title: Halide functionality dependent formation of molecular receptors and their ion recognition properties.
abstract: The halide functionality on N-bridged tripodal receptors has shown a distinct behavior on their self-assembly structures and binding ability toward HgCl(2) and ClO(4)(-) anions. The receptors containing fluoro, chloro, and iodo groups crystallized to form hemicarcerands in the solid state, whereas the receptor with a bromo group forms a molecular capsule via C-H...Br and C-H...pi interactions. The cavity of the molecular capsule is tunable and is capable of reversible encapsulating-releasing the guest molecules by pH modulation.
authors.affiliation: Institute of Chemistry, Academia Sinica, 115 Nankang, Taipei, Taiwan, Republic of China.
authors.forename: Ashutosh S
authors.initials: AS
authors.lastname: Singh
authors.forename: Bo-Yu
authors.initials: BY
authors.lastname: Chen
authors.forename: Yuh-Sheng
authors.initials: YS
authors.lastname: Wen
authors.forename: Chiitang
authors.initials: C
authors.lastname: Tsai
authors.forename: Shih-Sheng
authors.initials: SS
authors.lastname: Sun