A Double‐Tailed Fluorescent Surfactant with a Hexavanadate Cluster as the Head Group

Blue rinse: A hybrid surfactant that comprises a hexavanadate cluster and two C18 alkyl chains shows unexpected blue luminescence (see picture). The luminescence arises from the interaction between the counterions and the hexavanadate clusters, and varies with the type of counterions. This behavior was confirmed by studying the self-assembly of the hybrids with various counterions in different solvents. Detailed facts of importance to specialist readers are published as "Supporting Information". Such documents are peer-reviewed, but not copy-edited or typeset. They are made available as submitted by the authors. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.