Templated Self-Assembly of a PS- Branch -PDMS Bottlebrush Copolymer
Abstract
The self-assembly of block copolymers with novel architectures offers tremendous opportunities in nanoscale patterning and fabrication. Here, the thin film morphology, annealing kinetics, and topographical templating of an unconventional Janus-type “PS-branch-PDMS” bottlebrush copolymer (BBCP) is described. In the Janus-type BBCP, each segment of the backbone connects two immiscible sidechain blocks, instead of having each type of sidechain at one end of the molecule as in a conventional BBCP. Thin films of a Janus-type BBCP with Mn = 609 kg/mol exhibited 22 nm period cylindrical microdomains with long-range order under solvent vapor annealing, and the effects of as-cast film thickness, solvent vapor pressure, and composition of the binary mixture of solvent vapors are described. The dynamic self-assembly process was characterized using in-situ grazing-incidence x-ray scattering. Templated selfassembly of the BBCP within lithographically patterned substrates was demonstrated, showing distinct pattern orientation and dimensions that differ from conventional BCPs. Self-consistent field theory is used to elucidate details of the templated self-assembly behavior within confinement.
- Authors:
-
[1];
[1];
[2];
[1];
[1]
- Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
- Brookhaven National Lab. (BNL), Upton, NY (United States)
- Publication Date:
- Research Org.:
- Brookhaven National Lab. (BNL), Upton, NY (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1469783
- Report Number(s):
- BNL-209025-2018-JAAM
Journal ID: ISSN 1530-6984
- Grant/Contract Number:
- SC0012704
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Nano Letters
- Additional Journal Information:
- Journal Volume: 18; Journal Issue: 7; Journal ID: ISSN 1530-6984
- Publisher:
- American Chemical Society
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 77 NANOSCIENCE AND NANOTECHNOLOGY; block-copolymer
Citation Formats
Cheng, Li-Chen, Gadelrab, Karim R., Kawamoto, Ken, Yager, Kevin G., Johnson, Jeremiah A., Alexander-Katz, Alfredo, and Ross, Caroline A. Templated Self-Assembly of a PS- Branch -PDMS Bottlebrush Copolymer. United States: N. p., 2018.
Web. doi:10.1021/acs.nanolett.8b01389.
Cheng, Li-Chen, Gadelrab, Karim R., Kawamoto, Ken, Yager, Kevin G., Johnson, Jeremiah A., Alexander-Katz, Alfredo, & Ross, Caroline A. Templated Self-Assembly of a PS- Branch -PDMS Bottlebrush Copolymer. United States. https://doi.org/10.1021/acs.nanolett.8b01389
Cheng, Li-Chen, Gadelrab, Karim R., Kawamoto, Ken, Yager, Kevin G., Johnson, Jeremiah A., Alexander-Katz, Alfredo, and Ross, Caroline A. Thu .
"Templated Self-Assembly of a PS- Branch -PDMS Bottlebrush Copolymer". United States. https://doi.org/10.1021/acs.nanolett.8b01389. https://www.osti.gov/servlets/purl/1469783.
@article{osti_1469783,
title = {Templated Self-Assembly of a PS- Branch -PDMS Bottlebrush Copolymer},
author = {Cheng, Li-Chen and Gadelrab, Karim R. and Kawamoto, Ken and Yager, Kevin G. and Johnson, Jeremiah A. and Alexander-Katz, Alfredo and Ross, Caroline A.},
abstractNote = {The self-assembly of block copolymers with novel architectures offers tremendous opportunities in nanoscale patterning and fabrication. Here, the thin film morphology, annealing kinetics, and topographical templating of an unconventional Janus-type “PS-branch-PDMS” bottlebrush copolymer (BBCP) is described. In the Janus-type BBCP, each segment of the backbone connects two immiscible sidechain blocks, instead of having each type of sidechain at one end of the molecule as in a conventional BBCP. Thin films of a Janus-type BBCP with Mn = 609 kg/mol exhibited 22 nm period cylindrical microdomains with long-range order under solvent vapor annealing, and the effects of as-cast film thickness, solvent vapor pressure, and composition of the binary mixture of solvent vapors are described. The dynamic self-assembly process was characterized using in-situ grazing-incidence x-ray scattering. Templated selfassembly of the BBCP within lithographically patterned substrates was demonstrated, showing distinct pattern orientation and dimensions that differ from conventional BCPs. Self-consistent field theory is used to elucidate details of the templated self-assembly behavior within confinement.},
doi = {10.1021/acs.nanolett.8b01389},
journal = {Nano Letters},
number = 7,
volume = 18,
place = {United States},
year = {Thu Jun 07 00:00:00 EDT 2018},
month = {Thu Jun 07 00:00:00 EDT 2018}
}
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