title: Controlled growth of calcium carbonate by poly(ethylenimine) at the air/water interface.
abstract: Two metastable calcium carbonate polymorphs, hemispherical vaterite and needle-like aragonite, are selectively formed at the air/water interface by the mediation of poly(ethyleneimine)(with molecular weights of 25000 and 2000, respectively) dissolved in supersaturated calcium bicarbonate solution.
authors.affiliation: Laboratory of Intelligent Interfaces, School of Chemistry and Molecular Engineering and Center for Molecular Catalysis, Seoul National University, Seoul 151-472, Korea.
authors.forename: Hyoung
authors.initials: H
authors.lastname: Kun Park
authors.forename: Inhyung
authors.initials: I
authors.lastname: Lee
authors.forename: Kwan
authors.initials: K
authors.lastname: Kim