A Lockable Light‐Driven Molecular Shuttle with a Fluorescent Signal

Abstract

A turn on! A lockable photodriven molecular shuttle is based on a [2]rotaxane that consists of an α-cyclodextrin threaded by a stilbene derivative. The fluorescent signals originate from the naphthalimide stopper and indicate the position of the shuttle. Once unlocked, the device can be turned on by irradiation at 335 nm and turned off by irradiation at 280 nm. The shuttle can be locked or unlocked by the addition acid or alkali, respectively (see picture). Supporting information for this article is available on the WWW under http://www.wiley-vch.de/contents/jc_2002/2004/z53708_s.pdf or from the author. 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.