Optically flat polymer films of
poly(N-hexadecylpyrrole) (PHDPy) have been successfully
prepared on
gold electrodes modified with self-assembled monolayers of
bis(ω-(N-pyrrolyl)-n-undecyl) disulfide
(BPUS).
During the growth of PHDPy, the surface-confined pyrroles in BPUS
serve as nucleation sites for the
epitaxial growth of PHDPy instead of being laterally polymerized to
form polymeric monolayers. We
provide visual evidence to confirm the chemical reaction between the
surface-confined pyrroles and HDPy
in the solution. Polymer growth on the modified and unmodified
electrodes is investigated using cyclic
voltammetry, optical microscopy, and scanning probe
microscopy.
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