An organic hydrogel film with micron-sized pillar array for real-time and indicator-free detection of Zn2+

Yu Chiang Chao, Yi Sa Huang, Hsin Ping Wang, Ssu Ming Fu, Chien Hao Huang, Yen Chun Liang, Wen Cheng Yang, Yu Sheng Huang, Gao Fong Chang, Hsiao Wen Zan, Hsin Fei Meng*, Chen Hsiung Hung, Chien Chung Fu

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    8 Citations (Scopus)

    Abstract

    A hydrogel sensing film for a real-time and indicator-free detection of Zn2+ is developed by embedding a fluorescent indicator 11,16-bis(phenyl)-6,6,21,21-tetramethyl-m-benzi-6,21-porphodimethene in a hydrogel host poly(2-hydroxyethyl methacrylate). The sensing film shows high stability and selectivity to Zn2+. The sensitivity of the sensing film is increased by fabricating a micron-sized pillar array on the surface of the sensing film to increase the surface area. For Zn2+ concentrations of 10-4 and 10-3 M, the response time is 30 and 3 s, respectively.

    Original languageEnglish
    Pages (from-to)1899-1902
    Number of pages4
    JournalOrganic Electronics
    Volume12
    Issue number11
    DOIs
    Publication statusPublished - 2011 Nov

    Keywords

    • Hydrogel
    • Indicator-free
    • Real-time
    • Sensor
    • Signaling molecule
    • Zinc

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Biomaterials
    • Chemistry(all)
    • Condensed Matter Physics
    • Materials Chemistry
    • Electrical and Electronic Engineering

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