1
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Masud A, Wu W, Singh M, Tonny W, Ammar A, Sharma K, Strzalka JW, Terlier T, Douglas JF, Karim A. Solvent Processing and Ionic Liquid-Enabled Long-Range Vertical Ordering in Block Copolymer Films with Enhanced Film Stability. Macromolecules 2021. [DOI: 10.1021/acs.macromol.1c01305] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Ali Masud
- Department of Chemical and Biomolecular Engineering, University of Houston, Houston, Texas 77204, United States
| | - Wenjie Wu
- Department of Chemical and Biomolecular Engineering, University of Houston, Houston, Texas 77204, United States
| | - Maninderjeet Singh
- Department of Chemical and Biomolecular Engineering, University of Houston, Houston, Texas 77204, United States
| | - Wafa Tonny
- Department of Chemical and Biomolecular Engineering, University of Houston, Houston, Texas 77204, United States
| | - Ali Ammar
- Department of Chemical and Biomolecular Engineering, University of Houston, Houston, Texas 77204, United States
| | - Kshitij Sharma
- Department of Chemical and Biomolecular Engineering, University of Houston, Houston, Texas 77204, United States
| | - Joseph W. Strzalka
- X-Ray Science Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Tanguy Terlier
- Shared Equipment Authority, Rice University, 6100 Main Street, Houston, Texas 77005, United States
| | - Jack F. Douglas
- Materials Engineering Laboratory, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, United States
| | - Alamgir Karim
- Department of Chemical and Biomolecular Engineering, University of Houston, Houston, Texas 77204, United States
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2
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Gutiérrez González J, Fernández Leyes MD, Ritacco HA, Schroeder WF, Zucchi IA. Long PEO-based nanoribbons generated in a polystyrene matrix through reaction-induced microphase separation followed by a fast crystallization process. SOFT MATTER 2021; 17:2279-2289. [PMID: 33475128 DOI: 10.1039/d0sm02058c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
A dispersion of elongated nanostructures with a high aspect ratio in polymer matrices has been reported to provide a material with valuable properties such as mechanical strength, barrier effect and shape memory, among others. In this study, we show the procedure to achieve a distribution of elongated crystalline nanodomains in a PS matrix employing the self-assembly of amphiphilic block copolymers (BCP). The selected BCP was polystyrene-block-polyethylene oxide (PS-b-PEO). It was dissolved at 10 wt% in a styrene (St) monomer and the blend was slowly photopolymerized over four days at room temperature, until the reaction was arrested by vitrification. This blend was initially homogeneous and nanostructuration took place in an early stage of the polymerization as a result of the microphase separation (MS) of PEO blocks. Due to its high tendency to crystallize, demixed PEO blocks crystallized almost concomitantly with MS triggering the growing of the nanostructures. Thus, the time window between the onset of crystallization and the vitrification of the matrix was almost four days, allowing all micelles to have the opportunity to couple to a growing nanostructure. As a result, a population of nanoribbons with average lengths surpassing 10 μm dispersed in a PS matrix was obtained. It was demonstrated that these ribbon-like nanostructures are preserved as long as the heating temperature is located below the Tg of the matrix. If the material is heated above this temperature, softening of the matrix allows the breakup of the molten PEO nanoribbons due to Plateau-Rayleigh instability.
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Affiliation(s)
- Jessica Gutiérrez González
- Institute of Materials Science and Technology (INTEMA), University of Mar del Plata and National Research Council (CONICET), Av. Cristóbal Colón 10850, B7606WV Mar del Plata, Argentina.
| | - Marcos D Fernández Leyes
- Departamento de Física, Universidad Nacional del Sur (UNS), Instituto de Física del Sur - IFISUR (UNS-CONICET), Bahía Blanca, Argentina
| | - Hernán A Ritacco
- Departamento de Física, Universidad Nacional del Sur (UNS), Instituto de Física del Sur - IFISUR (UNS-CONICET), Bahía Blanca, Argentina
| | - Walter F Schroeder
- Institute of Materials Science and Technology (INTEMA), University of Mar del Plata and National Research Council (CONICET), Av. Cristóbal Colón 10850, B7606WV Mar del Plata, Argentina.
| | - Ileana A Zucchi
- Institute of Materials Science and Technology (INTEMA), University of Mar del Plata and National Research Council (CONICET), Av. Cristóbal Colón 10850, B7606WV Mar del Plata, Argentina.
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3
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Spiridon MC, Demazy N, Brochon C, Cloutet E, Hadziioannou G, Aissou K, Fleury G. Optical Alignment of Si-Containing Nanodomains Formed by Photoresponsive Amorphous Block Copolymer Thin Films. Macromolecules 2020. [DOI: 10.1021/acs.macromol.9b01551] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | - Nils Demazy
- Univ. Bordeaux, CNRS, Bordeaux INP, LCPO, UMR 5629, F-33600 Pessac, France
| | - Cyril Brochon
- Univ. Bordeaux, CNRS, Bordeaux INP, LCPO, UMR 5629, F-33600 Pessac, France
| | - Eric Cloutet
- Univ. Bordeaux, CNRS, Bordeaux INP, LCPO, UMR 5629, F-33600 Pessac, France
| | | | - Karim Aissou
- Univ. Bordeaux, CNRS, Bordeaux INP, LCPO, UMR 5629, F-33600 Pessac, France
| | - Guillaume Fleury
- Univ. Bordeaux, CNRS, Bordeaux INP, LCPO, UMR 5629, F-33600 Pessac, France
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4
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Yiu SC, Nunns A, Ho CL, Ngai JHL, Meng Z, Li G, Gwyther J, Whittell GR, Manners I, Wong WY. Nanostructured Bimetallic Block Copolymers as Precursors to Magnetic FePt Nanoparticles. Macromolecules 2019. [DOI: 10.1021/acs.macromol.9b00088] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Sze-Chun Yiu
- School of Chemistry, University of Bristol, BS8 1TS Bristol, U.K
- Institute of Molecular Functional Materials and Department of Chemistry, Hong Kong Baptist University, Waterloo Road, Kowloon Tong, Hong Kong, P. R. China
- HKBU Institute of Research and Continuing Education, Shenzhen Virtual University Park, Shenzhen 518057, P. R. China
| | - Adam Nunns
- School of Chemistry, University of Bristol, BS8 1TS Bristol, U.K
| | - Cheuk-Lam Ho
- Institute of Molecular Functional Materials and Department of Chemistry, Hong Kong Baptist University, Waterloo Road, Kowloon Tong, Hong Kong, P. R. China
- HKBU Institute of Research and Continuing Education, Shenzhen Virtual University Park, Shenzhen 518057, P. R. China
| | - Jenner Ho-Loong Ngai
- Institute of Molecular Functional Materials and Department of Chemistry, Hong Kong Baptist University, Waterloo Road, Kowloon Tong, Hong Kong, P. R. China
- HKBU Institute of Research and Continuing Education, Shenzhen Virtual University Park, Shenzhen 518057, P. R. China
| | - Zhengong Meng
- Institute of Molecular Functional Materials and Department of Chemistry, Hong Kong Baptist University, Waterloo Road, Kowloon Tong, Hong Kong, P. R. China
- HKBU Institute of Research and Continuing Education, Shenzhen Virtual University Park, Shenzhen 518057, P. R. China
| | | | - Jessica Gwyther
- School of Chemistry, University of Bristol, BS8 1TS Bristol, U.K
| | | | - Ian Manners
- School of Chemistry, University of Bristol, BS8 1TS Bristol, U.K
- Department of Chemistry, University of Victoria, Victoria, British Columbia V8W 3V6, Canada
| | - Wai-Yeung Wong
- Institute of Molecular Functional Materials and Department of Chemistry, Hong Kong Baptist University, Waterloo Road, Kowloon Tong, Hong Kong, P. R. China
- HKBU Institute of Research and Continuing Education, Shenzhen Virtual University Park, Shenzhen 518057, P. R. China
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5
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Górka W, Kuciel T, Nalepa P, Lachowicz D, Zapotoczny S, Szuwarzyński M. Homogeneous Embedding of Magnetic Nanoparticles into Polymer Brushes during Simultaneous Surface-Initiated Polymerization. NANOMATERIALS (BASEL, SWITZERLAND) 2019; 9:E456. [PMID: 30893829 PMCID: PMC6474101 DOI: 10.3390/nano9030456] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Revised: 03/14/2019] [Accepted: 03/15/2019] [Indexed: 11/17/2022]
Abstract
Here we present a facile and efficient method of controlled embedding of inorganic nanoparticles into an ultra-thin (<15 nm) and flat (~1.0 nm) polymeric coating that prevents unwanted aggregation. Hybrid polymer brushes-based films were obtained by simultaneous incorporation of superparamagnetic iron oxide nanoparticles (SPIONs) with diameters of 8⁻10 nm into a polycationic macromolecular matrix during the surface initiated atom transfer radical polymerization (SI-ATRP) reaction in an ultrasonic reactor. The proposed structures characterized with homogeneous distribution of separated nanoparticles that maintain nanometric thickness and strong magnetic properties are a good alternative for commonly used layers of crosslinked nanoparticles aggregates or bulk structures. Obtained coatings were characterized using atomic force microscopy (AFM) working in the magnetic mode, secondary ion mass spectrometry (SIMS), and X-ray photoelectron spectroscopy (XPS).
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Affiliation(s)
- Weronika Górka
- Faculty of Physics, Jagiellonian University, Astronomy and Applied Computer Science, S. Łojasiewicza 11, 30-348 Krakow, Poland.
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Krakow, Poland.
| | - Tomasz Kuciel
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Krakow, Poland.
| | - Paula Nalepa
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Krakow, Poland.
| | - Dorota Lachowicz
- Academic Centre for Materials and Nanotechnology, AGH University of Science and Technology, A. Mickiewicza 30, 30-059 Krakow, Poland.
| | - Szczepan Zapotoczny
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Krakow, Poland.
| | - Michał Szuwarzyński
- Academic Centre for Materials and Nanotechnology, AGH University of Science and Technology, A. Mickiewicza 30, 30-059 Krakow, Poland.
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6
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Alvarez-Fernandez A, Aissou K, Pécastaings G, Hadziioannou G, Fleury G, Ponsinet V. High refractive index in low metal content nanoplasmonic surfaces from self-assembled block copolymer thin films. NANOSCALE ADVANCES 2019; 1:849-857. [PMID: 36132249 PMCID: PMC9473184 DOI: 10.1039/c8na00239h] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2018] [Accepted: 11/21/2018] [Indexed: 05/15/2023]
Abstract
Materials with a high and tunable refractive index are attractive for nanophotonic applications. In this contribution, we propose a straightforward fabrication technique of high-refractive index surfaces based on self-assembled nanostructured block copolymer thin films. The selective and customizable metal incorporation within out-of-plane polymer lamellae produces azimuthally isotropic metallic nanostructures of defined geometries, which were analysed using microscopy and small-angle X-ray scattering techniques. Variable-angle spectroscopic ellipsometry was used to relate the geometrical parameters of the metallic features and the resulting refractive index of the patterned surfaces. In particular, nanostructured gold patterns with a high degree of homogeneity and a gold content as low as 16 vol% reach a refractive index value of more than 3 in the visible domain. Our study thus demonstrates a new route for the preparation of high refractive index surfaces with a low metal content for optical applications.
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Affiliation(s)
- Alberto Alvarez-Fernandez
- Laboratoire de Chimie des Polymères Organiques (LCPO), CNRS UMR 5629, ENSCPB, Université de Bordeaux 16 Avenue Pey-Berland F-33607 Pessac Cedex France
- Univ. Bordeaux, CNRS, Centre de Recherche Paul Pascal (CRPP) UMR 5031 33600 Pessac France
| | - Karim Aissou
- Laboratoire de Chimie des Polymères Organiques (LCPO), CNRS UMR 5629, ENSCPB, Université de Bordeaux 16 Avenue Pey-Berland F-33607 Pessac Cedex France
| | - Gilles Pécastaings
- Laboratoire de Chimie des Polymères Organiques (LCPO), CNRS UMR 5629, ENSCPB, Université de Bordeaux 16 Avenue Pey-Berland F-33607 Pessac Cedex France
| | - Georges Hadziioannou
- Laboratoire de Chimie des Polymères Organiques (LCPO), CNRS UMR 5629, ENSCPB, Université de Bordeaux 16 Avenue Pey-Berland F-33607 Pessac Cedex France
| | - Guillaume Fleury
- Laboratoire de Chimie des Polymères Organiques (LCPO), CNRS UMR 5629, ENSCPB, Université de Bordeaux 16 Avenue Pey-Berland F-33607 Pessac Cedex France
| | - Virginie Ponsinet
- Univ. Bordeaux, CNRS, Centre de Recherche Paul Pascal (CRPP) UMR 5031 33600 Pessac France
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7
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Jayabharathi J, Sundari GA, Thanikachalam V, Jeeva P, Panimozhi S. A dodecanethiol-functionalized Ag nanoparticle-modified ITO anode for efficient performance of organic light-emitting devices. RSC Adv 2017. [DOI: 10.1039/c7ra07080b] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Increment of current efficiency with DT-Ag NPs coated devices was strongly related to energy transfer between radiated light generated from CBP:Ir(mpidmb)2(acac) emissive layer and LSPR excited by DT-Ag NPs layer.
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8
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Huq AF, Kulkarni M, Modi A, Smilgies DM, Al-Enizi AM, Elzatahry A, Raghavan D, Karim A. Vertical orientation of solvent cast nanofilled PS-b-PEO block copolymer thin films at high nanoparticle loading. POLYMER 2016. [DOI: 10.1016/j.polymer.2015.10.049] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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9
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Basly B, Alnasser T, Aissou K, Fleury G, Pecastaings G, Hadziioannou G, Duguet E, Goglio G, Mornet S. Optimization of Magnetic Inks Made of L1(0)-Ordered FePt Nanoparticles and Polystyrene-block-Poly(ethylene oxide) Copolymers. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:6675-6680. [PMID: 26035091 DOI: 10.1021/acs.langmuir.5b00942] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The preparation of magnetic inks stable over time made of L10-ordered FePt nanoparticles, thiol-ended poly(ethylene glycol) methyl ether (mPEO-SH) compatibilizing macromolecules and asymmetric polystyrene-block-poly(ethylene oxide) copolymers (BCP) as a subsequent self-organizing medium was optimized. It was demonstrated that the use of sacrificial MgO shells as physical barriers during the annealing stage for getting the L10-ordered state makes easier and more efficient the anchoring of compatibilizing PEO macromolecules onto the nanoparticles surface. L10-FePt grafted nanoparticles have shown a good colloidal stability and affinity with the PEO domains of the BCP leading to L10-FePt/BCP composite thin layers with individual magnetic dots dispersed in the BCP matrix.
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Affiliation(s)
- Brice Basly
- †CNRS, Université Bordeaux, ICMCB, UPR 9048, F-33600 Pessac, France
| | - Thomas Alnasser
- †CNRS, Université Bordeaux, ICMCB, UPR 9048, F-33600 Pessac, France
| | - Karim Aissou
- ‡Université Bordeaux, CNRS, LCPO, UMR 5629, F-33600 Pessac, France
| | - Guillaume Fleury
- ‡Université Bordeaux, CNRS, LCPO, UMR 5629, F-33600 Pessac, France
| | | | | | - Etienne Duguet
- †CNRS, Université Bordeaux, ICMCB, UPR 9048, F-33600 Pessac, France
| | - Graziella Goglio
- †CNRS, Université Bordeaux, ICMCB, UPR 9048, F-33600 Pessac, France
| | - Stéphane Mornet
- †CNRS, Université Bordeaux, ICMCB, UPR 9048, F-33600 Pessac, France
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10
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Karunakaran M, Nunes SP, Qiu X, Yu H, Peinemann KV. Isoporous PS-b-PEO ultrafiltration membranes via self-assembly and water-induced phase separation. J Memb Sci 2014. [DOI: 10.1016/j.memsci.2013.11.015] [Citation(s) in RCA: 75] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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11
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Aissou K, Nunns A, Manners I, Ross CA. Square and rectangular symmetry tiles from bulk and thin film 3-miktoarm star terpolymers. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2013; 9:4077-4084. [PMID: 23824947 DOI: 10.1002/smll.201300657] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2013] [Indexed: 06/02/2023]
Abstract
The directed self assembly of a 3-miktoarm star terpolymer (polyisoprene-arm-polystyrene-arm-polyferrocenylethylmethylsilane (3μ-ISF)) into a (4.8²) square symmetry Archimedean tiling pattern is described. Bulk samples of 3μ-ISF generate equilibrium columnar (4.8²) tile patterns (symmetry p 4 mm) on annealing, which is preceded by a metastable c 2 mm centered rectangular structure. In contrast, in thin films of 3μ-ISF blended with PS homopolymer, the c 2 mm phase is stable with columns oriented out of plane when the film thickness is below 50 nm. However, the 3μ-ISF/homopolymer blend rapidly forms a p 4 mm symmetry when the film thickness is ∼80 nm, with grain sizes of several μm and excellent order. Defects in the p 4 mm structure are described.
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Affiliation(s)
- Karim Aissou
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
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12
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Zalakain I, Politakos N, Ramos JA, Fernandez R, Etxeberria H, Mondragon I, Corcuera MA, Eceiza A. Synthesis and incorporation of dodecanethiol capped silver nanoparticles into poly(styrene-b-isoprene-b-styrene) block copolymer and their influence in the morphology. Colloids Surf A Physicochem Eng Asp 2013. [DOI: 10.1016/j.colsurfa.2013.06.033] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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13
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Gerasin VA, Antipov EM, Karbushev VV, Kulichikhin VG, Karpacheva GP, Talroze RV, Kudryavtsev YV. New approaches to the development of hybrid nanocomposites: from structural materials to high-tech applications. RUSSIAN CHEMICAL REVIEWS 2013. [DOI: 10.1070/rc2013v082n04abeh004322] [Citation(s) in RCA: 82] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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14
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Wakayama H, Yonekura H, Kawai Y. Three-Dimensional Periodically Ordered Nanohetero Metallic Materials from Self-Assembled Block Copolymer Composites. ACS Macro Lett 2013; 2:284-287. [PMID: 35581751 DOI: 10.1021/mz300634p] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
We report a synthetic route to inorganic nanoheterostructures with tunable size and morphology via self-assembled block copolymer mesophase templates. Two Fe precursors, tricarbonyl(cyclooctatetraene) iron and acetylacetonate iron(III), and one Pt precursor, platinum dimethylcyclooctadiene, were selectively introduced into separate polymer blocks of a block copolymer, polystyrene-b-poly-4-vinylpyridine, and then the block copolymer templates were removed by pyrolysis. Self-assembled inorganic nanoheterostructures (spheres, hexagonal cylinders, and layers of hard magnetic phase FePt in a matrix of soft magnetic phase α-Fe) were produced. The morphology and domain size of the nanoheterostructures could be tailored by controlling the molecular weight and relative block lengths of the block copolymers. The controlled size and morphology of the inorganic nanoheterostructures demonstrate the method's utility for producing highly functional materials.
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Affiliation(s)
- Hiroaki Wakayama
- Toyota Central R&D Laboratories, Inc., Nagakute, Aichi 480-1192, Japan
| | - Hirotaka Yonekura
- Toyota Central R&D Laboratories, Inc., Nagakute, Aichi 480-1192, Japan
| | - Yasuaki Kawai
- Toyota Central R&D Laboratories, Inc., Nagakute, Aichi 480-1192, Japan
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15
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Borah D, Ozmen M, Rasappa S, Shaw MT, Holmes JD, Morris MA. Molecularly functionalized silicon substrates for orientation control of the microphase separation of PS-b-PMMA and PS-b-PDMS block copolymer systems. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:2809-2820. [PMID: 23363319 DOI: 10.1021/la304140q] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The use of block copolymer (BCP) thin films to generate nanostructured surfaces for device and other applications requires precise control of interfacial energies to achieve the desired domain orientation. Usually, the surface chemistry is engineered through the use of homo- or random copolymer brushes grown or attached to the surface. Herein, we demonstrate a facile, rapid, and tunable approach to surface functionalization using a molecular approach based on ethylene glycol attachment to the surface. The effectiveness of the molecular approach is demonstrated for the microphase separation of PS-b-PMMA and PS-b-PDMS BCPs in thin films and the development of nanoscale features at the substrate.
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Affiliation(s)
- Dipu Borah
- Materials Chemistry Section, Department of Chemistry, University College Cork, College Road, Cork, Ireland
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16
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Aissou K, Choi HK, Nunns A, Manners I, Ross CA. Ordered nanoscale Archimedean tilings of a templated 3-miktoarm star terpolymer. NANO LETTERS 2013; 13:835-839. [PMID: 23343324 DOI: 10.1021/nl400006c] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The directed self-assembly of 3-miktoarm star terpolymer chains (polyisoprene-arm-polystyrene-arm-polyferrocenylethylmethylsilane (3 μ-ISF)) into 2D Archimedean tilings is described. A morphological change from (4.8(2)) to (6(3)) tiling is reported in the 3 μ-ISF thin film blended with PS homopolymer when a greater swelling of PI is achieved during the solvent annealing process. Highly oriented (4.8(2)) tilings were produced by templating the self-assembled three colored structures in blended thin films. The use of (4.8(2)) and (6(3)) tilings as nanolithographic masks to transfer square and triangular hole arrays into the substrate is also demonstrated.
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Affiliation(s)
- Karim Aissou
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
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17
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Aissou K, Shaver J, Fleury G, Pécastaings G, Brochon C, Navarro C, Grauby S, Rampnoux JM, Dilhaire S, Hadziioannou G. Nanoscale block copolymer ordering induced by visible interferometric micropatterning: a route towards large scale block copolymer 2D crystals. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2013; 25:213-217. [PMID: 23172715 DOI: 10.1002/adma.201203254] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2012] [Revised: 09/25/2012] [Indexed: 06/01/2023]
Abstract
We have overcome the cost and time consumption limitations of common lithography techniques used to control the self-assembly of block copolymers into highly ordered 2D arrays through the use of a guiding pattern created from a polymeric sub-layer. The guiding pattern is a sinusoidal surface-relief grating interferometrically inscribed onto an azobenzene containing copolymer sub-layer leading to a defect-free single grain of block copolymer domains.
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Affiliation(s)
- Karim Aissou
- Laboratoire de Chimie des Polymères Organiques, Univ. Bordeaux, CNRS, LCPO, UMR 5629, F-33600 Pessac, France
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