Photonic crystal/DNA hydrogels for Hg(II) and pH semi-quantitative visual detection in seawater

Minjun Zhao; Zhe Zhang; Xiaoting Ji; Caifeng Ding

doi:10.1039/D5CC04908C

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Photonic crystal/DNA hydrogels for Hg(ii) and pH semi-quantitative visual detection in seawater

Minjun Zhao,^abcd Zhe Zhang,^abcd Xiaoting Ji*^abcd and Caifeng Ding

*^abcd

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* Corresponding authors

^a Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science, Ministry of Education, Qingdao 266042, PR China
E-mail: xiaotingji@qust.edu.cn, dingcaifeng2003@163.com

^b Shandong Key Laboratory of Biochemical Analysis, Qingdao 266042, PR China

^c Key Laboratory of Analytical Chemistry for Life Science in Universities of Shandong, Qingdao 266042, PR China

^d College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, PR China

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.

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DOI: https://doi.org/10.1039/D5CC04908C
Article type: Communication
Submitted: 26 Aug 2025
Accepted: 06 Nov 2025
First published: 10 Nov 2025

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Chem. Commun., 2025, Advance Article

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Photonic crystal/DNA hydrogels for Hg(II) and pH semi-quantitative visual detection in seawater

M. Zhao, Z. Zhang, X. Ji and C. Ding, Chem. Commun., 2025, Advance Article , DOI: 10.1039/D5CC04908C

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Chemical Communications

Photonic crystal/DNA hydrogels for Hg(ii) and pH semi-quantitative visual detection in seawater

Abstract

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Photonic crystal/DNA hydrogels for Hg(II) and pH semi-quantitative visual detection in seawater

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