title: Synthesis of substituted [8]cycloparaphenylenes by [2 + 2 + 2] cycloaddition.
abstract: A new modular approach to the smallest substituted cycloparaphenylenes (CPPs) is presented. This versatile method permits access to substituted CPPs, choosing the substituent at a late stage of the synthesis. Variously substituted [8]CPPs have been synthesized, and their properties analyzed. The structural characteristics of substituted CPPs are close to those of unsubstituted CPPs. However, their optoelectronic behavior differs remarkably due to the larger torsion angle between the phenyl units.
authors.affiliation: Department of Chemistry, Basel University , St Johanns-Ring 19, CH-4056 Basel, Switzerland.
authors.forename: Anne-Florence
authors.initials: AF
authors.lastname: Tran-Van
authors.forename: Elena
authors.initials: E
authors.lastname: Huxol
authors.forename: Jonathan M
authors.initials: JM
authors.lastname: Basler
authors.forename: Markus
authors.initials: M
authors.lastname: Neuburger
authors.forename: Jean-Joseph
authors.initials: JJ
authors.lastname: Adjizian
authors.forename: Chris P
authors.initials: CP
authors.lastname: Ewels
authors.forename: Hermann A
authors.initials: HA
authors.lastname: Wegner