Amphoteric polymeric photonic crystal with U-shaped pH response developed by intercalation polymerization

Hongwei Xia, Junpeng Zhao, Cong Meng, Ying Wu, Yijie Lu, Jingxia Wang, Yanlin Song, Lei Jiang, Guangzhao Zhang

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10 Citations (Scopus)


Amphoteric one-dimensional photonic crystal (PC) based on polystyrene-b-poly(2-vinyl pyridine) (PS-b-P2VP) block copolymer was developed by intercalation polymerization of acrylic acid and 2-hydroxyethyl methacrylate in the partly quaternized P2VP (QP2VP) layers. The amphoteric PC reversibly exhibits a high first Bragg peak position (λmax > 700 nm) at both acidic and basic pH values where the QP2VP layers are positively and negatively charged respectively. The minimum λmax (300 nm) at pH 5.5 can be observed due to charge screening. The PC with a U-shaped pH response also shows good durability.

Original languageEnglish
Pages (from-to)4156-4159
Number of pages4
JournalSoft Matter
Issue number9
Publication statusPublished - 7 May 2011
Externally publishedYes

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