title: Shape-persistent phenylene-acetylene macrocycles: large rings-low yield?
authors.affiliation: Universität Karlsruhe, Institute for Technical Chemistry and Polymer Chemistry, Engesserstrasse 18, 76131 Karlsruhe, Germany. hoeger@chemie.uni-karlsruhe.de
authors.forename: Sigurd
authors.initials: S
authors.lastname: Höger