Pieter J. Gilissen,1 Nicolas
Vanthuyne,2 Ben L. Feringa,3,*
Johannes A.A.W. Elemans,1,* and Roeland J.M.
Nolte1,*
1Radboud University, Institute for Molecules and
Materials, Heyendaalseweg 135, 6525 AJ Nijmegen, the Netherlands
2Aix Marseille Univ, CNRS, Centrale Marseille, iSm2,
Marseille, France. 3University of Groningen, Stratingh
Institute for Chemistry, Nijenborgh 4, 9747 AG Groningen, the
Netherlands