Please use this identifier to cite or link to this item: doi:10.22028/D291-33186
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Title: Dye‐Loaded Mechanochromic and pH‐Responsive Elastomeric Opal Films
Author(s): Winter, Tamara
Boehm, Anna
Presser, Volker
Gallei, Markus
Language: English
Title: Macromolecular rapid communications : publishing the newsletters of the European Polymer Federation
Volume: 42
Issue: 1
Publisher/Platform: Wiley
Year of Publication: 2021
Publikation type: Journal Article
Abstract: In this work, the preparation and fabrication of elastomeric opal films revealing reversible mechanochromic and pH-responsive features are reported. The core-interlayer-shell (CIS) particles are synthesized via stepwise emulsion polymerization leading to hard core (polystyrene), crosslinked interlayer (poly(methyl methacrylate-co-allyl methacrylate), and soft poly(ethyl acrylate-co-butyl acrylate-co-(2-hydroxyethyl) methacrylate) shell particles featuring a size of 294.9 ± 14.8 nm. This particle architecture enables the application of the melt-shear organization technique leading to elastomeric opal films with orange, respectively, green brilliant reflection colors dependent on the angle of view. Moreover, the hydroxyl moieties as part of the particle shell are advantageously used for subsequent thermally induced crosslinking reactions enabling the preparation of reversibly tunable mechanochromic structural colors based on Bragg's law of diffraction. Additionally, the CIS particles can be loaded upon extrusion or chemically by a postfunctionalization strategy with organic dyes implying pH-responsive features. This convenient protocol for preparing multi-responsive, reversibly stretch-tunable opal films is expected to enable a new material family for anti-counterfeiting applications based on external triggers.
DOI of the first publication: 10.1002/marc.202000557
URL of the first publication:
Link to this record: hdl:20.500.11880/30530
ISSN: 1521-3927
Date of registration: 2-Feb-2021
Faculty: NT - Naturwissenschaftlich- Technische Fakultät
Department: NT - Chemie
NT - Materialwissenschaft und Werkstofftechnik
Professorship: NT - Prof. Dr. Markus Gallei
NT - Prof. Dr. Volker Presser
Collections:Die Universitätsbibliographie

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