1. Bulk expansion and contraction of azobenzene materials have also been observed. 2. Thus, azobenzene is an example of an organic diazene. 3. For instance, with maleic acid and with azobenzene , often by photoisomerization. 4. Examples of the former include stilbene and azobenzene . 5. It is structurally related to azobenzene . 6. Thus, cis-azobenzene may thermally relax back, in dark, to the trans isomer. 7. The mechanism of this surface holography seems related to a new photomechanical effect, involving azobenzene isomerization. 8. Azobenzene has been attached to ligands ( drug ) to photo-modulate their affinity for proteins.9. SpectraDisc adds a coating of a transparent polymer with a light-sensitive chemical in it called azobenzene . 10. The large geometry change associated with azobenzene photoisomerization has also been used to control protein activity with light.
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