Journal
NEW JOURNAL OF CHEMISTRY
Volume 38, Issue 4, Pages 1711-1716Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3nj01339a
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Funding
- Basic Science Research Program through the National Research Foundation of Korea (NRF)
- Ministry of Science, ICT and Future Planning [2013R1A1A2006777]
- Kyungpook National University Research Fund
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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 p-p interactions between the benzene and pyrene rings. The nature of the interactions between receptor 1 and salicylic acid was investigated further by H-1 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 (K-a = 7.18 x 10(4) 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.
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