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Novel fluorescent chemosensors based on tryptophan unit for Cu2+ and Fe3+ in aqueous solution

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Abstract

We reported four fluorescent chemosensors containing tryptophan units. The fluorescence spectrum titration experiments suggest that chemosensors 1, 2, 3 and 4 are highly selective for Cu2+ and Fe3+ over Li+, Na+, K+, Co2+, Zn2+, Ni2+, Hg2+ and Cr3+ via forming complexes with Cu2+ or Fe3+, which is confirmed by dramatical quench of fluoreseence in aqueous solution at pH 7.4, thus making all the chemosensors suitable for Cu2+ and Fe3+ fluorescent sensors.

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Authors and Affiliations

  1. Institute of Fine Chemistry and Chemical Engineering, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, 475004, P. R. China

    Peng-fei Cheng, Kuo-xi Xu, Wen-yong Yao, Hua-jie Kong, Li Kou, Xiao-dan Ma & Chao-jie Wang

  2. Key Laboratory of Natural Medicinal and Immunal Engineering of Henan Province, Henan University, Kaifeng, 475004, P. R. China

    Peng-fei Cheng, Kuo-xi Xu & Chao-jie Wang

Authors
  1. Peng-fei Cheng
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  2. Kuo-xi Xu
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  3. Wen-yong Yao
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  4. Hua-jie Kong
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  5. Li Kou
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  6. Xiao-dan Ma
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  7. Chao-jie Wang
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Corresponding author

Correspondence to Kuo-xi Xu.

Additional information

Supported by the National Natural Science Foundation of China(No.21172053, 90913001).

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Cheng, Pf., Xu, Kx., Yao, Wy. et al. Novel fluorescent chemosensors based on tryptophan unit for Cu2+ and Fe3+ in aqueous solution. Chem. Res. Chin. Univ. 29, 642–646 (2013). https://doi.org/10.1007/s40242-013-3002-1

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  • DOI: https://doi.org/10.1007/s40242-013-3002-1

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