Filimon, M, Kopf, I, Ballout, F, Schmidt, DA, Brundermann, E, Ruhe, J, Santer, S, Havenith, M, Smart polymer surfaces: mapping chemical landscapes on the nanometre scale, Soft Matter, 6, 2010, 3764-3768
Soft Matter; 6;
We show that Scattering Infrared Near-field Microscopy (SNIM) allows chemical mapping of polymer
monolayers that can serve as designed nanostructured surfaces with specific surface chemistry
properties on a nm scale. Using s-SNIM a minimum volume of 100 nm 100 nm 15 nm is sufficient
for a recording of a ‘‘chemical’’ IR signature which corresponds to an enhancement of at least four
orders of magnitudes compared to conventional FT-IR microscopy. We could prove that even in cases
where it is essentially difficult to distinguish between distinct polymer compositions based solely on
topography, nanophase separated polymers can be clearly distinguished according to their
characteristic near-field IR response.
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