1
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Xie J, Shi AC. Phase Behavior of Binary Blends of Diblock Copolymers: Progress and Opportunities. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:11491-11509. [PMID: 37535849 DOI: 10.1021/acs.langmuir.3c01175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/05/2023]
Abstract
The phase behavior of binary blends of diblock copolymers has been examined extensively in the past decades. Experimental and theoretical studies have demonstrated that mixing two different block copolymers provides an efficient and versatile route to regulate their self-assembled morphologies. A good understanding of the principles governing the self-assembly of block copolymer blends has been obtained from the study of A1B1/A2B2 diblock copolymer blends. The second (A2B2) diblocks could act synergistically as fillers and cosurfactants to regulate the domain size and interfacial properties, resulting in the formation of ordered phases not found in the parent (A1B1 or A2B2) diblock copolymer melts. The study of A1B1/A2B2 block copolymer blends further provides a solid foundation for future research on more complex block copolymer blends.
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Affiliation(s)
- Jiayu Xie
- Department of Physics & Astronomy, McMaster University, Hamilton, Ontario L8S 4M1, Canada
| | - An-Chang Shi
- Department of Physics & Astronomy, McMaster University, Hamilton, Ontario L8S 4M1, Canada
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2
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Hydrogen bonding induced microphase and macrophase separations in binary block copolymer blends. POLYMER 2022. [DOI: 10.1016/j.polymer.2022.125501] [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]
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3
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Park SJ, Bates FS, Dorfman KD. Alternating Gyroid in Block Polymer Blends. ACS Macro Lett 2022; 11:643-650. [PMID: 35570813 DOI: 10.1021/acsmacrolett.2c00115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Alternating gyroid is a lower symmetry variant of the double gyroid morphology, where the left-handed and right-handed chiral networks are physically distinct. This structure is of particular interest for photonic applications owing to predictions of a complete photonic band gap subject to the requirement of a large dielectric contrast between the individual networks and sufficient optical matching between one of the networks and the matrix. We provide evidence, via self-consistent field theory (SCFT), that stoichiometric blends of double-gyroid-forming AB and BC diblock copolymers with relatively immiscible A and C blocks should form an alternating gyroid morphology with complementary three-dimensional A and C networks that have a free energy that is nearly degenerate with two phase-separated double gyroid states. Solvent casting offers the potential for trapping this binary mixture of diblock copolymers in this metastable alternating gyroid phase. Theory further predicts that the addition of a minuscule amount (<1%) of ABC triblock terpolymer will open an alternating gyroid stability window in the resulting ternary-phase diagram. The surfactant-like stabilization produced by the triblock is relatively insensitive to its exact composition provided the B-block forms a sufficiently long bridge between the A-rich and C-rich networks. This blending strategy provides significant synthetic and material processing advantages compared to prevailing methods to produce an alternating gyroid phase in block polymers.
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Affiliation(s)
- So Jung Park
- Department of Chemical Engineering and Materials Science, University of Minnesota − Twin Cities, 421 Washington Avenue SE, Minneapolis, Minnesota 55455, United States
| | - Frank S. Bates
- Department of Chemical Engineering and Materials Science, University of Minnesota − Twin Cities, 421 Washington Avenue SE, Minneapolis, Minnesota 55455, United States
| | - Kevin D. Dorfman
- Department of Chemical Engineering and Materials Science, University of Minnesota − Twin Cities, 421 Washington Avenue SE, Minneapolis, Minnesota 55455, United States
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4
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Magruder BR, Park SJ, Collanton RP, Bates FS, Dorfman KD. Laves Phase Field in a Diblock Copolymer Alloy. Macromolecules 2022. [DOI: 10.1021/acs.macromol.2c00346] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Benjamin R. Magruder
- Department of Chemical Engineering and Materials Science, University of Minnesota Twin Cities, 421 Washington Ave SE, Minneapolis, Minnesota 55455, United States
| | - So Jung Park
- Department of Chemical Engineering and Materials Science, University of Minnesota Twin Cities, 421 Washington Ave SE, Minneapolis, Minnesota 55455, United States
| | - Ryan P. Collanton
- Department of Chemical Engineering and Materials Science, University of Minnesota Twin Cities, 421 Washington Ave SE, Minneapolis, Minnesota 55455, United States
| | - Frank S. Bates
- Department of Chemical Engineering and Materials Science, University of Minnesota Twin Cities, 421 Washington Ave SE, Minneapolis, Minnesota 55455, United States
| | - Kevin D. Dorfman
- Department of Chemical Engineering and Materials Science, University of Minnesota Twin Cities, 421 Washington Ave SE, Minneapolis, Minnesota 55455, United States
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5
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Affiliation(s)
- Kevin D. Dorfman
- Department of Chemical Engineering and Materials Science, University of Minnesota Twin Cities, 421 Washington Ave SE, Minneapolis, Minnesota 55455, United States
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6
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Willis JD, Beardsley TM, Matsen MW. Simple and Accurate Calibration of the Flory–Huggins Interaction Parameter. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c02115] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- James D. Willis
- Department of Physics & Astronomy, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
| | - Tom M. Beardsley
- Department of Physics & Astronomy, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
| | - Mark W. Matsen
- Department of Physics & Astronomy, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
- Department of Chemical Engineering, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
- Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
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7
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Anderson ER, Daga VK, Gido SP, Watkins JJ. Hydrogen bond mediated self‐assembly of two diblock copolymers. JOURNAL OF POLYMER SCIENCE 2020. [DOI: 10.1002/pol.20200599] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Eric R. Anderson
- Department of Polymer Science and Engineering University of Massachusetts Amherst Amherst Massachusetts USA
| | - Vikram K. Daga
- Department of Chemical Engineering University of Massachusetts Amherst Amherst Massachusetts USA
| | - Samuel P. Gido
- Department of Polymer Science and Engineering University of Massachusetts Amherst Amherst Massachusetts USA
| | - James J. Watkins
- Department of Polymer Science and Engineering University of Massachusetts Amherst Amherst Massachusetts USA
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8
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Jung DS, Bang J, Park TW, Lee SH, Jung YK, Byun M, Cho YR, Kim KH, Seong GH, Park WI. Pattern formation of metal-oxide hybrid nanostructures via the self-assembly of di-block copolymer blends. NANOSCALE 2019; 11:18559-18567. [PMID: 31342044 DOI: 10.1039/c9nr04038b] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The templated self-assembly of block copolymers (BCPs) with a high Flory-Huggins interaction parameter (χ) can effectively create ultrafine, well-ordered nanostructures in the range of 5-30 nm. However, the self-assembled BCP patterns remain limited to possible morphological geometries and materials. Here, we introduce a novel and useful self-assembly method of di-BCP blends capable of generating diverse hybrid nanostructures consisting of oxide and metal materials through the rapid microphase separation of A-B/B-C BCP blends. We successfully obtained various hybridized BCP morphologies which cannot be acquired from a single di-BCP, such as hexagonally arranged hybrid dot and dot-in-hole patterns by controlling the mixing ratios of the solvents with a binary solvent annealing process. Furthermore, we demonstrate how the binary solvent vapor annealing process can provide a wide range of pattern geometries to di-BCP blends, showing a well-defined spontaneous one-to-one accommodation in dot-in-hole nanostructures. Specifically, we show clearly how the self-assembled BCPs can be functionalized via selective reduction and/or an oxidation process, resulting in the excellent positioning of confined silica nanodots into each nanospace of a Pt mesh. These results suggest a new method to achieve the pattern formation of more diverse and complex hybrid nanostructures using various blended BCPs.
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Affiliation(s)
- Dae Soo Jung
- Electronic Convergence Materials Division, Korea Institute of Ceramic Engineering & Technology (KICET), 101 Soho-ro, Jinju 52851, Republic of Korea.
| | - Jiwon Bang
- Electronic Convergence Materials Division, Korea Institute of Ceramic Engineering & Technology (KICET), 101 Soho-ro, Jinju 52851, Republic of Korea.
| | - Tae Wan Park
- Electronic Convergence Materials Division, Korea Institute of Ceramic Engineering & Technology (KICET), 101 Soho-ro, Jinju 52851, Republic of Korea.
| | - Seung Hyup Lee
- Electronic Convergence Materials Division, Korea Institute of Ceramic Engineering & Technology (KICET), 101 Soho-ro, Jinju 52851, Republic of Korea.
| | - Yun Kyung Jung
- Department of Biomedical Engineering, Inje University, 197 Inje-ro, Nam-Gu, Kimhae, Republic of Korea
| | - Myunghwan Byun
- Department of Advanced Materials Engineering, Keimyung University, 1095 Dalgubeol-daero, Daegu 42601, Republic of Korea
| | - Young-Rae Cho
- Department of Materials Science and Engineering, Pusan National University (PNU), Pusan 46241, Republic of Korea
| | - Kwang Ho Kim
- Department of Materials Science and Engineering, Pusan National University (PNU), Pusan 46241, Republic of Korea and Global Frontier R&D Center for Hybrid Interface Materials, Busan 46241, Republic of Korea.
| | - Gi Hun Seong
- Department of Bionano Engineering, Hanyang University, Ansan 15588, Republic of Korea.
| | - Woon Ik Park
- Electronic Convergence Materials Division, Korea Institute of Ceramic Engineering & Technology (KICET), 101 Soho-ro, Jinju 52851, Republic of Korea.
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9
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Pan H, Zhang W, Xiao A, Lyu X, Hou P, Shen Z, Fan X. Hierarchically ordered nanostructures of a supramolecular rod-coil block copolymer with a hydrogen-bonded discotic mesogen. Polym Chem 2019. [DOI: 10.1039/c8py01726c] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Supramolecular liquid crystalline block copolymers prepared via hydrogen bonding exhibit hierarchical structures that can be tuned by varying the molar ratio of the discotic hydrogen-bonding acceptor to the block copolymer donor.
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Affiliation(s)
- Hongbing Pan
- Beijing National Laboratory for Molecular Sciences
- Key Laboratory of Polymer Chemistry and Physics of Ministry of Education
- Center for Soft Matter Science and Engineering
- College of Chemistry and Molecular Engineering
- Peking University
| | - Wei Zhang
- Beijing National Laboratory for Molecular Sciences
- Key Laboratory of Polymer Chemistry and Physics of Ministry of Education
- Center for Soft Matter Science and Engineering
- College of Chemistry and Molecular Engineering
- Peking University
| | - Anqi Xiao
- Beijing National Laboratory for Molecular Sciences
- Key Laboratory of Polymer Chemistry and Physics of Ministry of Education
- Center for Soft Matter Science and Engineering
- College of Chemistry and Molecular Engineering
- Peking University
| | - Xiaolin Lyu
- Beijing National Laboratory for Molecular Sciences
- Key Laboratory of Polymer Chemistry and Physics of Ministry of Education
- Center for Soft Matter Science and Engineering
- College of Chemistry and Molecular Engineering
- Peking University
| | - Pingping Hou
- Beijing National Laboratory for Molecular Sciences
- Key Laboratory of Polymer Chemistry and Physics of Ministry of Education
- Center for Soft Matter Science and Engineering
- College of Chemistry and Molecular Engineering
- Peking University
| | - Zhihao Shen
- Beijing National Laboratory for Molecular Sciences
- Key Laboratory of Polymer Chemistry and Physics of Ministry of Education
- Center for Soft Matter Science and Engineering
- College of Chemistry and Molecular Engineering
- Peking University
| | - Xinghe Fan
- Beijing National Laboratory for Molecular Sciences
- Key Laboratory of Polymer Chemistry and Physics of Ministry of Education
- Center for Soft Matter Science and Engineering
- College of Chemistry and Molecular Engineering
- Peking University
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10
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Predicting the phase behavior of ABAC tetrablock terpolymers: Sensitivity to Flory–Huggins interaction parameters. POLYMER 2018. [DOI: 10.1016/j.polymer.2018.08.070] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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11
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Arora A, Qin J, Morse DC, Delaney KT, Fredrickson GH, Bates FS, Dorfman KD. Broadly Accessible Self-Consistent Field Theory for Block Polymer Materials Discovery. Macromolecules 2016. [DOI: 10.1021/acs.macromol.6b00107] [Citation(s) in RCA: 115] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Akash Arora
- Department of Chemical Engineering and
Materials Science, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Jian Qin
- Department of Chemical Engineering, Stanford University, Stanford, California 94305, United States
| | - David C. Morse
- Department of Chemical Engineering and
Materials Science, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Kris T. Delaney
- Department of Chemical Engineering and
Materials Research Laboratory, University of California, Santa Barbara, Santa
Barbara, California 93106, United States
| | - Glenn H. Fredrickson
- Department of Chemical Engineering and
Materials Research Laboratory, University of California, Santa Barbara, Santa
Barbara, California 93106, United States
| | - Frank S. Bates
- Department of Chemical Engineering and
Materials Science, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Kevin D. Dorfman
- Department of Chemical Engineering and
Materials Science, University of Minnesota, Minneapolis, Minnesota 55455, United States
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12
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Chanpuriya S, Kim K, Zhang J, Lee S, Arora A, Dorfman KD, Delaney KT, Fredrickson GH, Bates FS. Cornucopia of Nanoscale Ordered Phases in Sphere-Forming Tetrablock Terpolymers. ACS NANO 2016; 10:4961-72. [PMID: 27055118 DOI: 10.1021/acsnano.6b00495] [Citation(s) in RCA: 62] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
We report the phase behavior of a series of poly(styrene)-b-poly(isoprene)-b-poly(styrene)'-b-poly(ethylene oxide) (SIS'O) tetrablock terpolymers. This study was motivated by self-consistent field theory (SCFT) calculations that anticipate a rich array of sphere-forming morphologies with variations in the molecular symmetry parameter τ = NS/(NS + NS'), where N is the block degree of polymerization and the volume fraction of O is less than about 0.22. Eight SIS'O samples, with τ ranging from 0.21 to 0.73, were synthesized and investigated using small-angle X-ray scattering and transmission electron microscopy, yielding evidence of nine different spherical phases: hexagonal, FCC, HCP, BCC, rhombohedral (tentative), liquid-like packing, dodecagonal quasicrystal, and Frank-Kasper σ and A15 phases. At temperatures close to the order-disorder transition, these tetrablocks behave as pseudo-[SIS']-O diblocks and form equilibrium morphologies mediated by facile chain exchange between micelles. Transition from equilibrium to nonequilibrium behavior occurs at a temperature (Terg) several tens of degrees below the order-disorder transition temperature, speculated to be coincident with the loss of ergodicity, as chain exchange is arrested due to increased segregation strength between the core (O) and corona (SIS') blocks. Nonequilibrium ordered structures form when T < Terg; these are interpreted using SCFT calculations to elucidate the free energy landscape driving ordering in the S and I block matrix. These experiments demonstrate a profound dependence on phase stability with variations in τ and temperature, providing insights into the formation of ordered phase symmetry in this class of asymmetric multiblock polymers.
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Affiliation(s)
- Siddharth Chanpuriya
- Department of Chemical Engineering and Materials Science, University of Minnesota , Minneapolis, Minnesota 55455, United States
| | - Kyungtae Kim
- Department of Chemical Engineering and Materials Science, University of Minnesota , Minneapolis, Minnesota 55455, United States
| | - Jingwen Zhang
- Department of Chemical Engineering and Materials Science, University of Minnesota , Minneapolis, Minnesota 55455, United States
| | - Sangwoo Lee
- Department of Chemical and Biological Engineering, Rensselaer Polytechnic Institute , Troy, New York 12180, United States
| | - Akash Arora
- Department of Chemical Engineering and Materials Science, University of Minnesota , Minneapolis, Minnesota 55455, United States
| | - Kevin D Dorfman
- Department of Chemical Engineering and Materials Science, University of Minnesota , Minneapolis, Minnesota 55455, United States
| | - Kris T Delaney
- Materials Research Laboratory, University of California , Santa Barbara, California 93106, United States
| | - Glenn H Fredrickson
- Materials Research Laboratory, University of California , Santa Barbara, California 93106, United States
| | - Frank S Bates
- Department of Chemical Engineering and Materials Science, University of Minnesota , Minneapolis, Minnesota 55455, United States
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13
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Abstract
Ultrafine, uniform nanostructures with excellent functionalities can be formed by self-assembly of block copolymer (BCP) thin films. However, extension of their geometric variability is not straightforward due to their limited thin film morphologies. Here, we report that unusual and spontaneous positioning between host and guest BCP microdomains, even in the absence of H-bond linkages, can create hybridized morphologies that cannot be formed from a neat BCP. Our self-consistent field theory (SCFT) simulation results theoretically support that the precise registration of a spherical BCP microdomain (guest, B-b-C) at the center of a perforated lamellar BCP nanostructure (host, A-b-B) can energetically stabilize the blended morphology. As an exemplary application of the hybrid nanotemplate, a nanoring-type Ge2Sb2Te5 (GST) phase-change memory device with an extremely low switching current is demonstrated. These results suggest the possibility of a new pathway to construct more diverse and complex nanostructures using controlled blending of various BCPs.
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14
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Shi LY, Zhou Y, Shen Z, Fan XH. Hierarchical Structures in Thin Films of Macrophase- and Microphase-Separated AB/AC Diblock Copolymer Blends. Macromolecules 2012. [DOI: 10.1021/ma202660f] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ling-Ying Shi
- Beijing National Laboratory for Molecular
Sciences,
Key Laboratory of Polymer Chemistry and Physics of Ministry of Education,
College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Yu Zhou
- Beijing National Laboratory for Molecular
Sciences,
Key Laboratory of Polymer Chemistry and Physics of Ministry of Education,
College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Zhihao Shen
- Beijing National Laboratory for Molecular
Sciences,
Key Laboratory of Polymer Chemistry and Physics of Ministry of Education,
College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Xing-He Fan
- Beijing National Laboratory for Molecular
Sciences,
Key Laboratory of Polymer Chemistry and Physics of Ministry of Education,
College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
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15
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Tang C, Hur SM, Stahl BC, Sivanandan K, Dimitriou M, Pressly E, Fredrickson GH, Kramer EJ, Hawker CJ. Thin Film Morphology of Block Copolymer Blends with Tunable Supramolecular Interactions for Lithographic Applications. Macromolecules 2010. [DOI: 10.1021/ma902843q] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | - Su-mi Hur
- Materials Research Laboratory
- Department of Chemical Engineering
| | | | | | | | - Eric Pressly
- Materials Research Laboratory
- Department of Materials
| | - Glenn H. Fredrickson
- Materials Research Laboratory
- Department of Chemical Engineering
- Department of Materials
| | - Edward J. Kramer
- Materials Research Laboratory
- Department of Chemical Engineering
- Department of Materials
| | - Craig J. Hawker
- Materials Research Laboratory
- Department of Materials
- Department of Chemistry and Biochemistry
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16
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Yabu H, Motoyoshi K, Higuchi T, Shimomura M. Hierarchical structures in AB/AC type diblock-copolymer blend particles. Phys Chem Chem Phys 2010; 12:11944-7. [DOI: 10.1039/c0cp00011f] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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17
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Hamley IW, O'Driscoll BMD, Lotze G, Moulton C, Allgaier JÃ, Frielinghaus H. Highly Asymmetric Phase Diagram of a Poly(1,2-octylene oxide)âPoly(ethylene oxide) Diblock Copolymer System Comprising a Brush-Like Poly(1,2-octylene oxide) Block. Macromol Rapid Commun 2009; 30:2141-6. [DOI: 10.1002/marc.200900474] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2009] [Revised: 08/24/2009] [Indexed: 11/09/2022]
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18
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Tang C, Lennon EM, Fredrickson GH, Kramer EJ, Hawker CJ. Evolution of Block Copolymer Lithography to Highly Ordered Square Arrays. Science 2008; 322:429-32. [PMID: 18818367 DOI: 10.1126/science.1162950] [Citation(s) in RCA: 436] [Impact Index Per Article: 27.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Affiliation(s)
- Chuanbing Tang
- Materials Research Laboratory, University of California, Santa Barbara, CA 93106, USA
- Department of Chemical Engineering, University of California, Santa Barbara, CA 93106, USA
- Department of Materials, University of California, Santa Barbara, CA 93106, USA
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, CA 93106, USA
| | - Erin M. Lennon
- Materials Research Laboratory, University of California, Santa Barbara, CA 93106, USA
- Department of Chemical Engineering, University of California, Santa Barbara, CA 93106, USA
- Department of Materials, University of California, Santa Barbara, CA 93106, USA
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, CA 93106, USA
| | - Glenn H. Fredrickson
- Materials Research Laboratory, University of California, Santa Barbara, CA 93106, USA
- Department of Chemical Engineering, University of California, Santa Barbara, CA 93106, USA
- Department of Materials, University of California, Santa Barbara, CA 93106, USA
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, CA 93106, USA
| | - Edward J. Kramer
- Materials Research Laboratory, University of California, Santa Barbara, CA 93106, USA
- Department of Chemical Engineering, University of California, Santa Barbara, CA 93106, USA
- Department of Materials, University of California, Santa Barbara, CA 93106, USA
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, CA 93106, USA
| | - Craig J. Hawker
- Materials Research Laboratory, University of California, Santa Barbara, CA 93106, USA
- Department of Chemical Engineering, University of California, Santa Barbara, CA 93106, USA
- Department of Materials, University of California, Santa Barbara, CA 93106, USA
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, CA 93106, USA
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19
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Mao H, Hillmyer MA. Morphological Behavior of Polystyrene-block-Polylactide/Polystyrene-block-Poly(ethylene oxide) Blends. MACROMOL CHEM PHYS 2008. [DOI: 10.1002/macp.200800087] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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20
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Crothers M, Zhou Z, Ricardo NMPS, Yang Z, Taboada P, Chaibundit C, Attwood D, Booth C. Solubilisation in aqueous micellar solutions of block copoly(oxyalkylene)s. Int J Pharm 2005; 293:91-100. [PMID: 15778048 DOI: 10.1016/j.ijpharm.2004.12.005] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2004] [Revised: 12/06/2004] [Accepted: 12/13/2004] [Indexed: 11/21/2022]
Abstract
The solubilisation capacities of micellar solutions of diblock and triblock copolymers composed of hydrophilic poly(ethylene oxide) and hydrophobic poly(styrene oxide) have been compared using the poorly water-soluble drug griseofulvin as a model solubilisate. Our results showed an increase of solubilisation capacity (expressed as mg griseofulvin per gram of hydrophobic block) with temperature and, for spherical micelles, with core volume before reaching limiting values. A change of micelle shape from spherical to cylindrical (or worm-like) resulting from an increase in micelle aggregation number was accompanied by a further enhancement of solubilisation capacity. Comparison with the solubilisation of the same drug in micellar solutions of block copolymers of poly(ethylene oxide) and poly(1,2-butylene oxide) showed that the solubilisation capacity of a poly(styrene oxide) block was approximately four times that of a poly(1,2-butylene oxide) block for spherical micelles. Solubilisation capacity at 25 degrees C was approximately doubled when griseofulvin was incorporated into a copolymer melt and micelles initially formed from the drug-loaded melt at 65 degrees C rather than by loading the drug into pre-micellised solution at 25 degrees C in the usual manner.
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Affiliation(s)
- Michael Crothers
- School of Pharmacy and Pharmaceutical Sciences, University of Manchester, Manchester M13 9PL, UK
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