Abstract
In situ scanning tunneling microscopy (STM) was employed to study the structure of adlayers of crystal violet (CV) and water-soluble porphyrin formed on a sulfur-modified Au(111) electrode in perchloric acid solution. It was confirmed that a well-defined sulfur adlayer with (√3 × √3)R30° structure can be prepared on Au(111) under potential control. Highly ordered adlayers of the molecules were found to form on the sulfur-modified Au(111) surface. In situ STM revealed the characteristic shape, packing arrangement, and even internal structure of each molecule. It is demonstrated that the sulfur-modified Au(111) electrode can be used as a substrate suitable for the investigation of the adsorption of organic molecules in solution.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
