Beilstein J. Nanotechnol.2012,3, 428–437, doi:10.3762/bjnano.3.49
in the benzene-PMO, due to the fact that the benzene-PMO walls possess a neutron scattering length density (SLD) similar to that of nitrogen in the condensed state. However, signals at higher q-values (>1 1/Å) are not affected with respect to their SANS intensity, even after complete pore filling
, confirming the assumption of a crystal-like periodicity within the PMO material walls due to π–π interactions between the organic bridges. The SLD of pristine benzene-PMO was altered by functionalizing the surface with different amounts of SO3H-groups, using the grafting method. For a low degree of
diffraction signals is no longer observed proving that homogeneously distributed SO3H-groups on the inner pore walls of the benzene-PMO alter the SLD in a way that it no longer fits to the SLD of the condensed N2.
Keywords: contrast matching; crystal-like periodicity; distribution of functional groups; PMO
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Scheme 1:
Illustration of the hexagonal pore arrangement of a functionalized benzene-PMO with the benzene rin...