title: Patterned recognition of amines and ammonium ions by a pyridine-based helical oligoamide host.
abstract: In response to binding to amine and ammonium guests of varying types, a pyridine-based folding oligomer displays fingerprint regions in its (1)H NMR spectra that allow for the easy identification and classification of the bound guests.
authors.affiliation: Department of Chemistry, National University of Singapore, Singapore117543.  chmzh@nus.edu.sg.
authors.forename: Wei Qiang
authors.initials: WQ
authors.lastname: Ong
authors.forename: Huaiqing
authors.initials: H
authors.lastname: Zhao
authors.forename: Chang
authors.initials: C
authors.lastname: Sun
authors.forename: Ji'en
authors.initials: J
authors.lastname: Wu
authors.forename: Zicong
authors.initials: Z
authors.lastname: Wong
authors.forename: Sam F Y
authors.initials: SF
authors.lastname: Li
authors.forename: Yunhan
authors.initials: Y
authors.lastname: Hong
authors.forename: Huaqiang
authors.initials: H
authors.lastname: Zeng