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 Scopus citations

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
StatePublished - 1 Jan 2011

Keywords

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

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