Determination
of the Molecular Arrangement Inside Cyanine Dye Aggregates by Magnetic
Orientation
I. O. Shklyarevskiy, P. C. M. Christianen, E. Aret, H. Meekes, E.
Vlieg, G. Deroover, P. Callant, L. van Meervelt, and J. C. Maan
J. Phys. Chem. B 108 (2004) 16386-16391
Abstract:
We present a novel method for the determination of the internal
structure of macromolecular aggregates in solution based on polarized
absorption measurements on magnetically aligned aggregates. Different
types of aggregates of three cyanine dyes were investigated in order to
test the method. The obtained stacking geometries agree with those
found by X-ray diffraction experiments on single crystals grown from
the studied dyes, providing evidence that our method is a valuable tool
for structural analysis of molecular assemblies.