Implications of grain size variation in magnetic field alignment of block copolymer blends

Rokhlenko, Yekaterina; Majewski, Pawel W.; Larson, Steven R.; Gopalan, Padma; Yager, Kevin G.; Osuji, Chinedum O.

doi:10.1021/acsmacrolett.7b00036

Title: Implications of grain size variation in magnetic field alignment of block copolymer blends

Journal Article · Tue Mar 28 00:00:00 EDT 2017 · ACS Macro Letters

DOI:https://doi.org/10.1021/acsmacrolett.7b00036· OSTI ID:1368673

Rokhlenko, Yekaterina ^[1]; Majewski, Pawel W. ^[2]; Larson, Steven R. ^[3];

^[3]; Yager, Kevin G. ^[4];

^[1]

Yale Univ., New Haven, CT (United States)
Brookhaven National Lab. (BNL), Upton, NY (United States); Univ. of Warsaw, Warsaw (Poland)
Univ. of Wisconsin, Madison, WI (United States)
Brookhaven National Lab. (BNL), Upton, NY (United States)

Recent experiments have highlighted the intrinsic magnetic anisotropy in coil–coil diblock copolymers, specifically in poly(styrene-block-4-vinylpyridine) (PS-b-P4VP), that enables magnetic field alignment at field strengths of a few tesla. We consider here the alignment response of two low molecular weight (MW) lamallae-forming PS-b-P4VP systems. Cooling across the disorder–order transition temperature (T_odt) results in strong alignment for the higher MW sample (5.5K), whereas little alignment is discernible for the lower MW system (3.6K). This disparity under otherwise identical conditions of field strength and cooling rate suggests that different average grain sizes are produced during slow cooling of these materials, with larger grains formed in the higher MW material. Blending the block copolymers results in homogeneous samples which display T_odt, d-spacings, and grain sizes that are intermediate between the two neat diblocks. Similarly, the alignment quality displays a smooth variation with the concentration of the higher MW diblock in the blends, and the size of grains likewise interpolates between limits set by the neat diblocks, with a factor of 3.5× difference in the grain size observed in high vs low MW neat diblocks. Finally, these results highlight the importance of grain growth kinetics in dictating the field response in block copolymers and suggests an unconventional route for the manipulation of such kinetics.

View Accepted Manuscript (DOE)

Cite

Export

Save

Research Organization:: Brookhaven National Laboratory (BNL), Upton, NY (United States). Center for Functional Nanomaterials (CFN)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

Grant/Contract Number:: SC00112704

OSTI ID:: 1368673

Report Number(s):: BNL-114014-2017-JA; KC0403020

Journal Information:: ACS Macro Letters, Vol. 6, Issue 4; ISSN 2161-1653

Publisher:: American Chemical Society (ACS)Copyright Statement

Country of Publication:: United States

Language:: English

Citation Metrics:

Cited by: 13 works

Citation information provided by
Web of Science

References (31)

Ordered structure in blends of block copolymers. 1. Miscibility criterion for lamellar block copolymers Hashimoto, Takeji; Yamasaki, Komei; Koizumi, Satoshi Macromolecules, Vol. 26, Issue 11 https://doi.org/10.1021/ma00063a039	journal	May 1993
Fluctuation effects in the theory of microphase separation in block copolymers Fredrickson, Glenn H.; Helfand, Eugene The Journal of Chemical Physics, Vol. 87, Issue 1 https://doi.org/10.1063/1.453566	journal	July 1987
Grain Shapes and Growth Kinetics of the Cylinder Phase in a Block Copolymer Solution Chastek, Thomas Q.; Lodge, Timothy P. Macromolecules, Vol. 37, Issue 13 https://doi.org/10.1021/ma049502d	journal	June 2004
Order-Disorder Transition and Alignment Dynamics of a Block Copolymer Under High Magnetic Fields by In Situ X-Ray Scattering Gopinadhan, Manesh; Majewski, Paweł W.; Choo, Youngwoo Physical Review Letters, Vol. 110, Issue 7 https://doi.org/10.1103/PhysRevLett.110.078301	journal	February 2013
Hierarchical Nanostructure Control in Rod−Coil Block Copolymers with Magnetic Fields Tao, Yuefei; Zohar, Hagar; Olsen, Bradley D. Nano Letters, Vol. 7, Issue 9 https://doi.org/10.1021/nl0712320	journal	September 2007
Modification of the Morphology of P(S- b -EO) Templated Thin TiO ₂ Films by Swelling with PS Homopolymer Perlich, J.; Schulz, L.; Abul Kashem, M. M. Langmuir, Vol. 23, Issue 20 https://doi.org/10.1021/la701412q	journal	August 2007
Phase Behavior of Block Copolymer/Homopolymer Blends Matsen, M. W. Macromolecules, Vol. 28, Issue 17 https://doi.org/10.1021/ma00121a011	journal	August 1995
Magnetic field alignment of block copolymers and polymer nanocomposites: Scalable microstructure control in functional soft materials Majewski, Pawel W.; Gopinadhan, Manesh; Osuji, Chinedum O. Journal of Polymer Science Part B: Polymer Physics, Vol. 50, Issue 1 https://doi.org/10.1002/polb.22382	journal	October 2011
Order–disorder transition and ordering kinetics in binary diblock copolymer mixtures of styrene and isoprene Floudas, G.; Vlassopoulos, D.; Pitsikalis, M. The Journal of Chemical Physics, Vol. 104, Issue 5 https://doi.org/10.1063/1.470965	journal	February 1996
Magnetic Field Alignment of a Diblock Copolymer Using a Supramolecular Route Gopinadhan, Manesh; Majewski, Pawel W.; Beach, Evan S. ACS Macro Letters, Vol. 1, Issue 1 https://doi.org/10.1021/mz2001059	journal	December 2011
Theory of Microphase Separation in Block Copolymers Leibler, Ludwik Macromolecules, Vol. 13, Issue 6 https://doi.org/10.1021/ma60078a047	journal	November 1980
Maximizing the grain growth rate during the disorder-to-order transition in block copolymer melts Kim, W. G.; Garetz, B. A.; Newstein, M. C. Journal of Polymer Science Part B: Polymer Physics, Vol. 39, Issue 19 https://doi.org/10.1002/polb.1197	journal	January 2001
Fluctuations, Phase Transitions, and Latent Heat in Short Diblock Copolymers: Comparison of Experiment, Simulation, and Theory Gillard, Timothy M.; Medapuram, Pavani; Morse, David C. Macromolecules, Vol. 48, Issue 8 https://doi.org/10.1021/acs.macromol.5b00277	journal	April 2015
Facile Alignment of Amorphous Poly(ethylene oxide) Microdomains in a Liquid Crystalline Block Copolymer Using Magnetic Fields: Toward Ordered Electrolyte Membranes Gopinadhan, Manesh; Majewski, Paweł W.; Osuji, Chinedum O. Macromolecules, Vol. 43, Issue 7 https://doi.org/10.1021/ma9026349	journal	April 2010
Microphase separation in block copolymer/homopolymer blends: Theory and experiment Floudas, G.; Hadjichristidis, N.; Stamm, M. The Journal of Chemical Physics, Vol. 106, Issue 8 https://doi.org/10.1063/1.473080	journal	February 1997
Phase Behavior and Morphological Characteristics of Compositionally Symmetric Diblock Copolymer Blends Kane, Lisaleigh; Satkowski, Michael M.; Smith, Steven D. Macromolecules, Vol. 29, Issue 27 https://doi.org/10.1021/ma9613291	journal	January 1996
Interplay between Smectic Ordering and Microphase Separation in a Series of Side-Group Liquid-Crystal Block Copolymers Hamley, I. W.; Castelletto, V.; Lu, Z. B. Macromolecules, Vol. 37, Issue 13 https://doi.org/10.1021/ma0498619	journal	June 2004
Identification of the Molecular Parameters that Govern Ordering Kinetics in a Block Copolymer Melt Balsara, N. P.; Garetz, B. A.; Chang, M. Y. Macromolecules, Vol. 31, Issue 16 https://doi.org/10.1021/ma980457h	journal	August 1998
Alignment of Self-Assembled Hierarchical Microstructure in Liquid Crystalline Diblock Copolymers Using High Magnetic Fields Osuji, Chinedum; Ferreira, Paulo J.; Mao, Guoping Macromolecules, Vol. 37, Issue 26 https://doi.org/10.1021/ma0483064	journal	December 2004
Grain Growth and Defect Annihilation in Block Copolymers Dai, H. J.; Balsara, N. P.; Garetz, B. A. Physical Review Letters, Vol. 77, Issue 17 https://doi.org/10.1103/PhysRevLett.77.3677	journal	October 1996
Kinetics of Phase Change. II Transformation‐Time Relations for Random Distribution of Nuclei Avrami, Melvin The Journal of Chemical Physics, Vol. 8, Issue 2 https://doi.org/10.1063/1.1750631	journal	February 1940
Grain shapes and growth kinetics during self-assembly of block copolymers Chastek, Thomas Q.; Lodge, Timothy P. Journal of Polymer Science Part B: Polymer Physics, Vol. 44, Issue 3 https://doi.org/10.1002/polb.20718	journal	January 2005
Scaling relations for grain autocorrelation functions during nucleation and growth Axe, J. D.; Yamada, Y. Physical Review B, Vol. 34, Issue 3 https://doi.org/10.1103/PhysRevB.34.1599	journal	August 1986
Monoliths of Semiconducting Block Copolymers by Magnetic Alignment Tran, Helen; Gopinadhan, Manesh; Majewski, Pawel W. ACS Nano, Vol. 7, Issue 6 https://doi.org/10.1021/nn401725a	journal	May 2013
Metrics of graininess: robust quantification of grain count from the non-uniformity of scattering rings Yager, Kevin G.; Majewski, Pawel W. Journal of Applied Crystallography, Vol. 47, Issue 6 https://doi.org/10.1107/S1600576714020822	journal	October 2014
Controlling Domain Spacing and Grain Size in Cylindrical Block Copolymer Thin Films by Means of Thermal and Solvent Vapor Annealing Gu, Xiaodan; Gunkel, Ilja; Hexemer, Alexander Macromolecules, Vol. 49, Issue 9 https://doi.org/10.1021/acs.macromol.6b00429	journal	April 2016
Kinetics of metastable states in block copolymer melts Fredrickson, Glenn H.; Binder, Kurt The Journal of Chemical Physics, Vol. 91, Issue 11 https://doi.org/10.1063/1.457294	journal	December 1989
Rapid Assembly of Nanolines with Precisely Controlled Spacing from Binary Blends of Block Copolymers Zhang, Xiaojiang; Murphy, Jeffrey N.; Wu, Nathanael L. Y. Macromolecules, Vol. 44, Issue 24 https://doi.org/10.1021/ma202064t	journal	December 2011
Dynamics of the Lamellar−Cylindrical Transition in Weakly Segregated Diblock Copolymer Melts Goveas, J. L.; Milner, S. T. Macromolecules, Vol. 30, Issue 9 https://doi.org/10.1021/ma961181l	journal	May 1997
Magnetic Alignment of Block Copolymer Microdomains by Intrinsic Chain Anisotropy Rokhlenko, Yekaterina; Gopinadhan, Manesh; Osuji, Chinedum O. Physical Review Letters, Vol. 115, Issue 25 https://doi.org/10.1103/PhysRevLett.115.258302	journal	December 2015
Phase and orientational behaviors in liquid crystalline main‐chain/side‐group block copolymers Ferri, Dino; Wolff, Dietmar; Springer, Jürgen Journal of Polymer Science Part B: Polymer Physics, Vol. 36, Issue 1 https://doi.org/10.1002/(SICI)1099-0488(19980115)36:1<21::AID-POLB3>3.3.CO;2-M	journal	January 1998

Cited By (1)

Directed Assembly of Hybrid Nanomaterials and Nanocomposites Zhang, Shanju; Pelligra, Candice I.; Feng, Xunda Advanced Materials, Vol. 30, Issue 18 https://doi.org/10.1002/adma.201705794	journal	March 2018

Similar Records

Star Block Copolymers at Homopolymer Interfaces: Conformation and Compatibilization

Journal Article · Mon Oct 09 00:00:00 EDT 2023 · Macromolecules · OSTI ID:1368673

Chen, Zhan; Steinmetz, Christian; Hu, Mingqiu; +5 more

High-χ diblock copolymers containing poly(vinylpyridine-N-oxide) segments

Journal Article · Thu Apr 20 00:00:00 EDT 2023 · Journal of Materials Chemistry. A · OSTI ID:1368673

Angelopoulou, Polyxeni P.; Kearney, Logan T.; Keum, Jong Kahk; +6 more

Rapid Ordering in “Wet Brush” Block Copolymer/Homopolymer Ternary Blends

Journal Article · Fri Dec 01 00:00:00 EST 2017 · ACS Nano · OSTI ID:1368673

Doerk, Gregory S.; Yager, Kevin G.

Related Subjects

77 NANOSCIENCE AND NANOTECHNOLOGY
magnetic alignment
Center for Functional Nanomaterials

Title: Implications of grain size variation in magnetic field alignment of block copolymer blends

Citation Formats

References (31)

Cited By (1)

Similar Records

Related Subjects