Abstract
Front Cover: The unique formation of a poly(pyrrole) (PPy) membrane, on the air/water interface of a droplet solution containing ammonium persulfate and phytic acid, is investigated in article number 1800707 by Sang Joon Lee and co-workers. As polymerization occurs at the air/water interface, a blue-black PPy clearly forms, and the top of the droplet becomes rapidly flattened. The surface of the fabricated PPy thin film has a well-organized structure of a pretzel shape.
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