Stimuli-Responsive Langmuir Films Composed of Nanoparticles Decorated with Poly(N-isopropyl acrylamide) (PNIPAM) at the Air/Water Interface

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dc.contributor.authorZbonikowski, Rafał
dc.contributor.authorIwan, Michalina
dc.contributor.authorPaczesny, Jan
dc.contributor.organizationInstytut Chemii Fizycznej Polskiej Akademii Nauken
dc.date.accessioned2023-12-13T16:35:06Z
dc.date.available2023-12-13T16:35:06Z
dc.date.issued2023-05-31
dc.description.abstractThe nanotechnology shift from static toward stimuli-responsive systems is gaining momentum. We study adaptive and responsive Langmuir films at the air/water interface to facilitate the creation of two-dimensional (2D) complex systems. We verify the possibility of controlling the assembly of relatively large entities, i.e., nanoparticles with diameter around 90 nm, by inducing conformational changes within an about 5 nm poly(N-isopropylacrylamide)(PNIPAM) capping layer. The system performs reversible switching between uniform and nonuniform states. The densely packed and uniform state is observed at a higher temperature, i.e., opposite to most phase transitions, where more ordered phases appear at lower temperatures. The induced nanoparticles’ conformational changes result in different properties of the interfacial monolayer, including various types of aggregation. The analysis of surface pressure at different temperatures and upon temperature changes, surface potential measurements, surface rheology experiments, Brewster angle microscopy (BAM), and scanning electron microscopy (SEM) observations are accompanied by calculations to discuss the principles of the nanoparticles’ self-assembly. Those findings provide guidelines for designing other adaptive 2D systems, such as programable membranes or optical interfacial devices.en
dc.description.sponsorshipNarodowe Centrum Nauki
dc.identifier.citationACS Omega 2023, 8, 26, 23706–23719. https://doi.org/10.1021/acsomega.3c01862en
dc.identifier.doi10.1021/acsomega.3c01862
dc.identifier.issn2470-1343
dc.identifier.urihttps://open.icm.edu.pl/handle/123456789/23372
dc.language.isoen
dc.publisherAmerican Chemical Societyen
dc.relationOPUS 2019/35/B/ST5/03229en
dc.rightsUznanie autorstwa 4.0 Międzynarodowe*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.titleStimuli-Responsive Langmuir Films Composed of Nanoparticles Decorated with Poly(N-isopropyl acrylamide) (PNIPAM) at the Air/Water Interfaceen
dc.typearticleen
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