title: Flow-assisted 2D polymorph selection: stabilizing metastable monolayers at the liquid-solid interface.
abstract: Controlling crystal polymorphism constitutes a formidable challenge in contemporary chemistry. Two-dimensional (2D) crystals often provide model systems to decipher the complications in 3D crystals. In this contribution, we explore a unique way of governing 2D polymorphism at the organic liquid-solid interface. We demonstrate that a directional solvent flow could be used to stabilize crystalline monolayers of a metastable polymorph. Furthermore, flow fields active within the applied flow generate millimeter-sized domains of either polymorph in a controlled and reproducible fashion.
authors.affiliation: KU Leuven-University of Leuven , Department of Chemistry, Division of Molecular Imaging and Photonics, Celestijnenlaan 200F, B-3001 Leuven, Belgium.
authors.forename: Shern-Long
authors.initials: SL
authors.lastname: Lee
authors.forename: Zhongyi
authors.initials: Z
authors.lastname: Yuan
authors.forename: Long
authors.initials: L
authors.lastname: Chen
authors.forename: Kunal S
authors.initials: KS
authors.lastname: Mali
authors.forename: Klaus
authors.initials: K
authors.lastname: Müllen
authors.forename: Steven
authors.initials: S
authors.lastname: De Feyter