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Hardy CG, Tang C. Advances in square arrays through self-assembly and directed self-assembly of block copolymers. ACTA ACUST UNITED AC 2012. [DOI: 10.1002/polb.23174] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Zhong M, Kim EK, McGann JP, Chun SE, Whitacre JF, Jaroniec M, Matyjaszewski K, Kowalewski T. Electrochemically Active Nitrogen-Enriched Nanocarbons with Well-Defined Morphology Synthesized by Pyrolysis of Self-Assembled Block Copolymer. J Am Chem Soc 2012; 134:14846-57. [DOI: 10.1021/ja304352n] [Citation(s) in RCA: 331] [Impact Index Per Article: 27.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Mingjiang Zhong
- Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh,
Pennsylvania 15213, United States
| | - Eun Kyung Kim
- Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh,
Pennsylvania 15213, United States
| | - John P. McGann
- Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh,
Pennsylvania 15213, United States
| | - Sang-Eun Chun
- Department of Material Science
and Engineering, Carnegie Mellon University, 5000 Forbes Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Jay F. Whitacre
- Department of Material Science
and Engineering, Carnegie Mellon University, 5000 Forbes Avenue, Pittsburgh, Pennsylvania 15213, United States
- Department of Engineering and
Public Policy, Carnegie Mellon University, 5000 Forbes Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Mietek Jaroniec
- Department of Chemistry, Kent State University, Kent, Ohio 44242, United States
| | - Krzysztof Matyjaszewski
- Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh,
Pennsylvania 15213, United States
| | - Tomasz Kowalewski
- Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh,
Pennsylvania 15213, United States
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Marencic AP, Chaikin PM, Register RA. Orientational order in cylinder-forming block copolymer thin films. PHYSICAL REVIEW. E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS 2012; 86:021507. [PMID: 23005769 DOI: 10.1103/physreve.86.021507] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2012] [Indexed: 06/01/2023]
Abstract
Shear can impart a high degree of orientational order to supported block copolymer thin films containing one or more layers of cylindrical microdomains, leading to a striped pattern with a period of tens of nanometers extending over macroscopic (centimeter-squared) areas. Though the as-deposited films have a polygrain structure, after shearing at sufficiently high stresses the only defects which remain are isolated dislocations, and the orientational order can be quite high (nematic or twofold orientational order parameter >0.99, as measured by tapping-mode atomic force microscopy). The effect of isolated dislocations on orientational order is adequately captured by an isotropic elastic continuum model of the structure surrounding the dislocation, producing a linear decrease of order parameter with dislocation density. Even at zero dislocation density, however, the order parameter does not quite reach unity, due to small-amplitude undulations of the cylinders about their axes which persist in the transverse direction over several cylinder periods.
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Affiliation(s)
- Andrew P Marencic
- Department of Chemical and Biological Engineering, Princeton University, Princeton, New Jersey 08544, USA
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Lee SS, Tang SB, Smilgies DM, Woll AR, Loth MA, Mativetsky JM, Anthony JE, Loo YL. Guiding crystallization around bends and sharp corners. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2012; 24:2692-2698. [PMID: 22511330 DOI: 10.1002/adma.201104619] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2011] [Revised: 01/27/2012] [Indexed: 05/31/2023]
Abstract
Control over the molecular orientation in organic thin films is demonstrated with precise in-plane spatial resolution over large areas. By exploiting the differential crystallization rates on substrates with different surface energies, the radial symmetry of spherulitic growth can be disrupted by preferentially selecting the molecular orientations that promote growth along the paths of the underlying patterns.
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Affiliation(s)
- Stephanie S Lee
- Department of Chemical and Biological Engineering, Princeton University, NJ 08544, USA
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55
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Wu D, Xu F, Sun B, Fu R, He H, Matyjaszewski K. Design and Preparation of Porous Polymers. Chem Rev 2012; 112:3959-4015. [DOI: 10.1021/cr200440z] [Citation(s) in RCA: 1339] [Impact Index Per Article: 111.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Dingcai Wu
- Materials Science Institute,
Key Laboratory for Polymeric Composite and Functional Materials of
Ministry of Education, School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou 510275, People's
Republic of China
| | - Fei Xu
- Materials Science Institute,
Key Laboratory for Polymeric Composite and Functional Materials of
Ministry of Education, School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou 510275, People's
Republic of China
| | - Bin Sun
- Materials Science Institute,
Key Laboratory for Polymeric Composite and Functional Materials of
Ministry of Education, School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou 510275, People's
Republic of China
| | - Ruowen Fu
- Materials Science Institute,
Key Laboratory for Polymeric Composite and Functional Materials of
Ministry of Education, School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou 510275, People's
Republic of China
| | - Hongkun He
- Department
of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh,
Pennsylvania 15213, United States
| | - Krzysztof Matyjaszewski
- Department
of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh,
Pennsylvania 15213, United States
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56
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McGann JP, Zhong M, Kim EK, Natesakhawat S, Jaroniec M, Whitacre JF, Matyjaszewski K, Kowalewski T. Block Copolymer Templating as a Path to Porous Nanostructured Carbons with Highly Accessible Nitrogens for Enhanced (Electro)chemical Performance. MACROMOL CHEM PHYS 2012. [DOI: 10.1002/macp.201100691] [Citation(s) in RCA: 68] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Wang J, de Jeu WH, Müller P, Möller M, Mourran A. Thin Film Structure of Block Copolymer–Surfactant Complexes: Strongly Ionic Bonding Polymer Systems. Macromolecules 2012. [DOI: 10.1021/ma202079m] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jingbo Wang
- DWI an der RWTH Aachen e.V. and Institut für Technische und Makromolekulare Chemie an der RWTH Aachen, Pauwelsstrasse 8, D-52056
Aachen, Germany
| | - Wim H. de Jeu
- DWI an der RWTH Aachen e.V. and Institut für Technische und Makromolekulare Chemie an der RWTH Aachen, Pauwelsstrasse 8, D-52056
Aachen, Germany
| | - Paul Müller
- Institut für Anorganische Chemie der RWTH Aachen, Prof. Pirlet-Strasse
1, D-52056 Aachen, Germany
| | - Martin Möller
- DWI an der RWTH Aachen e.V. and Institut für Technische und Makromolekulare Chemie an der RWTH Aachen, Pauwelsstrasse 8, D-52056
Aachen, Germany
| | - Ahmed Mourran
- DWI an der RWTH Aachen e.V. and Institut für Technische und Makromolekulare Chemie an der RWTH Aachen, Pauwelsstrasse 8, D-52056
Aachen, Germany
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60
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Rao J, Păunescu E, Mirmohades M, Gadwal I, Khaydarov A, Hawker CJ, Bang J, Khan A. Supramolecular mimics of phase separating covalent diblock copolymers. Polym Chem 2012. [DOI: 10.1039/c2py20125a] [Citation(s) in RCA: 28] [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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61
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Boyer C, Soeriyadi AH, Zetterlund PB, Whittaker MR. Synthesis of Complex Multiblock Copolymers via a Simple Iterative Cu(0)-Mediated Radical Polymerization Approach. Macromolecules 2011. [DOI: 10.1021/ma201529j] [Citation(s) in RCA: 158] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Cyrille Boyer
- Centre for Advanced Macromolecular Design (CAMD), School of Chemical Engineering, The University of New South Wales, Sydney, NSW 2052, Australia
| | - Alexander H. Soeriyadi
- Centre for Advanced Macromolecular Design (CAMD), School of Chemical Engineering, The University of New South Wales, Sydney, NSW 2052, Australia
| | - Per B. Zetterlund
- Centre for Advanced Macromolecular Design (CAMD), School of Chemical Engineering, The University of New South Wales, Sydney, NSW 2052, Australia
| | - Michael R. Whittaker
- Centre for Advanced Macromolecular Design (CAMD), School of Chemical Engineering, The University of New South Wales, Sydney, NSW 2052, Australia
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