title: Aromatic oligureas as hosts for anions and cations.
abstract: Aromatic oligoureas 3 and 4 have urea moieties engaging in weak intramolecular H-bonding that constrains their backbones. The shorter 3a and 3b are able to bind chloride and acetate but not their corresponding counterion. The longer 4 binds both an anion and its counterion with the same affinity.
authors.affiliation: Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, NY 14260, USA. bgong@buffalo.edu.
authors.forename: Alan L
authors.initials: AL
authors.lastname: Connor
authors.affiliation: College of Chemistry, Beijing Normal University, Beijing 100875, China. luzl@bnu.edu.cn.
authors.forename: Ting
authors.initials: T
authors.lastname: Hu
authors.affiliation: Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, NY 14260, USA. bgong@buffalo.edu.
authors.forename: Cadnel S F
authors.initials: CS
authors.lastname: Detchou
authors.affiliation: Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, NY 14260, USA. bgong@buffalo.edu and College of Chemistry, Beijing Normal University, Beijing 100875, China. luzl@bnu.edu.cn.
authors.forename: Rui
authors.initials: R
authors.lastname: Liu
authors.affiliation: Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, NY 14260, USA. bgong@buffalo.edu.
authors.forename: Surya V S R K
authors.initials: SV
authors.lastname: Pulavarti
authors.affiliation: Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, NY 14260, USA. bgong@buffalo.edu.
authors.forename: Thomas
authors.initials: T
authors.lastname: Szyperski
authors.affiliation: College of Chemistry, Beijing Normal University, Beijing 100875, China. luzl@bnu.edu.cn.
authors.forename: Zhonglin
authors.initials: Z
authors.lastname: Lu
authors.affiliation: Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, NY 14260, USA. bgong@buffalo.edu and College of Chemistry, Beijing Normal University, Beijing 100875, China. luzl@bnu.edu.cn.
authors.forename: Bing
authors.initials: B
authors.lastname: Gong