Electric-field induced bistability in single-molecule conductance measurements for boron coordinated curcuminoid compounds.

ABSTRACT: We have studied the single-molecule conductance of a family of curcuminoid molecules (CCMs) using the mechanically controlled break junction (MCBJ) technique. The CCMs under study contain methylthio (MeS-) as anchoring groups: MeS-CCM (1), the free-ligand organic molecule, and two coordination compounds, MeS-CCM-BF₂ (2) and MeS-CCM-Cu (3), where ligand 1 coordinates to a boron center (BF₂ group) and to a Cu^II moiety, respectively. We found that the three molecules present stable molecular junctions allowing detailed statistical analysis of their electronic properties. Compound 3 shows a slight increase in the conductance with respect to free ligand 1, whereas incorporation of BF₂ (compound 2) promo

SUBMITTER: Olavarria-Contreras IJ 

PROVIDER: S-EPMC6124902 | biostudies-literature | 2018 Sep

REPOSITORIES: biostudies-literature