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Dye‐loaded mechanochromic and pH‐responsive elastomeric opal films

Winter, Tamara ; Boehm, Anna ; Presser, Volker ; Gallei, Markus (2021)
Dye‐loaded mechanochromic and pH‐responsive elastomeric opal films.
In: Macromolecular Rapid Communications, 42 (1)
doi: 10.1002/marc.202000557
Article, Bibliographie

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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.

Item Type: Article
Erschienen: 2021
Creators: Winter, Tamara ; Boehm, Anna ; Presser, Volker ; Gallei, Markus
Type of entry: Bibliographie
Title: Dye‐loaded mechanochromic and pH‐responsive elastomeric opal films
Language: English
Date: 2021
Place of Publication: Weinheim
Publisher: Wiley-VCH
Journal or Publication Title: Macromolecular Rapid Communications
Volume of the journal: 42
Issue Number: 1
Collation: 7 Seiten
DOI: 10.1002/marc.202000557
Corresponding Links:
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.

Uncontrolled Keywords: elastomeric opals, functional polymers, photonic crystals, self‐assembly, stimuli‐responsive materials
Identification Number: Artikel-ID: 2000557
Additional Information:

Special Issue: Mechanochromic Polymers

Classification DDC: 500 Science and mathematics > 540 Chemistry
Divisions: 07 Department of Chemistry
07 Department of Chemistry > Ernst-Berl-Institut
07 Department of Chemistry > Ernst-Berl-Institut > Fachgebiet Makromolekulare Chemie
Date Deposited: 31 Jan 2024 07:35
Last Modified: 31 Jan 2024 07:35
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