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Title: Improving Brush Polymer Infrared One-Dimensional Photonic Crystals via Linear Polymer Additives

Abstract

Brush block copolymers (BBCPs) enable the rapid fabrication of self-assembled one-dimensional photonic crystals with photonic band gaps that are tunable in the UV-vis-IR, where the peak wavelength of reflection scales with the molecular weight of the BBCPs. Due to the difficulty in synthesizing very large BBCPs, the fidelity of the assembled lamellar nanostructures drastically erodes as the domains become large enough to reflect IR light, severely limiting their performance as optical filters. To overcome this challenge, short linear homopolymers are used to swell the arrays to ~180% of the initial domain spacing, allowing for photonic band gaps up to~1410 nm without significant opacity in the visible, demonstrating improved ordering of the arrays. Additionally, blending BBCPs with random copolymers enables functional groups to be incorporated into the BBCP array without attaching them directly to the BBCPs. The addition of short linear polymers to the BBCP arrays thus offers a facile means of improving the self-assembly and optical properties of these materials, as well as adding a route to achieving films with greater functionality and tailorability, without the need to develop or optimize the processing conditions for each new brush polymer synthesized.

Authors:
; ; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation (NSF)
OSTI Identifier:
1239545
DOE Contract Number:  
AC02-06CH11357
Resource Type:
Journal Article
Journal Name:
Journal of the American Chemical Society
Additional Journal Information:
Journal Volume: 136; Journal Issue: 50; Journal ID: ISSN 0002-7863
Publisher:
American Chemical Society (ACS)
Country of Publication:
United States
Language:
English

Citation Formats

Macfarlane, Robert J., Kim, Bongkeun, Lee, Byeongdu, Weitekamp, Raymond A., Bates, Christopher M., Lee, Siu Fung, Chang, Alice B., Delaney, Kris T., Fredrickson, Glen H., Atwater, Harry A., and Grubbs, Robert H. Improving Brush Polymer Infrared One-Dimensional Photonic Crystals via Linear Polymer Additives. United States: N. p., 2014. Web. doi:10.1021/ja5093562.
Macfarlane, Robert J., Kim, Bongkeun, Lee, Byeongdu, Weitekamp, Raymond A., Bates, Christopher M., Lee, Siu Fung, Chang, Alice B., Delaney, Kris T., Fredrickson, Glen H., Atwater, Harry A., & Grubbs, Robert H. Improving Brush Polymer Infrared One-Dimensional Photonic Crystals via Linear Polymer Additives. United States. https://doi.org/10.1021/ja5093562
Macfarlane, Robert J., Kim, Bongkeun, Lee, Byeongdu, Weitekamp, Raymond A., Bates, Christopher M., Lee, Siu Fung, Chang, Alice B., Delaney, Kris T., Fredrickson, Glen H., Atwater, Harry A., and Grubbs, Robert H. 2014. "Improving Brush Polymer Infrared One-Dimensional Photonic Crystals via Linear Polymer Additives". United States. https://doi.org/10.1021/ja5093562.
@article{osti_1239545,
title = {Improving Brush Polymer Infrared One-Dimensional Photonic Crystals via Linear Polymer Additives},
author = {Macfarlane, Robert J. and Kim, Bongkeun and Lee, Byeongdu and Weitekamp, Raymond A. and Bates, Christopher M. and Lee, Siu Fung and Chang, Alice B. and Delaney, Kris T. and Fredrickson, Glen H. and Atwater, Harry A. and Grubbs, Robert H.},
abstractNote = {Brush block copolymers (BBCPs) enable the rapid fabrication of self-assembled one-dimensional photonic crystals with photonic band gaps that are tunable in the UV-vis-IR, where the peak wavelength of reflection scales with the molecular weight of the BBCPs. Due to the difficulty in synthesizing very large BBCPs, the fidelity of the assembled lamellar nanostructures drastically erodes as the domains become large enough to reflect IR light, severely limiting their performance as optical filters. To overcome this challenge, short linear homopolymers are used to swell the arrays to ~180% of the initial domain spacing, allowing for photonic band gaps up to~1410 nm without significant opacity in the visible, demonstrating improved ordering of the arrays. Additionally, blending BBCPs with random copolymers enables functional groups to be incorporated into the BBCP array without attaching them directly to the BBCPs. The addition of short linear polymers to the BBCP arrays thus offers a facile means of improving the self-assembly and optical properties of these materials, as well as adding a route to achieving films with greater functionality and tailorability, without the need to develop or optimize the processing conditions for each new brush polymer synthesized.},
doi = {10.1021/ja5093562},
url = {https://www.osti.gov/biblio/1239545}, journal = {Journal of the American Chemical Society},
issn = {0002-7863},
number = 50,
volume = 136,
place = {United States},
year = {Wed Dec 17 00:00:00 EST 2014},
month = {Wed Dec 17 00:00:00 EST 2014}
}