Fig. 3. (a) Thin-film UV-visible spectra of P3OT–PFB modified with 3-mercaptopropyl(trimethoxysilane) showing the effect of glass pre-treatment, and a subsequent solvent wash (chloroform), on film retention. Films spun from THF solutions (5 mg mL^–1) (b) schematic representation of partial polymer retention due to tethering to the glass substrate via the siloxane linker (blue dot).