Department of Chemistry

Scientist in Charge:Prof. Dr. Jan O. Jeppesen

We develop optoelectronic switches with redoxactive groups that allow for electrical switching of fluorescence efficiency (electrical input generates optical output).

Researcher:Jess Lycoops, MSc

© 2009 Last Modified: January, 2010 Impressum

A [2] rotaxane molecule that can be switched electrically. The positively charged CPPQT(4+) ring (blue) is not covalently bonded but can move along the chain. Depending on the oxidation state of the TTF moiety (green), it "prefers" the TTF or the DNP (red) moiety, leading to characteristic optical properties that depend on the electric potential. The cyan and black bulky groups prevent the CBPQT(4+) ring from leaving the chain ("mechanical bond") and give the chain a dumbbell shape.