Anthracene-Labeled 1,2,3-Triazole-Linked Bispyridinium Amide for Selective Sensing of H2PO4-by Fluorescence and Gel Formation

作者：Ghosh Kumaresh^*; Sarkar Avik Ranjan; Chattopadhyay Asoke P

来源：European Journal of Organic Chemistry, 2012, 2012(7): 1311-1317.

DOI：10.1002/ejoc.201101240

• Supramolecular chemistry
• Anions
• Sensors
• Receptors
• Gels
• Fluo-rescence

A new receptor 1 has been designed and synthesized for the selective recognition of anions, which employs hydrogen bonding and electrostatic interactions. Receptor 1 selectively recognizes H2PO4 to exhibit a ratiometric emission response and formed a stable gel in CHCl3 that contained 10?% CH3CN, which is useful to visually sense H2PO4. In comparison, receptor 2 did not form a gel with H2PO4 under similar conditions. Upon interaction with H2PO4, the intensity of the monomer and excimer emission peaks of 2 increased markedly. Moreover, F ions induced quenching of monomer emission in both 1 and 2 in a nonratiometric manner, which distinguished it from the other anions examined.

• 出版日期2012-3