Angewandte Chemie International Edition

Cover image for Vol. 53 Issue 17

Editor: Peter Gölitz, Deputy Editors: Neville Compton, Haymo Ross

Online ISSN: 1521-3773

Associated Title(s): Angewandte Chemie, Chemistry - A European Journal, Chemistry – An Asian Journal, Zeitschrift für Chemie

48_38b/2009Inside Cover: Writing Self-Erasing Images using Metastable Nanoparticle “Inks” (Angew. Chem. Int. Ed. 38/2009)

Light-sensitive inks for self-erasing images are formed from metal nanoparticles (NPs) covered with photoswitchable ligands dispersed in a polymer film, as described by B. A. Grzybowski and co-workers on page 7035 ff. Upon exposure to UV light, the NPs form metastable aggregates; the apparent color corresponds to the degree of aggregation. In the absence of light, the aggregates fall apart and the images gradually self-erase. Multicolor images can be also be created with a single NP ink.

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