Azobenzene guest
molecules in the metal–organic framework
structure HKUST-1 show reversible photochemical switching and, in
addition, alignment phenomena. Since the host system is isotropic,
the orientation of the guest molecules is induced via photo processes
by polarized light. The optical properties of the thin films, analyzed
by interferometry and UV/vis spectroscopy, reveal the potential of
this alignment phenomenon for stable information storage.
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