A highly selective on-off-on responsive lanthanide(III) based probe for recognition of copper and hydrogen sulfide

Yuk Wang Yip, Ga Lai Law, Wing Tak Wong

Research output: Journal article publicationJournal articleAcademic researchpeer-review

28 Citations (Scopus)


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 74026 ± 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.
Original languageEnglish
Pages (from-to)928-935
Number of pages8
JournalDalton Transactions
Issue number3
Publication statusPublished - 1 Jan 2016

ASJC Scopus subject areas

  • Inorganic Chemistry

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