Title: An organic hydrogel film with micron-sized pillar array for real-time and indicator-free detection of Zn(2+)
Authors: Chao, Yu-Chiang
Huang, Yi-Sa
Wang, Hsin-Ping
Fu, Ssu-Ming
Huang, Chien-Hao
Liang, Yen-Chun
Yang, Wen-Cheng
Huang, Yu-Sheng
Chang, Gao-Fong
Zan, Hsiao-Wen
Meng, Hsin-Fei
Hung, Chen-Hsiung
Fu, Chien-Chung
Department of Electrophysics
Institute of Physics
Department of Photonics
Issue Date: 1-Nov-2011
Abstract: A hydrogel sensing film for a real-time and indicator-free detection of Zn(2+) 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 Zn(2+). 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 Zn(2+) concentrations of 10 (4) and 10 (3) M, the response time is 30 and 3 s, respectively. (C) 2011 Elsevier B.V. All rights reserved.
URI: http://dx.doi.org/10.1016/j.orgel.2011.07.001
ISSN: 1566-1199
DOI: 10.1016/j.orgel.2011.07.001
Volume: 12
Issue: 11
Begin Page: 1899
End Page: 1902
Appears in Collections:Articles