Intramolecular imaging of physisorbed molecules with the scanning tunneling microscope at liquid/graphite interface

We report on scanning tunneling microscope (STM) images of physisorbed n‐decanol at the liquid/graphite interface. The STM image contrast within the molecules is observed to change as a function of bias voltage. The origin of this image contrast is found to be related to the electronic structures associated with the functional groups within the molecules. This enables us to selectively image the molecule’s hydroxyl head group and the alkane tail at different bias voltages.