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Yu JY, Landis S, Fontaine P, Daillant J, Guenoun P. Oriented thick films of block copolymer made by multiple successive coatings: perforated lamellae versus oriented lamellae. SOFT MATTER 2020; 16:8179-8186. [PMID: 32761014 DOI: 10.1039/d0sm00603c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Building 3D ordered nanostructures by copolymer deposition on a substrate implies a full control beyond the thin film regime. We have used here block copolymers (BCPs) forming bulk lamellar phases to form thick, i.e. much thicker than the lamellar period, structured films on a substrate. Films are formed by a simple method of multiple successive coatings. The film structure is controlled using the combined action of surface templating and annealing time. Sections of the thick layers were characterized by scanning electron microscopy (SEM) after etching of one of the BCP moieties. We show that perfect hexagonally perforated films (HPL) with lamellae parallel to the substrate are formed for a wide thickness range up to 300 nm. Grazing incidence small angle X-ray scattering (GISAXS) confirms such an organization by revealing that perforations sit on a hexagonal lattice. A lamellar organization perpendicular to the substrate is shown to take over for thicker films. A scenario consistent with our observations is proposed, where the sequence of phases results from the balance between surface and stretching energy effects.
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Affiliation(s)
- Jian-Yuan Yu
- Université Paris-Saclay, CEA, CNRS, NIMBE, Lions, 91191, Gif-sur-Yvette, France. and R&D division, Niching Industrial Corp., Chupei City, Hsinchu County, Taiwan
| | - Stefan Landis
- CEA, LETI, Minatec, 17 Rue des Martyrs, F-38054, Grenoble Cedex 9, France
| | - Philippe Fontaine
- Synchrotron SOLEIL, L'Orme des Merisiers, Saint-Aubin, BP 48, F-91192 Gif-sur-Yvette Cedex, France
| | - Jean Daillant
- Synchrotron SOLEIL, L'Orme des Merisiers, Saint-Aubin, BP 48, F-91192 Gif-sur-Yvette Cedex, France
| | - Patrick Guenoun
- Université Paris-Saclay, CEA, CNRS, NIMBE, Lions, 91191, Gif-sur-Yvette, France.
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Álvarez-Fernández A, Valdés-Bango F, Losada-Ambrinos R, Martín JI, Vélez M, Alameda JM, García Alonso FJ. Polymer porous thin films obtained by direct spin coating. POLYM INT 2018. [DOI: 10.1002/pi.5519] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
| | - Fernando Valdés-Bango
- Dpto. Física; Universidad de Oviedo; Oviedo Spain
- CINN (CSIC-Universidad de Oviedo); El Entrego Spain
| | | | - José Ignacio Martín
- Dpto. Física; Universidad de Oviedo; Oviedo Spain
- CINN (CSIC-Universidad de Oviedo); El Entrego Spain
| | - María Vélez
- Dpto. Física; Universidad de Oviedo; Oviedo Spain
- CINN (CSIC-Universidad de Oviedo); El Entrego Spain
| | - José María Alameda
- Dpto. Física; Universidad de Oviedo; Oviedo Spain
- CINN (CSIC-Universidad de Oviedo); El Entrego Spain
| | - Francisco Javier García Alonso
- Dpto. Química Orgánica e Inorgánica; Universidad de Oviedo; Oviedo Spain
- CINN (CSIC-Universidad de Oviedo); El Entrego Spain
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Kim SS, Kang D, Sohn BH. Fabrication of size-controlled nanoring arrays by selective incorporation of ionic liquids in diblock copolymer micellar cores. NANOTECHNOLOGY 2017; 28:225303. [PMID: 28443831 DOI: 10.1088/1361-6528/aa6f81] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
We report the synthesis of arrayed nanorings with tunable physical dimensions from thin films of polystyrene-block-poly(4-vinylpyridine) (PS-P4VP) micelles. For accurate control of the inner and outer diameters of the nanorings, we added imidazolium-based ionic liquids (ILs) into the micellar solution, which were eventually incorporated into the micellar cores. We observed the structural changes of the micellar cores coated on a substrate due to the presence of ILs. The spin-coated micellar cores were treated with an acidic precursor solution and generated toroid nanostructures, of which size depended on the amount of IL loaded into the micelles. We then treated the transformed micellar films with oxygen plasma to produce arrays of various metal and oxide nanorings on a substrate. The spacings and diameters of nanorings were governed by the molecular weight of the PS-P4VP and the amount of IL used. We also demonstrated that arrayed Pt nanorings enabled the fabrication of reduced graphene oxide anti-nanoring arrays via a catalytic tailoring process.
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He LB, Wang YL, Xie X, Han M, Song FQ, Wang BJ, Chen WL, Xu HX, Sun LT. Systematic investigation of the SERS efficiency and SERS hotspots in gas-phase deposited Ag nanoparticle assemblies. Phys Chem Chem Phys 2017; 19:5091-5101. [DOI: 10.1039/c6cp08513j] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Revealing the SERS hotspots and SERS efficiencies of Ag nanoparticle assemblies based on the design of multifarious rainbow-like nanoparticle bands.
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Affiliation(s)
- L. B. He
- SEU-FEI Nano-Pico Centre
- Key Lab of MEMS of Ministry of Education
- Southeast University
- Nanjing 210096
- P. R. China
| | - Y. L. Wang
- SEU-FEI Nano-Pico Centre
- Key Lab of MEMS of Ministry of Education
- Southeast University
- Nanjing 210096
- P. R. China
| | - X. Xie
- SEU-FEI Nano-Pico Centre
- Key Lab of MEMS of Ministry of Education
- Southeast University
- Nanjing 210096
- P. R. China
| | - M. Han
- National Laboratory of Solid State Microstructures
- Nanjing University
- Nanjing 210093
- P. R. China
| | - F. Q. Song
- National Laboratory of Solid State Microstructures
- Nanjing University
- Nanjing 210093
- P. R. China
| | - B. J. Wang
- SEU-FEI Nano-Pico Centre
- Key Lab of MEMS of Ministry of Education
- Southeast University
- Nanjing 210096
- P. R. China
| | - W. L. Chen
- Department of Chemical Engineering
- Monash University
- Victoria 3800
- Australia
| | - H. X. Xu
- Centre for Nanoscience and Nanotechnology
- School of Physics and Technology, and Institute for Advanced Studies
- Wuhan University
- Wuhan 430072
- China
| | - L. T. Sun
- SEU-FEI Nano-Pico Centre
- Key Lab of MEMS of Ministry of Education
- Southeast University
- Nanjing 210096
- P. R. China
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Zhao Q, Leng B, Wu LYL, Wong CC. Fabrication of ordered nanoring arrays via the footprint of a polymer nanosphere monolayer. RSC Adv 2013. [DOI: 10.1039/c3ra41348a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
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Zu X, Gong J, Tu W, Deng Y. Selective and Sequential Re-Assembly of Patterned Block Copolymer Thin Film for Fabricating Polymeric, Inorganic, and Their Composite Nanostructured Arrays. Macromol Rapid Commun 2011; 32:1526-32. [DOI: 10.1002/marc.201100313] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2011] [Revised: 06/09/2011] [Indexed: 02/03/2023]
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Li Z, Liu P, Liu Y, Chen W, Wang G. Fabrication of size-controllable Fe2O3 nanoring array via colloidal lithography. NANOSCALE 2011; 3:2743-2747. [PMID: 21589987 DOI: 10.1039/c1nr10329f] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Tailed-Fe(2)O(3) ring arrays are fabricated by solution-dipping on a colloidal monolayer template. The influence of synthesis parameters on the quality of nanostructures has been investigated. The ring size can be controlled by changing the precursor concentration and varying the annealing time of the polystyrene sphere colloidal monolayer. In addition, the edge of the rings is sensitive to the surface tension of precursor solution, and high quality ordered ring arrays can be obtained by tuning the surface tension. This strategy allows the fabrication of specific metal oxides ring arrays with high quality and uniform morphology.
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Affiliation(s)
- Zhigang Li
- Department of Physics & Electronic Engineering, Taizhou University, Taizhou 318000, People's Republic of China
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