title: A new ion pair receptor fulfilling a dual function as a chromogenic molecular switch for F- and ratiometric selective recognition of HSO4(-).
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.
authors: Department of Chemistry and TKL of Metal- and Molecule-Based Material Chemistry, Nankai University, Tianjin 300071, China.
authors: Xiu-Ming
authors: XM
authors: Liu
authors: Ya-Ping
authors: YP
authors: Li
authors: Wei-Chao
authors: WC
authors: Song
authors: Qiang
authors: Q
authors: Zhao
authors: Xian-He
authors: XH
authors: Bu