Outside Back Cover: Cycloazulenylene
Abstract
Cycloazulenylene exhibits a remarkably narrow HOMO–LUMO gap, intense absorption in the visible range, and a unique tubular packing in the solid state. In Research Article e2204400, Tomáš Slanina, Oliver Dumele, and co-workers strained the nonalternant azulene, known for its anti-Kasha fluorescence and intense color, into a nanohoop, leading to a material with fundamentally new properties. Image design by Philipp Berg.
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Authors: Clara Douglas, Josefine Sprachmann, David Dunlop, Joël Schlecht, Jörg Neudörfl, Tommy Wachsmuth, Julian Frost, Tomáš Slanina, Oliver Dumele
Institutions: University of Cologne, Charles University, Humboldt-Universität zu Berlin, TH Köln - University of Applied Sciences, Czech Academy of Sciences, Institute of Organic Chemistry and Biochemistry