TY - GEN
T1 - Probing phase segregation in porphyrin-polymer blends with multidimensional IR spectroscopy.
AU - Eigner, Audrey A.
AU - Massari, Aaron
PY - 2009/12/1
Y1 - 2009/12/1
N2 - Multidimensional IR spectroscopy is used to study blends of the regioregular semiconducting polymer, poly(3-hexylthiophene) with ruthenium porphyrins in solid state thin films. A ruthenium-bound carbon monoxide ligand is a sensitive reporter of the local electrostatic environment and indicates that the porphyrins localize into phase-segregated domains upon annealing in solvent vapor. The FTIR spectrum of this ligand reports on the state of aggregation, which we then correlate with transmission electron microscopy images of these films before and after annealing. We then use 2D-IR spectroscopy, an ultrafast IR technique, to measure the fast structural dynamics that are present in the vicinity of the CO ligand when it is homogeneously blended in the polymer film and phase segregated into purely porphyrinic domains.
AB - Multidimensional IR spectroscopy is used to study blends of the regioregular semiconducting polymer, poly(3-hexylthiophene) with ruthenium porphyrins in solid state thin films. A ruthenium-bound carbon monoxide ligand is a sensitive reporter of the local electrostatic environment and indicates that the porphyrins localize into phase-segregated domains upon annealing in solvent vapor. The FTIR spectrum of this ligand reports on the state of aggregation, which we then correlate with transmission electron microscopy images of these films before and after annealing. We then use 2D-IR spectroscopy, an ultrafast IR technique, to measure the fast structural dynamics that are present in the vicinity of the CO ligand when it is homogeneously blended in the polymer film and phase segregated into purely porphyrinic domains.
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U2 - 10.1109/IEMBS.2009.5332786
DO - 10.1109/IEMBS.2009.5332786
M3 - Conference contribution
C2 - 19963922
AN - SCOPUS:77951007281
SN - 9781424432967
T3 - Conference proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Conference
SP - 6307
EP - 6310
BT - Proceedings of the 31st Annual International Conference of the IEEE Engineering in Medicine and Biology Society
PB - IEEE Computer Society
T2 - 31st Annual International Conference of the IEEE Engineering in Medicine and Biology Society: Engineering the Future of Biomedicine, EMBC 2009
Y2 - 2 September 2009 through 6 September 2009
ER -