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A Cu(2+)-Selective Probe Based on Phenanthro-Imidazole Derivative

A novel fluorescent Probe 1, based on phenanthro-imidazole has been developed as an efficient chemosensor for the trace detection of copper ions (Cu(2+)). Probe 1 demonstrated sensitive fluorescence quenching upon binding with Cu(2+) through 1:1 stoichiometric chelation. The detection limit for Cu(2...

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Detalles Bibliográficos
Autores principales: Cheng, Dandan, Liu, Xingliang, Yang, Hongzhi, Zhang, Tian, Han, Aixia, Zang, Ling
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2016
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5298608/
https://www.ncbi.nlm.nih.gov/pubmed/28029130
http://dx.doi.org/10.3390/s17010035
Descripción
Sumario:A novel fluorescent Probe 1, based on phenanthro-imidazole has been developed as an efficient chemosensor for the trace detection of copper ions (Cu(2+)). Probe 1 demonstrated sensitive fluorescence quenching upon binding with Cu(2+) through 1:1 stoichiometric chelation. The detection limit for Cu(2+) 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 Cu(2+) with minimal influence from other common metal ions, facilitating the practical application of Probe 1 in trace detection.