Solution epitaxy is a method for growing high-quality two-dimensional crystals of organic semiconductors (2DCOS) up to centimeter size; t
hese 2DCOS can be efficiently transferred to any substrate. In t
heir Communication on
page 9519 ff., W. Hu and co-workers show how this new method involves two steps: T
he self-assembly of micrometer-sized 2DCOS on t
he surface of water and t
heir epitaxial growth into millimeter- or centimeter-sized 2DCOS with a thickness of several molecular layers.