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A New Rhodamine‐based Fluorescent Probe for the Discrimination of Fe 3+ from Fe 2+
Author(s) -
You QiHua,
Huang HuaBin,
Zhuang ZhiXia,
Wang XiaoRu,
Chan WingHong
Publication year - 2016
Publication title -
bulletin of the korean chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.237
H-Index - 59
ISSN - 1229-5949
DOI - 10.1002/bkcs.10971
Subject(s) - fluorescence , rhodamine , titration , stoichiometry , chemistry , metal ions in aqueous solution , analytical chemistry (journal) , rhodamine b , ion , metal , inorganic chemistry , optics , physics , chromatography , biochemistry , photocatalysis , catalysis , organic chemistry
A new rhodamine‐based fluorescent probe for the discrimination of Fe 3+ from Fe 2+ has been designed and investigated. The probe shows an immediate visual color change in response to Fe 3+ and Cu 2+ , while only Fe 3+ triggers the fluorescent change of the probe. The existence of large amount of other metal ions shows negligible interference in the detection of Fe 3+ . The association constant K ass of 4.64 × 10 8 M −2 ( R 2 = 0.994) and 5.38 × 10 8 M −2 ( R 2 = 0.991) of the complex was derived from UV /Vis and fluorescence titration assuming 1:2 stoichiometry of probe–Fe 3+ complex, respectively.