Vertical Cylinder-to-Lamella Transition in Thin Block Copolymer Films Induced by In-Plane Electric Field

Morphological transition between hexagonal and lamellar patterns in thin polystyrene–<i>block</i>–poly(4-vinyl pyridine) films simultaneously exposed to a strong in-plane electric field and saturated solvent vapor is studied with atomic force and scanning electron microscopy. In these co...

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Autores principales:	Alexey S. Merekalov, Yaroslav I. Derikov, Vladimir V. Artemov, Alexander A. Ezhov, Yaroslav V. Kudryavtsev
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	block copolymers microphase separation electric field solvent vapor atomic force microscopy Organic chemistry QD241-441
Acceso en línea:	https://doaj.org/article/870855a4a8e74dc5b723c0efe4f127fe
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spelling	oai:doaj.org-article:870855a4a8e74dc5b723c0efe4f127fe2021-11-25T18:48:46ZVertical Cylinder-to-Lamella Transition in Thin Block Copolymer Films Induced by In-Plane Electric Field10.3390/polym132239592073-4360https://doaj.org/article/870855a4a8e74dc5b723c0efe4f127fe2021-11-01T00:00:00Zhttps://www.mdpi.com/2073-4360/13/22/3959https://doaj.org/toc/2073-4360Morphological transition between hexagonal and lamellar patterns in thin polystyrene–<i>block</i>–poly(4-vinyl pyridine) films simultaneously exposed to a strong in-plane electric field and saturated solvent vapor is studied with atomic force and scanning electron microscopy. In these conditions, standing cylinders made of 4-vinyl pyridine blocks arrange into threads up to tens of microns long along the field direction and then partially merge into standing lamellas. In the course of rearrangement, the copolymer remains strongly segregated, with the minor component domains keeping connectivity between the film surfaces. The ordering tendency becomes more pronounced if the cylinders are doped with Au nanorods, which can increase their dielectric permittivity. Non-selective chloroform vapor works particularly well, though it causes partial etching of the indium tin oxide cathode. On the contrary, 1,4-dioxane vapor selective to polystyrene matrix does not allow for any morphological changes.Alexey S. MerekalovYaroslav I. DerikovVladimir V. ArtemovAlexander A. EzhovYaroslav V. KudryavtsevMDPI AGarticleblock copolymersmicrophase separationelectric fieldsolvent vaporatomic force microscopyOrganic chemistryQD241-441ENPolymers, Vol 13, Iss 3959, p 3959 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	block copolymers microphase separation electric field solvent vapor atomic force microscopy Organic chemistry QD241-441
spellingShingle	block copolymers microphase separation electric field solvent vapor atomic force microscopy Organic chemistry QD241-441 Alexey S. Merekalov Yaroslav I. Derikov Vladimir V. Artemov Alexander A. Ezhov Yaroslav V. Kudryavtsev Vertical Cylinder-to-Lamella Transition in Thin Block Copolymer Films Induced by In-Plane Electric Field
description	Morphological transition between hexagonal and lamellar patterns in thin polystyrene–<i>block</i>–poly(4-vinyl pyridine) films simultaneously exposed to a strong in-plane electric field and saturated solvent vapor is studied with atomic force and scanning electron microscopy. In these conditions, standing cylinders made of 4-vinyl pyridine blocks arrange into threads up to tens of microns long along the field direction and then partially merge into standing lamellas. In the course of rearrangement, the copolymer remains strongly segregated, with the minor component domains keeping connectivity between the film surfaces. The ordering tendency becomes more pronounced if the cylinders are doped with Au nanorods, which can increase their dielectric permittivity. Non-selective chloroform vapor works particularly well, though it causes partial etching of the indium tin oxide cathode. On the contrary, 1,4-dioxane vapor selective to polystyrene matrix does not allow for any morphological changes.
format	article
author	Alexey S. Merekalov Yaroslav I. Derikov Vladimir V. Artemov Alexander A. Ezhov Yaroslav V. Kudryavtsev
author_facet	Alexey S. Merekalov Yaroslav I. Derikov Vladimir V. Artemov Alexander A. Ezhov Yaroslav V. Kudryavtsev
author_sort	Alexey S. Merekalov
title	Vertical Cylinder-to-Lamella Transition in Thin Block Copolymer Films Induced by In-Plane Electric Field
title_short	Vertical Cylinder-to-Lamella Transition in Thin Block Copolymer Films Induced by In-Plane Electric Field
title_full	Vertical Cylinder-to-Lamella Transition in Thin Block Copolymer Films Induced by In-Plane Electric Field
title_fullStr	Vertical Cylinder-to-Lamella Transition in Thin Block Copolymer Films Induced by In-Plane Electric Field
title_full_unstemmed	Vertical Cylinder-to-Lamella Transition in Thin Block Copolymer Films Induced by In-Plane Electric Field
title_sort	vertical cylinder-to-lamella transition in thin block copolymer films induced by in-plane electric field
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/870855a4a8e74dc5b723c0efe4f127fe
work_keys_str_mv	AT alexeysmerekalov verticalcylindertolamellatransitioninthinblockcopolymerfilmsinducedbyinplaneelectricfield AT yaroslaviderikov verticalcylindertolamellatransitioninthinblockcopolymerfilmsinducedbyinplaneelectricfield AT vladimirvartemov verticalcylindertolamellatransitioninthinblockcopolymerfilmsinducedbyinplaneelectricfield AT alexanderaezhov verticalcylindertolamellatransitioninthinblockcopolymerfilmsinducedbyinplaneelectricfield AT yaroslavvkudryavtsev verticalcylindertolamellatransitioninthinblockcopolymerfilmsinducedbyinplaneelectricfield
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Vertical Cylinder-to-Lamella Transition in Thin Block Copolymer Films Induced by In-Plane Electric Field

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