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Fluorescence Chemosensor for HSO4 Ion Based on Pyrrole-Substituted Salicylimine Zn2+ Complex: Nanomolar Detection

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Abstract

A novel pyrrole-substituted salicylimine zinc (II) ion complex has been synthesized and evaluated its anion binding affinity. The probe 4 has high selectivity for HSO4 over other anions in CH3OH:H2O (70:30, v/v) solvent system. The emission intensity of 4 was quenched upon addition of HSO4 . The probe 4 is highly selective for HSO4 with a detection limit of 40 nm. Photoinduced electron transfer (PET) is responsible for observed change. The binding affinity of 4 for HSO4 was further authenticated through ratiometric change in absorbance profile.

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Correspondence to Ratnamala Bendre or Anil Kuwar.

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Fegade, U., Bhosale, J., Sharma, H. et al. Fluorescence Chemosensor for HSO4 Ion Based on Pyrrole-Substituted Salicylimine Zn2+ Complex: Nanomolar Detection. J Fluoresc 25, 819–824 (2015). https://doi.org/10.1007/s10895-015-1599-9

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  • DOI: https://doi.org/10.1007/s10895-015-1599-9

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