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Issue 4, 2014
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Selective fluorescence sensing of salicylic acid using a simple pyrene appended imidazole receptor

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Abstract

A simple salicylic acid selective fluorescence receptor 1 was designed by combining 1-pyrenecarboxaldehyde and 1-(3-aminopropyl)imidazole. The selective sensing of salicylic acid resulted in a significant increase in monomer emissions due to the π–π interactions between the benzene and pyrene rings. The nature of the interactions between receptor 1 and salicylic acid was investigated further by 1H NMR spectroscopy, and the energy minimised structure of the complex between receptor 1 and salicylic acid was optimised. Receptor 1 showed the highest binding constant with 5-nitrosalicylic acid (Ka = 7.18 × 104 M−1) among all the aromatic carboxylic acids tested. 5-Nitrosalicylic acid formed a complex with receptor 1 at a 1 : 1 ratio in EtOH.

Graphical abstract: Selective fluorescence sensing of salicylic acid using a simple pyrene appended imidazole receptor

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Publication details

The article was received on 30 Oct 2013, accepted on 10 Feb 2014 and first published on 10 Feb 2014


Article type: Paper
DOI: 10.1039/C3NJ01339A
Citation: New J. Chem., 2014,38, 1711-1716

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    Selective fluorescence sensing of salicylic acid using a simple pyrene appended imidazole receptor

    Md. W. Ahmad, B. Kim and H. Kim, New J. Chem., 2014, 38, 1711
    DOI: 10.1039/C3NJ01339A

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