Abstract
A new fluorescent chemosensor 2-(2-thiophene)imidazo [4,5,f]-1,10-phenanthroline (L) was prepared and characterized. By adding univalent or divalent metal ions such as Na+, K+, Mg2+, Ba2+, Mn2+, Fe2+, Co2+, Ni2+, Cu2+, Ag+, Zn2+, Cd2+ and Hg2+ ions into the solution of L in DMF under buffered conditions with the working pH ranging from 7.0 to 8.0, we found that L could be used to detect K+ ratiometricly and it could also be applied to sense Co2+ with the phenomenon of fluorescence quenching of L. While the response behavior of L was not discernibly affected by other examined metal ions.
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The authors thank the National Nature Science Foundation of China (No. 20871022) and Foundation of Liaoning Province (No. 2009R03 and 2009A028) for the financial support.
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Wang, X., Zheng, W., Lin, H. et al. A New Fluorescent Chemosensor Detecting Co2+ and K+ in DMF Buffered Solution. J Fluoresc 20, 557–561 (2010). https://doi.org/10.1007/s10895-009-0580-x
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DOI: https://doi.org/10.1007/s10895-009-0580-x