Briefly, samples were fabricated by electron beam evaporation of 25
nm Ti/100 nm Au onto cleaned Si wafers purchased from IDB Technologies.
Gold (QSX 301)- and silicon dioxide (QSX 303)-coated QCM-D sensors
were purchased from Biolin Scientific. Unless otherwise stated, solvents
and reagents purchased commercially were used without further purification.
1,3-Propanedithiol was purchased from Sigma-Aldrich and MPTES was
purchased from TCI Chemicals. DMSO was purchased from Fisher Scientific.