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A Cu2+-Selective Probe Based on Phenanthro-Imidazole Derivative.

ABSTRACT: A novel fluorescent Probe 1, based on phenanthro-imidazole has been developed as an efficient chemosensor for the trace detection of copper ions (Cu2+). Probe 1 demonstrated sensitive fluorescence quenching upon binding with Cu2+ through 1:1 stoichiometric chelation. The detection limit for Cu2+ ions was projected through linear quenching fitting to be as low as 2.77 × 10-8 M (or 1.77 ppb). The sensing response was highly selective towards Cu2+ with minimal influence from other common metal ions, facilitating the practical application of Probe 1 in trace detection.

SUBMITTER: Cheng D 

PROVIDER: S-EPMC5298608 | biostudies-literature | 2016 Dec

REPOSITORIES: biostudies-literature

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A Cu<sup>2+</sup>-Selective Probe Based on Phenanthro-Imidazole Derivative.

Cheng Dandan D   Liu Xingliang X   Yang Hongzhi H   Zhang Tian T   Han Aixia A   Zang Ling L  

Sensors (Basel, Switzerland) 20161224 1

A novel fluorescent Probe <b>1</b>, based on phenanthro-imidazole has been developed as an efficient chemosensor for the trace detection of copper ions (Cu<sup>2+</sup>). Probe <b>1</b> demonstrated sensitive fluorescence quenching upon binding with Cu<sup>2+</sup> through 1:1 stoichiometric chelation. The detection limit for Cu<sup>2+</sup> ions was projected through linear quenching fitting to be as low as 2.77 × 10<sup>-8</sup> M (or 1.77 ppb). The sensing response was highly selective toward  ...[more]

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