10.1021/acs.joc.9b02327.s001 Patrick Zwick Patrick Zwick Kevin J. Weiland Kevin J. Weiland Juraj Malinčík Juraj Malinčík Davide Stefani Davide Stefani Daniel Häussinger Daniel Häussinger Herre S. J. van der Zant Herre S. J. van der Zant Diana Dulić Diana Dulić Marcel Mayor Marcel Mayor Mechanical Fixation by Porphyrin Connection: Synthesis and Transport Studies of a Bicyclic Dimer American Chemical Society 2019 Transport Studies Porphyrin Connection conductance values molecule transport investigations bicyclic structure Bicyclic Dimer macrocyclization attempts junction experiment Mechanical Fixation pyrrole subunits MS D-NMR single-molecule junctions acetyl-protected terminal thiol anchor groups UV Late-stage functionalization analogue 1 porphyrin dimer 2 2019-11-14 21:19:22 Journal contribution https://acs.figshare.com/articles/journal_contribution/Mechanical_Fixation_by_Porphyrin_Connection_Synthesis_and_Transport_Studies_of_a_Bicyclic_Dimer/10308245 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.