TY  - JOUR
A1  - Filimon, Marlena
A1  - Kopf, Ilona
A1  - Ballout, Fuad
A1  - Schmidt, Dietrich A.
A1  - Bruendermann, Erik
A1  - Rühe, Jürgen
A1  - Santer, Svetlana
A1  - Havenith, Martina
T1  - Smart polymer surfaces : mapping chemical landscapes on the nanometre scale
N2  - 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 x 100 nm x 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.
Y1  - 2010
UR  - http://www.rsc.org/Publishing/Journals/sm/index.asp
U6  - https://doi.org/10.1039/C0sm00098a
SN  - 1744-683X
ER  - 
TY  - JOUR
A1  - Filimon, Marlena
A1  - Kopf, Ilona
A1  - Schmidt, Dietrich A.
A1  - Bruendermann, Erik
A1  - Rühe, Jürgen
A1  - Santer, Svetlana
A1  - Havenith, Martina
T1  - Local chemical composition of nanophase-separated polymer brushes
JF  - Physical chemistry, chemical physics : a journal of European Chemical Societies
N2  - Using scattering scanning nearfield infrared microscopy (s-SNIM), we have imaged the nanoscale phase separation of mixed polystyrene-poly(methyl methacrylate) (PS-PMMA) brushes and investigated changes in the top layer as a function of solvent exposure. We deduce that the top-layer of the mixed brushes is composed primarily of PMMA after exposure to acetone, while after exposure to toluene this changes to PS. Access to simultaneously measured topographic and chemical information allows direct correlation of the chemical morphology of the sample with topographic information. Our results demonstrate the potential of s-SNIM for chemical mapping based on distinct infrared absorption properties of polymers with a high spatial resolution of 80 nm x 80 nm.
Y1  - 2011
U6  - https://doi.org/10.1039/c0cp02756a
SN  - 1463-9076
VL  - 13
IS  - 24
SP  - 11620
EP  - 11626
PB  - Royal Society of Chemistry
CY  - Cambridge
ER  -