10.1021/nl050032q.s001 Kasper Moth-Poulsen Kasper Moth-Poulsen Lionel Patrone Lionel Patrone Nicolai Stuhr-Hansen Nicolai Stuhr-Hansen Jørn B. Christensen Jørn B. Christensen Jean-Philippe Bourgoin Jean-Philippe Bourgoin Thomas Bjørnholm Thomas Bjørnholm Probing the Effects of Conjugation Path on the Electronic Transmission through Single Molecules Using Scanning Tunneling Microscopy American Chemical Society 2005 Electronic Transmission benzene ring Scanning Tunneling Microscopy series insertion para methylene spacer group Single Molecules thiol conjugation path meta substitution relationship STM scanning tunneling microscopy nitro group substitution molecule level transparency OPV derivatives Conjugation Path 2005-04-13 00:00:00 Journal contribution https://acs.figshare.com/articles/journal_contribution/Probing_the_Effects_of_Conjugation_Path_on_the_Electronic_Transmission_through_Single_Molecules_Using_Scanning_Tunneling_Microscopy/3291799 A systematic study of the relationship between the molecular structure of a series of thiol end-capped oligo-phenylenevinylenes (OPVs) and the coherent electronic transmission at the single molecule level was measured by scanning tunneling microscopy (STM). This reveals a significant change in the electronic transparency of various OPV derivatives due to the insertion of a methylene spacer group or due to nitro group substitution. Apparently, changes in the conjugation path through the central benzene ring from para to meta substitution does not have a profound effect on the electronic transparency of the molecules.