Beilstein J. Org. Chem.2019,15, 2408–2418, doi:10.3762/bjoc.15.233
Sandra Olsson Oscar Benito Perez Magnus Blom Adolf Gogoll Department of Chemistry-BMC, Uppsala University, S-751 23 Uppsala, Sweden Faculty of Chemistry, Universitat de Barcelona, C/ Martí i Franquès 1, 08028 Barcelona, Spain 10.3762/bjoc.15.233 Abstract A series of stiffstilbene macrocycles
have been studied to investigate the possible impact of the macrocycle ring size on their photodynamic properties. The results show that reducing the ring size counteracts the photoisomerization ability of the macrocycles. However, even the smallest macrocycle studied (stiffstilbene subunits linked by
largest macrocycle (linked by a twelve carbon chain) is significantly higher than that of the stiffstilbene unit itself. In general, it is indicated that addition of even a flexible chain to the stiffstilbene unit may significantly affect its photochemical properties and increase the photostability of
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Graphical Abstract
Scheme 1:
The stiff stilbene photoisomerization from Z to E and vice versa by irradiation at 300 nm and 360 n...