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Title: Tunable structural color of bottlebrush block copolymers through direct-write 3D printing from solution

Abstract

Additive manufacturing of functional materials is limited by control of microstructure and assembly at the nanoscale. In this work, we integrate nonequilibrium self-assembly with direct-write three-dimensional (3D) printing to prepare bottlebrush block copolymer (BBCP) photonic crystals (PCs) with tunable structure color. After varying deposition conditions during printing of a single ink solution, peak reflected wavelength for BBCP PCs span a range of 403 to 626 nm (blue to red), corresponding to an estimated change in d-spacing of >70 nm (Bragg- Snell equation). Physical characterization confirms that these vivid optical effects are underpinned by tuning of lamellar domain spacing, which we attribute to modulation of polymer conformation. Using in situ optical microscopy and solvent-vapor annealing, we identify kinetic trapping of metastable microstructures during printing as the mechanism for domain size control. More generally, we present a robust processing scheme with potential for on-the-fly property tuning of a variety of functional materials.

Authors:
ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [2]; ORCiD logo [3]; ORCiD logo [4]; ORCiD logo [1]; ORCiD logo [1]
  1. Univ. of Illinois at Urbana-Champaign, IL (United States). Dept. of Chemical and Biomolecular Engineering
  2. Univ. of Michigan, Ann Arbor, MI (United States). Dept. of Chemical Engineering
  3. Univ. of Illinois at Urbana-Champaign, IL (United States). Dept. of Materials Science and Engineering
  4. Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS). X-Ray Science Division
Publication Date:
Research Org.:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities Division
OSTI Identifier:
1815527
Grant/Contract Number:  
AC02-06CH11357
Resource Type:
Accepted Manuscript
Journal Name:
Science Advances
Additional Journal Information:
Journal Volume: 6; Journal Issue: 24; Journal ID: ISSN 2375-2548
Publisher:
AAAS
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; 36 MATERIALS SCIENCE; 42 ENGINEERING

Citation Formats

Patel, Bijal B., Walsh, Dylan J., Kim, Do Hoon, Kwok, Justin, Lee, Byeongdu, Guironnet, Damien, and Diao, Ying. Tunable structural color of bottlebrush block copolymers through direct-write 3D printing from solution. United States: N. p., 2020. Web. doi:10.1126/sciadv.aaz7202.
Patel, Bijal B., Walsh, Dylan J., Kim, Do Hoon, Kwok, Justin, Lee, Byeongdu, Guironnet, Damien, & Diao, Ying. Tunable structural color of bottlebrush block copolymers through direct-write 3D printing from solution. United States. https://doi.org/10.1126/sciadv.aaz7202
Patel, Bijal B., Walsh, Dylan J., Kim, Do Hoon, Kwok, Justin, Lee, Byeongdu, Guironnet, Damien, and Diao, Ying. Mon . "Tunable structural color of bottlebrush block copolymers through direct-write 3D printing from solution". United States. https://doi.org/10.1126/sciadv.aaz7202. https://www.osti.gov/servlets/purl/1815527.
@article{osti_1815527,
title = {Tunable structural color of bottlebrush block copolymers through direct-write 3D printing from solution},
author = {Patel, Bijal B. and Walsh, Dylan J. and Kim, Do Hoon and Kwok, Justin and Lee, Byeongdu and Guironnet, Damien and Diao, Ying},
abstractNote = {Additive manufacturing of functional materials is limited by control of microstructure and assembly at the nanoscale. In this work, we integrate nonequilibrium self-assembly with direct-write three-dimensional (3D) printing to prepare bottlebrush block copolymer (BBCP) photonic crystals (PCs) with tunable structure color. After varying deposition conditions during printing of a single ink solution, peak reflected wavelength for BBCP PCs span a range of 403 to 626 nm (blue to red), corresponding to an estimated change in d-spacing of >70 nm (Bragg- Snell equation). Physical characterization confirms that these vivid optical effects are underpinned by tuning of lamellar domain spacing, which we attribute to modulation of polymer conformation. Using in situ optical microscopy and solvent-vapor annealing, we identify kinetic trapping of metastable microstructures during printing as the mechanism for domain size control. More generally, we present a robust processing scheme with potential for on-the-fly property tuning of a variety of functional materials.},
doi = {10.1126/sciadv.aaz7202},
journal = {Science Advances},
number = 24,
volume = 6,
place = {United States},
year = {Mon Jun 01 00:00:00 EDT 2020},
month = {Mon Jun 01 00:00:00 EDT 2020}
}

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