Chemical Research in Chinese Universities ›› 2014, Vol. 30 ›› Issue (4): 560-565.doi: 10.1007/s40242-014-3192-1

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A Novel Coumarin-based Fluorescence Chemosensor for Fe3+

WANG Ruiping1, WAN Qihua1, FENG Feng1, BAI Yunfeng2   

  1. 1. Department of Chemistry, College of Sciences, Nanchang University, Nanchang 330047, P. R. China;
    2. Department of Chemistry, Datong University, Datong 037009, P. R. China
  • Online:2014-08-01 Published:2014-06-03
  • Contact: FENG Feng E-mail:feng-feng64@263.net
  • Supported by:

    Supported by the National Natural Science Foundation of China(No.21175085) and the Natural Science Foundation of Shanxi Province, China(No.2009011015-1).

Abstract:

A novel coumarin derivative[7-diethylamino-2-oxo-2H-chromene-3-carboxylic acid(6-amino-pyridin- 2-yl)-amide, CFe1] has been synthesized and its potential application as a chemosensor for the detection of metal ions has been further investigated. The responses of CFe1 to Fe3+ were studied by fluorescence emission spectrometry in the presence of other metal ions such as Al3+, Ba2+, Ca2+, Co3+, Cr3+, Cu2+, Fe2+, Hg2+, Mg2+, Mn2+, Na+, Ni+, Pb2+, Zn2+, K+, and Ag+. CFe1 showed a good selectivity for Fe3+ with fast response, a wide pH span of 3.3—9.18, and a large Stocks shift. CFe1 in the presence of Fe3+ and ethylene diamine tetraacetic acid(EDTA) makes the blue solution fade to colorless, which is due to the formation of CFe1-Fe3+ complex instead of any catalytic action of Fe3+. Furthermore, the imaging of Fe3+ in cultured single mice microglia cells was realized with the aid of CFe1, indicating that CFe1 has a great potential to be used as promising models for the future design of novel and robust chemosensor for metal ion detection in the field of biomedical and environmental analyses.

Key words: Coumarin, Fe3+, Fluorescence, Selectivity