Mechanical Fixation by Porphyrin Connection: Synthesis and Transport Studies of a Bicyclic Dimer ZwickPatrick WeilandKevin J. MalinčíkJuraj StefaniDavide HäussingerDaniel van der ZantHerre S. J. DulićDiana MayorMarcel 2019 The bowl-shaped, 3-fold interlinked porphyrin dimer <b>2</b> was obtained in respectable yields during macrocyclization attempts. Its bicyclic structure, consisting of a macrocycle made of a pair of acetylene interlinked tetraphenylporphyrins which are additionally linked by a C–C bond interlinking two pyrrole subunits, has been confirmed spectroscopically (2D-NMR, UV/vis, HR-MALDI-ToF MS). Late-stage functionalization provided the structural analogue <b>1</b> with acetyl-protected terminal thiol anchor groups enabling single molecule transport investigations in a mechanically controlled break junction experiment. The formation of single-molecule junctions was observed, displaying large variations in the observed conductance values pointing at a rich diversity in the molecular junctions.