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Yu YG, Ko JH, An JH, Kang BG, Song YM, Lee JS. Self-assembly of POSS-Polystyrene Bottlebrush Block Copolymers on an Angle-Robust Selective Absorber for Enhancing the Purity of Reflective Structural Color. ACS APPLIED MATERIALS & INTERFACES 2022; 14:44753-44761. [PMID: 36075087 DOI: 10.1021/acsami.2c11194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
A facile approach for improving color purity is explored by the introduction of an angle-robust selective absorber (ARSA) into bottlebrush block copolymer (BBCP)-based one-dimensional (1D) photonic crystals (PCs). The BBCPs of poly[(3-(12-(cis-5-norbornene-exo-2,3-dicarboximido)dodecanoylamino)propyl POSS)-block-(norbornene-graft-styrene)], Px (x = 1-4), with ultrahigh molecular weights (Mn ∼ 2260 kDa) and low dispersities (D̵ ∼ 1.07) are synthesized by ring-opening metathesis polymerization. The 1D PCs of the lamellar structure are fabricated by self-assembly of the BBCP with different periodicities for full color-generation (blue, green, and red). The optically tailored substrate (i.e., ARSA) is used to modulate the spectral line shape with selective absorption in the near-infrared range. Optical simulation proposes the optimized 1D PC structures on the ARSA, and it provides the reproducibility of the predictable color. The simulated structures are well matched with the experimental results, verifying the enhancement of color saturation even at various incident angles (0-70°).
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Affiliation(s)
- Yong-Guen Yu
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST), 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea
| | - Joo Hwan Ko
- Electrical Engineering and Computer Science, Gwangju Institute of Science and Technology (GIST), 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea
| | - Jong Hyun An
- Department of Chemical Engineering, Soongsil University, Seoul 06978, Republic of Korea
| | - Beom-Goo Kang
- Department of Chemical Engineering, Soongsil University, Seoul 06978, Republic of Korea
| | - Young Min Song
- Electrical Engineering and Computer Science, Gwangju Institute of Science and Technology (GIST), 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea
| | - Jae-Suk Lee
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST), 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea
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2
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Patel BB, Pan T, Chang Y, Walsh DJ, Kwok JJ, Park KS, Patel K, Guironnet D, Sing CE, Diao Y. Concentration-Driven Self-Assembly of PS- b-PLA Bottlebrush Diblock Copolymers in Solution. ACS POLYMERS AU 2022; 2:232-244. [PMID: 35971423 PMCID: PMC9372993 DOI: 10.1021/acspolymersau.1c00057] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
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Bottlebrush polymers
are a class of semiflexible, hierarchical
macromolecules with unique potential for shape-, architecture-, and
composition-based structure–property design. It is now well-established
that in dilute to semidilute solution, bottlebrush homopolymers adopt
a wormlike conformation, which decreases in extension (persistence
length) as the concentration and molecular overlap increase. By comparison,
the solution phase self-assembly of bottlebrush diblock copolymers
(BBCP) in a good solvent remains poorly understood, despite critical
relevance for solution processing of ordered phases and photonic crystals.
In this work, we combine small-angle X-ray scattering, coarse-grained
simulation, and polymer synthesis to map the equilibrium phase behavior
and conformation of a set of large, nearly symmetric PS-b-PLA bottlebrush diblock copolymers in toluene. Three BBCP are synthesized,
with side chains of number-averaged molecular weights of 4500 (PS)
and 4200 g/mol (PLA) and total backbone degrees of polymerization
of 100, 255, and 400 repeat units. The grafting density is one side
chain per backbone repeat unit. With increasing concentration in solution,
all three polymers progress through a similar structural transition:
from dispersed, wormlike chains with concentration-dependent (decreasing)
extension, through the onset of disordered PS/PLA compositional fluctuations,
to the formation of a long-range ordered lamellar phase. With increasing
concentration in the microphase-separated regimes, the domain spacing
increases as individual chains partially re-extend due to block immiscibility.
Increases in the backbone degree of polymerization lead to changes
in the scattering profiles which are consistent with the increased
segregation strength. Coarse-grained simulations using an implicit
side-chain model are performed, and concentration-dependent self-assembly
behavior is qualitatively matched to experiments. Finally, using the
polymer with the largest backbone length, we demonstrate that lamellar
phases develop a well-defined photonic band gap in solution, which
can be tuned across the visible spectrum by varying polymer concentration.
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Affiliation(s)
- Bijal B. Patel
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign, 600 South Mathews Avenue, Urbana, Illinois 61801, United States
| | - Tianyuan Pan
- Department of Materials Science and Engineering, University of Illinois at Urbana−Champaign, 1304 W. Green Street, Urbana, Illinois 61801, United States
| | - Yilong Chang
- Department of Mechanical Science and Engineering, University of Illinois at Urbana-Champaign, 1206 W. Green St., MC 244, Urbana, Illinois 61801, United States
| | - Dylan J. Walsh
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign, 600 South Mathews Avenue, Urbana, Illinois 61801, United States
| | - Justin J. Kwok
- Department of Materials Science and Engineering, University of Illinois at Urbana−Champaign, 1304 W. Green Street, Urbana, Illinois 61801, United States
| | - Kyung Sun Park
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign, 600 South Mathews Avenue, Urbana, Illinois 61801, United States
| | - Kush Patel
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign, 600 South Mathews Avenue, Urbana, Illinois 61801, United States
| | - Damien Guironnet
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign, 600 South Mathews Avenue, Urbana, Illinois 61801, United States
| | - Charles E. Sing
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign, 600 South Mathews Avenue, Urbana, Illinois 61801, United States
| | - Ying Diao
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign, 600 South Mathews Avenue, Urbana, Illinois 61801, United States
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3
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Xu Y, Hickey RJ. Solvent-Responsive and Reversible Structural Coloration in Nanostructured Block Polymer Films. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c00639] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Yifan Xu
- Department of Material Science and Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Robert J. Hickey
- Department of Material Science and Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
- Materials Research Institute, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
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4
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Wu H, Chu C, Chen T, Yu M, Guo J, Li Z, Xu G, Cheng Y, Sun A. Electrically responsive structural colors from colloidal crystal arrays of PS@PANI core–shell nanoparticles. Colloids Surf A Physicochem Eng Asp 2019. [DOI: 10.1016/j.colsurfa.2019.05.049] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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5
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Higashiguchi K, Morita N, Matsuda K. Structural Colored Balloon Composed of Temperature-Responsive Polymers Showing LCST Behavior. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:12853-12860. [PMID: 30203977 DOI: 10.1021/acs.langmuir.8b02002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Structural colored balloons (SCBs) consisting of polymer thin film developed structural color by thin-layer interference on the shell. Thermoresponsive SCBs were prepared with poly(diethylene glycol monomethyl ether methacrylate)- co-poly( N-phenylacrylamide), which shows lower critical solution temperature (LCST) behavior. When cooling gelatin aqueous solution in which osmotic pressure was not operated, only hydration of the copolymer progressed due to LCST transition. The optical path length of the SCB increased due to swelling by water and subsequently decreased due to dissolution. The structural color changed according to the change in optical path length. In cold pure water, in addition to the hydration, osmotic pressure was operated to induce an influx of the outer solvent and the resulting diameter change also affected the shell thickness. The structural color change was analyzed to reveal that the dissolution of the polymer had significant effect on the developed structural color.
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Affiliation(s)
- Kenji Higashiguchi
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering , Kyoto University , Katsura , Nishikyo-ku, Kyoto 615-8510 , Japan
| | - Naoki Morita
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering , Kyoto University , Katsura , Nishikyo-ku, Kyoto 615-8510 , Japan
| | - Kenji Matsuda
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering , Kyoto University , Katsura , Nishikyo-ku, Kyoto 615-8510 , Japan
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Appold M, Grune E, Frey H, Gallei M. One-Step Anionic Copolymerization Enables Formation of Linear Ultrahigh-Molecular-Weight Block Copolymer Films Featuring Vivid Structural Colors in the Bulk State. ACS APPLIED MATERIALS & INTERFACES 2018; 10:18202-18212. [PMID: 29737829 DOI: 10.1021/acsami.8b02848] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Ultrahigh-molecular-weight (UHMW) tapered block copolymers (BCPs) consisting of polyisoprene- block-poly(4-methylstyrene) featuring overall molar masses in the range of 1101-2033 kg mol-1 ( Mw) are synthesized via a convenient one-step anionic copolymerization protocol. The obtained UHMW BCPs are investigated by differential scanning calorimetry, size exclusion chromatography, and 1H NMR spectroscopy. Microphase separation for the UHMW BCPs in the bulk state is investigated by transmission electron microscopy (TEM) measurements and scanning electron microscopy (SEM), revealing well-ordered lamellar and spherical domains with large domain sizes in the range of 100-200 nm. Excellent order and periodicity are observed for lamellar morphologies over large film areas of 90 × 120 μm. Because of this high order of the underlying domains and the different refractive indices of the block segments, vivid structural colors can be observed in the bulk state. Structural colors of BCP films are investigated by angle-dependent UV/vis measurements, revealing intensive reflection colors according to Bragg's law of diffraction. The optical characteristics are directly correlated to TEM and SEM results. Moreover, colored BCP films featuring spherical domains for one block segment with domain sizes of 97-122 nm revealed blue structural colors stemming from disordered particle scattering.
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Affiliation(s)
- Michael Appold
- Ernst-Berl-Institute for Chemical Engineering and Macromolecular Chemistry , Technische Universität Darmstadt , Alarich-Weiss-Straße 4 , 64287 Darmstadt , Germany
| | - Eduard Grune
- Institute of Organic Chemistry , Johannes Gutenberg-University Mainz , Duesbergweg 10-14 , 55128 Mainz , Germany
- Graduate School of Excellence Materials Science in Mainz (MAINZ) , Staudingerweg 9 , 55128 Mainz , Germany
| | - Holger Frey
- Institute of Organic Chemistry , Johannes Gutenberg-University Mainz , Duesbergweg 10-14 , 55128 Mainz , Germany
| | - Markus Gallei
- Ernst-Berl-Institute for Chemical Engineering and Macromolecular Chemistry , Technische Universität Darmstadt , Alarich-Weiss-Straße 4 , 64287 Darmstadt , Germany
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7
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Wu CS, Tsai PY, Wang TY, Lin EL, Huang YC, Chiang YW. Flexible or Robust Amorphous Photonic Crystals from Network-Forming Block Copolymers for Sensing Solvent Vapors. Anal Chem 2018. [PMID: 29514454 DOI: 10.1021/acs.analchem.8b00326] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Large-area and flexible amorphous photonic crystals (APCs) featuring interconnected network microstructures are fabricated using high-molecular-weight polystyrene- block-poly(methyl methacrylate) (PS-PMMA) block copolymers. Kinetically controlled microphase separation combining with synergistic weak incompatibility gives rise to short-range-order network microstructures, exhibiting noniridescent optical properties. Solubility-dependent solvatochromism with distinct responses to various organic solvent vapors is observed in the network-forming APC film. By taking advantage of photodegradation of the PMMA block, nanoporous network-forming films were prepared for subsequent template synthesis of robust SiO2- and TiO2-based APC films through sol-gel reaction. Consequently, refractive index contrast of the APC film was able to be manipulated, resulting in intensely enhanced reflectivity and increased response rate for detecting solvent vapor. With the integration of self-assembly and photolithography approaches, flexible and robust network-forming APC films with well-defined photopatterned textures are carried out. This can provide a novel means for the design of photopatterned organic or inorganic APC films for sensing solvent vapors.
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Affiliation(s)
- Cheng-Sian Wu
- Department of Materials and Optoelectronic Science , National Sun Yat-Sen University , Kaohsiung 80424 , Taiwan
| | - Po-Yu Tsai
- Department of Materials and Optoelectronic Science , National Sun Yat-Sen University , Kaohsiung 80424 , Taiwan
| | - Teng-Yi Wang
- Department of Materials and Optoelectronic Science , National Sun Yat-Sen University , Kaohsiung 80424 , Taiwan
| | - En-Li Lin
- Department of Materials and Optoelectronic Science , National Sun Yat-Sen University , Kaohsiung 80424 , Taiwan
| | - Yen-Chang Huang
- Department of Materials and Optoelectronic Science , National Sun Yat-Sen University , Kaohsiung 80424 , Taiwan
| | - Yeo-Wan Chiang
- Department of Materials and Optoelectronic Science , National Sun Yat-Sen University , Kaohsiung 80424 , Taiwan
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8
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Noro A, Tomita Y, Matsushita Y, Thomas EL. Enthalpy-Driven Swelling of Photonic Block Polymer Films. Macromolecules 2016. [DOI: 10.1021/acs.macromol.6b01867] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Atsushi Noro
- Department
of Applied Chemistry, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
| | - Yusuke Tomita
- Department
of Applied Chemistry, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
| | - Yushu Matsushita
- Department
of Applied Chemistry, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
| | - Edwin L. Thomas
- Department
of Materials Science and Nanoengineering, Rice University, Houston, Texas 77251, United States
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9
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Ohisa S, Pu YJ, Yamada NL, Matsuba G, Kido J. Molecular Interdiffusion between Stacked Layers by Solution and Thermal Annealing Processes in Organic Light Emitting Devices. ACS APPLIED MATERIALS & INTERFACES 2015; 7:20779-20785. [PMID: 26331696 DOI: 10.1021/acsami.5b05818] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
In organic light emitting devices (OLEDs), interfacial structures between multilayers have large impacts on the characteristics of OLEDs. Herein, we succeeded in revealing the interdiffusion in solution processed and thermal annealed OLEDs by neutron reflectometry. We investigated interfaces between a polymer under layer and small molecules upper layer. The small molecules diffused into the swollen polymer layer during the interfacial formation by the solution process, but the polymer did not diffuse into the small molecules layer. At temperatures close to the glass transition temperatures of the materials, asymmetric molecular diffusion was observed. We elucidated the effects of the interdiffusion on the characteristics of OLEDs. Partially mixing the interface improved the current efficiencies due to suppressed triplet-polaron quenching at the interface. Controlling and understanding the interfacial structures of the miultilayers will be more important to improve the OLED characteristics.
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Affiliation(s)
- Satoru Ohisa
- Department of Organic Device Engineering, Yamagata University , 4-3-16 Johnan, Yonezawa, Yamagata 992-8510, Japan
| | - Yong-Jin Pu
- Department of Organic Device Engineering, Yamagata University , 4-3-16 Johnan, Yonezawa, Yamagata 992-8510, Japan
| | - Norifumi L Yamada
- Institute of Material Structure Science, High-Energy Accelerator Research Organization (KEK) , 203-1 Shirakata, Tokai, Naka 319-1106, Japan
| | - Go Matsuba
- Department of Polymer Science and Engineering, Yamagata University , 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan
| | - Junji Kido
- Department of Organic Device Engineering, Yamagata University , 4-3-16 Johnan, Yonezawa, Yamagata 992-8510, Japan
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10
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Chiang YW, Chou CY, Wu CS, Lin EL, Yoon J, Thomas EL. Large-Area Block Copolymer Photonic Gel Films with Solvent-Evaporation-Induced Red- and Blue-Shift Reflective Bands. Macromolecules 2015. [DOI: 10.1021/acs.macromol.5b00744] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Yeo-Wan Chiang
- Department
of Materials and Optoelectronic Science, Center for Nanoscience and
Nanotechnology, National Sun Yat-Sen University, Kaohsiung 80424, Taiwan
| | - Chung-Yi Chou
- Department
of Materials and Optoelectronic Science, Center for Nanoscience and
Nanotechnology, National Sun Yat-Sen University, Kaohsiung 80424, Taiwan
| | - Cheng-Sian Wu
- Department
of Materials and Optoelectronic Science, Center for Nanoscience and
Nanotechnology, National Sun Yat-Sen University, Kaohsiung 80424, Taiwan
| | - En-Li Lin
- Department
of Materials and Optoelectronic Science, Center for Nanoscience and
Nanotechnology, National Sun Yat-Sen University, Kaohsiung 80424, Taiwan
| | - Jongseung Yoon
- Department
of Materials Science, University of Southern California, Los Angeles, California 90007, United States
| | - Edwin L. Thomas
- Department
of Materials Science and NanoEngineering, Rice University, Houston, Texas 77005, United States
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Yue Y, Gong JP. Tunable one-dimensional photonic crystals from soft materials. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY C-PHOTOCHEMISTRY REVIEWS 2015. [DOI: 10.1016/j.jphotochemrev.2015.05.001] [Citation(s) in RCA: 58] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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