Shear-induced alignment of lamellae in thin films of diblock copolymers

Soft Matter ◽  
2012 ◽  
Vol 8 (30) ◽  
pp. 7803 ◽  
Author(s):  
Alexandros Chremos ◽  
Paul M. Chaikin ◽  
Richard A. Register ◽  
Athanassios Z. Panagiotopoulos
Keyword(s):  
Thin Films ◽  
Diblock Copolymers

Nanoporous Thin Films Formed from Photocleavable Diblock Copolymers on Gold Substrates Modified with Thiolate Self-Assembled Monolayers

Langmuir ◽  
2020 ◽  
Vol 36 (31) ◽  
pp. 9259-9268 ◽  
Author(s):  
Takashi Ito ◽  
Herman Coceancigh ◽  
Yi Yi ◽  
Jay N. Sharma ◽  
Fred C. Parks ◽  
...  
Keyword(s):  
Thin Films ◽  
Diblock Copolymers ◽  
Self Assembled Monolayers ◽  
Gold Substrates ◽  
Assembled Monolayers ◽  
Self Assembled

Array of Fe3O4 Nanoparticles in PS-b-P2VP thin Films

2013 ◽  
Vol 345 ◽  
pp. 193-196
Author(s):  
Xin Kang Gao ◽  
Jun Liu ◽  
Ting Hua Wang ◽  
Xue Li ◽  
Xiao Kai Zhang
Keyword(s):  
Thin Films ◽  
High Temperature ◽  
Composite Film ◽  
Self Assembly ◽  
Spin Coating ◽  
Diblock Copolymers ◽  
Carbon Substrate ◽  
Mixed Solution ◽  
Long Time ◽  
Oriented Parallel

In this study, a method to generate arrays of Fe3O4 nanoparticles (MNPs) via block copolymer (BC) self-assembly was developed. A composite film of polystyrene-block-poly (2-vinylpyridine) (PS-b-P2VP)/MNPs was first prepared by spin-coating the PS-b-P2VP/MNPs mixed solution on a carbon substrate. After the composite film was annealed at high temperature for 2 days, it was found that the modified MNPs could be selectively incorporated into P2VP cylinders in PS-b-P2VP diblock copolymers and the P2VP cylinders were oriented parallel to the substrate. For a long time annealing (10 days), the P2VP cylinders become normal to the substrate and MNPs are located at the interface of P2VP and PS phases.

Shear-induced parallel and transverse alignments of cylinders in thin films of diblock copolymers

Soft Matter ◽  
2018 ◽  
Vol 14 (32) ◽  
pp. 6635-6647 ◽  
Author(s):  
Yulong Chen ◽  
Qian Xu ◽  
Yangfu Jin ◽  
Xin Qian ◽  
Rui Ma ◽  
...  
Keyword(s):  
Thin Films ◽  
Diblock Copolymers ◽  
Underlying Mechanisms

Shear-induced parallel and transverse alignments of cylinders in thin films of diblock copolymers and their underlying mechanisms were studied by simulations.

Nanostructured organic radical cathodes from self-assembled nitroxide-containing block copolymer thin films

2015 ◽  
Vol 3 (38) ◽  
pp. 19575-19581 ◽  
Author(s):  
G. Hauffman ◽  
A. Vlad ◽  
T. Janoschka ◽  
U. S. Schubert ◽  
J.-F. Gohy
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Block Copolymer ◽  
Diblock Copolymers ◽  
Organic Radical ◽  
Nanostructured Thin Film ◽  
Self Assembled

Nanostructured thin film organic radical cathodes have been prepared from poly(styrene)-block-poly(2,2,6,6-tetramethylpiperidinyloxy-4-yl methacrylate) diblock copolymers.

Nanostructure- and Orientation-Controlled Digital Memory Behaviors of Linear-Brush Diblock Copolymers in Nanoscale Thin Films

2014 ◽  
Vol 47 (13) ◽  
pp. 4397-4407 ◽  
Author(s):  
Kyungtae Kim ◽  
Young Yong Kim ◽  
Samdae Park ◽  
Yong-Gi Ko ◽  
Yecheol Rho ◽  
...  
Keyword(s):  
Thin Films ◽  
Diblock Copolymers ◽  
Digital Memory

Functionalized Nanoporous Thin Films from Metallo-Supramolecular Diblock Copolymers

Langmuir ◽  
2012 ◽  
Vol 28 (5) ◽  
pp. 3018-3023 ◽  
Author(s):  
Clément Mugemana ◽  
Jean-François Gohy ◽  
Charles-André Fustin
Keyword(s):  
Thin Films ◽  
Diblock Copolymers

Nanoscale localization of poly(vinylidene fluoride) in the lamellae of thin films of symmetric polystyrene–poly(methyl methacrylate) diblock copolymers

Polymer ◽  
2005 ◽  
Vol 46 (11) ◽  
pp. 3776-3781 ◽  
Author(s):  
Seong Il Yoo ◽  
Sang-Hyun Yun ◽  
Jeong Min Choi ◽  
Byeong-Hyeok Sohn ◽  
Wang-Cheol Zin ◽  
...  
Keyword(s):  
Thin Films ◽  
Methyl Methacrylate ◽  
Diblock Copolymers ◽  
Vinylidene Fluoride ◽  
Poly Methyl Methacrylate ◽  
Poly Vinylidene Fluoride

scholarly journals Thin-film morphologies of block copolymers with nanoparticles

2015 ◽  
Vol 30 (S1) ◽  
pp. S16-S24 ◽  
Author(s):  
Dieter Jehnichen ◽  
Doris Pospiech ◽  
Peter Friedel ◽  
Guping He ◽  
Alessandro Sepe ◽  
...  
Keyword(s):  
Thin Films ◽  
Diblock Copolymers ◽  
Grazing Incidence ◽  
Polymer Surfaces ◽  
Nanostructured Surfaces ◽  
Force Microscopy ◽  
Molar Ratios ◽  
X Ray Scattering ◽  
Atomic Force

Diblock copolymers (BCPs) show phase separation on mesoscopic length scales and form ordered morphologies in both bulk and thin films, the latter resulting in nanostructured surfaces. Morphologies in thin films are strongly influenced by film parameters, the ratio of film thickness and bulk domain spacing. Laterally structured polymer surfaces may serve as templates for controlled assembly of nanoparticles (NPs). We investigated the BCP of poly(n-pentyl methacrylate) and poly(methyl methacrylate) which show bulk morphologies of stacked lamellae or hexagonally packed cylinders. Thin films were investigated by atomic force microscopy and grazing-incidence small-angle X-ray scattering. For film thicknesses f well below dbulk, standing cylinder morphologies were observed in appropriate molar ratios, while film thicknesses around and larger than dbulk resulted in cylinders arranged parallel to surface. To alter and/or improve the morphology also in presence of different NPs (e.g., silica, gold), solvent vapour annealing (SVA) was applied. The BCP morphology usually remains unchanged but periodicities change depending on type and amount of incorporated NPs. It was found that silica clusters enlarge lateral distances of cylinders, whereas Au NPs reduce it. The effect of SVA is weak. The quality of morphology is slightly improved by SVA and lateral distances remain constant or are slightly reduced.

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