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A new ion pair receptor fulfilling a dual function as a chromogenic molecular switch for F- and ratiometric selective
Xiu-Ming Liu1, Ya-Ping Li, Wei-Chao Song
1Department of Chemistry and TKL of Metal- and Molecule-Based Material Chemistry, Nankai University, Tianjin 300071, China.
Abstract:
A new ditopic ion pair receptor 1 containing two biindole moieties and a bis-benzocrown ether unit shows a remarkable color switching (ON- and -OFF) function induced by anion (F(-)) and cation (K(+)) recognition. The ditopic receptor 1 binds in a cooperative fashion to HSO(4)(-) in the presence of 1·K(+) and acts as a selective ditopic receptor to recognize ion pairs with a wavelength-ratiometric manner.
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