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Issue 10, 2015
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Smart polymer inverse-opal photonic crystal films by melt-shear organization for hybrid core–shell architectures

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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.

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

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Publication details

The article was received on 04 Dec 2014, accepted on 16 Jan 2015 and first published on 16 Jan 2015


Article type: Paper
DOI: 10.1039/C4TC02788D
Citation: J. Mater. Chem. C, 2015,3, 2204-2214
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    Smart polymer inverse-opal photonic crystal films by melt-shear organization for hybrid core–shell architectures

    C. G. Schäfer, T. Winter, S. Heidt, C. Dietz, T. Ding, J. J. Baumberg and M. Gallei, J. Mater. Chem. C, 2015, 3, 2204
    DOI: 10.1039/C4TC02788D

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