Ontology type: schema:ScholarlyArticle Open Access: True
2010-05-10
AUTHORSXu-Hua Zhao, Qiu-Juan Ma, Xiao-Bing Zhang, Bo Huang, Qin Jiang, Jing Zhang, Guo-Li Shen, Ru-Qin Yu
ABSTRACTIn this paper, we describe the fabrication and analytical characteristics of fluorescence-based copper ion-sensing glass slides. To construct the sensor, a naphthalimide derivative N-allyl-4-(bis(pyridin-2-ylmethyl)amino)ethylamino-1,8-naphthalimide (1) with a terminal double bond was synthesized and photo-copolymerized with 2-hydroxyethyl methacrylate (HEMA) on a glass surface treated with a silanizing agent. In the presence of Cu2+ at pH 7.24, the resulting optical sensor undergoes fluorescence quenching. Thus, the proposed sensor with visible excitation can behave as a fluorescent sensor for the selective detection of Cu2+. In addition, the sensor exhibits satisfactory selectivity, reproducibility and response time. The sensing membrane possesses a relatively long lifetime of at least 2 months. The linear response range covers a concentration range of Cu2+ from 4.0 × 10-7 to 6.0 × 10−4 mol/L and the detection limit is 2.0 × 10−7 mol/L. The determination of Cu2+ in river water samples shows satisfactory results. More... »
PAGES585-590
http://scigraph.springernature.com/pub.10.2116/analsci.26.585
DOIhttp://dx.doi.org/10.2116/analsci.26.585
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PUBMEDhttps://www.ncbi.nlm.nih.gov/pubmed/20467135
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