Full Color Stop Bands in Hybrid Organic/Inorganic Block Copolymer Photonic Gels by Swelling−Freezing

We report a facile way of fabricating hybrid organic/inorganic photonic gels by selective swelling and subsequent infiltration of SiO2 into one type of lamellar microdomain previously self-assembled from modest-molecular-weight block copolymers. Transparent, in-plane lamellar films were first prepar...

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Bibliographic Details
Published in:Journal of the American Chemical Society 2009-06, Vol.131 (22), p.7538-7539
Main Authors: Kang, Changjoon, Kim, Eunjoo, Baek, Heeyoel, Hwang, Kyosung, Kwak, Dongwoo, Kang, Youngjong, Thomas, Edwin L
Format: Article
Language:English
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Summary:We report a facile way of fabricating hybrid organic/inorganic photonic gels by selective swelling and subsequent infiltration of SiO2 into one type of lamellar microdomain previously self-assembled from modest-molecular-weight block copolymers. Transparent, in-plane lamellar films were first prepared by assembly of polystyrene-block-poly(2-vinylpyridine) (PS-b-P2VP), and subsequently the P2VP domains were swollen with a selective solvent, methanol. The swollen structures were then fixated by synthesizing SiO2 nanoparticles within P2VP domains. The resulting frozen photonic gels (f-photonic gels) exhibited strong reflective colors with stop bands across the visible region of wavelengths.
ISSN:0002-7863
1520-5126
DOI:10.1021/ja9021478