An Unsymmetric Salamo-like Chemosensor for Fuorescent Recognition of Zn2+

Abstract

A new unsymmetric tetradentate salamo-like chemical sensor H2L for fluorescent recognition of Zn2+ has been designed and synthesized. The sensor can recognize Zn2+ from other metal ions examined with selectivity, anti-interference, reliability and high sensitivity (LOD = 1.89 × 10−6 M) in ethanol/H2O solution. The results of UV-Vis and fluorescent spectra analyses, X-ray crystallographic study and DMol3 simulation and calculation (on Materials Studio) indicate that the chelation-enhanced fluorescence (CHEF) recognition mechanism of the sensor H2L for Zn2+ is of its hindered PET process. The sensor H2L for Zn2+ has excellent fluorescence characteristics and has potential application value in biological and environmental systems.

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Acknowledgements

This work was supported by Science and Technology Program of Gansu Province (18YF1GA054), the National Natural Science Foundation of China (21761018) and the Program for Excellent Team of Scientific Research in Lanzhou Jiaotong University (201706), three of which are gratefully acknowledged.

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Correspondence to Li Wang.

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Peng, Y., Zhang, Y., Jiang, Y. et al. An Unsymmetric Salamo-like Chemosensor for Fuorescent Recognition of Zn2+. J Fluoresc (2020). https://doi.org/10.1007/s10895-020-02579-y

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Keywords

  • Molecule sensor
  • Fluorescence recognition
  • Zn(II) ion
  • Crystal structure
  • DMol3