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Enhanced ordering of block copolymer thin films upon addition of magnetic nanoparticles

SYSNO ASEP	0541191
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Enhanced ordering of block copolymer thin films upon addition of magnetic nanoparticles
Author(s)	Konefal, Magdalena (UMCH-V)_{ORCID, RID} Černoch, Peter (UMCH-V)_{RID, ORCID} Patsula, Vitalii (UMCH-V)_{RID, ORCID} Pavlova, Ewa (UMCH-V)_RID Dybal, Jiří (UMCH-V)_{RID, ORCID} Zaleski, K. (PL) Zhigunov, Alexander (UMCH-V)_{RID, ORCID}
Source Title	ACS Applied Materials and Interfaces. - : American Chemical Society - ISSN 1944-8244 Roč. 13, č. 7 (2021), s. 9195-9205
Number of pages	11 s.
Language	eng - English
Country	US - United States
Keywords	magnetite nanoparticles ; thin films ; self-assembly
Subject RIV	CD - Macromolecular Chemistry
OECD category	Polymer science
R&D Projects	GA19-10982S GA ČR - Czech Science Foundation (CSF)
Method of publishing	Limited access
Institutional support	UMCH-V - RVO:61389013
UT WOS	000623228500131
EID SCOPUS	85101573244
DOI	10.1021/acsami.0c21549
Annotation	The influence of magnetite nanoparticles coated with poly(acrylic acid) (Fe3O4@PAA NPs) on the organization of block copolymer thin films via a self-assembly process was investigated. Polystyrene-b-poly(4-vinylpyridine) films were obtained by the dip-coating method and thoroughly examined by X-ray reflectivity, transmission electron microscopy, atomic force microscopy, and grazing incidence small-angle scattering. Magnetic properties of the films were probed via superconducting quantum interference device (SQUID) magnetometry. It was demonstrated that due to the hydrogen bonding between P4VP and PAA, the Fe3O4@PAA NPs segregate selectively inside P4VP domains, enhancing the microphase separation process. This in turn, together with employing carefully optimized dip-coating parameters, results in the formation of hybrid thin films with highly ordered nanostructures. The addition of Fe3O4@PAA nanoparticles does not change the average interdomain spacing in the film lateral nanostructure. Moreover, it was shown that the nanoparticles can easily be removed to obtain well-ordered nanoporous templates.
Workplace	Institute of Macromolecular Chemistry
Contact	Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358
Year of Publishing	2022
Electronic address	https://pubs.acs.org/doi/10.1021/acsami.0c21549

Number of the records: 1