The Difference in Sensing Properties Towards Anions between Two Pyridinium Amide-Based Receptors with a Subtle Change of H-Bond Position

Author(s): Wei-tao Gong*, Wei-dong Qu, Guiling Ning.

Journal Name: Letters in Organic Chemistry

Volume 17 , Issue 6 , 2020

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Graphical Abstract:


Two pyridinium amide-based receptors L1 and L2 with a small difference of H-bond position of the amide have been synthesized and characterized. Interestingly, they exhibited a huge difference in sensing towards AcO- and H2PO4 -, respectively. Receptor L1 was found to be ‘naked-eye’ selective for AcO- anions, while receptor L2 showed clear fluorescence enhancement selective to H2PO4 - anion. The recognition ability has been established by fluorescence emission, UV-vis spectra, and 1HNMR titration.

Keywords: Pyridinium amide-based receptors, naked-eye selective, acetate ion, pyridinium, naked-eye, hydrogen bonding.

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Article Details

Year: 2020
Page: [472 - 478]
Pages: 7
DOI: 10.2174/1570180816666190801100603
Price: $65

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