If i deposit a layer of thiophenol on a gold surface,how i can calculate average coverage area if i get a circle deposit layer and i measured its radius
I'm not sure I understand the question correctly. If the deposited layer is a perfect circle within a larger gold area, then the area is simply pi multiplied by the square of the radius, as usual for calculating the area of a circle.
What is your goal - to cover the entire gold surface as efficiently as possible? To make dots of thiophenol of a particular size?
If you know the concentration of the thiophenol solution in molecules/cm3 , then in order to calculate the deposition density in molecules/cm2 you need to know the volume of solution in the droplet as well as the area over which it deposits. The formula will be (concentration X volume)/(area). (Units: (mol.cm-3 X cm3)/(cm2) )
If the solution concentration is in moles or grams per unit volume, then you will need to convert it to the appropriate units using Avogadro's number and (in the latter case) the molecular mass.
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