Adsorption characteristics of 1,3-propanedithiol on gold: surface-enhanced Raman scattering and ellipsometry study

The adsorption behavior of 1,3-propanedithiol (1,3-PDT) on a colloidal gold surface is investigated by means of surface-enhanced Raman scattering (SERS). The study discuses that a separate ellipsometry measurement revealed that a best one and one-half layered film could be assembled on gold in polar and protic solvents while up to three layers were assembled on gold in n-hexane solution of 1,3-PDT.