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Updated: May 8, 2026

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Published on: October 9, 2012
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Photonic crystal/DNA hydrogels for Hg(II) and pH semi-quantitative visual detection in seawater
Minjun Zhao1,2,3,4, Zhe Zhang1,2,3,4, Xiaoting Ji1,2,3,4
1Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science, Ministry of Education, Qingdao 266042, PR China. xiaotingji@qust.edu.cn.
Abstract:
A DNA-functionalized photonic hydrogel was developed for dual-parameter seawater analysis of Hg2+ and pH, enabling rapid in situ monitoring through smartphone-detectable RGB colour changes.

