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Smart polymer inverse-opal photonic crystal films by melt-shear organization for hybrid core–shell architectures

Schäfer, C. G. and Winter, T. and Heidt, S. and Dietz, C. and Ding, T. and Baumberg, J. J. and Gallei, M. (2015):
Smart polymer inverse-opal photonic crystal films by melt-shear organization for hybrid core–shell architectures.
In: J. Mater. Chem. C, RSC Publishing, pp. 2204-2214, 3, (10), ISSN 2050-7526, [Online-Edition: http://dx.doi.org/10.1039/C4TC02788D],
[Article]

Abstract

A feasible strategy to achieve large-area mechano-, thermo- and solvatochromic hybrid opal (OPC) and inverse opal photonic crystal (IOPC) films based on polymer hydrogels is described. Silica core particles featuring surface-anchored stimuli-responsive polymers are prepared and advantageously used for the melt-shear organization technique. By this approach hybrid OPC films with adjustable periodicities for photonic applications can be prepared. The large-area OPC films can be furthermore converted into IOPC structures simply by etching the silica particles while maintaining the excellent order of the entire opal film. This herein developed new process seems to be universal and is successfully applied to two thermo-responsive polymers, poly(N-isopropylacrylamide) (PNIPAM) and poly(diethylene glycol methylether methacrylate) (PDEGMEMA) as particle shell materials. Besides the remarkable mechanical robustness of the hybrid OPC and IOPC films, optical properties upon changes of temperature, mechanical stress and different solvents as external triggers are successfully confirmed. The herein described novel strategy for the preparation of inorganic/organic OPC and IOPC polymer films is feasible for a wide range of applications in fields of sensing and photonic band gap materials.

Item Type: Article
Erschienen: 2015
Creators: Schäfer, C. G. and Winter, T. and Heidt, S. and Dietz, C. and Ding, T. and Baumberg, J. J. and Gallei, M.
Title: Smart polymer inverse-opal photonic crystal films by melt-shear organization for hybrid core–shell architectures
Language: English
Abstract:

A feasible strategy to achieve large-area mechano-, thermo- and solvatochromic hybrid opal (OPC) and inverse opal photonic crystal (IOPC) films based on polymer hydrogels is described. Silica core particles featuring surface-anchored stimuli-responsive polymers are prepared and advantageously used for the melt-shear organization technique. By this approach hybrid OPC films with adjustable periodicities for photonic applications can be prepared. The large-area OPC films can be furthermore converted into IOPC structures simply by etching the silica particles while maintaining the excellent order of the entire opal film. This herein developed new process seems to be universal and is successfully applied to two thermo-responsive polymers, poly(N-isopropylacrylamide) (PNIPAM) and poly(diethylene glycol methylether methacrylate) (PDEGMEMA) as particle shell materials. Besides the remarkable mechanical robustness of the hybrid OPC and IOPC films, optical properties upon changes of temperature, mechanical stress and different solvents as external triggers are successfully confirmed. The herein described novel strategy for the preparation of inorganic/organic OPC and IOPC polymer films is feasible for a wide range of applications in fields of sensing and photonic band gap materials.

Journal or Publication Title: J. Mater. Chem. C
Volume: 3
Number: 10
Publisher: RSC Publishing
Divisions: 11 Department of Materials and Earth Sciences > Material Science > Physics of Surfaces
07 Department of Chemistry > Fachgebiet Makromolekulare Chemie
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences
07 Department of Chemistry
Zentrale Einrichtungen
Exzellenzinitiative
Exzellenzinitiative > Clusters of Excellence
Profile Areas > Thermo-Fluids & Interfaces
Profile Areas
Date Deposited: 02 Jul 2015 09:31
Official URL: http://dx.doi.org/10.1039/C4TC02788D
Identification Number: doi:10.1039/C4TC02788D
Funders: The authors want to thank the Landesoffensive zur Entwicklung Wissenschaftlich-ökonomischer Exzellenz (LOEWE Soft Control), UK EPSRC EP/L027151/1, and ERC LINASS 320503 for ongoing financial support of this work.
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