially. Quantitative analysis and simulations of the micellar packing demonstrates that the spatial ordering of the loosely packed spherical micelles altered from short-range order to hexagonal order when the micellar coverage increased from small to moderate densities of the covered surface. At large densities, anisotropic fusion between spherical micelles caused the ribbon-like nanostructures to have a short-range spatial order; the ordering quality of the second layer was governed by the rugged surface of the underlying layer because the valleys between the ribbon-like nanostructures allowed for further deposition of spherical micelles.
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Affiliation(s)
- Jiun-You Liou
- Department of Chemical and Materials Engineering, National Central University, Taoyuan 32001, Taiwan.
| | - Ya-Sen Sun
- Department of Chemical and Materials Engineering, National Central University, Taoyuan 32001, Taiwan.
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7
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Zhang C, Zhou H, Li Y, Zhang Y, Yu C, Li H, Chen Y, Hamley IW, Jiang S. Investigations on the micellization of amphiphilic dendritic copolymers: From unimers to micelles. J Colloid Interface Sci 2018; 514:609-614. [PMID: 29306191 DOI: 10.1016/j.jcis.2017.12.070] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2017] [Revised: 12/22/2017] [Accepted: 12/26/2017] [Indexed: 12/17/2022]
Abstract
Since the micellization kinetics is influenced by polymer structure, the spherical three-dimensional topology of amphiphilic dendritic copolymers (ADPs) which hinders the phase separation during micellization is assumed to make the micellization kinetics different. In the literatures, most of the attention has been paid to the morphology transition or the morphology at equilibrium and the micellization kinetics of ADPs is rarely reported. In this study, the micellization processes of amphiphilic dendritic copolymers from unimers to the final equilibrium micelles were monitored by laser light scattering. Based on the closed association mechanism, the thermodynamics of micellization was analysed. The negative thermodynamic quantities indicate that the micellization of ADPs is driven by enthalpy. Based on the change of scattering intensity and hydrodynamic radius (Rh) with time, the detailed micellization kinetics was analysed, which contains two steps. By controlling the temperature and type of solvent, a system in which the concentration has little influence on Rh is obtained. The relaxation times of the two steps decrease with concentration, indicating that at higher concentration the rate of micellization is quicker. With the increasing mass fraction of the hydrophobic part, the relaxation times decrease and the driving force of micellization increases.
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Affiliation(s)
- Cuiyun Zhang
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, PR China; School of Materials Science and Engineering, Tianjin University, Tianjin 300072, PR China; Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Huipeng Zhou
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, PR China
| | - Yongxin Li
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, PR China
| | - Yunyi Zhang
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, PR China; School of Materials Science and Engineering, Tianjin University, Tianjin 300072, PR China
| | - Cong Yu
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, PR China; University of Chinese Academy of Science, Beijing 100049, PR China.
| | - Hongfei Li
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, PR China; University of Chinese Academy of Science, Beijing 100049, PR China.
| | - Yu Chen
- Department of Chemistry, School of Sciences, Tianjin University, Tianjin 300072, PR China.
| | - Ian W Hamley
- School of Chemistry, Pharmacy and Food Biosciences, University of Reading, Whiteknights, Reading RG6 6AD, United Kingdom.
| | - Shichun Jiang
- School of Materials Science and Engineering, Tianjin University, Tianjin 300072, PR China.
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8
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Zhao D, Ma Y, Lodge TP. Exchange Kinetics for a Single Block Copolymer in Micelles of Two Different Sizes. Macromolecules 2018. [DOI: 10.1021/acs.macromol.7b02550] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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9
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Ma Y, Lodge TP. Chain Exchange Kinetics in Diblock Copolymer Micelles in Ionic Liquids: The Role of χ. Macromolecules 2016. [DOI: 10.1021/acs.macromol.6b02212] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Yuanchi Ma
- Department
of Chemistry and ‡Department of Chemical Engineering and Materials
Science, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Timothy P. Lodge
- Department
of Chemistry and ‡Department of Chemical Engineering and Materials
Science, University of Minnesota, Minneapolis, Minnesota 55455, United States
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10
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Kelley EG, Murphy RP, Seppala JE, Smart TP, Hann SD, Sullivan MO, Epps TH. Size evolution of highly amphiphilic macromolecular solution assemblies via a distinct bimodal pathway. Nat Commun 2014; 5:3599. [PMID: 24710204 PMCID: PMC4225159 DOI: 10.1038/ncomms4599] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2013] [Accepted: 03/10/2014] [Indexed: 11/26/2022] Open
Abstract
The solution self-assembly of macromolecular amphiphiles offers an efficient, bottom-up strategy for producing well-defined nanocarriers, with applications ranging from drug delivery to nanoreactors. Typically, the generation of uniform nanocarrier architectures is controlled by processing methods that rely on cosolvent mixtures. These preparation strategies hinge on the assumption that macromolecular solution nanostructures are kinetically stable following transfer from an organic/aqueous cosolvent into aqueous solution. Herein we demonstrate that unequivocal step-change shifts in micelle populations occur over several weeks following transfer into a highly selective solvent. The unexpected micelle growth evolves through a distinct bimodal distribution separated by multiple fusion events and critically depends on solution agitation. Notably, these results underscore fundamental similarities between assembly processes in amphiphilic polymer, small molecule and protein systems. Moreover, the non-equilibrium micelle size increase can have a major impact on the assumed stability of solution assemblies, for which performance is dictated by nanocarrier size and structure.
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Affiliation(s)
| | | | - Jonathan E. Seppala
- Department of Chemical and Biomolecular Engineering, University of Delaware, 150 Academy Street, Newark, Delaware, 19716, United States
| | - Thomas P. Smart
- Department of Chemical and Biomolecular Engineering, University of Delaware, 150 Academy Street, Newark, Delaware, 19716, United States
| | - Sarah D. Hann
- Department of Chemical and Biomolecular Engineering, University of Delaware, 150 Academy Street, Newark, Delaware, 19716, United States
| | - Millicent O. Sullivan
- Department of Chemical and Biomolecular Engineering, University of Delaware, 150 Academy Street, Newark, Delaware, 19716, United States
| | - Thomas H. Epps
- Department of Chemical and Biomolecular Engineering, University of Delaware, 150 Academy Street, Newark, Delaware, 19716, United States
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11
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Zhang J, Chen S, Zhu Z, Liu S. Stopped-flow kinetic studies of the formation and disintegration of polyion complex micelles in aqueous solution. Phys Chem Chem Phys 2014; 16:117-27. [DOI: 10.1039/c3cp53608d] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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12
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Gong J, Zhang A, Bai H, Zhang Q, Du C, Li L, Hong Y, Li J. Formation of nanoscale networks: selectively swelling amphiphilic block copolymers with CO2-expanded liquids. NANOSCALE 2013; 5:1195-1204. [PMID: 23299578 DOI: 10.1039/c2nr33188h] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Polymeric films with nanoscale networks were prepared by selectively swelling an amphiphilic diblock copolymer, polystyrene-block-poly(4-vinylpyridine) (PS-b-P4VP), with the CO(2)-expanded liquid (CXL), CO(2)-methanol. The phase behavior of the CO(2)-methanol system was investigated by both theoretical calculation and experiments, revealing that methanol can be expanded by CO(2), forming homogeneous CXL under the experimental conditions. When treated with the CO(2)-methanol system, the spin cast compact PS-b-P4VP film was transformed into a network with interconnected pores, in a pressure range of 12-20 MPa and a temperature range of 45-60 °C. The formation mechanism of the network, involving plasticization of PS and selective swelling of P4VP, was proposed. Because the diblock copolymer diffusion process is controlled by the activated hopping of individual block copolymer chains with the thermodynamic barrier for moving PVP segments from one to another, the formation of the network structures is achieved in a short time scale and shows "thermodynamically restricted" character. Furthermore, the resulting polymer networks were employed as templates, for the preparation of polypyrrole networks, by an electrochemical polymerization process. The prepared porous polypyrrole film was used to fabricate a chemoresistor-type gas sensor which showed high sensitivity towards ammonia.
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Affiliation(s)
- Jianliang Gong
- College of Materials, Xiamen University, Xiamen, 361005, PR China
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13
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Lund R, Willner L, Richter D. Kinetics of Block Copolymer Micelles Studied by Small-Angle Scattering Methods. CONTROLLED POLYMERIZATION AND POLYMERIC STRUCTURES 2013. [DOI: 10.1007/12_2012_204] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
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14
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Synthesis and properties of cross-linkable block copolymer end-capped with 2, 2, 3, 4, 4, 4-hexafluorobutyl methacrylate. JOURNAL OF POLYMER RESEARCH 2011. [DOI: 10.1007/s10965-011-9768-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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15
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Chang CY, Lee YC, Wu PJ, Liou JY, Sun YS, Ko BT. Micellar transitions in solvent-annealed thin films of an amphiphilic block copolymer controlled with tunable surface fields. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:14545-14553. [PMID: 21942623 DOI: 10.1021/la203114j] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
We investigated the response of symmetric poly(styrene-block-4vinylpyridine) P(S-b-4VP) diblock copolymer micelles to surface fields of variable strength at free surfaces and substrate interfaces when the micelles as spun were subjected to solvent annealing. Free surface interactions were controlled with solvent annealing in solvents of varied selectivity. On exposure to vapors of a solvent strongly selective for PS, the micelles retained their spherical shape but grew into cylindrical micelles or lamellar nanostructures via fusion on exposure to slightly selective or neutral solvent vapors. Giant 2D disks that completely wetted PS-grafted substrates resulted when spherical micelles were exposed to vapors of a highly selective solvent for P4VP. The interfacial interactions were controlled through subjecting them to UV/ozone (UVO) substrates initially coated with an end-grafted layer of short PS chains, with which the grafted PS chains became oxidized, degraded, or totally removed through UVO treatment for a controlled duration. When thin films were annealed in vapors of THF, the structural transition from spherical to cylindrical micelles depended on the interfacial field. On applying selective UVO exposure of optimal duration, we fabricated a substrate with two interfacial chemistries that promoted varied micellar species (spherical and cylindrical micelles) with a sharp boundary developed within thin films through solvent annealing for a controlled duration.
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Affiliation(s)
- Chih-Yao Chang
- Department of Chemical and Materials Engineering, National Central University, Taoyuan 32001, Taiwan
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16
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Bharatiya B, Yusa SI, Aswal V, Abezgauz L, Danino D, Bahadur P. Synthesis and Characterization of pH Sensitive Core–Shell–Corona Micelles of Poly(styrene-block-2-vinylpyridine-block-ethylene oxide) ABC Triblock Copolymer in Aqueous Solutions. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2011. [DOI: 10.1246/bcsj.20110184] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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17
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Lee SH, Mok H, Lee Y, Park TG. Self-assembled siRNA–PLGA conjugate micelles for gene silencing. J Control Release 2011; 152:152-8. [DOI: 10.1016/j.jconrel.2010.12.007] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2010] [Revised: 12/09/2010] [Accepted: 12/17/2010] [Indexed: 12/14/2022]
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18
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Choi SH, Bates FS, Lodge TP. Molecular Exchange in Ordered Diblock Copolymer Micelles. Macromolecules 2011. [DOI: 10.1021/ma102788v] [Citation(s) in RCA: 85] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Soo-Hyung Choi
- Department of Chemical Engineering and Materials Science and ‡Department of Chemistry, University of Minnesota Minneapolis, Minnesota 55455, United States
| | - Frank S. Bates
- Department of Chemical Engineering and Materials Science and ‡Department of Chemistry, University of Minnesota Minneapolis, Minnesota 55455, United States
| | - Timothy P. Lodge
- Department of Chemical Engineering and Materials Science and ‡Department of Chemistry, University of Minnesota Minneapolis, Minnesota 55455, United States
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19
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Bader RA, Silvers AL, Zhang N. Polysialic Acid-Based Micelles for Encapsulation of Hydrophobic Drugs. Biomacromolecules 2011; 12:314-20. [DOI: 10.1021/bm1008603] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Rebecca A. Bader
- Syracuse Biomaterials Institute, Syracuse University, 318 Bowne Hall, Syracuse, NY 13244, United States and Department of Biomedical and Chemical Engineering, Syracuse University, 121 Link Hall, Syracuse, New York 13244, United States
| | - Angela L. Silvers
- Syracuse Biomaterials Institute, Syracuse University, 318 Bowne Hall, Syracuse, NY 13244, United States and Department of Biomedical and Chemical Engineering, Syracuse University, 121 Link Hall, Syracuse, New York 13244, United States
| | - Nan Zhang
- Syracuse Biomaterials Institute, Syracuse University, 318 Bowne Hall, Syracuse, NY 13244, United States and Department of Biomedical and Chemical Engineering, Syracuse University, 121 Link Hall, Syracuse, New York 13244, United States
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20
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Zhang J, Liu S. Kinetics of thermo-induced micelle-to-vesicle transitions in a catanionic surfactant system investigated by stopped-flow temperature jump. Phys Chem Chem Phys 2011; 13:12545-53. [DOI: 10.1039/c0cp02856h] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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21
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Effects of ageing conditions and block copolymer concentration on the stability and micellization of P123-Ti4+ sols prepared by the templating method. RESEARCH ON CHEMICAL INTERMEDIATES 2010. [DOI: 10.1007/s11164-010-0204-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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22
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A competitive aggregation model for Flash NanoPrecipitation. J Colloid Interface Sci 2010; 351:330-42. [DOI: 10.1016/j.jcis.2010.07.066] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2010] [Revised: 07/14/2010] [Accepted: 07/27/2010] [Indexed: 11/22/2022]
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23
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Zhong S, Pochan DJ. Cryogenic Transmission Electron Microscopy for Direct Observation of Polymer and Small-Molecule Materials and Structures in Solution. POLYM REV 2010. [DOI: 10.1080/15583724.2010.493254] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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24
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Kim TH, Huh J, Hwang J, Kim HC, Kim SH, Sohn BH, Park C. Ordered Arrays of PS-b-P4VP Micelles by Fusion and Fission Process upon Solvent Annealing. Macromolecules 2009. [DOI: 10.1021/ma900889d] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Tae Hee Kim
- Department of Materials Science and Engineering, Yonsei University, Seoul 120-749, Korea
| | - June Huh
- Department of Materials Science and Engineering, Yonsei University, Seoul 120-749, Korea
| | - Jiyoung Hwang
- Department of Materials Science and Engineering, Yonsei University, Seoul 120-749, Korea
| | - Ho-Cheol Kim
- IBM Research Division, Almaden Research Center, 650 Harry Road, San Jose, California 95120
| | - Seung Hyun Kim
- Division of Nano-Systems Engineering, Inha University, Incheon 402-751, Korea
| | - Beong-Hyeok Sohn
- Department of Chemistry, Seoul National University, Seoul, Korea
| | - Cheolmin Park
- Department of Materials Science and Engineering, Yonsei University, Seoul 120-749, Korea
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Cononsolvency-induced micellization kinetics of pyrene end-labeled diblock copolymer of N-isopropylacrylamide and oligo(ethylene glycol) methyl ether methacrylate studied by stopped-flow light-scattering and fluorescence. J Colloid Interface Sci 2008; 328:196-202. [DOI: 10.1016/j.jcis.2008.09.001] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2008] [Revised: 08/25/2008] [Accepted: 09/01/2008] [Indexed: 11/18/2022]
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26
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Zhang J, Xu J, Liu S. Chain-Length Dependence of Diblock Copolymer Micellization Kinetics Studied by Stopped-Flow pH-Jump. J Phys Chem B 2008; 112:11284-91. [DOI: 10.1021/jp803700n] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Jingyan Zhang
- Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, Anhui 230026, China, and School of Materials and Chemical Engineering, Anhui University of Architecture, Hefei, Anhui 230022, China
| | - Jian Xu
- Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, Anhui 230026, China, and School of Materials and Chemical Engineering, Anhui University of Architecture, Hefei, Anhui 230022, China
| | - Shiyong Liu
- Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, Anhui 230026, China, and School of Materials and Chemical Engineering, Anhui University of Architecture, Hefei, Anhui 230022, China
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27
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Cui H, Hodgdon TK, Kaler EW, Abezgauz L, Danino D, Lubovsky M, Talmon Y, Pochan DJ. Elucidating the assembled structure of amphiphiles in solution via cryogenic transmission electron microscopy. SOFT MATTER 2007; 3:945-955. [PMID: 32900043 DOI: 10.1039/b704194b] [Citation(s) in RCA: 142] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
For the past twenty years, significant progress has been made in both developing cryogenic transmission electron microscopy (cryo-TEM) technology and understanding assembled behavior of amphiphilic molecules. Cryo-TEM can provide high-resolution images of complex fluids in a near state. Samples embedded in a thin layer of vitrified solvent do not exhibit artifacts that would normally occur when using chemical fixation or staining-and-drying techniques. Cryo-TEM has been useful in imaging biological molecules in aqueous solutions. Cryo-TEM has become a powerful tool in the study of -assembled structures of amphiphiles in solution as a complementary tool to small-angle X-ray and neutron scattering, light scattering, rheology measurements, and nuclear magnetic resonance. The application of cryo-TEM in the study of assembled behavior of amphiphilic block copolymers, hydrogels, and other complex soft systems continues to emerge. In this context, the usage of cryo-TEM in the field of amphiphilic complex fluids and self-assembled nano-materials is briefly reviewed, and its unique role in exploring the nature of assembled structure in liquid suspension is highlighted.
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Affiliation(s)
- Honggang Cui
- Department of Materials Science and Engineering and Delaware Biotechnology Institute, University of Delaware, Newark, DE 19716.
| | - Travis K Hodgdon
- Center for Molecular Engineering and Thermodynamics, Department of Chemical Engineering, University of Delaware, Newark, DE 19716
| | - Eric W Kaler
- Center for Molecular Engineering and Thermodynamics, Department of Chemical Engineering, University of Delaware, Newark, DE 19716
| | - Ludmila Abezgauz
- Department of Biotechnology and Food Engineering, Technion-Israel Institute of Technology, Haifa 32000, Israel
| | - Dganit Danino
- Department of Biotechnology and Food Engineering, Technion-Israel Institute of Technology, Haifa 32000, Israel
| | - Maya Lubovsky
- Department of Chemical Engineering, Technion-Israel Institute of Technology, Haifa 32000, Israel
| | - Yeshayahu Talmon
- Department of Chemical Engineering, Technion-Israel Institute of Technology, Haifa 32000, Israel
| | - Darrin J Pochan
- Department of Materials Science and Engineering and Delaware Biotechnology Institute, University of Delaware, Newark, DE 19716.
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28
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Jiang X, Luo S, Armes SP, Shi W, Liu S. UV Irradiation-Induced Shell Cross-Linked Micelles with pH-Responsive Cores Using ABC Triblock Copolymers. Macromolecules 2006. [DOI: 10.1021/ma061386m] [Citation(s) in RCA: 103] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Xiaoze Jiang
- Department of Polymer Science and Engineering, and Hefei National Laboratory for Physical Sciences at Microscale, University of Science and Technology of China, Hefei, 230026, Anhui Province, P. R. China, and Department of Chemistry, University of Sheffield, Brook Hill, Sheffield, South Yorkshire, S3 7HF, U.K
| | - Shizhong Luo
- Department of Polymer Science and Engineering, and Hefei National Laboratory for Physical Sciences at Microscale, University of Science and Technology of China, Hefei, 230026, Anhui Province, P. R. China, and Department of Chemistry, University of Sheffield, Brook Hill, Sheffield, South Yorkshire, S3 7HF, U.K
| | - Steven P. Armes
- Department of Polymer Science and Engineering, and Hefei National Laboratory for Physical Sciences at Microscale, University of Science and Technology of China, Hefei, 230026, Anhui Province, P. R. China, and Department of Chemistry, University of Sheffield, Brook Hill, Sheffield, South Yorkshire, S3 7HF, U.K
| | - Wenfang Shi
- Department of Polymer Science and Engineering, and Hefei National Laboratory for Physical Sciences at Microscale, University of Science and Technology of China, Hefei, 230026, Anhui Province, P. R. China, and Department of Chemistry, University of Sheffield, Brook Hill, Sheffield, South Yorkshire, S3 7HF, U.K
| | - Shiyong Liu
- Department of Polymer Science and Engineering, and Hefei National Laboratory for Physical Sciences at Microscale, University of Science and Technology of China, Hefei, 230026, Anhui Province, P. R. China, and Department of Chemistry, University of Sheffield, Brook Hill, Sheffield, South Yorkshire, S3 7HF, U.K
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29
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Zhu Y, Yu Li RK, Jiang W. A Monte Carlo simulation for the micellization of ABC 3-miktoarm star terpolymers in a selective solvent. Chem Phys 2006. [DOI: 10.1016/j.chemphys.2006.03.035] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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30
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Li Z, Hillmyer MA, Lodge TP. Control of Structure in Multicompartment Micelles by Blending μ-ABC Star Terpolymers with AB Diblock Copolymers. Macromolecules 2005. [DOI: 10.1021/ma052199b] [Citation(s) in RCA: 169] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Zhibo Li
- Department of Chemistry and Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, Minnesota 55455
| | - Marc A. Hillmyer
- Department of Chemistry and Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, Minnesota 55455
| | - Timothy P. Lodge
- Department of Chemistry and Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, Minnesota 55455
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31
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Zhu Z, Armes SP, Liu S. pH-Induced Micellization Kinetics of ABC Triblock Copolymers Measured by Stopped-Flow Light Scattering. Macromolecules 2005. [DOI: 10.1021/ma051808c] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Zhiyuan Zhu
- Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, 230026, Anhui Province, P. R. China; Department of Chemistry, University of Sheffield, Brook Hill, Sheffield, South Yorkshire, S37HF United Kingdom; and The Hefei National Laboratory for Physical Sciences at Microscale, Hefei, Anhui, P. R. China
| | - Steven P. Armes
- Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, 230026, Anhui Province, P. R. China; Department of Chemistry, University of Sheffield, Brook Hill, Sheffield, South Yorkshire, S37HF United Kingdom; and The Hefei National Laboratory for Physical Sciences at Microscale, Hefei, Anhui, P. R. China
| | - Shiyong Liu
- Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, 230026, Anhui Province, P. R. China; Department of Chemistry, University of Sheffield, Brook Hill, Sheffield, South Yorkshire, S37HF United Kingdom; and The Hefei National Laboratory for Physical Sciences at Microscale, Hefei, Anhui, P. R. China
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32
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Gao L, Shi L, An Y, Zhang W, Shen X, Guo S, He B. Formation of spindlelike aggregates and flowerlike arrays of polystyrene-b-poly(acrylic acid) micelles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2004; 20:4787-90. [PMID: 15984229 DOI: 10.1021/la0358116] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
In this letter we describe a simple physical method for the ordered aggregation of scattered single spherical polystyrene-b-poly(acrylic acid) (PS-b-PAA) micelles. First, narrow dispersed spindlelike aggregates, about 60 nm in diameter and 1.5 microm in length, are obtained from the aggregation of single spherical PS-b-PAA micelles at 0 degrees C on a glass slide. Then, the yielding spindlelike units can further aggregate into long-ranged, close-packed, flowerlike arrays after a given amount of freeze-thaw cycles. The formation of the interesting arrays is ascribed to the templated aggregation of micelles on the water polycrystal at the freezing point.
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33
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Carrillo A, Kane RS. Block copolymer nanoparticles of controlled sizes via ring-opening metathesis polymerization. ACTA ACUST UNITED AC 2004. [DOI: 10.1002/pola.20130] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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34
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Johnson BK, Prud'homme RK. Mechanism for rapid self-assembly of block copolymer nanoparticles. PHYSICAL REVIEW LETTERS 2003; 91:118302. [PMID: 14525460 DOI: 10.1103/physrevlett.91.118302] [Citation(s) in RCA: 276] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2002] [Indexed: 05/20/2023]
Abstract
Amphiphilic block copolymers in solution spontaneously self-assemble when the solvent quality for one block is selectively decreased. We demonstrate that, for supersaturation ratio changes [d(S)/dt] over 10(5) per second from equilibrium, nanoparticles are obtained with a formation mechanism and size dependent on the jumping rate and magnitude. The threshold rate for homogeneous precipitation is determined by the induction time of a particle, equivalent to the diffusion limited fusion of copolymer chains to form a corona of overlapping soluble brushes. Via determination of the induction time with a novel confined impinging jets mixer and use of a scaling relation, the interfacial free energy of a block copolymer nanoparticle was measured for the first time.
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Affiliation(s)
- Brian K Johnson
- Princeton University, Department of Chemical Engineering, Princeton, New Jersey 08544, USA
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35
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Riegel IC, Samios D, Petzhold CL, Eisenberg A. Self-assembly of amphiphilic di and triblock copolymers of styrene and quaternized 5-(N,N-diethylamino) isoprene in selective solvents. POLYMER 2003. [DOI: 10.1016/s0032-3861(03)00013-2] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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36
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Self-assemblies of block copolymer of 2-perfluorooctylethyl methacrylate and methyl methacrylate. Colloids Surf A Physicochem Eng Asp 2000. [DOI: 10.1016/s0927-7757(99)00484-7] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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37
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Dormidontova EE. Micellization Kinetics in Block Copolymer Solutions: Scaling Model. Macromolecules 1999. [DOI: 10.1021/ma9809029] [Citation(s) in RCA: 147] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Elena E. Dormidontova
- Department of Polymer Chemistry and Material Science Centre, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
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38
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Kositza MJ, Bohne C, Alexandridis P, Hatton TA, Holzwarth JF. Dynamics of Micro- and Macrophase Separation of Amphiphilic Block-Copolymers in Aqueous Solution. Macromolecules 1999. [DOI: 10.1021/ma9904316] [Citation(s) in RCA: 101] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Matthias J. Kositza
- Abteilung Physikalische Chemie, Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin-Dahlem, Germany; Department of Chemical Engineering, State University of New York at Buffalo, Buffalo, New York 14260-4200; and Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139
| | - Cornelia Bohne
- Abteilung Physikalische Chemie, Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin-Dahlem, Germany; Department of Chemical Engineering, State University of New York at Buffalo, Buffalo, New York 14260-4200; and Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139
| | - Paschalis Alexandridis
- Abteilung Physikalische Chemie, Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin-Dahlem, Germany; Department of Chemical Engineering, State University of New York at Buffalo, Buffalo, New York 14260-4200; and Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139
| | - T. Alan Hatton
- Abteilung Physikalische Chemie, Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin-Dahlem, Germany; Department of Chemical Engineering, State University of New York at Buffalo, Buffalo, New York 14260-4200; and Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139
| | - Josef F. Holzwarth
- Abteilung Physikalische Chemie, Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin-Dahlem, Germany; Department of Chemical Engineering, State University of New York at Buffalo, Buffalo, New York 14260-4200; and Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139
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39
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40
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Farinha JPS, Schillén K, Winnik MA. Interfaces in Self-Assembling Diblock Copolymer Systems: Characterization of Poly(isoprene-b-methyl methacrylate) Micelles in Acetonitrile. J Phys Chem B 1999. [DOI: 10.1021/jp9843858] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- J. P. S. Farinha
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario, Canada M5S 3H6
| | - Karin Schillén
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario, Canada M5S 3H6
| | - M. A. Winnik
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario, Canada M5S 3H6
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41
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Abstract
The evolution of polymolecular micelles formed by two different poly(2-vinylpyridine)-polystyrene (PVP-PS) block copolymers dissolved in toluene is studied by means of transmission electron microscopy (TEM). The two PVP-PS diblock copolymers differ in composition, namely in the length of PVP block. Upon dissolution, a rapid formation of mixed polymolecular micelles takes place. As a result, the micellar size distribution observed is rather broad already at this initial stage. Due to the presence of two different diblock copolymers, the process of micellar growth involves not only the fusion of micelles but also the chain exchange between polymolecular micelles of different composition, which may slow the equilibration process. After a considerable aging time, the block copolymers seem to reach the equilibrium state, and an almost perfect bimodal size distribution is observed. According to the theoretical analysis given, both "pure" and "mixed" micelles constitute the micellar size distribution.
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