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Open AccessArticle

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

1
Chemical Engineering College, Qinghai University, Xining 810016, China
2
Qinghai Heavy Industry Vocational School, Xining 810101, China
3
Department of Materials Science and Engineering, University of Utah, Salt Lake City, UT 84112, USA
*
Authors to whom correspondence should be addressed.
These two authors contributed equally.
Academic Editors: Jong Seung Kim and Min Hee Lee
Sensors 2017, 17(1), 35; https://doi.org/10.3390/s17010035
Received: 21 October 2016 / Revised: 20 December 2016 / Accepted: 21 December 2016 / Published: 24 December 2016
(This article belongs to the Special Issue Colorimetric and Fluorescent Sensor)
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. View Full-Text
Keywords: copper ion; fluorescent probe; phenanthro-imidazole copper ion; fluorescent probe; phenanthro-imidazole
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MDPI and ACS Style

Cheng, D.; Liu, X.; Yang, H.; Zhang, T.; Han, A.; Zang, L. A Cu2+-Selective Probe Based on Phenanthro-Imidazole Derivative. Sensors 2017, 17, 35.

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