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Imidazolium-Functionalized BINOL as a Multifunctional Receptor for Chromogenic and Chiral Anion Recognition

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journal contribution
posted on 05.02.2009, 00:00 by Qiao-Sen Lu, Liang Dong, Ji Zhang, Jing Li, Lu Jiang, Yu Huang, Song Qin, Chang-Wei Hu, Xiao-Qi Yu
A novel imidazolium-functionalized BINOL fluorescent receptor R-1 was developed as a multifunctional receptor for both chromogenic and chiral anion recognition. The different fluorescent responses and color changes of R-1 could be applied to the detection of fluoride and acetate ions by the naked eye. Furthermore, the chiral recognition of the two enantiomers of α-amino carboxylates was also studied, and R-1 displayed a remarkable binding ability for the t-Boc alanine anion with an interesting enantioselectivity (KL/KD = 4.5).