Photonic Particles Made by the Confined Self‐Assembly of a Supramolecular Comb‐Like Block Copolymer
DOKPE
- Moriceau, Guillaume Adolphe Merkle Institute, University of Fribourg
- Kilchoer, Cédric Adolphe Merkle Institute, University of Fribourg
- Djeghdi, Kenza Adolphe Merkle Institute, University of Fribourg
- Weder, Christoph Adolphe Merkle Institute, University of Fribourg
- Steiner, Ullrich Adolphe Merkle Institute, University of Fribourg
- Wilts, Bodo D. Adolphe Merkle Institute, University of Fribourg
- Gunkel, Ilja Adolphe Merkle Institute, University of Fribourg
- 2021
Published in:
- Macromolecular Rapid Communications. - Wiley. - 2021, vol. 42, no. 24, p. 2100522
Materials Chemistry
Polymers and Plastics
Organic Chemistry
3D confined self-assembly
photonic particles
structural colors
supramolecular comb-like block copolymers
English
Approaches that enable the preparation of robust polymericphotonic particles are of interest for the development of nonfading and highlyreflective pigments for applications such as paints and display technologies.Here, the preparation of photonic particles that display structural color inboth, aqueous suspension and the dry solid state is reported. This is achievedby exploiting the confined self-assembly of a supramolecular comb-likeblock copolymer (BCP) that microphase separates into a well-ordered lamellarmorphology with dimensions that promote a photonic bandgap in the visiblerange. The comb-like BCP is formed by robust ionic interactions betweenpoly(styrene-b-4-vinyl-pyridine) (PS-b-P4VP) BCP and dodecylbenzene sulfonicacid (DBSA), which selectively interacts with P4VP blocks. The components arecombined in chloroform, and an aqueous emulsion is prepared. Evaporationof the organic solvent leads to the formation of solid microparticles with an onion-like 3D morphology. These photonic pigments display brilliantcolors with reflectance spectra featuring pronounced optical bandgaps across the entire visible wavelength range with a peak reflectivity of 80–90%.
- Faculty
- Faculté des sciences et de médecine
- Department
- AMI - Physique de la matière molle, AMI - Chimie des polymères et matériaux
- Language
-
- English
- Classification
- Physics
- License
- CC BY
- Open access status
- hybrid
- Identifiers
-
- DOI 10.1002/marc.202100522
- ISSN 1022-1336
- Persistent URL
- https://folia.unifr.ch/unifr/documents/319834
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