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Title: Efficient screening of 2D molecular polymorphs at the solution-solid interface
Authors: Lee, Shern-Long ×
Adisoejoso, Jinne
Fang, yuan
Tahara, Kazukuni
Tobe, Yoshito
Mali, Kunal S
De Feyter, Steven #
Issue Date: 2015
Publisher: RSC Publishing
Series Title: Nanoscale vol:7 issue:12 pages:5344-5349
Abstract: Formation of multiple polymorphs during two-dimensional (2D) crystallization of organic molecules is more of a routine occurrence than rarity. Although such diverse crystalline structures provide exciting possibilities for studying crystal engineering in 2D, predicting the occurrence of polymorphs for a given building block is often non-trivial. Moreover, there is scarcity of methods that can experimentally verify the presence of such crystalline polymorphs in a straightforward fashion. Here we demonstrate a relatively simple experimental approach for screening of 2D polymorphs formed at the solution–solid interface. The strategy involves use of solution flow produced by contacting a piece of tissue paper to the sample to generate a lateral density gradient along the substrate surface. In situ generation of such gradient allows rapid discovery and nanoscale separation of multiple 2D polymorphs in a single experiment. The concept is demonstrated using three structurally different building blocks that differ in terms of intermolecular interactions responsible for 2D crystal formation. The method described here represents a powerful tool for efficient screening of 2D polymorphs formed at the solution–solid interface
ISSN: 2040-3364
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Molecular Imaging and Photonics
× corresponding author
# (joint) last author

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