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Updated: Mar 30, 2026
A Sensitive Visual Method for the Detection of Hydrogen Sulfide Producing Bacteria
Published on: June 27, 2022
A highly selective on-off-on responsive lanthanide(iii) based probe for recognition of copper and hydrogen sulfide
Yuk-Wang Yip1, Ga-Lai Law2, Wing-Tak Wong1
1State Key Laboratory for Chirosciences, Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Hong Kong SAR, Hong Kong, China. ga-lai.law@polyu.edu.hk wing-tak.wong@polyu.edu.hk.
Abstract:
The development of a europium(iii) based probe (EuL1) for the detection of Cu(ii) ions and hydrogen sulphide is presented. With the addition of Cu(ii) ions, EuL1 displayed the greatest quenching among the other cations examined. The binding constant was 74,026 ± 2899 M(-1). Once combined with Cu(ii) ions, EuL1Cu demonstrated high specificity for hydrogen sulfide compared to other organic and inorganic sulfur compounds. EuL1Cu exhibited an on-off-on type luminescence change with the alternate addition of Cu(ii) ions and H2S along with reversible forming-separating of the complex.
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